@font-face{font-family:'Archivo';font-style:normal;font-display:swap;font-weight:400;src:url(/fonts/archivo-latin-ext-400-normal.woff2) format('woff2');unicode-range:U+0100-02AF,U+0304,U+0308,U+0329,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'Archivo';font-style:normal;font-display:swap;font-weight:400;src:url(/fonts/archivo-latin-400-normal.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'Archivo';font-style:normal;font-display:swap;font-weight:500;src:url(/fonts/archivo-latin-ext-500-normal.woff2) format('woff2');unicode-range:U+0100-02AF,U+0304,U+0308,U+0329,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'Archivo';font-style:normal;font-display:swap;font-weight:500;src:url(/fonts/archivo-latin-500-normal.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'Archivo';font-style:normal;font-display:swap;font-weight:600;src:url(/fonts/archivo-latin-ext-600-normal.woff2) format('woff2');unicode-range:U+0100-02AF,U+0304,U+0308,U+0329,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'Archivo';font-style:normal;font-display:swap;font-weight:600;src:url(/fonts/archivo-latin-600-normal.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'Archivo';font-style:normal;font-display:swap;font-weight:700;src:url(/fonts/archivo-latin-ext-700-normal.woff2) format('woff2');unicode-range:U+0100-02AF,U+0304,U+0308,U+0329,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'Archivo';font-style:normal;font-display:swap;font-weight:700;src:url(/fonts/archivo-latin-700-normal.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'Archivo';font-style:normal;font-display:swap;font-weight:800;src:url(/fonts/archivo-latin-ext-800-normal.woff2) format('woff2');unicode-range:U+0100-02AF,U+0304,U+0308,U+0329,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'Archivo';font-style:normal;font-display:swap;font-weight:800;src:url(/fonts/archivo-latin-800-normal.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-display:swap;font-weight:400;src:url(/fonts/ibm-plex-mono-latin-ext-400-normal.woff2) format('woff2');unicode-range:U+0100-02AF,U+0304,U+0308,U+0329,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-display:swap;font-weight:400;src:url(/fonts/ibm-plex-mono-latin-400-normal.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-display:swap;font-weight:500;src:url(/fonts/ibm-plex-mono-latin-ext-500-normal.woff2) format('woff2');unicode-range:U+0100-02AF,U+0304,U+0308,U+0329,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-display:swap;font-weight:500;src:url(/fonts/ibm-plex-mono-latin-500-normal.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}

/* Layout: a documentation-grade product page. Statement beats (one line, one render) alternate with evidence beats (tables, charts, specs).
   Two pinned chapters scrub Blender-rendered frame sequences on <canvas>; Three.js drives the live breath around the hero render. Dark single look. */
:root{
  --night:#171C20; --panel:#1D2328; --raised:#232A30; --ink:#F3F1E9; --soft:#CDD1D2; --muted:#9AA3A8; --line:#2A3238; --line2:#3A444C;
  --o2:#3CC4D5; --accent:#F25C3A; --flare:#F25C3A; --vt:#E2B84A;
  --display:"Archivo","Helvetica Neue",Arial,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,Menlo,Consolas,monospace;
  --gl:max(24px,env(safe-area-inset-left,0px)); --gr:max(24px,env(safe-area-inset-right,0px));
  --navh:60px;
  color-scheme:dark;
}
@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}
html{scroll-padding-top:calc(var(--navh) + 12px)}
body{background:var(--night);color:var(--ink);font:400 17px/1.6 var(--display);-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
.wrap{max-width:1280px;margin:0 auto;padding-left:var(--gl);padding-right:var(--gr)}
sub{font-size:.62em;line-height:0}
sup a{font:500 .62em/0 var(--mono);color:var(--accent);text-decoration:none;margin-left:1px}
h1,h2,h3{margin:0;font-family:var(--display);text-wrap:balance}
p{margin:0}
.kicker{font:500 12px/1.2 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin:0}
.kicker b{color:var(--muted);font-weight:500;margin-right:10px}
h1{font-weight:800;font-size:clamp(52px,7.6vw,112px);line-height:.93;letter-spacing:-.04em}
h2{font-weight:800;font-size:clamp(34px,4.4vw,60px);line-height:1.02;letter-spacing:-.03em}
h3{font-weight:600;font-size:19px;line-height:1.3;letter-spacing:-.01em}
.lede{font-size:clamp(18px,1.45vw,21px);line-height:1.55;color:var(--soft);max-width:34ch}
.body{color:var(--soft);max-width:60ch}
.note{font:400 12px/1.55 var(--mono);color:var(--muted)}
.btn{display:inline-flex;align-items:center;gap:8px;font:600 15px/1 var(--display);text-decoration:none;border-radius:999px;padding:13px 20px;border:1.5px solid transparent;cursor:pointer;white-space:nowrap;background:none;color:var(--ink)}
.btn.primary{background:var(--flare);color:#171C20}
.btn.primary:hover{background:#F47556}
.btn.ghost{border-color:var(--line2)}
.btn.ghost:hover{border-color:var(--accent)}
.chip{display:inline-flex;align-items:center;gap:8px;font:500 11px/1 var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--soft);border:1px solid var(--line2);border-radius:999px;padding:7px 11px}
.chip i{width:7px;height:7px;border-radius:50%;background:var(--accent)}
.tag{font:500 10px/1 var(--mono);letter-spacing:.1em;color:var(--flare);border:1px solid rgba(242,92,58,.45);border-radius:4px;padding:3px 5px;vertical-align:2px;margin-left:6px;white-space:nowrap}

/* nav */
.nav{position:sticky;top:0;z-index:20;height:calc(var(--navh) + env(safe-area-inset-top,0px));padding-top:env(safe-area-inset-top,0px);background:rgba(23,28,32,.78);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid rgba(60,196,213,.14)}
.nav .wrap{display:flex;align-items:center;gap:28px;height:var(--navh)}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:none}
.brand .m{height:20px;width:auto}.brand .w{height:19px;width:auto}
.links{display:flex;gap:22px;margin:0 0 0 auto;padding:0;list-style:none}
.links a{text-decoration:none;font:500 14px/1 var(--display);color:var(--muted);padding:6px 0;border-bottom:1.5px solid transparent}
.links a:hover,.links a[aria-current="true"]{color:var(--ink);border-bottom-color:var(--accent)}
.nav .btn{padding:9px 15px;font-size:14px}
@media (max-width:1020px){.links{display:none}.nav .btn{margin-left:auto}}

