:root {
  color-scheme: dark;
  --ink: #09090b;
  --ink-2: #0f0f13;
  --panel: rgba(24, 24, 30, 0.72);
  --panel-strong: rgba(30, 30, 38, 0.9);
  --bone: #f2f0e8;
  --muted: #a7a6b1;
  --faint: #71717c;
  --line: rgba(242, 240, 232, 0.13);
  --lime: #c8ff4d;
  --violet: #9271ff;
  --coral: #ff6b5e;
  --mono: "DM Mono", monospace;
  --sans: "Manrope", sans-serif;
  --serif: "Newsreader", Georgia, serif;
  --arm-phase: 3;
  --phase: 2;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 76% 6%, rgba(146, 113, 255, 0.13), transparent 28rem),
    radial-gradient(circle at 24% 30%, rgba(200, 255, 77, 0.055), transparent 34rem),
    var(--ink);
  color: var(--bone);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,.024) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.024) 1px, transparent 1px);
  background-size: 76px 76px;
  mask-image: linear-gradient(to bottom, black, transparent 86%);
}

.grain {
  position: fixed;
  inset: -100%;
  z-index: 100;
  pointer-events: none;
  opacity: .035;
  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(%23n)' opacity='.5'/%3E%3C/svg%3E");
  animation: grain 7s steps(9) infinite;
}

@keyframes grain { 0%,100% { transform: translate(0,0); } 20% { transform: translate(3%, -2%); } 50% { transform: translate(-2%, 3%); } 80% { transform: translate(1%, -3%); } }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
.skip-link { position: fixed; left: 1rem; top: -5rem; z-index: 200; padding: .8rem 1rem; border-radius: .6rem; background: var(--bone); color: var(--ink); }
.skip-link:focus { top: 1rem; }

.site-header {
  position: fixed;
  z-index: 90;
  top: 0;
  left: 50%;
  width: min(94%, 1440px);
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 1.15rem 0;
  border-bottom: 1px solid transparent;
  transition: padding .25s ease, background .25s ease, border-color .25s ease, width .25s ease;
}
.site-header.scrolled { width: 100%; padding: .8rem max(3%, calc((100% - 1440px)/2)); background: rgba(9, 9, 11, .83); border-color: var(--line); backdrop-filter: blur(22px) saturate(1.3); }
.brand { display: flex; align-items: center; gap: .75rem; flex: 0 0 auto; }
.brand img { filter: drop-shadow(0 0 18px rgba(200,255,77,.13)); }
.brand-copy { display: flex; flex-direction: column; gap: .18rem; line-height: 1; }
.brand-copy strong { font-size: .9rem; letter-spacing: -.01em; }
.brand-copy small { color: var(--faint); font: 500 .56rem/1 var(--mono); letter-spacing: .13em; text-transform: uppercase; }
nav { display: flex; gap: 1.8rem; color: var(--muted); font-size: .76rem; }
nav a, .nav-cta { transition: color .2s ease; }
nav a:hover, nav a:focus-visible { color: var(--bone); }
.nav-cta { padding: .72rem 1rem; border: 1px solid var(--line); border-radius: 999px; font-size: .73rem; background: rgba(255,255,255,.035); }
.nav-cta:hover { color: var(--lime); border-color: rgba(200,255,77,.35); }

