:root {
  --void:   #0b0d0f;
  --panel:  #14181c;
  --raised: #1a1f24;
  --line:   #232a30;
  --line-2: #2f383f;
  --text:   #e8ebed;
  --dim:    #8b959c;
  --faint:  #4e575e;
  --signal: #6ee7d7;
  --signal-deep: #3f8b81;
  --warm:   #e8a34a;
  --warm-deep: #8a6636;
  --alert:  #e2585f;

  --mono: ui-monospace, "SF Mono", "JetBrains Mono", "IBM Plex Mono", Menlo, Consolas, monospace;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--void);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; }
:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; border-radius: 3px; }

.ambient {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(ellipse 1100px 620px at 8% -10%, rgba(110,231,215,0.075), transparent 62%),
    radial-gradient(ellipse 900px 620px at 96% 8%, rgba(232,163,74,0.055), transparent 62%),
    radial-gradient(ellipse 1000px 700px at 50% 108%, rgba(110,231,215,0.035), transparent 65%);
}

.wrap { max-width: 1400px; margin: 0 auto; padding: 0 48px; }
@media (max-width: 900px) { .wrap { padding: 0 24px; } }

/* == reveal == */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s cubic-bezier(.2,.7,.3,1), transform .7s cubic-bezier(.2,.7,.3,1); }
.reveal.is-in { opacity: 1; transform: none; }

/* == nav == */
nav {
  position: sticky; top: 0; z-index: 40;
  border-bottom: 1px solid var(--line);
  background: rgba(11,13,15,.82);
  backdrop-filter: blur(12px);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 58px; }
.brand {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--mono); font-size: 13.5px; letter-spacing: .01em;
  text-decoration: none;
}
.brand-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--signal); box-shadow: 0 0 10px var(--signal);
  animation: breathe 2.6s ease-in-out infinite;
}
@keyframes breathe { 0%,100% { opacity: 1; } 50% { opacity: .35; } }
.nav-links { display: flex; gap: 30px; font-size: 13px; color: var(--dim); }
.nav-links a { text-decoration: none; transition: color .15s; }
.nav-links a:hover { color: var(--text); }
@media (max-width: 720px) { .nav-links { display: none; } }

/* == hero == */
.hero { padding: 84px 0 96px; border-bottom: 1px solid var(--line); }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 64px;
  align-items: center;
}
@media (max-width: 1080px) {
  .hero-grid { grid-template-columns: 1fr; gap: 56px; }
  .hero { padding: 56px 0 64px; }
}

.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--mono); font-size: 11.5px;
  color: var(--signal-deep); letter-spacing: .09em; text-transform: uppercase;
  margin-bottom: 26px;
}
.eyebrow-tick { width: 18px; height: 1px; background: var(--signal-deep); }

h1 {
  font-family: var(--mono);
  font-weight: 500;
  font-size: clamp(36px, 4.4vw, 60px);
  line-height: 1.06;
  letter-spacing: -.035em;
}
.h1-ghost { color: var(--faint); }

.hero-sub { margin-top: 26px; font-size: 17px; color: var(--dim); max-width: 30em; }

.hero-cta { margin-top: 34px; display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--mono); font-size: 12.5px;
  padding: 12px 20px; border-radius: 6px; text-decoration: none;
  border: 1px solid var(--line-2);
  transition: background .16s, color .16s, border-color .16s, transform .16s;
}
.btn-primary { background: var(--text); color: var(--void); border-color: var(--text); }
.btn-primary:hover { background: #fff; transform: translateY(-1px); }
.btn-ghost { color: var(--dim); }
.btn-ghost:hover { color: var(--text); border-color: var(--faint); }

/* readout strip */
.readout {
  margin-top: 44px; padding-top: 22px;
  border-top: 1px solid var(--line);
  display: flex; flex-wrap: wrap; gap: 34px;
}
.readout-item { display: flex; flex-direction: column; gap: 5px; }
.readout dt {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: .07em;
  text-transform: uppercase; color: var(--faint);
}
.readout dd { font-family: var(--mono); font-size: 13px; color: var(--dim); }
.readout-accent { color: var(--warm); }
.readout-null { color: var(--signal); }

