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

:root {
  --bg: #080809;
  --bg-2: #0D0D12;
  --surface: #111116;
  --surface-2: #16161C;
  --border: #1E1E26;
  --fg: #F0F0F5;
  --fg-2: #9090A0;
  --fg-3: #5A5A6A;
  --cyan: #00E5FF;
  --cyan-dim: rgba(0, 229, 255, 0.12);
  --amber: #FFB800;
  --purple: #A855F7;
  --green: #10B981;
  --font-head: 'Syne', system-ui, sans-serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
}

html { font-size: 16px; scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* === TYPOGRAPHY === */
.section-label {
  font-family: var(--font-head);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
  display: block;
  margin-bottom: 1rem;
}

.section-title {
  font-family: var(--font-head);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 800;
  line-height: 1.1;
  color: var(--fg);
  margin-bottom: 2rem;
}

/* === NAV === */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1.5rem 3rem;
  border-bottom: 1px solid var(--border);
  background: rgba(8, 8, 9, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: var(--font-head);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--fg);
  letter-spacing: -0.02em;
}
.nav-logo em {
  font-style: normal;
  color: var(--cyan);
}
.nav-tagline {
  font-size: 0.75rem;
  color: var(--fg-3);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-family: var(--font-head);
}

/* === HERO === */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 4rem;
  padding: 8rem 3rem 4rem;
  position: relative;
  overflow: hidden;
  max-width: 1200px;
  margin: 0 auto;
}
.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 229, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 100%);
}
.hero-glow {
  position: absolute;
  top: -20%;
  right: 0;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle at center, rgba(0, 229, 255, 0.08) 0%, transparent 70%);
  pointer-events: none;
}
.hero-content { position: relative; z-index: 1; }
.hero-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-family: var(--font-head);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--fg-3);
  border: 1px solid var(--border);
  padding: 0.4rem 1rem;
  border-radius: 100px;
  margin-bottom: 2rem;
}
.hero-headline {
  font-family: var(--font-head);
  font-size: clamp(2.8rem, 5.5vw, 4.5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--fg);
  margin-bottom: 1.5rem;
}
.hero-headline .accent { color: var(--cyan); }
.hero-sub {
  font-size: 1.05rem;
  color: var(--fg-2);
  line-height: 1.7;
  max-width: 520px;
  margin-bottom: 3rem;
}
.hero-stats {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.stat { display: flex; flex-direction: column; gap: 0.25rem; }
.stat-num {
  font-family: var(--font-head);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--fg);
  letter-spacing: -0.03em;
}
.stat-label {
  font-size: 0.72rem;
  color: var(--fg-3);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}
/* === HERO VISUAL === */
.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 400px;
}
.signal-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(0, 229, 255, 0.15);
}
.ring-1 { width: 200px; height: 200px; animation: pulse-ring 3s ease-in-out infinite; }
.ring-2 { width: 300px; height: 300px; animation: pulse-ring 3s ease-in-out infinite 0.5s; }
.ring-3 { width: 400px; height: 400px; animation: pulse-ring 3s ease-in-out infinite 1s; }
@keyframes pulse-ring {
  0%, 100% { opacity: 0.4; transform: scale(1); }
  50% { opacity: 0.1; transform: scale(1.05); }
}
.signal-core {
  position: absolute;
  width: 56px;
  height: 56px;
  background: var(--surface-2);
  border: 1px solid rgba(0, 229, 255, 0.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 30px rgba(0, 229, 255, 0.15), inset 0 0 20px rgba(0, 229, 255, 0.05);
}

/* === SOLUTIONS === */
.solutions {
  padding: 6rem 3rem;
  max-width: 1200px;
  margin: 0 auto;
}
.solutions-header { margin-bottom: 4rem; }
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}
.solution-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
  transition: border-color 0.2s, transform 0.2s;
}
.solution-card:hover {
  border-color: rgba(0, 229, 255, 0.3);
  transform: translateY(-2px);
}
.solution-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 229, 255, 0.2), transparent);
  opacity: 0;
  transition: opacity 0.2s;
}
.solution-card:hover::before { opacity: 1; }
.card-icon {
  width: 52px;
  height: 52px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}
.card-title {
  font-family: var(--font-head);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}
.card-desc {
  font-size: 0.9rem;
  color: var(--fg-2);
  line-height: 1.65;
}