.hero {
  position: relative;
  min-height: 940px;
  display: grid;
  grid-template-columns: minmax(360px, .87fr) minmax(540px, 1.13fr);
  align-items: center;
  gap: 2rem;
  max-width: 1500px;
  margin: 0 auto;
  padding: 9rem 3% 5rem;
}
.hero-copy { position: relative; z-index: 5; padding-left: 1rem; }
.eyebrow { display: flex; align-items: center; gap: .75rem; margin: 0 0 1.5rem; color: var(--lime); font: 500 .68rem/1.3 var(--mono); letter-spacing: .16em; text-transform: uppercase; }
.eyebrow span { width: 30px; height: 1px; background: currentColor; }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 820px; margin-bottom: 1.7rem; font: 400 clamp(4rem, 6.45vw, 7.1rem)/.87 var(--serif); letter-spacing: -.055em; }
h1 em, h2 em { color: var(--lime); font-style: normal; }
.hero-lede { max-width: 620px; color: var(--muted); font-size: clamp(1rem, 1.5vw, 1.2rem); line-height: 1.75; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2.25rem; }
.button { display: inline-flex; align-items: center; justify-content: space-between; gap: 1.8rem; min-height: 54px; padding: 0 1.25rem; border-radius: .75rem; font-weight: 700; font-size: .78rem; transition: transform .2s ease, border-color .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: #121409; background: linear-gradient(135deg, #dcff8a, var(--lime)); box-shadow: 0 16px 50px rgba(200,255,77,.16); }
.button-secondary { border: 1px solid var(--line); background: rgba(255,255,255,.035); }
.button-secondary:hover { border-color: rgba(242,240,232,.3); }
.proof-row { display: flex; flex-wrap: wrap; gap: 1.3rem; margin-top: 2rem; color: var(--faint); font: 500 .65rem/1.4 var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.proof-row span { display: flex; align-items: center; gap: .48rem; }
.dot { width: 6px; height: 6px; border-radius: 50%; box-shadow: 0 0 10px currentColor; }
.lime { color: var(--lime); background: var(--lime); }.violet { color: var(--violet); background: var(--violet); }.coral { color: var(--coral); background: var(--coral); }

.hero-visual { position: relative; min-height: 740px; isolation: isolate; }
.hero-visual::before { content: ""; position: absolute; inset: 8% 3% 2% -18%; z-index: -3; background: radial-gradient(circle, rgba(146,113,255,.18), transparent 52%); filter: blur(30px); }
.hero-art { position: absolute; inset: 0 -10% 0 -12%; z-index: -2; background: linear-gradient(90deg, var(--ink) 0%, transparent 27%, transparent 78%, var(--ink) 100%), linear-gradient(0deg, var(--ink) 0%, transparent 24%, transparent 84%, rgba(9,9,11,.62) 100%), url("biomechanics-hero-v1.webp") center/cover no-repeat; border-radius: 2rem; opacity: .93; }
.hero-art::after { content: ""; position: absolute; inset: 0; border-radius: inherit; background: linear-gradient(118deg, rgba(200,255,77,.06), transparent 30%, rgba(146,113,255,.08) 68%, transparent); mix-blend-mode: screen; }
.orbit { position: absolute; border: 1px solid rgba(200,255,77,.22); border-radius: 50%; transform: rotate(-20deg); box-shadow: inset 0 0 50px rgba(200,255,77,.04); }
.orbit-a { width: 360px; height: 120px; top: 22%; right: 5%; animation: orbit 10s ease-in-out infinite; }
.orbit-b { width: 250px; height: 88px; top: 44%; right: 30%; border-color: rgba(146,113,255,.25); animation: orbit 13s ease-in-out infinite reverse; }
@keyframes orbit { 0%,100% { transform: rotate(-20deg) scale(1); opacity: .55; } 50% { transform: rotate(-17deg) scale(1.05); opacity: 1; } }
.glass { border: 1px solid rgba(242,240,232,.14); background: linear-gradient(145deg, rgba(35,35,43,.82), rgba(14,14,18,.76)); box-shadow: inset 0 1px rgba(255,255,255,.06), 0 30px 90px rgba(0,0,0,.35); backdrop-filter: blur(20px) saturate(1.25); }
.signal-card { position: absolute; right: -1%; bottom: 9%; width: min(560px, 82%); padding: 1.5rem; border-radius: 1.25rem; }
.signal-card-head, .lab-head, .vault-head { display: flex; justify-content: space-between; gap: 1rem; color: var(--muted); font: 500 .63rem/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; }
.signal-card-head b, .lab-head b, .vault-head b { color: var(--lime); font-weight: 500; }
.signal-rail { position: relative; display: grid; grid-template-columns: repeat(6, 1fr); margin: 1.75rem .4rem .8rem; }
.signal-rail::before { content: ""; position: absolute; top: 5px; left: 5px; right: 5px; height: 1px; background: linear-gradient(90deg, var(--lime), var(--violet), rgba(255,255,255,.14)); }
.signal-rail span { position: relative; z-index: 2; justify-self: center; width: 11px; height: 11px; border: 2px solid #62616b; border-radius: 50%; background: #121217; }
.signal-rail span.active { border-color: var(--lime); background: var(--lime); box-shadow: 0 0 14px rgba(200,255,77,.75); }
.signal-card ol { display: grid; grid-template-columns: repeat(6, 1fr); padding: 0; margin: 0; list-style: none; color: var(--faint); font: 500 .52rem/1.3 var(--mono); text-align: center; }
.signal-card p { margin: 1.35rem 0 0; padding-top: 1.1rem; border-top: 1px solid var(--line); color: var(--muted); font-size: .72rem; line-height: 1.6; }
.phase-chip { position: absolute; top: 21%; left: 5%; display: flex; flex-direction: column; gap: .35rem; padding: .9rem 1.1rem; border-radius: .75rem; }
.phase-chip span { color: var(--lime); font: 500 .58rem/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; }.phase-chip strong { font-size: .72rem; }