/* == demo frame == */
.hero-demo { display: flex; flex-direction: column; gap: 16px; }

.demo-frame {
  border: 1px solid var(--line-2);
  border-radius: 12px;
  background: var(--panel);
  overflow: hidden;
  box-shadow: 0 30px 70px rgba(0,0,0,.55), 0 0 0 1px rgba(255,255,255,.02) inset;
}

.frame-bar {
  display: flex; align-items: center; gap: 7px;
  padding: 11px 16px;
  border-bottom: 1px solid var(--line);
  background: var(--raised);
}
.dot { width: 9px; height: 9px; border-radius: 50%; }
.dot-r { background: #45383a; }
.dot-y { background: #45403a; }
.dot-g { background: #3a4540; }
.frame-title {
  margin-left: 10px; font-family: var(--mono); font-size: 11.5px; color: var(--faint);
}
.rec {
  margin-left: auto; display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--mono); font-size: 10px; letter-spacing: .1em; color: var(--alert);
}
.rec-dot {
  width: 6px; height: 6px; border-radius: 50%; background: var(--alert);
  animation: breathe 1.6s ease-in-out infinite;
}

.frame-body { position: relative; padding: 20px; min-height: 400px; }
@media (max-width: 560px) { .frame-body { min-height: 340px; padding: 14px; } }

.tiles { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.tile {
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: 8px;
  height: 96px;
  display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
}
.tile-initial {
  width: 40px; height: 40px; border-radius: 50%;
  background: #232a30; color: var(--faint);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--mono); font-size: 12px;
}
.tile-wide { grid-column: 1 / -1; height: 132px; align-items: flex-start; padding: 14px; flex-direction: column; gap: 12px; }
.tile-label { font-family: var(--mono); font-size: 10.5px; color: var(--faint); }
.tile-lines { display: flex; flex-direction: column; gap: 8px; width: 100%; }
.tile-lines span { height: 6px; border-radius: 3px; background: #1f262c; display: block; }
.tile-lines span:nth-child(1) { width: 72%; }
.tile-lines span:nth-child(2) { width: 55%; }
.tile-lines span:nth-child(3) { width: 84%; }
.tile-lines span:nth-child(4) { width: 40%; }

.wave {
  display: block; width: 100%; height: 54px; margin-top: 14px;
  border: 1px solid var(--line); border-radius: 8px; background: var(--raised);
}

/* the overlay \2014 the whole point */
.overlay-layer {
  position: absolute; left: 20px; right: 20px; bottom: 20px;
  display: flex; flex-direction: column; gap: 12px; align-items: flex-start;
  transition: opacity .5s ease, filter .5s ease, transform .5s ease;
}
@media (max-width: 560px) { .overlay-layer { left: 14px; right: 14px; bottom: 14px; } }

.demo-frame.is-hidden .overlay-layer {
  opacity: 0; filter: blur(9px); transform: scale(.97) translateY(6px); pointer-events: none;
}

.np-overlay {
  width: 100%;
  background: rgba(16,20,24,.94);
  backdrop-filter: blur(10px);
  border: 1px solid var(--line-2);
  border-radius: 10px;
  padding: 14px 16px;
  box-shadow: 0 18px 44px rgba(0,0,0,.6);
}
.np-head { display: flex; align-items: center; gap: 10px; margin-bottom: 11px; }
.np-badge {
  font-family: var(--mono); font-size: 10px; letter-spacing: .08em;
  color: var(--signal); border: 1px solid rgba(110,231,215,.28);
  border-radius: 4px; padding: 2px 7px;
}
.np-state { margin-left: auto; font-family: var(--mono); font-size: 10.5px; color: var(--faint); }

.np-transcript {
  font-size: 13px; color: var(--dim); line-height: 1.5; min-height: 1.5em;
  border-left: 2px solid var(--line-2); padding-left: 11px;
}
.np-transcript::after {
  content: "\258D"; color: var(--signal); opacity: 0; margin-left: 1px;
}
.np-transcript.is-typing::after { opacity: 1; animation: caret .9s steps(1) infinite; }
@keyframes caret { 50% { opacity: 0; } }

