:root {
  --paper: #f2efe7;
  --paper-2: #e8e3d8;
  --white: #fffdf7;
  --ink: #11110f;
  --ink-soft: #282824;
  --muted: #68665f;
  --line: rgba(17, 17, 15, 0.16);
  --line-light: rgba(255, 253, 247, 0.16);
  --acid: #c9ff5a;
  --sky: #38bdf8;
  --orange: #ff7a38;
  --red: #f04444;
  --green: #72a778;
  --violet: #a78bfa;
  --sans: "DM Sans", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  --display: "Manrope", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  --mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
  --shell: 1240px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button, input { font: inherit; }
button { color: inherit; }
::selection { color: var(--ink); background: var(--acid); }

.shell { width: min(calc(100% - 48px), var(--shell)); margin-inline: auto; }
.section-pad { padding: 132px 0; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; z-index: 1000; top: 10px; left: 10px; padding: 10px 14px; background: var(--acid); color: var(--ink); transform: translateY(-150%); transition: transform .2s; }
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: fixed;
  z-index: 100;
  top: 0;
  right: 0;
  left: 0;
  height: 72px;
  border-bottom: 1px solid rgba(255,255,255,.1);
  color: var(--white);
  background: rgba(17,17,15,.76);
  backdrop-filter: saturate(140%) blur(18px);
  -webkit-backdrop-filter: saturate(140%) blur(18px);
}
.nav-shell { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.tracer-wordmark { display: inline-flex; align-items: center; gap: 11px; font: 800 17px/1 var(--display); letter-spacing: .08em; }
.tracer-dots { display: inline-flex; gap: 4px; }
.tracer-dots i { width: 7px; height: 7px; border-radius: 50%; }
.tracer-dots i:nth-child(1) { background: var(--sky); }
.tracer-dots i:nth-child(2) { background: var(--orange); }
.tracer-dots i:nth-child(3) { background: var(--red); }
.lab-label { margin-left: 2px; padding-left: 13px; border-left: 1px solid rgba(255,255,255,.25); color: rgba(255,255,255,.5); font: 500 9px/1 var(--mono); letter-spacing: .16em; }
.desktop-nav { display: flex; align-items: center; gap: 27px; margin-left: auto; }
.desktop-nav a { color: rgba(255,255,255,.67); font-size: 13px; transition: color .2s; }
.desktop-nav a:hover, .desktop-nav a:focus-visible { color: var(--white); }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.nav-call { padding-bottom: 2px; border-bottom: 1px solid rgba(201,255,90,.38); color: rgba(255,255,255,.72); font-size: 12px; font-weight: 600; }
.nav-call:hover, .nav-call:focus-visible { border-color: var(--acid); color: var(--acid); }
.yc-chip { display: inline-flex; align-items: center; gap: 7px; color: rgba(255,255,255,.68); font-size: 10px; }
.yc-chip span { display: grid; width: 22px; height: 22px; place-items: center; background: #ff5a1f; color: white; font: 700 13px/1 Arial, sans-serif; }
.yc-chip b { font-weight: 500; }
.hero-yc { width: max-content; margin-top: 18px; color: rgba(255,255,255,.68); }
.hero-yc:hover, .hero-yc:focus-visible { color: var(--white); }
.button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; gap: 13px; padding: 0 20px; border: 1px solid transparent; font-size: 14px; font-weight: 600; transition: transform .18s, background .18s, border-color .18s, color .18s; }
.button:hover { transform: translateY(-2px); }
.button-small { min-height: 36px; padding: 0 14px; font-size: 12px; }
.button-dark { background: var(--ink); color: var(--white); }
.site-header .button-dark { background: var(--white); color: var(--ink); }
.button-dark:hover { background: #000; }
.site-header .button-dark:hover { background: var(--acid); }
.button-lime { background: var(--acid); color: var(--ink); }
.button-lime:hover { background: #d7ff83; }
.button-outline-light { border-color: rgba(255,255,255,.28); color: var(--white); }
.button-outline-light:hover { border-color: rgba(255,255,255,.75); background: rgba(255,255,255,.06); }
.button-outline { border-color: var(--line); color: var(--ink); }
.button-outline:hover { border-color: var(--ink); }
.menu-button { display: none; width: 40px; height: 40px; border: 0; background: transparent; align-content: center; cursor: pointer; }
.menu-button > span:not(.sr-only) { display: block; width: 22px; height: 1px; margin: 5px auto; background: currentColor; transition: transform .2s, opacity .2s; }
.menu-button[aria-expanded="true"] > span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.menu-button[aria-expanded="true"] > span:nth-child(2) { opacity: 0; }
.menu-button[aria-expanded="true"] > span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.mobile-nav { position: fixed; inset: 72px 0 auto; padding: 18px 24px 28px; border-bottom: 1px solid rgba(255,255,255,.15); background: var(--ink); }
.mobile-nav a { display: block; padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,.1); font: 600 18px/1.2 var(--display); }