.section-pad { max-width: 1440px; margin: 0 auto; padding: 8.5rem 4%; }
.statement { border-top: 1px solid var(--line); }
.statement-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 10%; align-items: end; }
.statement h2, .section-heading h2, .shoulder h2, .private h2, .closing h2 { margin-bottom: 0; font: 400 clamp(3.2rem, 5.7vw, 6.2rem)/.94 var(--serif); letter-spacing: -.045em; }
.statement-grid > p, .section-heading > p { color: var(--muted); font-size: 1.05rem; line-height: 1.8; }
.trail { display: grid; grid-template-columns: repeat(5, 1fr); margin-top: 5rem; border: 1px solid var(--line); border-radius: 1.25rem; overflow: hidden; }
.trail-step { position: relative; min-height: 235px; padding: 1.6rem 1.25rem; border-right: 1px solid var(--line); background: rgba(255,255,255,.015); transition: background .25s ease, transform .25s ease; }
.trail-step:last-child { border-right: 0; }.trail-step::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 3px; transform: scaleX(0); transform-origin: left; background: linear-gradient(90deg, var(--lime), var(--violet)); transition: transform .3s ease; }
.trail-step.active { background: linear-gradient(160deg, rgba(200,255,77,.085), rgba(146,113,255,.04)); }.trail-step.active::after { transform: scaleX(1); }
.trail-step span { color: var(--lime); font: .62rem/1 var(--mono); }.trail-step b { display: block; margin-top: 4.5rem; font: 400 1.75rem/1 var(--serif); }.trail-step p { margin: .8rem 0 0; color: var(--faint); font-size: .75rem; line-height: 1.55; }