/* hero */
.hero{position:relative;min-height:min(92vh,980px);display:flex;align-items:center;overflow:hidden}
.hero-media{position:absolute;inset:0;z-index:0}
.hero-media img{width:100%;height:100%;object-fit:cover;object-position:62% 28%;display:block}
#breath{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.hero::after{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;background:linear-gradient(90deg,rgba(23,28,32,.96) 0%,rgba(23,28,32,.85) 28%,rgba(23,28,32,.2) 50%,rgba(23,28,32,0) 60%)}
.hero .wrap{position:relative;z-index:2;width:100%;padding-block:96px}
.hero-copy{max-width:36rem;display:flex;flex-direction:column;gap:24px}
.cta{display:flex;flex-wrap:wrap;gap:12px}
.facts{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--line);margin:6px 0 0;max-width:36rem}
.facts div{padding:14px 12px 0 0}
.facts dt{font:500 15px/1.2 var(--mono)}
.facts dd{margin:4px 0 0;font-size:13px;line-height:1.4;color:var(--muted)}

/* generic sections */
.sec{padding-block:clamp(88px,12vh,150px);position:relative}
.sec-head{display:flex;flex-direction:column;gap:16px;max-width:46rem;margin-bottom:40px}
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:clamp(32px,5vw,80px);align-items:start}
.split.wl{grid-template-columns:minmax(0,1.5fr) minmax(0,1fr)}

/* table */
.tbl{overflow-x:auto;border:1px solid var(--line);border-radius:14px;background:var(--panel)}
table{border-collapse:collapse;width:100%;min-width:560px;font-size:15px}
th,td{text-align:left;padding:13px 16px;border-bottom:1px solid var(--line);vertical-align:top}
tr:last-child th,tr:last-child td{border-bottom:0}
thead th{font:500 11px/1.3 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
tbody th{font-weight:500;color:var(--soft)}
td{color:var(--muted)}
.us{color:var(--ink);background:rgba(242,92,58,.05)}
thead .us{color:#F47556}

/* pinned sequences */
.seq{position:relative}
.stage{position:sticky;top:var(--navh);height:calc(100vh - var(--navh));display:grid;grid-template-columns:minmax(300px,34%) 1fr;overflow:hidden}
.stage-copy{display:flex;flex-direction:column;justify-content:center;gap:22px;padding-left:max(var(--gl),calc((100vw - 1280px)/2 + 24px));padding-right:24px;padding-block:40px;position:relative;z-index:2;min-width:0}
.stage-view{position:relative;min-width:0}
.stage-view canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.beats{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;border-top:1px solid var(--line)}
.beats li{display:grid;grid-template-columns:34px 1fr;gap:10px;padding:13px 0;border-bottom:1px solid var(--line);opacity:.6;transition:opacity .35s ease}
.beats li.on{opacity:1}
.beats .n{font:500 12px/1 var(--mono);color:var(--muted);padding-top:4px}
.beats li.on .n{color:var(--accent)}
.beats b{font-weight:600;display:block}
.beats p{color:var(--muted);font-size:15px;line-height:1.5;display:none}
.beats li.on p{display:block}
.beats li{padding:10px 0}
.prog{height:2px;background:var(--line);border-radius:2px;overflow:hidden}
.prog i{display:block;height:100%;width:0;background:var(--accent)}
.lab{position:absolute;left:0;top:0;transform:translate(-50%,-100%);display:flex;flex-direction:column;align-items:center;pointer-events:none;opacity:0;will-change:transform}
.lab span{font:500 11px/1.25 var(--mono);color:var(--ink);background:rgba(23,28,32,.85);border:1px solid var(--line2);border-radius:6px;padding:5px 7px;white-space:nowrap;letter-spacing:.02em}
.lab span em{font-style:normal;color:var(--accent);margin-right:6px}
.lab i{width:1px;background:rgba(238,242,238,.5)}
.lab b{width:6px;height:6px;border-radius:50%;background:var(--ink);margin-top:-1px}

/* how it works */
.hud{border:1px solid var(--line);border-radius:14px;background:var(--panel);padding:18px 20px;display:flex;flex-direction:column;gap:14px}
.hud-top{display:flex;justify-content:space-between;align-items:baseline;gap:12px;flex-wrap:wrap}
.hud-top span{font:500 11px/1 var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.live{color:var(--flare)!important}
.live::before{content:"";display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--flare);margin-right:7px;vertical-align:1px}
@media (prefers-reduced-motion:no-preference){.live::before{animation:blink 1.6s ease-in-out infinite}}
@keyframes blink{50%{opacity:.25}}
.readouts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.ro .k{font:500 11px/1 var(--mono);color:var(--muted);display:flex;align-items:center;gap:6px}
.ro .k i{width:8px;height:8px;border-radius:50%;display:inline-block}
.ro .v{font:500 34px/1.1 var(--mono);font-variant-numeric:tabular-nums;margin-top:8px}
.ro .u{font:400 12px/1.3 var(--mono);color:var(--muted)}
#spark{width:100%;height:70px;display:block}
.steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;counter-reset:s}
.steps li{border:1px solid var(--line);border-radius:12px;padding:16px;background:var(--panel)}
.steps li::before{counter-increment:s;content:"0" counter(s);display:block;font:500 12px/1 var(--mono);color:var(--accent);margin-bottom:10px}
.steps b{font-weight:600}
.steps p{color:var(--muted);font-size:15px;line-height:1.5;margin-top:4px}

/* chart */
.chart{border:1px solid var(--line);border-radius:16px;background:var(--panel);padding:16px 12px 10px;position:relative}
.chart svg{display:block;width:100%;height:auto;overflow:visible}
.chart .grid line{stroke:var(--line);stroke-width:1}
.chart .ax text{fill:var(--muted);font:400 11px var(--mono)}
.chart .curve{fill:none;stroke-width:3.2;stroke-linecap:round;stroke-linejoin:round}
.chart .vt line{stroke:var(--vt);stroke-width:1.5;stroke-dasharray:5 5}
.chart .vt rect{fill:var(--vt)}
.chart .vt text{fill:#1D2328;font:600 11px var(--mono)}
.chart .lbl{font:500 12px var(--mono)}
.chart .xh line{stroke:rgba(238,242,238,.45);stroke-width:1}
.chart .xh circle{stroke:var(--night);stroke-width:2}
.readline{display:flex;flex-wrap:wrap;gap:6px 18px;font:500 12px/1.4 var(--mono);color:var(--muted);padding:8px 8px 2px;font-variant-numeric:tabular-nums}
.readline b{color:var(--ink);font-weight:500}
.vtc{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.vtc div{border:1px solid var(--line);border-radius:12px;padding:16px;background:var(--panel)}
.vtc .t{display:inline-block;font:600 12px/1 var(--mono);color:var(--night);background:var(--vt);border-radius:5px;padding:5px 7px;margin-bottom:10px}
.vtc p{font-size:15px;color:var(--soft);line-height:1.5}
.zones{display:flex;gap:4px}
.zones div{min-width:0}
.zones .bar{height:8px;border-radius:4px}
.zones b{display:block;font:600 13px/1.3 var(--display);margin-top:8px}
.zones span{display:block;font:400 12px/1.4 var(--mono);color:var(--muted)}

