*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg: #060a10;
  --bg-2: #0b1120;
  --bg-3: #101826;
  --fg: #e8edf5;
  --fg-2: #7a8ba8;
  --fg-3: #4a5a72;
  --accent: #00e5c8;
  --accent-dim: rgba(0, 229, 200, 0.10);
  --red: #e8403a;
  --mono-font: 'IBM Plex Mono', 'Courier New', monospace;
  --sans-font: 'IBM Plex Sans', system-ui, sans-serif;
  --max-w: 1100px;
}
html { font-size: 16px; scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans-font);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
/* NAV */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 0 2rem;
  border-bottom: 1px solid rgba(0,229,200,0.08);
  background: rgba(6,10,16,0.85);
  backdrop-filter: blur(12px);
}
.nav-inner { max-width: var(--max-w); margin: 0 auto; height: 56px; display: flex; align-items: center; justify-content: space-between; }
.nav-brand { display: flex; align-items: center; gap: 0.625rem; }
.nav-name { font-family: var(--mono-font); font-size: 0.875rem; font-weight: 700; color: var(--fg); letter-spacing: 0.05em; }
.nav-status { display: flex; align-items: center; gap: 0.5rem; font-family: var(--mono-font); font-size: 0.7rem; color: var(--fg-2); }
.nav-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 8px var(--accent); animation: pulse-dot 2s ease-in-out infinite; }
@keyframes pulse-dot { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }

/* HERO */
.hero {
  position: relative; min-height: 100vh;
  display: flex; flex-direction: column; justify-content: center;
  padding: 7rem 2rem 4rem; overflow: hidden;
  border-bottom: 1px solid rgba(0,229,200,0.06);
}
.hero-grid-overlay {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(0,229,200,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,229,200,0.035) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 85% 85% at 50% 50%, black 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 85% 85% at 50% 50%, black 30%, transparent 100%);
}
.hero-signal-ring {
  position: absolute; border-radius: 50%;
  border: 1px solid rgba(0, 229, 200, 0.07);
  pointer-events: none;
}
.ring-1 { width: 600px; height: 600px; top: 50%; left: 50%; transform: translate(-50%, -50%); animation: ring-expand 9s ease-out infinite; }
.ring-2 { width: 900px; height: 900px; top: 50%; left: 50%; transform: translate(-50%, -50%); animation: ring-expand 9s ease-out infinite 3s; }
.ring-3 { width: 1300px; height: 1300px; top: 50%; left: 50%; transform: translate(-50%, -50%); animation: ring-expand 9s ease-out infinite 6s; }
@keyframes ring-expand {
  0% { opacity: 0.35; transform: translate(-50%, -50%) scale(0.75); }
  100% { opacity: 0; transform: translate(-50%, -50%) scale(1.5); }
}
.hero-content {
  position: relative; z-index: 1;
  max-width: var(--max-w); margin: 0 auto; width: 100%;
  display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center;
}
.hero-label {
  display: flex; align-items: center; gap: 0.5rem;
  font-family: var(--mono-font); font-size: 0.65rem; letter-spacing: 0.2em; color: var(--accent);
  margin-bottom: 1.5rem;
}
.hero-label-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
.hero-headline {
  font-family: var(--mono-font);
  font-size: clamp(2rem, 4.5vw, 3.75rem);
  font-weight: 700; line-height: 1.08; letter-spacing: -0.03em;
  margin-bottom: 1.5rem; color: var(--fg);
}
.hero-sub { font-size: 1rem; color: var(--fg-2); line-height: 1.75; margin-bottom: 0; max-width: 460px; }

/* Terminal */
.hero-terminal {
  background: var(--bg-3);
  border: 1px solid rgba(0, 229, 200, 0.18);
  border-radius: 10px; overflow: hidden;
  box-shadow: 0 24px 70px rgba(0,0,0,0.55), 0 0 50px rgba(0,229,200,0.04);
}
.terminal-header {
  display: flex; align-items: center; gap: 0.4rem;
  padding: 0.75rem 1.25rem;
  background: rgba(0,229,200,0.03);
  border-bottom: 1px solid rgba(0,229,200,0.08);
}
.terminal-dot { width: 11px; height: 11px; border-radius: 50%; }
.dot-red { background: #e8403a; }
.dot-yellow { background: #f5c842; }
.dot-green { background: #32d48a; }
.terminal-title { font-family: var(--mono-font); font-size: 0.65rem; color: var(--fg-3); margin-left: 0.75rem; letter-spacing: 0.05em; }
.terminal-body { padding: 1.5rem 1.5rem 1.75rem; }
.terminal-line { font-family: var(--mono-font); font-size: 0.78rem; line-height: 1.9; color: var(--fg); }
.t-prompt { color: var(--accent); margin-right: 0.75rem; font-weight: 700; }
.t-cmd { color: var(--fg); font-weight: 600; }
.t-str { color: #7dd3c0; }
.t-key { color: #5a9ab8; }
.t-indent { padding-left: 1.75rem; display: block; }
.t-deep { padding-left: 3.5rem; display: block; }
.t-comment { color: var(--fg-3); }
.t-result { margin-top: 0.75rem; display: block; }