.explorer { max-width: none; background: linear-gradient(180deg, transparent, rgba(146,113,255,.045), transparent); }
.explorer > * { max-width: 1320px; margin-left: auto; margin-right: auto; }
.section-heading { display: grid; grid-template-columns: 1fr minmax(260px, 410px); gap: 8%; align-items: end; }
.section-heading h2 { font-size: clamp(3rem, 5vw, 5.2rem); }.section-heading .eyebrow { margin-bottom: 1.1rem; }
.explorer-shell { margin-top: 4rem; border-radius: 1.5rem; overflow: hidden; }
.exercise-tabs { display: flex; gap: 0; padding: .7rem; border-bottom: 1px solid var(--line); }
.exercise-tabs button { flex: 1; padding: .9rem; border: 0; border-radius: .65rem; background: transparent; color: var(--faint); cursor: pointer; font: 500 .66rem/1 var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.exercise-tabs button[aria-selected="true"] { color: var(--bone); background: rgba(200,255,77,.08); box-shadow: inset 0 0 0 1px rgba(200,255,77,.16); }
.strategy-canvas { display: grid; grid-template-columns: 1fr 1fr; min-height: 570px; }
.kinetic-figure { display: grid; place-items: center; border-right: 1px solid var(--line); background: radial-gradient(circle, rgba(146,113,255,.09), transparent 58%); }
.kinetic-figure svg { width: min(86%, 480px); overflow: visible; }
.motion-path { stroke: var(--lime); stroke-width: 3; stroke-dasharray: 8 12; filter: url(#glow); animation: dash 8s linear infinite; }.body-line { stroke: rgba(242,240,232,.82); stroke-width: 11; stroke-linecap: round; stroke-linejoin: round; }.joint { fill: var(--ink); stroke: var(--violet); stroke-width: 5; }.j1 { stroke: var(--bone); }.load-line { stroke: var(--coral); stroke-width: 6; stroke-linecap: round; }.phase-arc { stroke: var(--violet); stroke-width: 4; stroke-linecap: round; }
@keyframes dash { to { stroke-dashoffset: -200; } }
.phase-stack { padding: 3rem; }.phase-label { display: flex; justify-content: space-between; color: var(--faint); font: 500 .62rem/1 var(--mono); text-transform: uppercase; letter-spacing: .1em; }.phase-label strong { color: var(--lime); }
input[type="range"] { width: 100%; height: 3px; margin: 2.2rem 0 .8rem; appearance: none; border-radius: 3px; background: linear-gradient(90deg, var(--lime), var(--violet)); }
input[type="range"]::-webkit-slider-thumb { width: 19px; height: 19px; appearance: none; border: 4px solid var(--bone); border-radius: 50%; background: var(--ink); box-shadow: 0 0 0 4px rgba(200,255,77,.15); cursor: grab; }
.phase-ticks { display: flex; justify-content: space-between; color: var(--faint); font: .55rem/1 var(--mono); text-transform: uppercase; }
.strategy-insight { margin-top: 3rem; padding: 1.5rem; border: 1px solid var(--line); border-radius: 1rem; background: rgba(0,0,0,.2); }.strategy-insight h3 { margin: 1rem 0 .65rem; font: 400 1.65rem/1.15 var(--serif); }.strategy-insight p { color: var(--muted); font-size: .78rem; line-height: 1.7; }
.evidence { display: inline-flex; align-items: center; min-height: 24px; padding: 0 .6rem; border: 1px solid; border-radius: 999px; font: 500 .52rem/1 var(--mono); text-transform: uppercase; letter-spacing: .08em; }.observed { color: var(--lime); border-color: rgba(200,255,77,.28); background: rgba(200,255,77,.07); }.calculated { color: #b8a6ff; border-color: rgba(146,113,255,.34); background: rgba(146,113,255,.09); }.estimated { color: #ff988f; border-color: rgba(255,107,94,.32); background: rgba(255,107,94,.08); }.prototype { color: var(--muted); border-color: var(--line); background: rgba(255,255,255,.04); }
.mini-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: .55rem; margin-top: .65rem; }.mini-metrics div { min-height: 88px; padding: .8rem; border: 1px solid var(--line); border-radius: .75rem; }.mini-metrics span { display: block; color: var(--faint); font: .5rem/1.2 var(--mono); text-transform: uppercase; }.mini-metrics b { display: block; margin-top: .8rem; font-size: .65rem; line-height: 1.35; }