/* metrics + specs */
.grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.card{border:1px solid var(--line);border-radius:14px;padding:20px;background:var(--panel);display:flex;flex-direction:column;gap:8px;min-width:0}
.card .metric{font:500 12px/1.2 var(--mono);color:var(--muted)}
.card .dot{width:9px;height:9px;border-radius:50%;display:inline-block;margin-right:8px;vertical-align:0}
.card p{color:var(--muted);font-size:15px;line-height:1.5}
.specs{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0 28px;margin-top:56px}
.spec-group h3{font:500 12px/1 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--accent);padding-bottom:12px}
.spec-group dl{margin:0}
.spec-group div{border-top:1px solid var(--line);padding:13px 0}
.spec-group dt{font:500 11px/1.3 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.spec-group dd{margin:5px 0 0;font-size:15px;line-height:1.45;color:var(--ink)}

/* validation */
.plan{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.plan div{display:grid;grid-template-columns:150px 1fr 110px;gap:16px;padding:14px 0;border-bottom:1px solid var(--line);align-items:baseline}
.plan dt{font:500 11px/1.3 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.plan dd{margin:0;color:var(--soft);font-size:15px;line-height:1.5}
.st{font:500 10px/1 var(--mono);letter-spacing:.1em;text-transform:uppercase;border-radius:999px;padding:5px 8px;border:1px solid var(--line2);color:var(--muted);justify-self:start;white-space:nowrap}
.st.now{border-color:rgba(242,92,58,.6);color:var(--accent)}
.road{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr))}
.road li{position:relative;padding:22px 18px 0 0;border-top:2px solid var(--line);display:flex;flex-direction:column;gap:6px;min-width:0}
.road li.now{border-top-color:var(--accent)}
.road li::before{content:"";position:absolute;top:-7px;left:0;width:12px;height:12px;border-radius:50%;background:var(--line2)}
.road li.now::before{background:var(--accent);box-shadow:0 0 0 5px rgba(242,92,58,.18)}
.road .when{font:500 11px/1 var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.road li.now .when{color:var(--accent)}
.road p{color:var(--muted);font-size:14px;line-height:1.5}
.cant{border:1px solid rgba(242,92,58,.35);border-radius:16px;padding:22px 24px;background:linear-gradient(180deg,rgba(242,92,58,.06),rgba(242,92,58,0));display:flex;flex-direction:column;gap:12px}
.cant h3{color:var(--flare);font:500 12px/1 var(--mono);letter-spacing:.14em;text-transform:uppercase}
.cant ul{margin:0;padding-left:18px;display:flex;flex-direction:column;gap:8px;color:var(--soft);font-size:15px;line-height:1.5}

/* film, faq, pilot, footer */
.film{position:relative;width:100%;max-width:100%;aspect-ratio:16/9;border-radius:16px;overflow:hidden;background:#000;border:1px solid var(--line)}
.film video{width:100%;height:100%;display:block;object-fit:cover}
.faq{display:flex;flex-direction:column;border-top:1px solid var(--line);max-width:60rem}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px;padding:18px 0;font:600 18px/1.35 var(--display)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font:400 22px/1 var(--mono);color:var(--accent);flex:none}
.faq details[open] summary::after{content:"–"}
.faq p{padding:0 0 18px;color:var(--soft);max-width:66ch}
.pilot{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:clamp(28px,5vw,72px);align-items:center;border:1px solid var(--line);border-radius:22px;background:var(--panel);overflow:hidden}
.pilot .pc{padding:clamp(24px,4vw,56px);display:flex;flex-direction:column;gap:20px}
.pilot img{width:100%;height:100%;object-fit:cover;display:block;min-height:280px}
.seg{display:flex;flex-wrap:wrap;gap:8px}
.seg button{font:500 13px/1 var(--mono);color:var(--soft);background:none;border:1px solid var(--line2);border-radius:999px;padding:10px 14px;cursor:pointer}
.seg button[aria-pressed="true"]{border-color:var(--accent);color:var(--ink);background:rgba(242,92,58,.1)}
footer{border-top:1px solid var(--line);padding-block:64px calc(40px + env(safe-area-inset-bottom,0px))}
.foot{display:grid;grid-template-columns:1fr 1.6fr;gap:48px}
.foot .lock{display:flex;align-items:center;gap:12px}
.foot .lock .m{height:36px;width:auto}.foot .lock .w{height:32px;width:auto}
.fns{margin:0;padding-left:18px;display:flex;flex-direction:column;gap:10px;font:400 12px/1.6 var(--mono);color:var(--muted)}
.fns li:target{color:var(--ink);background:rgba(242,92,58,.08)}
.legal{margin-top:36px;font:400 12px/1.6 var(--mono);color:#8B959B}