.hero { position: relative; overflow: hidden; padding-top: 72px; color: var(--white); background: var(--ink); }
.hero::before { content: ""; position: absolute; width: 700px; height: 700px; top: -300px; right: -200px; border-radius: 50%; background: radial-gradient(circle, rgba(201,255,90,.10), transparent 65%); pointer-events: none; }
.hero-noise { position: absolute; inset: 0; opacity: .035; pointer-events: none; background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(https://tracerml.ai/%23n)' opacity='.45'/%3E%3C/svg%3E"); }
.hero-grid { position: relative; display: grid; grid-template-columns: minmax(0, .88fr) minmax(500px, 1.12fr); gap: 84px; align-items: center; min-height: 780px; padding-top: 72px; padding-bottom: 72px; }
.eyebrow { display: flex; align-items: center; gap: 11px; margin: 0 0 25px; color: rgba(255,255,255,.48); font: 600 10px/1 var(--mono); letter-spacing: .16em; text-transform: uppercase; }
.eyebrow-line { width: 27px; height: 1px; background: currentColor; }
.eyebrow.dark { color: var(--muted); }
.eyebrow.light { color: rgba(255,255,255,.48); }
.echo-title-lockup { display: flex; align-items: center; gap: 12px; margin: 0 0 12px; color: rgba(255,255,255,.55); font: 600 18px/1 var(--display); }
.release-label { padding: 5px 7px; border: 1px solid rgba(201,255,90,.45); color: var(--acid); font: 600 8px/1 var(--mono); letter-spacing: .12em; }
.echo-title-lockup img { width: 52px; height: auto; }
.hero h1 { max-width: 700px; margin: 0; font: 700 clamp(46px, 5.15vw, 76px)/.99 var(--display); letter-spacing: -.055em; }
.hero h1 em { color: var(--acid); font-style: normal; }
.hero-lede { max-width: 570px; margin: 30px 0 34px; color: rgba(255,255,255,.63); font-size: clamp(17px, 1.5vw, 20px); line-height: 1.62; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-proof { display: flex; align-items: center; gap: 9px; margin: 22px 0 0; color: rgba(255,255,255,.43); font: 500 10px/1.5 var(--mono); letter-spacing: .03em; }
.status-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--acid); box-shadow: 0 0 0 4px rgba(201,255,90,.1); }