.feedback { max-width: none; background: linear-gradient(180deg, transparent, rgba(200,255,77,.025), transparent); }
.feedback > * { max-width: 1320px; margin-left: auto; margin-right: auto; }
.feedback-stage { display: grid; grid-template-columns: 1.08fr .92fr; min-height: 680px; margin-top: 4rem; border-radius: 1.5rem; overflow: hidden; }
.feedback-live { position: relative; padding: 1.5rem; border-right: 1px solid var(--line); background: radial-gradient(circle at 50% 45%, rgba(200,255,77,.085), transparent 55%); }
.live-head { display: flex; justify-content: space-between; color: var(--faint); font: 500 .6rem/1 var(--mono); text-transform: uppercase; letter-spacing: .1em; }.live-head b { color: var(--lime); }
.body-map { position: relative; display: grid; min-height: 600px; place-items: center; }.body-map svg { width: min(88%, 520px); overflow: visible; }
.feedback-body { stroke: rgba(242,240,232,.86); stroke-width: 13; stroke-linecap: round; stroke-linejoin: round; }.feedback-joint { fill: var(--ink); stroke: var(--violet); stroke-width: 5; }.target-muscle { fill: rgba(200,255,77,.27); stroke: var(--lime); stroke-width: 3; filter: drop-shadow(0 0 14px rgba(200,255,77,.28)); }.comp-muscle { fill: rgba(255,107,94,.2); stroke: var(--coral); stroke-width: 3; }.feedback-path { stroke: var(--lime); stroke-width: 3; stroke-dasharray: 7 10; animation: dash 8s linear infinite; }.feedback-load { stroke: var(--coral); stroke-width: 7; stroke-linecap: round; }
.cue-orb { position: absolute; left: 4%; top: 28%; width: 150px; height: 150px; display: flex; flex-direction: column; align-items: center; justify-content: center; border: 1px solid rgba(200,255,77,.35); border-radius: 50%; background: radial-gradient(circle, rgba(200,255,77,.11), rgba(9,9,11,.72)); box-shadow: 0 0 0 16px rgba(200,255,77,.025), 0 0 70px rgba(200,255,77,.11); text-align: center; }.cue-orb span { color: var(--lime); font: .52rem/1 var(--mono); text-transform: uppercase; letter-spacing: .1em; }.cue-orb b { width: 100px; margin-top: .65rem; font-size: .72rem; }.cue-orb i { width: 9px; height: 9px; margin-top: .8rem; border-radius: 50%; background: var(--lime); box-shadow: 0 0 20px var(--lime); animation: cuePulse 1.8s ease-in-out infinite; }
@keyframes cuePulse { 0%,100% { transform: scale(.75); opacity: .55; } 50% { transform: scale(1.15); opacity: 1; } }
.comp-chip { position: absolute; right: 2%; bottom: 15%; display: flex; flex-direction: column; gap: .35rem; padding: .8rem 1rem; border: 1px solid rgba(255,107,94,.3); border-radius: .7rem; background: rgba(9,9,11,.78); backdrop-filter: blur(14px); }.comp-chip span { color: var(--coral); font: .52rem/1 var(--mono); text-transform: uppercase; }.comp-chip b { font-size: .62rem; }
.feedback-console { padding: 2.6rem; }.console-label { color: var(--faint); font: 500 .58rem/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; }.cue-selector { display: grid; grid-template-columns: repeat(3, 1fr); gap: .55rem; margin-top: 1rem; }.cue-selector button { min-height: 78px; padding: .8rem; border: 1px solid var(--line); border-radius: .75rem; background: rgba(255,255,255,.02); color: var(--faint); text-align: left; cursor: pointer; }.cue-selector button.active { border-color: rgba(200,255,77,.32); background: rgba(200,255,77,.07); color: var(--bone); }.cue-selector span { display: block; color: inherit; font: .5rem/1 var(--mono); text-transform: uppercase; }.cue-selector b { display: block; margin-top: .75rem; font-size: .64rem; }
.recruitment-card { margin-top: 2rem; padding: 1.3rem; border: 1px solid var(--line); border-radius: 1rem; background: rgba(0,0,0,.18); }.recruitment-head { display: flex; justify-content: space-between; gap: 1rem; color: var(--faint); font: .51rem/1.3 var(--mono); text-transform: uppercase; }.recruitment-head b { color: #c9bdff; }.muscle-row { display: grid; grid-template-columns: 120px 1fr 60px; align-items: center; gap: .7rem; margin-top: 1.4rem; }.muscle-row span, .muscle-row b { color: var(--muted); font-size: .6rem; }.muscle-row b { color: var(--lime); text-align: right; }.muscle-row i { height: 6px; overflow: hidden; border-radius: 8px; background: rgba(255,255,255,.07); }.muscle-row em { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--lime), #e7ffad); }.muscle-row.attention b { color: var(--coral); }.muscle-row.attention em { background: linear-gradient(90deg, var(--violet), var(--coral)); }.recruitment-card p { margin: 1.5rem 0 0; padding-top: 1rem; border-top: 1px solid var(--line); color: var(--faint); font-size: .63rem; line-height: 1.6; }
.learning-loop { display: grid; grid-template-columns: repeat(4, 1fr); gap: .4rem; margin-top: 1rem; }.learning-loop span { padding: .7rem .4rem; border: 1px solid var(--line); border-radius: .55rem; color: var(--faint); font: .48rem/1.35 var(--mono); text-align: center; text-transform: uppercase; }.learning-loop span.active { color: var(--lime); border-color: rgba(200,255,77,.28); background: rgba(200,255,77,.055); }