/* app screens */
.app-row{display:flex;gap:28px;justify-content:center;align-items:flex-start;margin-top:8px}
.phone{flex:0 0 auto;width:300px;aspect-ratio:300/640;border-radius:46px;background:#0E1215;padding:10px;box-shadow:0 0 0 1.5px #343E45,0 30px 80px -30px rgba(0,0,0,.9),0 0 60px -20px rgba(60,196,213,.18);position:relative}
.phone:nth-child(2){margin-top:48px}
.scr{position:relative;width:100%;height:100%;border-radius:37px;overflow:hidden;background:#171C20;display:flex;flex-direction:column;font-family:var(--display);color:var(--ink)}
.island{position:absolute;top:9px;left:50%;transform:translateX(-50%);width:86px;height:25px;border-radius:14px;background:#000;z-index:3}
.sbar{display:flex;justify-content:space-between;align-items:center;padding:13px 22px 0 26px;height:40px;font:600 13px/1 var(--display);flex:none}
.sbar svg{height:11px;width:auto;margin-left:4px}
.ahead{padding:8px 16px 6px;display:flex;justify-content:space-between;align-items:flex-start;flex:none}
.ahead h4{margin:0;font:700 19px/1.15 var(--display);letter-spacing:-.01em}
.ahead p{font:500 11px/1.3 var(--mono);color:var(--muted);margin-top:3px}
.rec{font:500 11px/1 var(--mono);color:var(--flare);display:flex;align-items:center;gap:5px;padding-top:4px;font-variant-numeric:tabular-nums}
.rec::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--flare)}
.chips{display:flex;gap:6px;padding:4px 16px 8px;flex:none;flex-wrap:wrap}
.chips span{font:500 10px/1 var(--mono);color:var(--soft);background:#1D2328;border:1px solid #2E383F;border-radius:999px;padding:5px 8px;display:inline-flex;align-items:center;gap:5px}
.chips span i{width:6px;height:6px;border-radius:50%;background:var(--o2)}
.abody{flex:1;overflow:hidden;padding:0 12px;display:flex;flex-direction:column;gap:8px}
.acard{background:#1D2328;border:1px solid #2A3238;border-radius:16px;padding:12px}
.alab{font:500 10px/1 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.big{font:500 44px/1 var(--mono);letter-spacing:-.03em;font-variant-numeric:tabular-nums;margin-top:6px}
.big small{font:500 13px/1 var(--mono);color:var(--muted);letter-spacing:0;margin-left:4px}
.sub2{font:500 11px/1.3 var(--mono);color:var(--muted);margin-top:4px}
.g2{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.mini .v{font:500 22px/1.1 var(--mono);font-variant-numeric:tabular-nums;margin-top:5px}
.mini .v small{font-size:11px;color:var(--muted);margin-left:3px}
.zonebar{display:flex;align-items:center;gap:8px;font:600 12px/1 var(--display);margin-top:8px}
.zonebar i{flex:1;height:6px;border-radius:3px;background:linear-gradient(90deg,var(--o2) 0 36%,var(--vt) 36% 70%,var(--flare) 70%);position:relative}
.zonebar i b{position:absolute;top:-4px;width:3px;height:14px;border-radius:2px;background:var(--ink);left:52%}
.abtn{margin:8px 12px 0;border-radius:14px;padding:13px;text-align:center;font:600 14px/1 var(--display);flex:none}
.abtn.stop{background:#3A2019;color:var(--flare);border:1px solid rgba(242,92,58,.4)}
.abtn.go{background:var(--accent);color:#171C20}
.tabbar{display:flex;justify-content:space-around;padding:10px 10px 18px;margin-top:8px;border-top:1px solid #262E34;flex:none}
.tabbar span{font:500 9.5px/1 var(--mono);color:var(--muted);display:flex;flex-direction:column;align-items:center;gap:5px}
.tabbar span.on{color:var(--accent)}
.tabbar svg{width:20px;height:20px}
.delta{font:500 11px/1 var(--mono);color:var(--o2)}
.vtrow{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.vtrow .t{display:inline-block;font:600 10px/1 var(--mono);color:#171C20;background:var(--vt);border-radius:4px;padding:4px 5px}
.zlist{display:flex;flex-direction:column;gap:7px}
.zrow{display:grid;grid-template-columns:8px 1fr auto;gap:10px;align-items:center;background:#1D2328;border:1px solid #2A3238;border-radius:12px;padding:10px 12px}
.zrow i{width:8px;height:28px;border-radius:4px}
.zrow b{font:600 13px/1.2 var(--display);display:block}
.zrow span{font:500 10.5px/1.3 var(--mono);color:var(--muted)}
.zrow em{font:500 12px/1.2 var(--mono);font-style:normal;text-align:right;font-variant-numeric:tabular-nums}
.segc{display:flex;background:#1D2328;border:1px solid #2A3238;border-radius:10px;padding:3px;margin:0 12px 8px;flex:none}
.segc span{flex:1;text-align:center;font:600 12px/1 var(--display);padding:8px 0;border-radius:8px;color:var(--muted)}
.segc span.on{background:#2E383F;color:var(--ink)}
.flow4{list-style:none;margin:56px auto 0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;max-width:1100px;counter-reset:f}
.flow4 li{border-top:2px solid var(--line2);padding:16px 12px 0 0;display:flex;flex-direction:column;gap:6px}
.flow4 li::before{counter-increment:f;content:"Step " counter(f);font:500 11px/1 var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--accent)}
.flow4 p{color:var(--muted);font-size:15px;line-height:1.5}
.flow4 .dur{font:500 12px/1 var(--mono);color:var(--soft)}
@media (max-width:1020px){.app-row{justify-content:flex-start;overflow-x:auto;scroll-snap-type:x mandatory;padding:8px 4px 24px;margin-inline:calc(-1*var(--gl));padding-left:var(--gl);padding-right:var(--gr)}.phone{scroll-snap-align:center}.phone:nth-child(2){margin-top:0}}
@media (max-width:900px){.flow4{grid-template-columns:1fr 1fr;row-gap:24px}}
@media (max-width:540px){.flow4{grid-template-columns:1fr}.phone{width:272px}}

.methods{margin-top:28px;border:1px solid var(--line);border-radius:14px;background:var(--panel)}
.methods summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px;padding:16px 20px;font:600 16px/1.35 var(--display)}
.methods summary::-webkit-details-marker{display:none}
.methods summary span{font:500 11px/1.3 var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--accent);display:block;margin-bottom:4px}
.methods summary::after{content:"+";font:400 22px/1 var(--mono);color:var(--accent);flex:none}
.methods[open] summary::after{content:"–"}
.methods dl{margin:0;padding:0 20px 18px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 28px}
.methods dl div{border-top:1px solid var(--line);padding:12px 0}
.methods dt{font:500 11px/1.3 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.methods dd{margin:5px 0 0;color:var(--soft);font-size:15px;line-height:1.5}
@media (max-width:900px){.methods dl{grid-template-columns:1fr}}

/* responsive */
@media (max-width:900px){
  body{font-size:16px}
  .hero{min-height:auto;display:block}
  .hero-media{position:relative;inset:auto;aspect-ratio:16/11;max-width:100%}
  .hero-media img{object-position:66% 50%}
  .hero::after{background:linear-gradient(180deg,rgba(23,28,32,0) 0%,rgba(23,28,32,0) 32%,rgba(23,28,32,1) 64%)}
  .hero .wrap{padding-block:0 64px;margin-top:-20px}
  .hero-media{aspect-ratio:16/12}
  .facts{grid-template-columns:repeat(2,minmax(0,1fr))}
  .split,.split.wl{grid-template-columns:1fr}
  .stage{grid-template-columns:1fr;grid-template-rows:minmax(0,1fr) auto}
  .stage-view{grid-row:1}
  .stage-copy{grid-row:2;padding:14px var(--gr) 22px var(--gl);gap:12px;justify-content:flex-start;background:linear-gradient(180deg,rgba(23,28,32,.0),var(--night) 18%)}
  .stage-copy .body,.stage-copy h2+p{display:none}
  .stage-copy h2{font-size:28px}
  .beats li{display:none;opacity:1;border-bottom:0;padding:6px 0}
  .beats li.on{display:grid}
  .lab span{font-size:10px;padding:4px 6px}
  .lab span .t{display:none}
  .steps{grid-template-columns:1fr}
  .grid3{grid-template-columns:1fr}
  .specs{grid-template-columns:1fr 1fr;gap:0 18px}
  .plan div{grid-template-columns:1fr;gap:6px}
  .road{grid-template-columns:1fr 1fr;row-gap:28px}
  .pilot{grid-template-columns:1fr}
  .foot{grid-template-columns:1fr}
}
@media (max-width:540px){.specs{grid-template-columns:1fr}.road{grid-template-columns:1fr}.vtc{grid-template-columns:1fr}.ro .v{font-size:26px}}