.orchestration-stage { position: relative; min-height: 650px; overflow: hidden; border: 1px solid rgba(255,255,255,.16); background: #171815; box-shadow: 0 34px 100px rgba(0,0,0,.28); }
.orchestration-stage::before { content: ""; position: absolute; inset: 0; opacity: .32; background: linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px); background-size: 32px 32px; pointer-events: none; }
.stage-topline, .stage-footer { position: relative; display: flex; align-items: center; justify-content: space-between; min-height: 50px; padding: 0 20px; border-bottom: 1px solid rgba(255,255,255,.12); color: rgba(255,255,255,.4); font: 500 9px/1 var(--mono); letter-spacing: .12em; }
.stage-controls { display: flex; align-items: center; gap: 14px; }
.stage-state { display: inline-flex; align-items: center; gap: 7px; color: var(--acid); }
.stage-state b { min-width: 88px; font: inherit; text-align: right; transition: opacity .18s; }
.stage-state i { width: 5px; height: 5px; border-radius: 50%; background: var(--acid); box-shadow: 0 0 12px var(--acid); animation: blink 1.5s infinite; }
.motion-toggle { padding: 4px 6px; border: 1px solid rgba(255,255,255,.16); color: rgba(255,255,255,.48); background: transparent; font: 500 7px/1 var(--mono); letter-spacing: .1em; cursor: pointer; }
.motion-toggle:hover, .motion-toggle:focus-visible { border-color: rgba(255,255,255,.5); color: var(--white); }
.motion-toggle:disabled { opacity: .45; cursor: default; }
.prompt-card { --state-accent: var(--acid); position: relative; display: flex; min-height: 96px; align-items: center; gap: 15px; margin: 24px 24px 10px; overflow: hidden; padding: 15px 20px; border: 1px solid rgba(255,255,255,.12); background: rgba(255,255,255,.035); transition: border-color .32s ease, background-color .32s ease, box-shadow .32s ease; }
.prompt-copy { min-width: 0; flex: 1; }
.prompt-label { display: block; margin-bottom: 8px; color: var(--state-accent); font: 600 7px/1 var(--mono); letter-spacing: .13em; transition: color .45s ease; }
.prompt-card p { min-height: 44px; margin: 0; color: rgba(255,255,255,.88); font: 500 14px/1.55 var(--mono); transform: translateY(0); transition: opacity .13s ease, transform .13s ease; }
.prompt-card p.changing { opacity: 0; transform: translateY(-7px); }
.prompt-card p.arriving { animation: prompt-arrive .42s cubic-bezier(.2,.82,.24,1) both; }
.prompt-card.is-arriving { animation: request-arrive .7s cubic-bezier(.18,.82,.25,1) both; }
.prompt-card.is-typing p::after { content: ""; display: inline-block; width: 7px; height: 1.05em; margin-left: 3px; vertical-align: -.16em; background: var(--state-accent); animation: typing-cursor .72s steps(1,end) infinite; }
.prompt-symbol { display: grid; width: 18px; height: 22px; flex: 0 0 18px; place-items: center; color: var(--state-accent); font: 600 18px/22px var(--mono); transition: color .45s ease, transform .32s ease; }
.prompt-sequence { align-self: flex-start; flex: 0 0 auto; margin-top: 4px; color: rgba(255,255,255,.32); font: 500 7px/1 var(--mono); letter-spacing: .1em; }
.prompt-scan { position: absolute; inset: 0 auto 0 -35%; width: 22%; opacity: 0; background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--state-accent) 16%, transparent), transparent); transform: skewX(-13deg); pointer-events: none; }
.prompt-card.is-switching { border-color: color-mix(in srgb, var(--state-accent) 52%, transparent); background: color-mix(in srgb, var(--state-accent) 7%, #171815); box-shadow: inset 3px 0 0 var(--state-accent), 0 0 30px color-mix(in srgb, var(--state-accent) 8%, transparent); }
.prompt-card.is-switching .prompt-symbol { transform: translateX(3px); }
.prompt-card.is-switching .prompt-scan { animation: prompt-scan .55s ease-out both; }
.prompt-card.is-submitting { border-color: color-mix(in srgb, var(--state-accent) 72%, transparent); background: color-mix(in srgb, var(--state-accent) 10%, #171815); box-shadow: inset 4px 0 0 var(--state-accent), 0 0 42px color-mix(in srgb, var(--state-accent) 15%, transparent); }
.prompt-card.is-submitting .prompt-symbol { transform: translateX(6px) scale(1.12); }
.prompt-card.is-submitting .prompt-scan { animation: request-submit .82s cubic-bezier(.2,.72,.2,1) both; }
.echo-frequency-panel { position: relative; margin: 14px 24px 0; padding-top: 13px; border-top: 1px solid rgba(255,255,255,.09); }