.applications { max-width: 1440px; }
.application-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: .8rem; margin-top: 4rem; }
.application-card { position: relative; min-height: 340px; padding: 2rem; overflow: hidden; border: 1px solid var(--line); border-radius: 1.25rem; background: linear-gradient(145deg, rgba(255,255,255,.035), rgba(255,255,255,.012)); }
.application-card::before { content: ""; position: absolute; width: 260px; height: 260px; right: -90px; top: -100px; border: 1px solid rgba(200,255,77,.18); border-radius: 50%; box-shadow: 0 0 70px rgba(200,255,77,.04); }
.application-card.gait::before { border-color: rgba(146,113,255,.22); box-shadow: 0 0 70px rgba(146,113,255,.07); }.application-card.restore::before { border-color: rgba(255,107,94,.2); }.application-card.neuro::before { border-color: rgba(242,240,232,.17); }
.application-card > span { color: var(--lime); font: .56rem/1 var(--mono); text-transform: uppercase; letter-spacing: .08em; }.application-card.gait > span { color: #b9a8ff; }.application-card.restore > span { color: #ff9a91; }.application-card.neuro > span { color: var(--bone); }
.application-card h3 { max-width: 520px; margin: 5.6rem 0 1rem; font: 400 2.25rem/1.03 var(--serif); letter-spacing: -.025em; }.application-card p { max-width: 560px; color: var(--muted); font-size: .78rem; line-height: 1.7; }.application-card > b { position: absolute; left: 2rem; bottom: 1.7rem; color: var(--faint); font: 500 .52rem/1 var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.transfer-rule { display: grid; grid-template-columns: 150px 1fr; gap: 1rem; margin-top: .8rem; padding: 1.25rem 1.5rem; border: 1px solid rgba(146,113,255,.22); border-radius: 1rem; background: rgba(146,113,255,.045); }.transfer-rule span { color: #c9bdff; font: .55rem/1.5 var(--mono); text-transform: uppercase; letter-spacing: .1em; }.transfer-rule p { margin: 0; color: var(--muted); font-size: .7rem; line-height: 1.65; }

.shoulder { display: grid; grid-template-columns: .8fr 1.2fr; gap: 7%; align-items: center; }
.shoulder h2 { font-size: clamp(3.1rem, 5.2vw, 5.6rem); }.shoulder-copy > p:not(.eyebrow) { margin: 1.6rem 0; color: var(--muted); line-height: 1.8; }.shoulder blockquote { margin: 2.2rem 0; padding-left: 1.2rem; border-left: 2px solid var(--lime); font: 400 1.6rem/1.3 var(--serif); }.evidence-note { display: grid; gap: .8rem; }.evidence-note p { color: var(--faint); font-size: .72rem; line-height: 1.6; }
.shoulder-lab { padding: 1.5rem; border-radius: 1.4rem; }.shoulder-viz { position: relative; min-height: 450px; display: grid; place-items: center; margin: 1rem 0; background: radial-gradient(circle, rgba(146,113,255,.12), transparent 56%); overflow: hidden; }.shoulder-viz svg { width: min(90%, 570px); }.thorax { fill: rgba(242,240,232,.035); stroke: rgba(242,240,232,.24); stroke-width: 2; }.clavicle { stroke: var(--bone); stroke-width: 9; stroke-linecap: round; }.scapula { fill: rgba(146,113,255,.2); stroke: var(--violet); stroke-width: 4; transform-origin: 293px 177px; transform: rotate(calc((var(--arm-phase) - 2) * -5deg)); transition: transform .3s ease; }.humerus { stroke: var(--bone); stroke-width: 14; stroke-linecap: round; transform-origin: 316px 165px; transform: rotate(calc((var(--arm-phase) - 3) * 13deg)); transition: transform .3s ease; }.shoulder-joint { fill: var(--ink); stroke: var(--lime); stroke-width: 5; }.elbow-joint { fill: var(--ink); stroke: var(--coral); stroke-width: 4; }.rhythm-arc { stroke: var(--lime); stroke-width: 3; stroke-dasharray: 6 8; }.scap-arc { stroke: var(--violet); stroke-width: 3; stroke-dasharray: 5 7; }
.angle-readout { position: absolute; display: flex; flex-direction: column; gap: .3rem; padding: .7rem .9rem; border: 1px solid var(--line); border-radius: .65rem; background: rgba(9,9,11,.72); backdrop-filter: blur(12px); }.angle-readout span { color: var(--faint); font: .5rem/1 var(--mono); text-transform: uppercase; }.angle-readout b { font-size: .66rem; }.readout-a { top: 12%; right: 7%; }.readout-b { bottom: 13%; left: 7%; }

