:root {
  color-scheme: dark;
  --em-ink: #e8eef2;
  --em-muted: #8a9aa6;
  --em-surface: #0c1116;
  --em-panel: #141b22;
  --em-line: #243040;
  --em-mirror: #3dbaa8;
  --em-local: #6aa3d8;
  --em-remote: #d4a574;
  --em-divergent: #e07a6a;
  --em-font-sans: "IBM Plex Sans", "Source Sans 3", "Segoe UI", sans-serif;
  --em-font-mono: "IBM Plex Mono", ui-monospace, "Cascadia Code", monospace;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--em-font-sans);
  color: var(--em-ink);
  background: var(--em-surface);
  line-height: 1.55;
}

.atmosphere {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(ellipse 90% 55% at 12% 8%, rgba(42, 90, 138, 0.28), transparent 55%),
    radial-gradient(ellipse 70% 50% at 88% 18%, rgba(107, 74, 31, 0.22), transparent 50%),
    linear-gradient(165deg, #0a1016 0%, #0c1116 45%, #101820 100%);
}

a {
  color: var(--em-mirror);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: #6fd4c4;
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 20px clamp(20px, 4vw, 48px);
  border-bottom: 1px solid transparent;
  animation: fade-down 0.7s ease both;
}

.brand-link img {
  display: block;
  height: 34px;
  width: auto;
}

.top-nav {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 0.92rem;
}

.top-nav a {
  color: var(--em-muted);
  text-decoration: none;
}

.top-nav a:hover {
  color: var(--em-ink);
}

.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
  min-height: calc(100vh - 90px);
  padding: clamp(40px, 8vh, 96px) clamp(20px, 4vw, 48px) clamp(48px, 8vh, 88px);
}

.eyebrow {
  margin: 0 0 12px;
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--em-muted);
}

.brand-display {
  margin: 0;
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  animation: rise 0.85s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.lede {
  margin: 20px 0 0;
  max-width: 36rem;
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--em-muted);
  animation: rise 0.9s 0.08s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
  animation: rise 0.95s 0.14s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid var(--em-line);
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.cta.primary {
  background: var(--em-mirror);
  border-color: var(--em-mirror);
  color: #061018;
}

.cta.primary:hover {
  background: #6fd4c4;
  border-color: #6fd4c4;
  color: #061018;
}

.cta.ghost {
  color: var(--em-ink);
  background: transparent;
}

.cta.ghost:hover {
  border-color: var(--em-muted);
  color: var(--em-ink);
}

.hero-visual {
  animation: mirror-in 1.1s 0.2s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.mirror-plane {
  display: grid;
  grid-template-columns: 1fr 2px 1fr;
  gap: 0;
  min-height: 280px;
  border: 1px solid var(--em-line);
  background:
    linear-gradient(180deg, rgba(20, 27, 34, 0.9), rgba(12, 17, 22, 0.95));
}

.pane {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 16px;
  padding: 32px 24px;
}

.pane-label {
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--em-muted);
}

.pane code {
  font-family: var(--em-font-mono);
  font-size: clamp(0.95rem, 1.6vw, 1.15rem);
  font-weight: 500;
}

.pane.local code {
  color: var(--em-local);
}

.pane.remote code {
  color: var(--em-remote);
}

.mirror-edge {
  background: var(--em-mirror);
  box-shadow: 0 0 24px rgba(61, 186, 168, 0.35);
  animation: pulse-edge 3.2s ease-in-out infinite;
}

.terminal-section,
.run,
.honest {
  padding: 72px clamp(20px, 4vw, 48px);
  max-width: 960px;
  margin: 0 auto;
}

.terminal-section h2,
.run h2,
.honest h2 {
  margin: 0;
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  letter-spacing: -0.02em;
}

.section-lede {
  margin: 12px 0 28px;
  color: var(--em-muted);
  max-width: 40rem;
}

.terminal {
  border: 1px solid var(--em-line);
  background: #080c10;
  overflow: hidden;
}

.terminal-chrome {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--em-line);
  background: #0f151b;
}

.terminal-chrome span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #3a4550;
}

.terminal-chrome em {
  margin-left: 10px;
  font-style: normal;
  font-family: var(--em-font-mono);
  font-size: 0.78rem;
  color: var(--em-muted);
}

.terminal-body {
  margin: 0;
  padding: 20px 18px 28px;
  min-height: 320px;
  font-family: var(--em-font-mono);
  font-size: 0.82rem;
  line-height: 1.55;
  white-space: pre-wrap;
  color: var(--em-ink);
}

.terminal-body .ok {
  color: var(--em-mirror);
}

.terminal-body .dim {
  color: var(--em-muted);
}

.terminal-body .div {
  color: var(--em-divergent);
}

.terminal-body .cmd {
  color: var(--em-local);
}

.steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 28px;
}

.steps li strong {
  display: block;
  margin-bottom: 10px;
  font-size: 1rem;
}

.steps pre {
  margin: 0;
  padding: 16px 18px;
  overflow-x: auto;
  border-left: 2px solid var(--em-mirror);
  background: rgba(20, 27, 34, 0.85);
  font-family: var(--em-font-mono);
  font-size: 0.85rem;
  color: var(--em-ink);
}

.proof-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 18px;
}

.proof-list li {
  padding-left: 16px;
  border-left: 2px solid var(--em-line);
  color: var(--em-muted);
}

.proof-list strong {
  color: var(--em-ink);
}

.disclaimer {
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--em-line);
  font-size: 0.9rem;
  color: var(--em-muted);
}

.foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 28px clamp(20px, 4vw, 48px) 40px;
  border-top: 1px solid var(--em-line);
  color: var(--em-muted);
  font-size: 0.85rem;
}

.foot img {
  opacity: 0.85;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes fade-down {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes mirror-in {
  from {
    opacity: 0;
    transform: scale(0.97) translateX(12px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes pulse-edge {
  0%,
  100% {
    opacity: 0.75;
    box-shadow: 0 0 18px rgba(61, 186, 168, 0.25);
  }
  50% {
    opacity: 1;
    box-shadow: 0 0 28px rgba(61, 186, 168, 0.45);
  }
}

@media (max-width: 860px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 48px;
  }

  .hero-visual {
    order: -1;
  }

  .mirror-plane {
    min-height: 200px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  html {
    scroll-behavior: auto;
  }
}