:root {
  --bg: #0a0d14;
  --bg-alt: #0e1220;
  --surface: #131829;
  --surface-border: #232a42;
  --text: #e8ebf5;
  --text-dim: #9aa3c0;
  --accent: #5eead4;
  --accent-2: #8b7bff;
  --accent-gradient: linear-gradient(135deg, var(--accent), var(--accent-2));
  --radius: 14px;
  --max-width: 1080px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

h1, h2, h3 { line-height: 1.15; margin: 0 0 0.5em; font-weight: 700; }
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.4rem); letter-spacing: -0.01em; }
h3 { font-size: 1.15rem; }
p { color: var(--text-dim); margin: 0 0 1em; }

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Nav ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  background: rgba(10, 13, 20, 0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, background 0.3s ease;
}
.nav.scrolled {
  border-bottom-color: var(--surface-border);
  background: rgba(10, 13, 20, 0.85);
}
.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.05rem;
}
.brand-mark {
  font-family: "SFMono-Regular", Consolas, Menlo, monospace;
  color: var(--accent);
}
.brand-dot { color: var(--text-dim); font-weight: 500; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 0.95rem;
}
.nav-links a:not(.nav-cta) {
  text-decoration: none;
  color: var(--text-dim);
  transition: color 0.2s ease;
}
.nav-links a:not(.nav-cta):hover { color: var(--text); }
.nav-cta {
  text-decoration: none;
  padding: 8px 16px;
  border-radius: 999px;
  background: var(--accent-gradient);
  color: #06111a;
  font-weight: 600;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 120px 24px 80px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.45;
  animation: blobFloat 16s ease-in-out infinite;
}
.blob-a {
  width: 420px; height: 420px;
  top: -120px; left: -80px;
  background: var(--accent);
  animation-delay: 0s;
}
.blob-b {
  width: 380px; height: 380px;
  bottom: -140px; right: -60px;
  background: var(--accent-2);
  animation-delay: -5s;
}
.blob-c {
  width: 300px; height: 300px;
  top: 30%; left: 60%;
  background: #ff7bb5;
  opacity: 0.25;
  animation-delay: -10s;
}
@keyframes blobFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -40px) scale(1.08); }
  66% { transform: translate(-25px, 25px) scale(0.95); }
}
.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(232,235,245,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(232,235,245,0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at 50% 0%, black, transparent 75%);
}
.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}
.eyebrow {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 18px;
}
.rotator {
  display: inline-block;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  transition: opacity 0.35s ease, transform 0.35s ease;
}
.rotator.swap { opacity: 0; transform: translateY(8px); }
.hero-sub {
  font-size: 1.1rem;
  max-width: 620px;
  margin: 20px auto 32px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.btn {
  display: inline-block;
  padding: 13px 26px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.98rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}
.btn-primary {
  background: var(--accent-gradient);
  color: #06111a;
  box-shadow: 0 8px 24px -8px rgba(94, 234, 212, 0.5);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 28px -8px rgba(94, 234, 212, 0.65); }
.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--surface-border);
}
.btn-ghost:hover { background: var(--surface); transform: translateY(-2px); }
.btn-large { padding: 16px 34px; font-size: 1.05rem; }

.scroll-cue {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  width: 22px; height: 36px;
  border: 2px solid var(--surface-border);
  border-radius: 12px;
  z-index: 1;
}
.scroll-cue span {
  display: block;
  width: 4px; height: 8px;
  margin: 6px auto 0;
  border-radius: 2px;
  background: var(--accent);
  animation: scrollCue 1.8s ease-in-out infinite;
}
@keyframes scrollCue {
  0% { transform: translateY(0); opacity: 1; }
  70% { transform: translateY(10px); opacity: 0; }
  100% { transform: translateY(0); opacity: 0; }
}

/* ---------- Sections ---------- */
.section { padding: 96px 0; position: relative; }
.section-alt { background: var(--bg-alt); }
.section-lead {
  font-size: 1.05rem;
  max-width: 560px;
  margin-bottom: 48px;
}

/* ---------- Cards ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}
.card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
  box-shadow: 0 16px 40px -20px rgba(94, 234, 212, 0.35);
}
.card-icon {
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 10px;
  background: rgba(94, 234, 212, 0.1);
  color: var(--accent);
  margin-bottom: 18px;
}
.card-icon svg { width: 22px; height: 22px; }
.card p { margin-bottom: 0; }
.card-link {
  display: inline-block;
  margin-top: 14px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
}
.card-link:hover { text-decoration: underline; }

/* ---------- KMP ---------- */
.kmp-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-top: 8px;
}
.kmp-diagram {
  margin: 0;
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius);
  padding: 24px;
}
.kmp-diagram svg { width: 100%; height: auto; display: block; color: var(--text); }
.kmp-diagram-caption {
  margin: 14px 0 0;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-dim);
}
.kmp-points { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 28px; }
.kmp-points li { display: flex; gap: 16px; }
.kmp-point-icon {
  flex: 0 0 auto;
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 8px;
  background: rgba(94, 234, 212, 0.1);
  color: var(--accent);
}
.kmp-point-icon svg { width: 16px; height: 16px; }
.kmp-points h3 { margin-bottom: 6px; font-size: 1.02rem; }
.kmp-points p { margin-bottom: 0; font-size: 0.95rem; }

/* ---------- Timeline ---------- */
.timeline {
  list-style: none;
  margin: 0; padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.timeline-step {
  position: relative;
  padding-top: 20px;
  border-top: 2px solid var(--surface-border);
}
.timeline-step::before {
  content: "";
  position: absolute;
  top: -2px; left: 0;
  width: 36px; height: 2px;
  background: var(--accent-gradient);
}
.timeline-index {
  display: block;
  font-family: "SFMono-Regular", Consolas, Menlo, monospace;
  color: var(--accent);
  font-size: 0.9rem;
  margin-bottom: 10px;
}
.timeline-step p { margin-bottom: 0; }

/* ---------- Badges ---------- */
.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.badge {
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--surface-border);
  font-size: 0.92rem;
  color: var(--text-dim);
  transition: color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}
.badge:hover {
  color: var(--text);
  border-color: var(--accent);
  transform: translateY(-2px);
}

/* ---------- CTA ---------- */
.section-cta { padding: 110px 0; }
.cta-inner { text-align: center; }
.cta-inner .section-lead { margin: 0 auto 32px; }

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--surface-border);
  padding: 28px 0;
  color: var(--text-dim);
  font-size: 0.88rem;
}
.footer-inner {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.footer-sep { opacity: 0.5; }

/* ---------- Scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .blob { animation: none; }
  .scroll-cue span { animation: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .cards { grid-template-columns: 1fr; }
  .timeline { grid-template-columns: 1fr 1fr; }
  .kmp-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .nav-links { gap: 16px; font-size: 0.88rem; }
  .nav-links a:not(.nav-cta):nth-child(1),
  .nav-links a:not(.nav-cta):nth-child(2) { display: none; }
  .timeline { grid-template-columns: 1fr; }
  .hero { padding-top: 140px; }
}