.frequency-caption { display: flex; align-items: center; justify-content: space-between; gap: 20px; color: rgba(255,255,255,.3); font: 500 7px/1 var(--mono); letter-spacing: .1em; transition: opacity .2s ease; }
.frequency-caption b { color: rgba(201,255,90,.72); font: inherit; }
.echo-frequency { position: relative; z-index: 1; display: flex; height: 236px; align-items: center; justify-content: center; gap: clamp(3px, .55vw, 7px); overflow: hidden; padding: 24px 8px; }
.echo-frequency::before { content: ""; position: absolute; z-index: -1; right: 0; left: 0; top: 50%; height: 1px; background: rgba(255,255,255,.075); }
.echo-frequency::after { content: ""; position: absolute; z-index: -2; top: 50%; left: 50%; width: 78%; height: 72%; border-radius: 50%; background: radial-gradient(ellipse, rgba(201,255,90,.065), transparent 68%); transform: translate(-50%, -50%); }
.frequency-spark { position: absolute; z-index: 4; top: 16%; bottom: 16%; left: -10%; width: 2px; opacity: 0; background: linear-gradient(180deg, transparent, var(--sky) 24%, var(--acid) 52%, var(--orange) 78%, transparent); box-shadow: 0 0 9px var(--acid), 0 0 24px rgba(56,189,248,.48); pointer-events: none; }
.frequency-spark::after { content: ""; position: absolute; top: 0; right: 0; bottom: 0; width: 64px; background: linear-gradient(90deg, transparent, rgba(201,255,90,.09)); }
.frequency-bar { --bar-color: var(--sky); display: block; width: clamp(4px, .72vw, 9px); height: var(--bar-height, 24%); flex: 1 1 auto; max-width: 10px; border-radius: 1px; background: var(--bar-color); box-shadow: 0 0 12px color-mix(in srgb, var(--bar-color) 20%, transparent); opacity: .94; transform-origin: center; transition: height 1.02s cubic-bezier(.22,.78,.2,1), box-shadow .4s ease; animation: frequency-breathe 3.6s ease-in-out var(--bar-delay, 0s) infinite; }
.orchestration-stage.is-submitting .frequency-bar { box-shadow: 0 0 20px color-mix(in srgb, var(--bar-color) 38%, transparent); }
.orchestration-stage.is-morphing .frequency-spark { animation: frequency-spark-sweep .88s cubic-bezier(.18,.66,.2,1) both; }
.orchestration-stage.is-morphing .frequency-bar { animation: frequency-breathe 3.6s ease-in-out var(--bar-delay, 0s) infinite, frequency-charge .42s ease-out calc(var(--bar-order, 0) * 16ms) both; }
.frequency-resolution { display: flex; min-height: 33px; align-items: center; justify-content: center; gap: 13px; border-top: 1px solid rgba(255,255,255,.08); color: rgba(255,255,255,.38); font: 500 7px/1 var(--mono); letter-spacing: .12em; }
.frequency-resolution span { display: flex; gap: 4px; }
.frequency-resolution i { width: 5px; height: 5px; border-radius: 50%; background: var(--sky); }
.frequency-resolution i:nth-child(2) { background: var(--green); }
.frequency-resolution i:nth-child(3) { background: var(--orange); }
.frequency-resolution i:nth-child(4) { background: var(--red); }
.frequency-resolution b { color: var(--acid); font: inherit; }
.orchestration-stage.is-changing .stage-state b,
.orchestration-stage.is-changing .frequency-caption,
.orchestration-stage.is-changing .meter-label { opacity: .42; }
.orchestration-stage.is-paused .stage-state i,
.orchestration-stage.is-paused .frequency-bar { animation-play-state: paused; }
.intelligence-meter { position: relative; margin: 8px 24px 25px; }
.meter-label, .meter-scale { display: flex; justify-content: space-between; color: rgba(255,255,255,.35); font: 500 8px/1 var(--mono); letter-spacing: .08em; }
.meter-label { transition: opacity .2s ease; }
.meter-label b { color: var(--acid); font-weight: 500; }
.meter-track { height: 7px; margin: 10px 0 8px; background: rgba(255,255,255,.08); }
.meter-track i { display: block; width: 78%; height: 100%; background: linear-gradient(90deg, var(--sky), var(--orange) 34%, var(--red) 60%, var(--acid)); transition: width .7s cubic-bezier(.2,.7,.2,1); }
.stage-footer { position: absolute; inset: auto 0 0; min-height: 45px; border-top: 1px solid rgba(255,255,255,.12); border-bottom: 0; }
.lab-intro { position: relative; display: flex; min-height: 92px; align-items: center; justify-content: space-between; gap: 30px; border-top: 1px solid rgba(255,255,255,.11); }
.lab-intro p { margin: 0; color: rgba(255,255,255,.56); font-size: 14px; }
.lab-intro strong { color: var(--white); font-weight: 600; }
.lab-intro a { color: var(--acid); font: 500 10px/1 var(--mono); letter-spacing: .09em; text-transform: uppercase; }