.np-answer { margin-top: 0; font-size: 13px; color: var(--text); line-height: 1.55; }
.np-answer:not(:empty) { margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--line); }
.np-answer .a-line { display: flex; gap: 9px; margin-bottom: 6px; opacity: 0; animation: liftIn .4s ease forwards; }
.np-answer .a-bullet { color: var(--signal); flex-shrink: 0; }
.np-answer code {
  font-family: var(--mono); font-size: 12px;
  background: #1f262c; color: var(--warm); padding: 1px 5px; border-radius: 3px;
}
@keyframes liftIn { to { opacity: 1; } }

/* micpill */
.micpill {
  display: inline-flex; align-items: center; gap: 10px;
  background: rgba(16,20,24,.94);
  border: 1px solid var(--line-2);
  border-radius: 999px;
  padding: 8px 16px 8px 12px;
  box-shadow: 0 12px 30px rgba(0,0,0,.5);
}
.mic-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--faint); transition: background .3s, box-shadow .3s;
}
.mic-dot.is-live { background: var(--warm); box-shadow: 0 0 10px 2px rgba(232,163,74,.4); animation: breathe 1.5s ease-in-out infinite; }
.bars { display: flex; align-items: center; gap: 2.5px; height: 15px; }
.bars span {
  width: 2.5px; border-radius: 2px; background: var(--faint);
  transition: background .3s;
  transform: scaleY(.3);
}
.bars.is-live span { background: var(--signal); animation: bar 1s ease-in-out infinite; }
.bars.is-live span:nth-child(1) { height: 32%; animation-delay: -.85s; }
.bars.is-live span:nth-child(2) { height: 68%; animation-delay: -.55s; }
.bars.is-live span:nth-child(3) { height: 100%; animation-delay: -.28s; }
.bars.is-live span:nth-child(4) { height: 54%; animation-delay: -.98s; }
.bars.is-live span:nth-child(5) { height: 82%; animation-delay: -.12s; }
.bars.is-live span:nth-child(6) { height: 42%; animation-delay: -.7s; }
.bars span:not(.is-live) { height: 30%; }
@keyframes bar { 0%,100% { transform: scaleY(.3); } 50% { transform: scaleY(1); } }
.micpill-label { font-family: var(--mono); font-size: 11.5px; color: var(--faint); }

/* "what they record" proof state */
.empty-proof {
  position: absolute; left: 20px; right: 20px; bottom: 20px;
  border: 1px dashed var(--line-2); border-radius: 10px;
  padding: 20px; overflow: hidden;
  opacity: 0; transform: translateY(8px); pointer-events: none;
  transition: opacity .5s ease .12s, transform .5s ease .12s;
}
.demo-frame.is-hidden .empty-proof { opacity: 1; transform: none; }
.empty-scan {
  position: absolute; left: 0; right: 0; top: -100%; height: 100%;
  background: linear-gradient(180deg, transparent, rgba(110,231,215,.09), transparent);
}
.demo-frame.is-hidden .empty-scan { animation: scan 2.4s ease-in-out infinite; }
@keyframes scan { 0% { top: -100%; } 100% { top: 100%; } }
.empty-text { display: flex; align-items: baseline; gap: 12px; position: relative; }
.empty-count { font-family: var(--mono); font-size: 32px; color: var(--signal); line-height: 1; }
.empty-label { font-family: var(--mono); font-size: 12px; color: var(--faint); }

/* view switch */
.viewswitch {
  display: inline-flex; gap: 3px; padding: 3px;
  border: 1px solid var(--line); border-radius: 8px; background: var(--panel);
  align-self: flex-start;
}
.vs-btn {
  font-family: var(--mono); font-size: 12px;
  padding: 8px 15px; border-radius: 6px;
  background: none; border: none; color: var(--faint);
  cursor: pointer; transition: background .18s, color .18s;
}
.vs-btn:hover { color: var(--dim); }
.vs-btn.is-active { background: var(--raised); color: var(--text); }