*,*::before,*::after{box-sizing:border-box}
html,body{margin:0}
figure{margin:0}

/* ---------- multi-page additions ---------- */
.links a[aria-current="page"]{color:var(--ink);border-bottom-color:var(--accent)}
.menu-btn{display:none;background:none;border:1px solid var(--line2);border-radius:999px;color:var(--ink);font:500 13px/1 var(--mono);padding:9px 13px;cursor:pointer;letter-spacing:.06em}
.menu{display:none}
@media (max-width:1020px){
  .menu-btn{display:inline-flex;margin-left:auto}
  .nav .btn.primary{margin-left:0}
  .nav.open .menu{display:flex;flex-direction:column;position:absolute;left:0;right:0;top:100%;background:rgba(23,28,32,.97);border-bottom:1px solid var(--line);padding:8px var(--gr) 20px var(--gl)}
  .menu a{text-decoration:none;font:600 20px/1 var(--display);padding:16px 0;border-bottom:1px solid var(--line);color:var(--soft)}
  .menu a[aria-current="page"]{color:var(--accent)}
}
@media (max-width:420px){.nav .btn.primary{display:none}}

.phead{padding-block:clamp(72px,11vh,132px) clamp(40px,6vh,72px);position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.phead .wrap{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(28px,5vw,72px);align-items:center}
.phead.solo .wrap{grid-template-columns:minmax(0,1fr)}
.phead-copy{display:flex;flex-direction:column;gap:22px;max-width:40rem}
.phead h1{font-size:clamp(46px,6.2vw,92px)}
.phead img{width:100%;height:auto;display:block;-webkit-mask-image:linear-gradient(90deg,transparent,#000 14%,#000 92%,transparent);mask-image:linear-gradient(90deg,transparent,#000 14%,#000 92%,transparent)}
.crumb{font:500 12px/1 var(--mono);color:var(--muted);text-decoration:none;letter-spacing:.08em}
.crumb:hover{color:var(--accent)}
@media (max-width:900px){.phead .wrap{grid-template-columns:1fr}}

.explore{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.explore a{text-decoration:none;border:1px solid var(--line);border-radius:16px;background:var(--panel);padding:22px;display:flex;flex-direction:column;gap:10px;min-height:200px;transition:border-color .2s ease,transform .2s ease}
.explore a:hover{border-color:var(--accent);transform:translateY(-2px)}
.explore .k{font:500 11px/1 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--accent)}
.explore h3{font-size:24px;font-weight:700;letter-spacing:-.02em}
.explore p{color:var(--muted);font-size:15px;line-height:1.5}
.explore .go{margin-top:auto;font:500 13px/1 var(--mono);color:var(--ink)}
@media (max-width:900px){.explore{grid-template-columns:1fr}.explore a{min-height:0}}

.band{border:1px solid var(--line);border-radius:22px;background:linear-gradient(120deg,rgba(60,196,213,.10),rgba(242,92,58,.06) 70%,rgba(23,28,32,0));padding:clamp(28px,5vw,64px);display:flex;justify-content:space-between;align-items:center;gap:28px;flex-wrap:wrap}
.band h2{max-width:20ch}
.band .cta{flex:0 1 auto}

.prose{max-width:46rem;display:flex;flex-direction:column;gap:16px;color:var(--soft)}
.prose h2{font-size:clamp(24px,2.4vw,30px);color:var(--ink);margin-top:28px;letter-spacing:-.02em}
.prose h3{color:var(--ink);margin-top:10px}
.prose ul{margin:0;padding-left:20px;display:flex;flex-direction:column;gap:8px}
.prose a{color:var(--accent)}
.prose .note{margin-top:8px}
.draft{border:1px solid rgba(226,184,74,.45);background:rgba(226,184,74,.06);border-radius:12px;padding:14px 16px;font:400 13px/1.55 var(--mono);color:var(--soft)}
.draft b{color:var(--vt);font-weight:500}

.gloss{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 36px;margin:0}
.gloss div{border-top:1px solid var(--line);padding:16px 0}
.gloss dt{font:600 17px/1.3 var(--display)}
.gloss dt span{font:500 11px/1 var(--mono);letter-spacing:.1em;color:var(--accent);margin-left:10px;text-transform:uppercase}
.gloss dd{margin:6px 0 0;color:var(--soft);font-size:15px;line-height:1.55}
@media (max-width:900px){.gloss{grid-template-columns:1fr}}

.formula{border:1px solid var(--line);border-radius:16px;background:var(--panel);padding:24px;display:flex;flex-direction:column;gap:18px}
.formula .eq{font:500 clamp(18px,2.2vw,26px)/1.4 var(--mono);color:var(--ink);overflow-x:auto;white-space:nowrap}
.formula .eq em{font-style:normal;color:var(--o2)}
.formula .eq i{font-style:normal;color:var(--flare)}
.formula dl{margin:0;display:grid;grid-template-columns:auto 1fr;gap:8px 16px;font-size:15px}
.formula dt{font:500 13px/1.5 var(--mono);color:var(--o2)}
.formula dd{margin:0;color:var(--soft)}

.proto{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.proto .card ol{margin:4px 0 0;padding-left:18px;color:var(--muted);font-size:15px;line-height:1.5;display:flex;flex-direction:column;gap:4px}
@media (max-width:900px){.proto{grid-template-columns:1fr}}

.facts2{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--line);margin:0}
.facts2 div{padding:18px 16px 0 0}
.facts2 dt{font:500 11px/1.3 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.facts2 dd{margin:6px 0 0;font-size:17px;color:var(--ink)}
@media (max-width:900px){.facts2{grid-template-columns:1fr 1fr;row-gap:12px}}

.faqcat{font:500 12px/1 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin:44px 0 6px}
.faqcat:first-child{margin-top:0}

.markbig{width:min(280px,60vw);height:auto;display:block}
.nf{min-height:calc(100vh - var(--navh) - 200px);display:flex;align-items:center}
.nf .wrap{display:flex;flex-direction:column;gap:22px;align-items:flex-start}
.nf .code{font:500 14px/1 var(--mono);color:var(--flare);letter-spacing:.14em}

/* footer v2 */
.foot{grid-template-columns:1fr 1.4fr}
.fcols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.fcols h4{margin:0 0 12px;font:500 11px/1 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.fcols ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:9px}
.fcols a{text-decoration:none;color:var(--soft);font-size:15px}
.fcols a:hover{color:var(--accent)}
.fns{margin-top:48px;padding-top:28px;border-top:1px solid var(--line)}
@media (max-width:900px){.foot{grid-template-columns:minmax(0,1fr)}}
@media (max-width:540px){.fcols{grid-template-columns:1fr 1fr}}

/* ================= design review v3 ================= */
[hidden]{display:none!important}

/* statement headlines: vary the rhythm */
h2.xl{font-size:clamp(44px,6.4vw,96px);line-height:.96;letter-spacing:-.045em}
.sec-head{margin-bottom:56px}
.sec-head .body{margin-top:6px}
.hero .lede{max-width:32ch}
.hero .crumb{font-size:13px;letter-spacing:.02em;color:var(--soft);text-decoration:underline;text-decoration-color:var(--line2);text-underline-offset:4px;max-width:36rem}
.hero .crumb:hover{color:var(--accent);text-decoration-color:var(--accent)}
.crumb{display:inline-block}