.section-heading h2, .thesis h2, .proof h2, .manifesto h2, .final-cta h2 { margin: 0; font: 700 clamp(40px, 5vw, 70px)/1 var(--display); letter-spacing: -.055em; }
.split-heading { display: grid; grid-template-columns: 1.4fr .6fr; gap: 90px; align-items: end; margin-bottom: 70px; }
.split-heading > p { max-width: 470px; margin: 0 0 5px; color: var(--muted); font-size: 18px; line-height: 1.65; }

.thesis { background: var(--paper); }
.thesis-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 100px; padding-bottom: 96px; }
.equation { margin: 0 0 32px; color: var(--red); font: 500 16px/1 var(--mono); letter-spacing: .07em; }
.thesis-copy { max-width: 540px; padding-top: 60px; }
.thesis-copy p { margin: 0 0 23px; color: var(--muted); font-size: 18px; line-height: 1.7; }
.thesis-copy .lead-quote { margin-bottom: 28px; color: var(--ink); font: 600 clamp(25px, 2.7vw, 36px)/1.2 var(--display); letter-spacing: -.035em; }
.symphony-native { --symphony-blue: var(--sky); --symphony-green: var(--green); --symphony-orange: var(--orange); --symphony-red: var(--red); position: relative; margin: 0; }
.symphony-native::after { display: none; }
.symphony-native__header { padding: clamp(34px,4.6vw,66px) 0 0; }
.symphony-native__equation { margin: 0; color: var(--green); font: 700 clamp(43px,5.4vw,76px)/.98 var(--display); letter-spacing: -.055em; text-transform: uppercase; }
.symphony-native__quote { display: grid; gap: 5px; margin: clamp(26px,3.2vw,43px) 0 0; padding: 0; border: 0; }
.symphony-native__quote strong { color: var(--ink); font: 700 clamp(22px,2.25vw,32px)/1.15 var(--display); letter-spacing: -.035em; }
.symphony-native__quote span { color: var(--muted); font-size: clamp(17px,1.55vw,22px); }
.symphony-native__composition { display: grid; grid-template-columns: minmax(390px,1fr) 80px minmax(390px,1.05fr); gap: clamp(26px,3vw,50px); align-items: center; padding: clamp(54px,6.4vw,92px) 0 clamp(50px,5.4vw,76px); }
.symphony-native__voices { display: grid; gap: clamp(21px,2.4vw,34px); }
.symphony-native__voice { --voice-color: var(--symphony-blue); display: grid; grid-template-columns: 72px 1fr; gap: 18px; align-items: center; }
.symphony-native__voice--cello { --voice-color: var(--symphony-green); }
.symphony-native__voice--horn { --voice-color: var(--symphony-orange); }
.symphony-native__voice--drums { --voice-color: var(--symphony-red); }
.symphony-native__label, .symphony-native__whole-label { margin: 0; color: var(--muted); font: 600 9px/1 var(--mono); letter-spacing: .09em; text-transform: uppercase; }
.symphony-native__frequency { display: flex; height: 39px; align-items: center; gap: clamp(5px,.75vw,10px); }
.symphony-native__frequency i { display: block; width: clamp(5px,.5vw,8px); height: var(--h); min-height: 4px; background: var(--voice-color); transform-origin: center; animation: symphony-voice 4.8s ease-in-out var(--d) infinite alternate; }
.symphony-native__operator { display: grid; justify-items: center; gap: 12px; color: rgba(114,167,120,.34); }
.symphony-native__operator > span { font: 500 clamp(58px,6vw,86px)/.7 var(--display); letter-spacing: -.08em; }
.symphony-native__operator small { color: var(--muted); font: 500 7px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; }
.symphony-native__whole { display: grid; align-self: stretch; align-content: center; }
.symphony-native__whole-label { margin-bottom: 24px; color: var(--green); font-size: 12px; }
.symphony-native__frequency--whole { --voice-color: var(--symphony-blue); height: 118px; gap: clamp(5px,.65vw,9px); }
.symphony-native__frequency--whole i { width: clamp(7px,.72vw,11px); animation-duration: 5.6s; }
.symphony-native__frequency--whole i:nth-child(4n + 2) { --voice-color: var(--symphony-green); }
.symphony-native__frequency--whole i:nth-child(4n + 3) { --voice-color: var(--symphony-orange); }
.symphony-native__frequency--whole i:nth-child(4n + 4) { --voice-color: var(--symphony-red); }
.symphony-native__result { display: grid; gap: 7px; margin-top: 25px; }
.symphony-native__result strong { font: 700 clamp(18px,1.7vw,24px)/1.1 var(--display); letter-spacing: -.03em; text-transform: uppercase; }
.symphony-native__result span { color: var(--muted); font-size: clamp(14px,1.1vw,17px); }
.symphony-native__thesis { margin: 0; padding: 28px 0 0; border-top: 1px solid var(--line); color: var(--ink); font: 700 clamp(14px,1.35vw,19px)/1.35 var(--display); letter-spacing: -.02em; text-align: center; text-transform: uppercase; }

.echo-product { border-top: 1px solid var(--line); background: var(--paper); }
.context-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.context-card { display: flex; min-height: 550px; flex-direction: column; padding: 24px 28px 30px; border-right: 1px solid var(--line); background: rgba(255,253,247,.28); }
.context-card:last-child { border-right: 0; }
.context-index { color: var(--muted); font: 500 9px/1 var(--mono); letter-spacing: .09em; }
.context-visual { height: 230px; margin: 32px 0 34px; }
.context-card h3 { margin: auto 0 10px; font: 700 27px/1.12 var(--display); letter-spacing: -.035em; }
.context-card > p { min-height: 72px; margin: 0 0 28px; color: var(--muted); font-size: 15px; line-height: 1.6; }
.context-card > a { width: max-content; border-bottom: 1px solid currentColor; font: 600 11px/1.6 var(--mono); }
.chat-visual { display: flex; flex-direction: column; justify-content: center; gap: 13px; padding: 22px; background: var(--paper-2); }
.chat-visual p { width: fit-content; max-width: 88%; margin: 0; padding: 13px 15px; font-size: 12px; }
.chat-visual .question { align-self: flex-end; background: var(--ink); color: var(--white); }
.chat-visual .answer { display: flex; align-items: center; gap: 8px; background: var(--white); border: 1px solid var(--line); }
.chat-visual .answer i { width: 6px; height: 6px; border-radius: 50%; background: var(--acid); border: 1px solid var(--ink); }
.code-visual { display: grid; place-items: center start; padding: 22px; overflow: hidden; background: var(--ink); color: #e9e6dc; }
.code-visual code { font: 400 10px/1.7 var(--mono); white-space: nowrap; }
.code-muted { color: #818078; }
.code-string { color: var(--acid); }
.agent-visual { display: grid; align-content: center; gap: 10px; }
.agent-visual > div { display: grid; grid-template-columns: 75px 1fr; align-items: center; gap: 12px; color: var(--muted); font: 500 8px/1 var(--mono); letter-spacing: .08em; }
.agent-visual i { display: block; height: 13px; background: var(--paper-2); }
.agent-visual div:nth-child(1) i { width: 57%; background: var(--sky); }
.agent-visual div:nth-child(2) i { width: 83%; background: var(--orange); }
.agent-visual div:nth-child(3) i { width: 100%; background: var(--red); }
.agent-visual div:nth-child(4) i { width: 69%; background: var(--green); }