/* == sections == */
section { padding: 96px 0; border-bottom: 1px solid var(--line); }
.section-last { border-bottom: none; padding-bottom: 72px; }
@media (max-width: 900px) { section { padding: 64px 0; } }

.section-head { margin-bottom: 52px; }
.section-tag {
  display: block; font-family: var(--mono); font-size: 11px;
  letter-spacing: .1em; text-transform: uppercase;
  color: var(--signal-deep); margin-bottom: 14px;
}
h2 {
  font-family: var(--mono); font-weight: 500;
  font-size: clamp(21px, 2.3vw, 30px); letter-spacing: -.025em; line-height: 1.2;
  max-width: 20em;
}

/* == diagram == */
.diagram { margin-bottom: 64px; }
@media (max-width: 900px) { .diagram { display: none; } }
.diagram-svg { width: 100%; height: auto; display: block; overflow: visible; }

.pipe { fill: none; stroke: var(--line-2); stroke-width: 1.5; }
.pipe-cy { stroke: rgba(110,231,215,.2); }
.pipe-am { stroke: rgba(232,163,74,.2); }

.flow {
  fill: none; stroke: var(--signal-deep); stroke-width: 1.5;
  stroke-dasharray: 5 14; opacity: .8;
  animation: flowdash 1.5s linear infinite;
}
.flow-cy { stroke: var(--signal); opacity: .5; }
.flow-am { stroke: var(--warm); opacity: .5; animation-duration: 1.9s; }
@keyframes flowdash { to { stroke-dashoffset: -38; } }

.packet { fill: var(--signal); filter: drop-shadow(0 0 4px rgba(110,231,215,.8)); }
.packet-cy { fill: var(--signal); }
.packet-am { fill: var(--warm); filter: drop-shadow(0 0 4px rgba(232,163,74,.8)); }

.node rect { fill: var(--panel); stroke: var(--line-2); stroke-width: 1; }
.node-cy rect { stroke: rgba(110,231,215,.35); }
.node-am rect { stroke: rgba(232,163,74,.35); }
.n-title { fill: var(--text); font-family: var(--sans); font-size: 14px; font-weight: 600; }
.n-tag { fill: var(--faint); font-family: var(--mono); font-size: 11px; }
.branch-note {
  fill: var(--faint); font-family: var(--mono); font-size: 10px;
  letter-spacing: .06em; text-anchor: middle;
}

/* == steps == */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.step { background: var(--void); padding: 26px 24px; display: grid; grid-template-columns: 30px 1fr; gap: 14px; }
.step-idx { font-family: var(--mono); font-size: 11.5px; color: var(--signal-deep); padding-top: 2px; }
.step-title { font-weight: 600; font-size: 14.5px; margin-bottom: 8px; }
.step p { font-size: 13.5px; color: var(--dim); line-height: 1.55; }

/* == stack == */
.stack-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1px; background: var(--line); border: 1px solid var(--line);
}
.stack-item { background: var(--void); padding: 22px 20px; transition: background .18s; }
.stack-item:hover { background: var(--panel); }
.stack-role {
  font-family: var(--mono); font-size: 10px; letter-spacing: .08em;
  text-transform: uppercase; color: var(--faint); margin-bottom: 7px;
}
.stack-name { font-size: 15px; font-weight: 500; }

.note {
  margin-top: 32px; background: var(--panel);
  border: 1px solid var(--line); border-left: 2px solid var(--signal-deep);
  border-radius: 4px; padding: 22px 24px;
  font-size: 14.5px; color: var(--dim); max-width: 62em;
}
.note strong { color: var(--text); font-weight: 600; }

.source-sub { font-size: 17px; color: var(--dim); max-width: 40em; margin-bottom: 28px; }

/* == footer == */
footer { padding: 44px 0 72px; }
.foot-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 18px; }
.foot-links { display: flex; gap: 24px; font-family: var(--mono); font-size: 12.5px; color: var(--faint); }
.foot-links a { text-decoration: none; transition: color .15s; }
.foot-links a:hover { color: var(--dim); }
.foot-meta { font-family: var(--mono); font-size: 11.5px; color: var(--faint); }

/* == reduced motion == */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}