:root {
  --bg: #0a0a10;
  --bg-2: #111118;
  --bg-3: #1a1a24;
  --fg: #f0ede8;
  --fg-muted: #8a8a9a;
  --accent: #00d4a0;
  --accent-2: #ff6b35;
  --accent-3: #f7c948;
  --border: #1e1e2a;
  --radius: 10px;
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

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: 0 40px;
  height: 60px;
  display: flex;
  align-items: center;
  background: rgba(10, 10, 16, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--fg);
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}
.nav-badge {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--accent);
  background: rgba(0, 212, 160, 0.08);
  border: 1px solid rgba(0, 212, 160, 0.2);
  padding: 4px 12px;
  border-radius: 100px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* HERO */
.hero {
  padding: 120px 40px 80px;
  min-height: 100vh;
  display: flex;
  align-items: center;
}
.hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.hero-kicker {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 20px;
}
.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 4vw, 3.6rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.03em;
  color: var(--fg);
  margin-bottom: 24px;
}
.hero-lede {
  font-size: 1.05rem;
  color: var(--fg-muted);
  line-height: 1.7;
  max-width: 440px;
  margin-bottom: 0;
}

/* ACTION WIDGET */
.action-list-widget {
  margin-top: 40px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.aw-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
}
.aw-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--fg);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.aw-count {
  font-size: 0.7rem;
  color: var(--fg-muted);
}
.aw-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
}
.aw-item:last-child { border-bottom: none; }
.aw-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.aw-icon--transfer { background: rgba(0, 212, 160, 0.12); color: var(--accent); }
.aw-icon--attach { background: rgba(247, 201, 72, 0.12); color: var(--accent-3); }
.aw-icon--cc { background: rgba(255, 107, 53, 0.12); color: var(--accent-2); }
.aw-body { flex: 1; min-width: 0; }
.aw-title { font-size: 0.82rem; font-weight: 600; color: var(--fg); margin-bottom: 2px; }
.aw-meta { font-size: 0.72rem; color: var(--fg-muted); }
.aw-priority {
  font-size: 0.65rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 100px;
  flex-shrink: 0;
}
.aw-item--high .aw-priority { background: rgba(0, 212, 160, 0.15); color: var(--accent); }
.aw-item--med .aw-priority { background: rgba(255, 107, 53, 0.15); color: var(--accent-2); }

/* DATA SIGNAL GRID */
.data-signal-grid {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.dsg-source, .dsg-output {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.dsg-source-label, .dsg-output-label {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}
.dsg-source-items {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.dsg-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.72rem;
  color: var(--fg);
  font-weight: 500;
}
.dsg-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}
.dsg-dot--pos { background: #a78bfa; }
.dsg-dot--inv { background: #60a5fa; }
.dsg-dot--web { background: #34d399; }
.dsg-dot--rev { background: #fbbf24; }
.dsg-dot--foot { background: #f87171; }
.dsg-dot--gmb { background: #a3e635; }
.dsg-connector {
  display: flex;
  align-items: center;
  padding: 4px 0;
  gap: 0;
}
.dsg-line {
  flex: 1;
  height: 1px;
  background: var(--border);
}
.dsg-arrow { padding: 0 12px; }
.dsg-ai {
  padding: 20px;
}
.dsg-ai-box {
  background: var(--bg-2);
  border: 1px solid rgba(0, 212, 160, 0.25);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
}
.dsg-ai-icon { display: flex; justify-content: center; margin-bottom: 10px; }
.dsg-ai-label {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 6px;
}
.dsg-ai-sub {
  font-size: 0.72rem;
  color: var(--fg-muted);
  line-height: 1.5;
}
.dsg-output-items { display: flex; flex-direction: column; gap: 8px; }
.dsg-out-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.78rem;
  color: var(--fg);
}
.dsg-rank {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--bg);
  font-size: 0.65rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* PROBLEM */
.problem {
  padding: 100px 40px;
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.problem-inner {
  max-width: 1200px;
  margin: 0 auto;
}
.section-label {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 20px;
}
.section-headline {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--fg);
  max-width: 700px;
  margin-bottom: 60px;
}
.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 60px;
}
.problem-stat {
  background: var(--bg-3);
  padding: 36px 32px;
}
.ps-number {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 12px;
}
.ps-desc {
  font-size: 0.85rem;
  color: var(--fg-muted);
  line-height: 1.6;
}
.problem-quote {
  border-left: 2px solid var(--accent);
  padding-left: 28px;
}
.problem-quote blockquote {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-style: italic;
  color: var(--fg);
  line-height: 1.5;
  margin-bottom: 12px;
}
.problem-quote cite {
  font-size: 0.78rem;
  color: var(--fg-muted);
  font-style: normal;
}