.team-efficiency { border-top: 1px solid var(--line); background: var(--paper-2); }
.efficiency-heading { align-items: start; margin-bottom: 54px; }
.efficiency-intro { display: grid; max-width: 460px; justify-items: start; gap: 18px; }
.efficiency-intro p { max-width: 440px; margin: 0; color: var(--muted); font-size: 17px; line-height: 1.55; }
.efficiency-intro small { max-width: 390px; color: var(--muted); font: 500 9px/1.55 var(--mono); letter-spacing: .04em; text-transform: uppercase; }
.efficiency-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(28px, 4vw, 64px); }
.efficiency-card { --signal: var(--sky); position: relative; min-height: 0; padding: 24px 0 0; border-top: 1px solid var(--ink); background: transparent; }
.efficiency-card::before { content: ""; position: absolute; top: -2px; left: 0; width: 54px; height: 3px; background: var(--signal); }
.efficiency-coordinate { --signal: var(--orange); }
.efficiency-measure { --signal: var(--green); }
.efficiency-card > span { color: var(--muted); font: 500 9px/1 var(--mono); letter-spacing: .1em; }
.efficiency-card h3 { max-width: 300px; margin: 46px 0 18px; font: 700 29px/1.08 var(--display); letter-spacing: -.04em; }
.efficiency-card p { max-width: 310px; margin: 0; color: var(--muted); font-size: 15px; line-height: 1.65; }

.proof { color: var(--white); background: var(--ink); }
.proof-grid { display: grid; grid-template-columns: .78fr 1.22fr; gap: 110px; }
.proof-intro p:not(.eyebrow) { max-width: 480px; margin: 30px 0 0; color: rgba(255,255,255,.52); font-size: 17px; line-height: 1.7; }
.proof-list { border-top: 1px solid rgba(255,255,255,.32); }
.proof-list article { display: grid; grid-template-columns: 60px 1fr; gap: 20px; padding: 30px 0; border-bottom: 1px solid var(--line-light); }
.proof-list article > span { color: var(--acid); font: 500 10px/1 var(--mono); }
.proof-list h3 { margin: 0 0 8px; font: 600 20px/1.2 var(--display); }
.proof-list p { max-width: 530px; margin: 0; color: rgba(255,255,255,.5); font-size: 14px; line-height: 1.6; }

.research { background: var(--paper); }
.research-list { border-top: 1px solid var(--ink); }
.research-list article { display: grid; grid-template-columns: 90px 1fr auto; gap: 30px; align-items: center; min-height: 142px; border-bottom: 1px solid var(--line); transition: padding .2s, background .2s; }
.research-list article:hover { padding-inline: 18px; background: rgba(255,255,255,.5); }
.research-number { color: var(--red); font: 500 11px/1 var(--mono); }
.research-list h3 { margin: 0 0 8px; font: 700 26px/1.15 var(--display); letter-spacing: -.03em; }
.research-list p { margin: 0; color: var(--muted); font-size: 15px; }
.research-tag { padding: 6px 8px; border: 1px solid var(--line); color: var(--muted); font: 500 8px/1 var(--mono); letter-spacing: .12em; }

.manifesto { position: relative; overflow: hidden; color: var(--white); background: #171815; }
.manifesto::after { content: "1 + 1 > 2"; position: absolute; right: -30px; bottom: -65px; color: rgba(255,255,255,.025); font: 800 190px/1 var(--display); letter-spacing: -.08em; white-space: nowrap; }
.manifesto-grid { position: relative; z-index: 1; display: grid; grid-template-columns: .35fr .65fr; gap: 90px; }
.manifesto-index { margin: 80px 0 0; color: rgba(255,255,255,.24); font: 500 10px/1.8 var(--mono); letter-spacing: .16em; }
.manifesto-lede { margin: 25px 0 60px; color: var(--acid); font: 500 clamp(24px, 3vw, 38px)/1.25 var(--display); letter-spacing: -.035em; }
.manifesto-lines { max-width: 740px; margin-bottom: 56px; counter-reset: manifesto; }
.manifesto-lines p { position: relative; margin: 0; padding: 20px 0 20px 42px; border-top: 1px solid rgba(255,255,255,.13); color: rgba(255,255,255,.65); font-size: 18px; line-height: 1.55; counter-increment: manifesto; }
.manifesto-lines p::before { content: "0" counter(manifesto); position: absolute; top: 26px; left: 0; color: rgba(255,255,255,.28); font: 500 8px/1 var(--mono); }
.manifesto-lines p:last-child { border-bottom: 1px solid rgba(255,255,255,.13); }
.text-link-light { display: inline-flex; gap: 18px; color: var(--acid); font: 500 10px/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; }