.evidence-section { max-width: none; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(255,255,255,.012); }.evidence-section > * { max-width: 1320px; margin-left: auto; margin-right: auto; }.evidence-grid { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 4rem; border: 1px solid var(--line); border-radius: 1.25rem; overflow: hidden; }.evidence-grid article { min-height: 300px; padding: 1.6rem; border-right: 1px solid var(--line); }.evidence-grid article:last-child { border-right: 0; }.evidence-grid h3 { margin: 4.5rem 0 1rem; font: 400 1.7rem/1.08 var(--serif); }.evidence-grid p { color: var(--muted); font-size: .75rem; line-height: 1.65; }.evidence-grid small { display: block; margin-top: 1.3rem; padding-top: 1rem; border-top: 1px solid var(--line); color: var(--faint); font: .54rem/1.4 var(--mono); text-transform: uppercase; }

.private-shell { position: relative; display: grid; grid-template-columns: 1fr 1fr; gap: 8%; align-items: center; padding: 4rem; border: 1px solid rgba(146,113,255,.22); border-radius: 2rem; overflow: hidden; background: radial-gradient(circle at 85% 20%, rgba(146,113,255,.14), transparent 42%), linear-gradient(145deg, rgba(22,22,29,.8), rgba(9,9,11,.9)); }.private-shell::before { content: ""; position: absolute; inset: 0; pointer-events: none; background-image: linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px); background-size: 44px 44px; mask-image: linear-gradient(90deg, transparent, black); }.private h2 { position: relative; font-size: clamp(2.9rem, 4.6vw, 4.8rem); }.private-copy > p:not(.eyebrow) { color: var(--muted); line-height: 1.8; }.boundary { margin-top: 2rem; padding: 1.2rem; border-left: 2px solid var(--violet); background: rgba(146,113,255,.055); }.boundary b { color: #c9bdff; font: .58rem/1 var(--mono); text-transform: uppercase; letter-spacing: .1em; }.boundary p { margin: .7rem 0 0; color: var(--muted); font-size: .72rem; line-height: 1.6; }
.private-viz { position: relative; padding: 1.5rem; border-radius: 1.25rem; }.timeline { display: grid; gap: .65rem; margin: 2rem 0; }.timeline-row { display: grid; grid-template-columns: 94px 1fr 1.5fr; align-items: center; gap: 1rem; min-height: 74px; padding: 0 1rem; border: 1px solid var(--line); border-radius: .8rem; background: rgba(0,0,0,.18); }.timeline-row span { color: var(--faint); font: .55rem/1 var(--mono); text-transform: uppercase; }.timeline-row i { position: relative; height: 1px; background: linear-gradient(90deg, var(--lime), var(--violet)); }.timeline-row i::before, .timeline-row i::after { content: ""; position: absolute; top: -4px; width: 9px; height: 9px; border-radius: 50%; background: var(--ink); border: 2px solid var(--lime); }.timeline-row i::before { left: 0; }.timeline-row i::after { right: 0; border-color: var(--violet); }.timeline-row b { font-size: .68rem; }.vault-footer { display: flex; gap: .4rem; align-items: center; }.vault-footer span, .vault-footer b { padding: .5rem .65rem; border: 1px solid var(--line); border-radius: .5rem; color: var(--faint); font: 500 .5rem/1 var(--mono); text-transform: uppercase; }.vault-footer span { color: var(--lime); border-color: rgba(200,255,77,.22); }

.closing { min-height: 720px; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; }.closing img { margin-bottom: 1.7rem; }.closing .eyebrow { color: var(--faint); }.closing h2 { font-size: clamp(4rem, 7vw, 7.5rem); }.closing > p:not(.eyebrow) { max-width: 500px; margin: 2rem auto; color: var(--muted); line-height: 1.7; }
footer { display: flex; align-items: center; justify-content: space-between; gap: 2rem; max-width: 1440px; margin: 0 auto; padding: 2rem 4%; border-top: 1px solid var(--line); color: var(--faint); font: .6rem/1.5 var(--mono); text-transform: uppercase; letter-spacing: .06em; }

section > *, .trail-step, .evidence-grid article { opacity: 1; transform: translateY(0); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.8,.2,1); }
.hero > *, .revealed { opacity: 1 !important; transform: translateY(0) !important; }
.trail-step:nth-child(2), .evidence-grid article:nth-child(2) { transition-delay: .07s; }.trail-step:nth-child(3), .evidence-grid article:nth-child(3) { transition-delay: .14s; }.trail-step:nth-child(4), .evidence-grid article:nth-child(4) { transition-delay: .21s; }.trail-step:nth-child(5) { transition-delay: .28s; }