/* HOW IT WORKS */
.hiw-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 100px 40px;
}
.hiw-steps {
  display: flex;
  align-items: stretch;
  gap: 0;
  margin-top: 60px;
}
.hiw-step {
  flex: 1;
  padding: 40px 36px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.hiw-step h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 12px;
}
.hiw-step p {
  font-size: 0.85rem;
  color: var(--fg-muted);
  line-height: 1.7;
  margin-bottom: 20px;
}
.hiw-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.hiw-tag {
  font-size: 0.68rem;
  padding: 3px 10px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: 100px;
  color: var(--fg-muted);
  font-weight: 500;
}
.hiw-num {
  font-family: var(--font-display);
  font-size: 2.8rem;
  font-weight: 700;
  color: rgba(0, 212, 160, 0.15);
  line-height: 1;
  margin-bottom: 20px;
}
.hiw-divider {
  width: 40px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* USE CASES */
.usecases {
  padding: 100px 40px;
  background: var(--bg-2);
  border-top: 1px solid var(--border);
}
.uc-inner {
  max-width: 1200px;
  margin: 0 auto;
}
.uc-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 60px;
}
.uc-card {
  background: var(--bg-3);
  padding: 32px 28px;
}
.uc-icon {
  width: 44px;
  height: 44px;
  background: rgba(0, 212, 160, 0.1);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: 18px;
}
.uc-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 10px;
}
.uc-card p {
  font-size: 0.82rem;
  color: var(--fg-muted);
  line-height: 1.6;
  margin-bottom: 16px;
}
.uc-signal {
  font-size: 0.72rem;
  color: var(--fg-muted);
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
}
.uc-signal-label {
  color: var(--accent-2);
  font-weight: 600;
}

/* ARCHITECTURE */
.architecture {
  padding: 100px 40px;
}
.arch-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.arch-body {
  font-size: 0.9rem;
  color: var(--fg-muted);
  line-height: 1.8;
  margin: 28px 0;
}
.arch-features {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.arch-feature {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}
.arch-check {
  width: 22px;
  height: 22px;
  background: rgba(0, 212, 160, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 1px;
}
.arch-feat-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 2px;
}
.arch-feat-desc {
  font-size: 0.78rem;
  color: var(--fg-muted);
}
.arch-visual {
  display: flex;
  flex-direction: column;
  gap: 2px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.arch-box {
  background: var(--bg-2);
  padding: 20px;
}
.arch-box-label {
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}
.arch-sources {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.arch-src {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.8rem;
  color: var(--fg);
}
.arch-src-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}
.arch-box-arrow {
  display: flex;
  justify-content: center;
  padding: 8px;
}
.arch-box--ai {
  background: var(--bg-3);
  border: 1px solid rgba(0, 212, 160, 0.2);
}
.arch-ai-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 8px;
}
.arch-ai-running {
  font-size: 0.78rem;
  color: var(--fg);
  margin-bottom: 4px;
}
.arch-ai-no {
  font-size: 0.72rem;
  color: var(--fg-muted);
}
.arch-box--out { }
.arch-outputs {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.arch-out {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.78rem;
  color: var(--fg);
}

/* CLOSING */
.closing {
  padding: 100px 40px 120px;
  background: var(--bg-2);
  border-top: 1px solid var(--border);
}
.closing-inner {
  max-width: 1200px;
  margin: 0 auto;
}
.closing-headline {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--fg);
  margin-bottom: 24px;
}
.closing-body {
  font-size: 0.95rem;
  color: var(--fg-muted);
  line-height: 1.8;
  max-width: 520px;
  margin-bottom: 48px;
}
.closing-meta {
  display: flex;
  flex-direction: column;
  gap: 16px;
  border-top: 1px solid var(--border);
  padding-top: 32px;
}
.cm-item { }
.cm-label {
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 4px;
}
.cm-value {
  font-size: 0.85rem;
  color: var(--fg);
}

/* FOOTER */
.footer {
  padding: 40px;
  border-top: 1px solid var(--border);
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--fg);
}
.footer-tagline {
  font-size: 0.78rem;
  color: var(--fg-muted);
  flex: 1;
}
.footer-copy {
  font-size: 0.72rem;
  color: var(--fg-muted);
}

/* RESPONSIVE */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 60px; }
  .arch-inner { grid-template-columns: 1fr; }
  .problem-grid { grid-template-columns: 1fr; }
  .uc-grid { grid-template-columns: 1fr; }
  .hiw-steps { flex-direction: column; gap: 16px; }
  .hiw-divider { display: none; }
}
@media (max-width: 600px) {
  .hero { padding: 100px 20px 60px; }
  .problem, .hiw-inner, .usecases, .architecture, .closing { padding: 60px 20px; }
  .footer { padding: 24px 20px; }
  .nav { padding: 0 20px; }
}