.lineage { background: var(--white); }
.lineage-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.lineage-card { display: flex; min-height: 360px; flex-direction: column; padding: 28px; border-right: 1px solid var(--line); transition: background .2s; }
.lineage-card:last-child { border-right: 0; }
a.lineage-card:hover { background: var(--paper); }
.lineage-meta { color: var(--muted); font: 500 8px/1 var(--mono); letter-spacing: .11em; }
.lineage-card h3 { margin: 90px 0 16px; font: 700 28px/1.1 var(--display); letter-spacing: -.035em; }
.lineage-card p { margin: 0 0 30px; color: var(--muted); font-size: 15px; line-height: 1.65; }
.lineage-link { margin-top: auto; font: 600 10px/1 var(--mono); }
.lineage-link-stars { display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.lineage-stars { display: inline-flex; align-items: center; gap: 6px; min-height: 27px; padding: 0 9px; border: 1px solid var(--line); color: var(--ink); }
.lineage-stars svg { color: var(--green); }
.lineage-card-future { background: var(--acid); }
.lineage-card-future .lineage-meta, .lineage-card-future p { color: rgba(17,17,15,.65); }

.faq { border-top: 1px solid var(--line); background: var(--paper); }
.faq-grid { display: grid; grid-template-columns: .72fr 1.28fr; gap: 100px; }
.faq-intro h2 { margin: 0; font: 700 clamp(40px, 5vw, 70px)/1 var(--display); letter-spacing: -.055em; }
.faq-list { border-top: 1px solid var(--ink); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { position: relative; padding: 27px 50px 27px 0; list-style: none; cursor: pointer; font: 650 20px/1.3 var(--display); letter-spacing: -.025em; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; position: absolute; top: 27px; right: 3px; color: var(--green); font: 500 21px/1 var(--mono); }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { max-width: 720px; margin: -4px 52px 27px 0; color: var(--muted); font-size: 15px; line-height: 1.7; }
.faq-list details a { color: var(--ink); border-bottom: 1px solid currentColor; font-weight: 600; }

.final-cta { padding: 92px 0; border-top: 1px solid var(--line); background: var(--paper); }
.final-cta-inner { display: flex; align-items: flex-end; justify-content: space-between; gap: 50px; }
.final-cta-copy > p:last-child { max-width: 700px; margin: 28px 0 0; color: var(--muted); font-size: 17px; line-height: 1.65; }
.final-cta-actions { display: flex; flex-wrap: wrap; gap: 12px; padding-bottom: 5px; }

.site-footer { padding: 70px 0 26px; color: var(--white); background: var(--ink); }
.footer-grid { display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 70px; }
.footer-wordmark { margin-bottom: 22px; }
.footer-grid > div:first-child > p { max-width: 350px; margin: 0 0 26px; color: rgba(255,255,255,.42); font-size: 14px; line-height: 1.6; }
.footer-yc { color: rgba(255,255,255,.5); }
.footer-column { display: flex; flex-direction: column; gap: 11px; }
.footer-column h3 { margin: 2px 0 12px; color: rgba(255,255,255,.35); font: 500 8px/1 var(--mono); letter-spacing: .13em; text-transform: uppercase; }
.footer-column a { width: fit-content; color: rgba(255,255,255,.65); font-size: 13px; }
.footer-column a:hover { color: var(--acid); }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; gap: 30px; margin-top: 65px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.12); color: rgba(255,255,255,.3); font: 500 8px/1.2 var(--mono); letter-spacing: .08em; }

@keyframes blink { 50% { opacity: .35; } }
@keyframes frequency-breathe { 0%, 100% { transform: scaleY(.985); } 50% { transform: scaleY(1.015); } }
@keyframes prompt-arrive { from { opacity: 0; transform: translateY(9px); } to { opacity: 1; transform: translateY(0); } }
@keyframes prompt-scan { 0% { left: -35%; opacity: 0; } 18% { opacity: 1; } 100% { left: 115%; opacity: 0; } }
@keyframes request-arrive { from { opacity: 0; transform: translateX(-24px); } to { opacity: 1; transform: translateX(0); } }
@keyframes typing-cursor { 0%, 46% { opacity: 1; } 47%, 100% { opacity: 0; } }
@keyframes request-submit { 0% { left: -35%; opacity: 0; } 14% { opacity: 1; } 72% { opacity: 1; } 100% { left: 118%; opacity: 0; } }
@keyframes frequency-spark-sweep { 0% { left: -10%; opacity: 0; } 10% { opacity: .72; } 86% { opacity: .62; } 100% { left: 108%; opacity: 0; } }
@keyframes frequency-charge { 0%, 100% { filter: brightness(1) saturate(1); } 48% { filter: brightness(1.55) saturate(1.24); } }
@keyframes symphony-voice { 0%, 100% { transform: scaleY(.97); opacity: .88; } 50% { transform: scaleY(1.025); opacity: 1; } }