/* colour discipline: orange = CO2 + primary action only */
.tag{color:var(--muted);border-color:var(--line2)}
.cant{border-color:var(--line2);background:var(--panel)}
.cant h3{color:var(--soft)}
.grid3 .card .metric[style*="flare"]{color:var(--muted)!important}

/* fewer boxes: object-like things keep panels, lists become ruled */
.grid3 .card,.proto .card{border:0;border-top:1px solid var(--line2);border-radius:0;background:none;padding:22px 0 0}
.steps li{border:0;border-top:1px solid var(--line2);border-radius:0;background:none;padding:18px 0 0}
.grid3{column-gap:40px;row-gap:36px}

/* product outputs: typographic sheet */
.sheet{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid var(--line2)}
.sheet .card{border:0;border-radius:0;background:none;padding:28px 28px 32px 0;border-bottom:1px solid var(--line);gap:10px}
.sheet .card:not(:nth-child(3n+1)){padding-left:28px;border-left:1px solid var(--line)}
.sheet .card h3{font:800 clamp(30px,3.4vw,50px)/1 var(--display);letter-spacing:-.03em;order:2}
.sheet .card .metric{order:1}
.sheet .card p{order:3;max-width:30ch}
@media (max-width:900px){.sheet{grid-template-columns:1fr}.sheet .card,.sheet .card:not(:nth-child(3n+1)){padding:24px 0;border-left:0}}

/* closing band: a sign-off, not a widget */
.band{position:relative;overflow:hidden;border:0;border-top:1px solid var(--line2);border-radius:0;background:none;padding:clamp(48px,7vw,96px) 0 0;display:block}
.bandcopy{position:relative;z-index:1;display:flex;flex-direction:column;gap:20px;max-width:46rem}
.bandcopy h2{max-width:14ch}
.bandmark{position:absolute;right:-60px;top:24px;width:min(460px,46vw);height:auto;fill:none;stroke:var(--line2);stroke-width:2.2;opacity:.9;pointer-events:none}
.bandmark path:last-child{stroke:rgba(242,92,58,.35)}
@media (max-width:700px){.bandmark{width:70vw;right:-30vw;top:auto;bottom:-20px;opacity:.6}}

/* live HUD: colour the numbers, give them size */
.ro .v{font-size:42px}
#ho{color:var(--o2)}#hc{color:var(--flare)}

/* phones: lead with the report, reveal on scroll */
.phone:nth-child(2){transform:scale(1.04);box-shadow:0 0 0 1.5px #343E45,0 30px 80px -30px rgba(0,0,0,.9),0 0 90px -20px rgba(60,196,213,.35)}
@media (prefers-reduced-motion:no-preference){
  .rv{opacity:0;transform:translateY(32px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.7,.2,1)}
  .rv.in{opacity:1;transform:none}
  .phone.rv.in:nth-child(2){transform:scale(1.04)}
}
.flow4{margin-top:96px}

/* scroll-scrubbed chapters: heights by class, shorter on phones */
.seq[data-seq="t"]{height:300vh}
.seq[data-seq="e"]{height:320vh}
@media (max-width:900px){.seq[data-seq="t"]{height:240vh}.seq[data-seq="e"]{height:290vh}}
.stage-view{-webkit-mask-image:linear-gradient(180deg,transparent,#000 9%,#000 94%,transparent);mask-image:linear-gradient(180deg,transparent,#000 9%,#000 94%,transparent)}
.stage{grid-template-columns:minmax(300px,31%) 1fr}
@media (max-width:900px){.stage{grid-template-columns:1fr}}

/* comparison table: Ventracer first; label column sticks on phones */
@media (max-width:540px){
  .tbl tbody th,.tbl thead th:first-child{position:sticky;left:0;background:var(--panel);z-index:1;min-width:120px}
  table{min-width:520px}
}

/* science hero figure */
.vsl{margin:0;display:flex;flex-direction:column;gap:8px}
.vsl svg{width:100%;height:auto;display:block;overflow:visible}
.vsl .vgrid line{stroke:var(--line);stroke-width:1}
.vsl .vax{fill:var(--muted);font:500 13px var(--mono)}
.vsl .vline{stroke-width:2;stroke-dasharray:6 6;opacity:.85}
.vsl .vvt line{stroke:var(--vt);stroke-width:1.5;stroke-dasharray:4 6}
.vsl .vvt circle{fill:var(--vt)}
.vsl .vvt text{fill:var(--vt);font:600 16px var(--mono)}
@media (prefers-reduced-motion:no-preference){
  .vsl .vdot{opacity:0;animation:vpop .5s ease forwards}
  .vsl .vline{opacity:0;animation:vfade .6s ease forwards}
  .vsl .vvt{opacity:0;animation:vfade .5s ease 2.6s forwards}
  .vsl .vvt circle{transform-box:fill-box;transform-origin:center;animation:vpulse 1.2s ease 2.8s 2}
}
@keyframes vpop{from{opacity:0;transform:translateY(6px)}to{opacity:.8;transform:none}}
@keyframes vfade{to{opacity:.85}}
@keyframes vpulse{50%{transform:scale(1.7)}}

/* about: principles as a numbered list; annotated mark */
.principles{list-style:none;margin:0;padding:0;counter-reset:pr;display:flex;flex-direction:column}
.principles li{counter-increment:pr;display:grid;grid-template-columns:64px 1fr;column-gap:12px;padding:22px 0;border-top:1px solid var(--line2)}
.principles li::before{content:"0" counter(pr);grid-row:span 2;font:500 34px/1 var(--mono);color:var(--accent)}
.principles p{color:var(--muted);font-size:15px;margin-top:6px}
.markfig{margin:0;display:flex;flex-direction:column;gap:18px}
.markfig .markbig{width:min(440px,78vw)}
.markfig figcaption{display:flex;flex-wrap:wrap;gap:8px 18px;font:500 12px/1.4 var(--mono)}
.mk::before{content:"";display:inline-block;width:9px;height:9px;border-radius:50%;margin-right:8px;vertical-align:0}
.mk.o2::before{background:var(--o2)}.mk.fl::before{background:var(--flare)}.mk.vt::before{background:var(--vt)}
.mk{color:var(--soft)}

/* labs: who you'll talk to */
.who-card{margin-top:56px;border-top:1px solid var(--line2);padding-top:28px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px 32px;align-items:end;max-width:60rem}
.who-card .kicker{grid-column:1/-1}
.who-name{font:800 clamp(28px,3vw,40px)/1.05 var(--display);letter-spacing:-.02em}
.who-card .body{grid-column:1}
.who-card .btn{grid-column:2;grid-row:2/4;align-self:center}
@media (max-width:700px){.who-card{grid-template-columns:1fr}.who-card .btn{grid-column:1;grid-row:auto;justify-self:start}}