/* Hero Stats */
.hero-stats {
  position: relative; z-index: 1;
  max-width: var(--max-w); margin: 3.5rem auto 0; width: 100%;
  display: grid; grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid rgba(0,229,200,0.08); padding-top: 2.5rem; gap: 2rem;
}
.stat-num { font-family: var(--mono-font); font-size: 1.75rem; font-weight: 700; color: var(--fg); display: block; }
.stat-label { font-size: 0.72rem; color: var(--fg-3); letter-spacing: 0.06em; text-transform: uppercase; margin-top: 0.25rem; display: block; }

/* PROBLEM */
.problem { padding: 7rem 2rem; background: var(--bg-2); border-bottom: 1px solid rgba(0,229,200,0.06); }
.problem-inner { max-width: var(--max-w); margin: 0 auto; }
.problem-tag { font-family: var(--mono-font); font-size: 0.65rem; letter-spacing: 0.2em; color: var(--accent); margin-bottom: 1.5rem; display: block; }
.problem-headline {
  font-family: var(--mono-font);
  font-size: clamp(1.6rem, 3.5vw, 2.75rem);
  font-weight: 700; line-height: 1.15; letter-spacing: -0.025em; margin-bottom: 2rem;
}
.problem-red { color: var(--red); }
.problem-body p { font-size: 1rem; color: var(--fg-2); line-height: 1.75; max-width: 680px; margin-bottom: 1.25rem; }
.problem-numbers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; margin-top: 3.5rem; padding-top: 3rem; border-top: 1px solid rgba(0,229,200,0.08); }
.pn-value { font-family: var(--mono-font); font-size: 1.5rem; font-weight: 700; color: var(--fg); display: block; margin-bottom: 0.35rem; }
.pn-label { font-size: 0.72rem; color: var(--fg-3); letter-spacing: 0.06em; }

/* FEATURES */
.features { padding: 7rem 2rem; border-bottom: 1px solid rgba(0,229,200,0.06); }
.features-inner { max-width: var(--max-w); margin: 0 auto; }
.features-tag { font-family: var(--mono-font); font-size: 0.65rem; letter-spacing: 0.2em; color: var(--accent); margin-bottom: 1.5rem; display: block; }
.features-headline {
  font-family: var(--mono-font);
  font-size: clamp(1.6rem, 3.5vw, 2.75rem);
  font-weight: 700; line-height: 1.15; letter-spacing: -0.025em; margin-bottom: 3.5rem;
}
.features-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.feature-card {
  background: var(--bg-2); border: 1px solid rgba(0,229,200,0.10);
  border-radius: 10px; padding: 2rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.feature-card:hover { border-color: rgba(0,229,200,0.28); box-shadow: 0 0 30px rgba(0,229,200,0.04); }
.feature-icon {
  width: 46px; height: 46px;
  background: var(--accent-dim); border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: var(--accent); margin-bottom: 1.5rem;
}
.feature-title { font-family: var(--mono-font); font-size: 0.875rem; font-weight: 700; color: var(--fg); margin-bottom: 0.75rem; letter-spacing: 0.02em; }
.feature-desc { font-size: 0.875rem; color: var(--fg-2); line-height: 1.65; }

/* ARCHITECTURE */
.architecture { padding: 7rem 2rem; background: var(--bg-2); border-bottom: 1px solid rgba(0,229,200,0.06); }
.arch-inner { max-width: var(--max-w); margin: 0 auto; }
.arch-tag { font-family: var(--mono-font); font-size: 0.65rem; letter-spacing: 0.2em; color: var(--accent); margin-bottom: 1.5rem; display: block; }
.arch-headline {
  font-family: var(--mono-font);
  font-size: clamp(1.6rem, 3.5vw, 2.75rem);
  font-weight: 700; line-height: 1.15; letter-spacing: -0.025em; margin-bottom: 3.5rem;
}
.arch-diagram { display: flex; flex-direction: column; gap: 3.5rem; }
.arch-flow { display: flex; align-items: center; justify-content: center; gap: 0; flex-wrap: wrap; }
.arch-arrow { display: flex; align-items: center; }
.arch-node { display: flex; justify-content: center; }
.node-inner {
  background: var(--bg-3); border: 1px solid rgba(0,229,200,0.15);
  border-radius: 10px; padding: 1.5rem 2rem; text-align: center; min-width: 190px;
  transition: all 0.25s;
}
.node-inner-active {
  background: var(--accent-dim); border-color: rgba(0,229,200,0.38);
  box-shadow: 0 0 40px rgba(0,229,200,0.08);
}
.node-icon { color: var(--accent); margin-bottom: 0.625rem; display: flex; justify-content: center; }
.node-label { font-family: var(--mono-font); font-size: 0.65rem; letter-spacing: 0.15em; color: var(--fg); display: block; margin-bottom: 0.25rem; }
.node-sublabel { font-size: 0.7rem; color: var(--fg-3); }
.arch-actions-list {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 0.875rem; border-top: 1px solid rgba(0,229,200,0.08); padding-top: 3rem;
}
.aal-item { font-family: var(--mono-font); font-size: 0.75rem; color: var(--fg-2); display: flex; align-items: center; gap: 0.5rem; }
.aal-check { color: var(--accent); font-size: 0.875rem; }