@media (max-width: 1100px) {
  nav { display: none; }
  .hero { min-height: auto; grid-template-columns: 1fr; padding-top: 9rem; }
  .hero-copy { max-width: 860px; }.hero-visual { min-height: 650px; }.hero-art { inset: 0 -4%; }.trail { grid-template-columns: repeat(2, 1fr); }.trail-step { border-bottom: 1px solid var(--line); }.strategy-canvas, .feedback-stage, .shoulder, .private-shell { grid-template-columns: 1fr; }.kinetic-figure, .feedback-live { border-right: 0; border-bottom: 1px solid var(--line); }.shoulder { gap: 4rem; }.evidence-grid { grid-template-columns: repeat(2, 1fr); }.evidence-grid article:nth-child(2) { border-right: 0; }.evidence-grid article:nth-child(-n+2) { border-bottom: 1px solid var(--line); }.application-card h3 { margin-top: 4.4rem; }
}

@media (max-width: 720px) {
  .site-header { width: 92%; }.site-header.scrolled { padding-left: 4%; padding-right: 4%; }.brand-copy small, .nav-cta { display: none; }
  .hero { padding: 8rem 5% 3rem; }.hero-copy { padding-left: 0; }h1 { font-size: clamp(3.7rem, 17vw, 5.4rem); }.hero-visual { min-height: 520px; }.hero-art { inset: 0 -20%; }.signal-card { width: 94%; right: 0; }.phase-chip { left: 0; }
  .section-pad { padding: 6rem 5%; }.statement-grid, .section-heading { grid-template-columns: 1fr; gap: 2rem; }.statement h2, .section-heading h2, .shoulder h2, .private h2 { font-size: 3.2rem; }.trail { grid-template-columns: 1fr; }.trail-step { min-height: 170px; border-right: 0; }.trail-step b { margin-top: 2.8rem; }
  .strategy-canvas { min-height: 0; }.kinetic-figure { min-height: 440px; }.phase-stack { padding: 1.4rem; }.mini-metrics { grid-template-columns: 1fr; }.exercise-tabs { overflow-x: auto; }.exercise-tabs button { min-width: 130px; }
  .feedback-console { padding: 1.3rem; }.body-map { min-height: 500px; }.cue-selector { grid-template-columns: 1fr; }.cue-selector button { min-height: 62px; }.muscle-row { grid-template-columns: 92px 1fr; }.muscle-row b { grid-column: 2; }.learning-loop { grid-template-columns: repeat(2, 1fr); }.cue-orb { width: 125px; height: 125px; }.comp-chip { right: 0; }
  .application-grid { grid-template-columns: 1fr; }.application-card { min-height: 320px; padding: 1.4rem; }.application-card > b { left: 1.4rem; }.transfer-rule { grid-template-columns: 1fr; }
  .shoulder-viz { min-height: 370px; }.evidence-grid { grid-template-columns: 1fr; }.evidence-grid article { min-height: 245px; border-right: 0; border-bottom: 1px solid var(--line); }.evidence-grid article:last-child { border-bottom: 0; }.evidence-grid h3 { margin-top: 3rem; }
  .private-shell { padding: 2rem 1.2rem; }.timeline-row { grid-template-columns: 72px 1fr; }.timeline-row b { grid-column: 1/-1; padding-bottom: .7rem; }.vault-footer { flex-wrap: wrap; }.closing { min-height: 600px; }.closing h2 { font-size: 4rem; }footer { flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }*, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  section > *, .trail-step, .evidence-grid article { opacity: 1; transform: none; }
}

@media (forced-colors: active) {
  .glass, .trail, .trail-step, .evidence-grid, .evidence-grid article, .private-shell { border: 1px solid CanvasText; }
  .button-primary { color: ButtonText; background: ButtonFace; border: 1px solid ButtonText; }
}