/* pilot form */
.pform{display:flex;flex-direction:column;gap:18px}
.pform fieldset{border:0;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.flabel{font:500 11px/1.3 var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.fgrid{display:grid;grid-template-columns:1fr 1fr;gap:14px 16px}
.fgrid label{display:flex;flex-direction:column;gap:7px;min-width:0}
.fgrid .wide{grid-column:1/-1}
.pform input,.pform textarea{font:400 16px/1.4 var(--display);color:var(--ink);background:var(--night);border:1px solid var(--line2);border-radius:10px;padding:12px 14px;width:100%}
.pform input:focus,.pform textarea:focus{outline:2px solid var(--accent);outline-offset:1px;border-color:transparent}
.pform input::placeholder{color:#7D878D}
.pform .btn{align-self:flex-start;min-height:48px}
.sel{user-select:all;color:var(--soft)}
.seg button{min-height:44px}
@media (max-width:540px){.fgrid{grid-template-columns:1fr}}
@media (max-width:900px){#pilot .pilot img{display:none}}
#pilot .pilot{align-items:stretch}

/* FAQ: category rail */
@media (min-width:1020px){
  #faq .faqgrp{display:grid;grid-template-columns:220px minmax(0,1fr);gap:40px;padding-top:36px;border-top:1px solid var(--line2);margin-bottom:28px}
  #faq .faqgrp .faqcat{margin:0;position:sticky;top:96px;align-self:start}
  #faq .faq{max-width:none;border-top:0}
}

/* nav CTA: keep it on phones, shorter label */
.navcta .sm{display:none}
@media (max-width:420px){.nav .btn.primary{display:inline-flex;padding:8px 12px;font-size:13px}.navcta .lg{display:none}.navcta .sm{display:inline}}
.links a{padding:8px 0}

/* mobile sticky CTA bar */
.mcta{display:none}
@media (max-width:900px){
  .mcta{display:block;position:fixed;left:0;right:0;bottom:0;z-index:30;padding:10px var(--gr) calc(10px + env(safe-area-inset-bottom,0px)) var(--gl);background:rgba(23,28,32,.94);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-top:1px solid var(--line);transform:translateY(110%);transition:transform .3s ease;visibility:hidden}
  .mcta.show{transform:none;visibility:visible}
  .mcta .btn{width:100%;justify-content:center;min-height:48px}
}

/* footnotes: lighter, two columns on wide screens */
.fns{font-size:11px;color:#949EA3}
@media (min-width:1020px){.fns{columns:2;column-gap:48px}.fns li{break-inside:avoid;margin-bottom:10px}}

.plan div{grid-template-columns:150px 1fr}
.plan dd{display:flex;justify-content:space-between;align-items:baseline;gap:16px}
.plan dd .st{flex:none}
@media (max-width:900px){.plan dd{flex-direction:column;gap:8px}}
.fh{margin:0 0 12px;font:500 11px/1 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}

.beats li:not(.on) .n{color:var(--soft)}
.ahead .h4{margin:0;font:700 19px/1.15 var(--display);letter-spacing:-.01em}

/* ================= VenTracer brand kit v1 ================= */
.brand .logo{display:block;height:27px;width:auto}
.lock .logo-l{display:block;height:36px;width:auto}
.nav{border-bottom-color:var(--line)}
@media (max-width:1020px){.nav .wrap{gap:10px}}
.bandmark{position:absolute;right:-40px;top:32px;width:min(520px,48vw);height:auto;color:#232A30;fill:currentColor;stroke:none;opacity:1;pointer-events:none}
.bandmark path:last-child{stroke:none}
@media (max-width:700px){.bandmark{width:80vw;right:-28vw;top:auto;bottom:-10px}}
.markfig .markbig{width:min(360px,70vw);height:auto;color:var(--flare);display:block}
.markfig .lockup-big{width:min(480px,80vw);height:auto;display:block}
.markfig{gap:40px}
.nfmark{width:120px!important;height:auto;color:var(--flare)}

/* ---------- films ---------- */
.cine-film{margin:0;cursor:pointer;box-shadow:0 40px 120px -40px rgba(0,0,0,.9)}
.cine-btn{position:absolute;left:18px;bottom:18px;z-index:2;display:inline-flex;align-items:center;gap:10px;min-height:44px;padding:0 18px 0 14px;border-radius:999px;border:1px solid rgba(243,241,233,.22);background:rgba(23,28,32,.66);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);color:var(--ink);font:500 13px/1 var(--mono);letter-spacing:.06em;cursor:pointer;transition:background .2s ease,transform .15s ease}
.cine-btn:hover{background:rgba(23,28,32,.85)}
.cine-btn:active{transform:scale(.97)}
.cine-btn .ic{width:0;height:0;border-style:solid;border-width:6px 0 6px 10px;border-color:transparent transparent transparent var(--accent)}
.cine-film.full .cine-btn .ic{width:10px;height:10px;border:0;border-radius:2px;background:var(--accent)}
.cine-t{position:absolute;right:18px;top:16px;z-index:2;font:500 12px/1 var(--mono);letter-spacing:.1em;color:rgba(243,241,233,.75);opacity:0;transition:opacity .3s ease}
.cine-film.full .cine-t{opacity:1}
.cine-bar{position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:0 50%;z-index:2;opacity:.35;transition:opacity .3s ease}
.cine-film.full .cine-bar{opacity:1}
@media (max-width:540px){.cine-btn{left:12px;bottom:12px;padding:0 14px 0 12px;font-size:12px}.cine-film{border-radius:12px}}

/* ---------- sound toggle ---------- */
.snd{flex:none;width:38px;height:38px;border-radius:50%;border:1px solid var(--line2);background:none;display:inline-flex;align-items:center;justify-content:center;gap:2.5px;cursor:pointer;padding:0;margin-left:-6px;transition:border-color .2s ease}
.snd:hover{border-color:var(--muted)}
.snd i:nth-child(1){height:5px}.snd i:nth-child(2){height:10px}.snd i:nth-child(3){height:7px}.snd i:nth-child(4){height:4px}
.snd:active{transform:scale(.95)}
.snd i{display:block;width:2px;height:6px;border-radius:1px;background:var(--muted);transition:height .3s ease,background .3s ease}
.vt-sound .snd{border-color:rgba(242,92,58,.55)}
.vt-sound .snd i{background:var(--accent);height:12px}
.vt-sound .snd i:nth-child(2){height:16px}.vt-sound .snd i:nth-child(4){height:8px}
@media (prefers-reduced-motion:no-preference){.vt-sound .snd i{animation:eq 1s ease-in-out infinite alternate}.vt-sound .snd i:nth-child(2){animation-delay:-.4s}.vt-sound .snd i:nth-child(3){animation-delay:-.7s}.vt-sound .snd i:nth-child(4){animation-delay:-.2s}}
@keyframes eq{from{transform:scaleY(.35)}to{transform:scaleY(1)}}
@media (max-width:1020px){.snd{margin-left:auto}.menu-btn{margin-left:0}}
@media (max-width:420px){.nav .wrap{gap:8px}.brand .logo{height:23px;width:auto}.snd{width:36px;height:36px}}
.srcs{margin:18px 0 0;padding:16px 0 0 18px;border-top:1px solid var(--line);display:grid;gap:10px;font-size:13px;line-height:1.5;color:var(--muted)}
.srcs a{color:var(--soft)}