/* ECOSYSTEM */
.ecosystem { padding: 7rem 2rem; border-bottom: 1px solid rgba(0,229,200,0.06); }
.eco-inner { max-width: var(--max-w); margin: 0 auto; }
.eco-tag { font-family: var(--mono-font); font-size: 0.65rem; letter-spacing: 0.2em; color: var(--accent); margin-bottom: 1.5rem; display: block; }
.eco-headline {
  font-family: var(--mono-font);
  font-size: clamp(1.6rem, 3.5vw, 2.75rem);
  font-weight: 700; line-height: 1.15; letter-spacing: -0.025em; margin-bottom: 1rem;
}
.eco-desc { font-size: 1rem; color: var(--fg-2); margin-bottom: 3rem; max-width: 580px; }
.eco-categories { display: flex; flex-direction: column; gap: 2.5rem; }
.eco-cat-title { font-family: var(--mono-font); font-size: 0.7rem; letter-spacing: 0.15em; color: var(--fg-3); margin-bottom: 1rem; }
.eco-items { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.eco-chip {
  font-family: var(--mono-font); font-size: 0.72rem; color: var(--fg-2);
  background: var(--bg-3); border: 1px solid rgba(0,229,200,0.10);
  padding: 0.4rem 0.9rem; border-radius: 5px; letter-spacing: 0.02em;
}

/* CLOSING */
.closing { padding: 7rem 2rem; background: var(--bg-2); }
.closing-inner { max-width: 760px; margin: 0 auto; }
.closing-sub { font-size: 1rem; color: var(--fg-2); line-height: 1.75; margin-bottom: 1.5rem; }
.closing-vision { display: flex; align-items: center; gap: 2rem; margin-top: 3rem; padding-top: 3rem; }
.cv-line { flex: 1; height: 1px; background: linear-gradient(to right, transparent, rgba(0,229,200,0.3), transparent); }
.cv-text { font-family: var(--mono-font); font-size: 0.78rem; color: var(--fg-2); line-height: 1.65; text-align: center; flex: 1.5; }

/* FOOTER */
.footer { padding: 3rem 2rem; border-top: 1px solid rgba(0,229,200,0.06); }
.footer-inner { max-width: var(--max-w); margin: 0 auto; display: flex; align-items: center; gap: 1.5rem; flex-wrap: wrap; }
.footer-brand { display: flex; align-items: center; gap: 0.5rem; }
.footer-name { font-family: var(--mono-font); font-size: 0.85rem; font-weight: 700; letter-spacing: 0.05em; }
.footer-tagline { font-size: 0.8rem; color: var(--fg-3); font-style: italic; flex: 1; }
.footer-meta { font-family: var(--mono-font); font-size: 0.65rem; color: var(--fg-3); display: flex; gap: 0.5rem; align-items: center; }
.footer-sep { color: var(--fg-3); }

/* RESPONSIVE */
@media (max-width: 768px) {
  .hero { padding-top: 5rem; }
  .hero-content { grid-template-columns: 1fr !important; gap: 2.5rem; }
  .hero-stats { grid-template-columns: 1fr; gap: 1.5rem; }
  .features-grid { grid-template-columns: 1fr; }
  .problem-numbers { grid-template-columns: 1fr; gap: 1.5rem; }
  .arch-flow { flex-direction: column; gap: 0.5rem; }
  .arch-arrow { display: none; }
  .arch-actions-list { grid-template-columns: repeat(2, 1fr); }
  .closing-vision { flex-direction: column; gap: 1.5rem; }
  .cv-line { display: none; }
  .footer-inner { flex-direction: column; align-items: flex-start; gap: 1rem; }
  .footer-tagline { flex: unset; }
  .footer-meta { flex-direction: column; gap: 0.25rem; }
}