/* === HOW === */
.how {
  padding: 6rem 3rem;
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.how-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 5rem;
  align-items: start;
}
.how-title {
  font-family: var(--font-head);
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--fg);
  margin-bottom: 1rem;
}
.how-sub {
  font-size: 0.95rem;
  color: var(--fg-2);
  line-height: 1.7;
  margin-top: 1rem;
}
.how-steps { display: flex; flex-direction: column; gap: 0; }
.step {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 1.5rem;
  align-items: start;
}
.step-num {
  font-family: var(--font-head);
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--cyan);
  letter-spacing: 0.05em;
  padding-top: 0.25rem;
}
.step-title {
  font-family: var(--font-head);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 0.5rem;
}
.step-desc {
  font-size: 0.875rem;
  color: var(--fg-2);
  line-height: 1.65;
}
.step-connector {
  width: 1px;
  height: 32px;
  background: var(--border);
  margin: 0.5rem 0 0.5rem 29px;
}

/* === SECTORS === */
.sectors {
  padding: 6rem 3rem;
  max-width: 1200px;
  margin: 0 auto;
}
.sectors-inner {}
.sector-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 2.5rem;
  margin-bottom: 2.5rem;
}
.sector {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-head);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--fg-2);
}
.sector-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  flex-shrink: 0;
  box-shadow: 0 0 8px rgba(0, 229, 255, 0.5);
}
.sectors-note {
  font-size: 0.8rem;
  color: var(--fg-3);
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
  letter-spacing: 0.05em;
}

/* === CLOSING === */
.closing {
  padding: 8rem 3rem;
  text-align: center;
  background: var(--bg-2);
  border-top: 1px solid var(--border);
}
.closing-inner { max-width: 800px; margin: 0 auto; }
.closing-badge {
  display: inline-block;
  font-family: var(--font-head);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
  background: var(--cyan-dim);
  border: 1px solid rgba(0, 229, 255, 0.2);
  padding: 0.4rem 1.2rem;
  border-radius: 100px;
  margin-bottom: 2.5rem;
}
.closing-headline {
  font-family: var(--font-head);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--fg);
  margin-bottom: 1.5rem;
}
.closing-sub {
  font-size: 1.05rem;
  color: var(--fg-2);
  line-height: 1.7;
  max-width: 560px;
  margin: 0 auto 4rem;
}
.closing-footer { border-top: 1px solid var(--border); padding-top: 2rem; }
.closing-loc {
  font-size: 0.75rem;
  color: var(--fg-3);
  letter-spacing: 0.08em;
}

/* === FOOTER === */
.footer {
  padding: 3rem;
  border-top: 1px solid var(--border);
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
}
.footer-logo {
  font-family: var(--font-head);
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--fg);
  letter-spacing: -0.02em;
}
.footer-logo em { font-style: normal; color: var(--cyan); }
.footer-desc {
  font-size: 0.8rem;
  color: var(--fg-3);
  margin-top: 0.5rem;
  max-width: 280px;
  line-height: 1.6;
}
.footer-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.25rem;
}
.footer-meta span {
  font-size: 0.72rem;
  color: var(--fg-3);
  letter-spacing: 0.05em;
}

/* === RESPONSIVE === */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding-top: 6rem; gap: 2rem; }
  .hero-visual { display: none; }
  .hero-stats { gap: 1.5rem; }
  .solutions-grid { grid-template-columns: 1fr; }
  .how-inner { grid-template-columns: 1fr; gap: 3rem; }
  .sector-list { grid-template-columns: repeat(2, 1fr); }
  .nav { padding: 1rem 1.5rem; }
  .hero, .solutions, .sectors, .closing { padding-left: 1.5rem; padding-right: 1.5rem; }
  .how { padding-left: 1.5rem; padding-right: 1.5rem; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .footer-meta { align-items: flex-start; }
}
@media (max-width: 600px) {
  .sector-list { grid-template-columns: 1fr; }
  .hero-stats { flex-wrap: wrap; }
  .stat-divider { display: none; }
}