@media (max-width: 1080px) {
  .desktop-nav { display: none; }
  .menu-button { display: block; }
  .hero-grid { grid-template-columns: 1fr; gap: 64px; min-height: auto; padding-top: 100px; padding-bottom: 80px; }
  .hero-copy { max-width: 760px; }
  .orchestration-stage { width: min(100%, 760px); }
  .thesis-grid, .proof-grid { gap: 60px; }
  .split-heading { gap: 60px; }
  .context-card { padding-inline: 20px; }
  .footer-grid { grid-template-columns: 1.6fr repeat(3, 1fr); gap: 38px; }
}

@media (max-width: 980px) {
  .symphony-native__composition { grid-template-columns: minmax(310px,1fr) 54px minmax(310px,1fr); gap: 20px; }
  .symphony-native__voice { grid-template-columns: 62px 1fr; gap: 12px; }
  .symphony-native__frequency { gap: 5px; }
}

@media (max-width: 820px) {
  .section-pad { padding: 92px 0; }
  .split-heading, .thesis-grid, .proof-grid, .manifesto-grid, .faq-grid { grid-template-columns: 1fr; }
  .split-heading { gap: 28px; margin-bottom: 52px; }
  .thesis-grid { gap: 20px; padding-bottom: 70px; }
  .thesis-copy { padding-top: 0; }
  .context-grid, .lineage-grid, .efficiency-grid { grid-template-columns: 1fr; }
  .context-card, .lineage-card { min-height: 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .context-card:last-child, .lineage-card:last-child { border-bottom: 0; }
  .context-visual { height: 210px; }
  .context-card h3 { margin-top: 0; }
  .context-card > p { min-height: 0; }
  .efficiency-card { padding: 24px 0 22px; }
  .efficiency-card h3 { margin-top: 38px; }
  .manifesto-grid { gap: 30px; }
  .faq-grid { gap: 52px; }
  .manifesto-index { display: none; }
  .final-cta-inner { align-items: flex-start; flex-direction: column; }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
  .footer-column:last-child { grid-column: 2 / 3; }
}

@media (max-width: 760px) {
  .symphony-native__header { padding-top: 42px; }
  .symphony-native__composition { grid-template-columns: 1fr; gap: 30px; }
  .symphony-native__operator { grid-template-columns: auto auto; justify-content: center; align-items: center; gap: 12px; }
  .symphony-native__operator > span { font-size: 54px; transform: rotate(90deg); }
  .symphony-native__whole { width: min(100%,500px); justify-self: center; }
  .symphony-native__whole-label, .symphony-native__result { text-align: center; }
  .symphony-native__frequency--whole { justify-content: center; }
}

@media (max-width: 620px) {
  .shell { width: min(calc(100% - 32px), var(--shell)); }
  .site-header { height: 64px; }
  .nav-actions { display: none; }
  .lab-label { display: none; }
  .mobile-nav { top: 64px; }
  .hero { padding-top: 64px; }
  .hero-grid { gap: 48px; padding-top: 70px; }
  .hero h1 { font-size: clamp(42px, 13vw, 59px); }
  .hero-lede { font-size: 16px; }
  .hero-actions .button { width: 100%; }
  .orchestration-stage { min-height: 610px; }
  .prompt-card { margin-inline: 14px; }
  .echo-frequency-panel { margin-inline: 14px; }
  .echo-frequency { height: 210px; gap: 3px; padding-inline: 2px; }
  .intelligence-meter { margin-inline: 14px; }
  .lab-intro { align-items: flex-start; flex-direction: column; justify-content: center; padding: 24px 0; }
  .section-heading h2, .thesis h2, .proof h2, .manifesto h2, .final-cta h2 { font-size: clamp(38px, 12vw, 54px); }
  .research-list article { grid-template-columns: 45px 1fr; gap: 12px; padding: 23px 0; }
  .research-tag { display: none; }
  .research-list h3 { font-size: 21px; }
  .proof-list article { grid-template-columns: 42px 1fr; }
  .manifesto-lede { margin-bottom: 42px; }
  .manifesto-lines p { padding-left: 30px; font-size: 16px; }
  .final-cta-actions, .final-cta-actions .button { width: 100%; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 42px 28px; }
  .footer-grid > div:first-child { grid-column: 1 / -1; }
  .footer-column:last-child { grid-column: auto; }
  .footer-bottom { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 480px) {
  .symphony-native__equation { font-size: clamp(37px,11vw,50px); }
  .symphony-native__quote strong { font-size: 20px; }
  .symphony-native__quote span { font-size: 15px; }
  .symphony-native__voice { grid-template-columns: 54px 1fr; gap: 9px; }
  .symphony-native__label { font-size: 7px; }
  .symphony-native__frequency { gap: 3px; }
  .symphony-native__frequency i { width: 4px; }
  .symphony-native__frequency--whole { gap: 4px; }
  .symphony-native__frequency--whole i { width: 6px; }
  .symphony-native__thesis { font-size: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}