/* ---------- guides ---------- */
.guide .reviewed{margin-top:-8px;font:500 12px/1.5 var(--mono);color:var(--muted);letter-spacing:.04em}
.guide .reviewed a{color:var(--soft)}
.guide .sec .wrap>*:not(.tblwrap):not(.sec-head){max-width:72ch}
.guide .sec h3{font:700 22px/1.3 var(--display);margin:28px 0 8px}
.guide .sec ul,.guide .sec ol:not(.srcs){padding-left:20px;display:grid;gap:8px;color:var(--soft);line-height:1.6}
.guide .sec .body+.body{margin-top:14px}
.tblwrap{overflow-x:auto;margin:20px 0}
.tblwrap table{min-width:560px}
ol.srcs{padding-left:20px}
.answers .card h3{font:700 20px/1.3 var(--display)}
.answers .card p{color:var(--soft);line-height:1.6}

/* =====================================================================
   VenTracer palette v2 · "day with night moments"
   Reading happens on warm paper (Chalk); the cinematic moments stay at night.
   Brand anchors: Chalk #F3F1E9 (paper), Carbon #171C20 (night and ink), Oxide #F25C3A (fills, marks, large type).
   Small Oxide text uses #AF2F09 on paper and #F89D79 on night; every text pair passes WCAG AA and APCA.
   Data colours: O2 teal and threshold gold; deeper shades on paper keep ≥3:1 for graphics, ≥4.5:1 for text.
   ===================================================================== */
:root{
  /* paper: Chalk with Carbon ink, near-neutral greys (a lab notebook, not a spa) */
  --night:#F3F1E9; --panel:#FAF9F5; --raised:#E8E6DF; --line:#D8D6CF; --line2:#BDBBB4;
  --ink:#171C20; --soft:#404446; --muted:#5E6265;
  --o2:#006A75; --accent:#AF2F09; --flare:#F25C3A; --vt:#835A00;
  --carbon:#171C20;
  color-scheme:light;
}
/* night moments: hero, 3D chapters, closing bands, footer, anything marked .night; app mockups always render their dark UI */
.hero,.seq,.bandsec,footer,.night,.phone{
  /* night: brand Carbon; warmth comes from Chalk text and a lighter Oxide for small labels */
  --night:#171C20; --panel:#1D2328; --raised:#232A30; --line:#2A3238; --line2:#3A444C;
  --ink:#F3F1E9; --soft:#D8D5CE; --muted:#AEAAA4;
  --o2:#3CC4D5; --accent:#F89D79; --flare:#F25C3A; --vt:#E2B84A;
  color-scheme:dark;
}
.hero,.seq,.bandsec,footer,.night{background:var(--night);color:var(--ink)}
.phone{color:var(--ink)}
body{background:var(--night);color:var(--ink)}

/* chrome on paper */
.nav{background:rgba(243,241,233,.96);border-bottom:1px solid var(--line)}
.links a{color:var(--soft)}
.brand{padding:8px 0}
.nf .code,.code{color:var(--accent)}
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.nav.open .menu{background:rgba(243,241,233,.98)}
@media (max-width:900px){.mcta{background:rgba(243,241,233,.94);border-top:1px solid var(--line)}}
.btn.primary{background:var(--flare);color:var(--carbon)}
.btn.primary:hover{background:#E8532F}
.pform input::placeholder{color:var(--muted)}
thead .us{color:var(--accent)}
#hc{color:var(--accent)}
.live{color:var(--accent)!important}
.live::before{background:var(--accent)}
.formula .eq i{color:var(--accent)}
.band{background:none}

/* soft, warm elevation on paper instead of hard dark slabs */
.card,.tbl,.explore a,.faq details,.formula,.cant,.who-card{box-shadow:0 1px 0 rgba(255,255,255,.6) inset}
.film,.cine-film{box-shadow:0 30px 70px -36px rgba(60,40,20,.45)}

/* motion layer on paper: lines and markers follow the surface tokens */
.sc-pipe .l,.sc-pipe .n{stroke:var(--accent)}
.sc-pipe .n{fill:var(--night)}
.sc-pipe .h{fill:var(--accent)}
.sc-pipe .k{fill:var(--ink)}
.sc-head line{stroke:var(--line2)}
.sc-head circle{stroke:var(--night)}
.sc-rl{background:var(--line2)}
.sc-rl.now,.sc-rd.now{background:var(--accent)}
.sc-pulse{border-color:var(--accent)}
.vt-prog{background:var(--flare)}
.chart .xh line{stroke:var(--line2)}
.sc-cell{background:linear-gradient(90deg,rgba(242,92,58,.16),rgba(242,92,58,.04) 80%);box-shadow:inset 2px 0 0 var(--accent)}

/* =====================================================================
   VenTracer spacing system
   One section rhythm, driven by width (never viewport height), on a 4/8 px scale.
   - Neighbouring sections on the same surface share ONE gap (no doubled padding).
   - Where the surface changes (paper <-> night) both sides keep full breathing room.
   - The page-header divider gets the same space above and below it.
   ===================================================================== */
:root{
  --sec:clamp(72px,8vw,120px);        /* gap between sections */
  --sec-sm:clamp(48px,5.5vw,80px);    /* either side of the page-header divider */
  --head-gap:clamp(32px,3.5vw,48px);  /* section heading -> its content */
}
.sec{padding-block:var(--sec)}
/* same surface, consecutive: collapse to a single gap */
.sec:not(.bandsec) + .sec:not(.bandsec),
.guide > .sec + .sec{padding-top:0}
/* page header: equal space either side of its bottom rule */
.phead{padding-block:clamp(72px,9vw,128px) var(--sec-sm)}
.phead + .sec,
.phead + .guide > .sec:first-of-type{padding-top:var(--sec-sm)}
.guide > .reviewed{margin:calc(var(--sec-sm) * .5) auto 0;display:block}
.guide > .reviewed + .sec{padding-top:calc(var(--sec-sm) * .6)}
/* section headings */
.sec-head{margin-bottom:var(--head-gap)}
.sec-head .body{margin-top:4px}
/* closing bands are their own night surface: full rhythm, symmetric */
.bandsec{padding-block:var(--sec)}
.band{padding:0;border-top:0}
.bandmark{top:0}
/* footer follows a night band on the same surface: one gap, a hairline divides */
.bandsec + .mcta + footer,.bandsec + footer{padding-top:var(--sec-sm)}
/* film sections keep the rhythm; the note under a film sits close to it */
.cine .note,.film + .note{margin-top:14px}
/* hero: content clears the nav and the lower edge equally on phones */
@media (max-width:900px){
  .hero .wrap{padding-block:0 var(--sec-sm)}
  .sec-head{margin-bottom:28px}
}
.sec .wrap > :last-child,.sec .wrap > .split > :last-child > :last-child{margin-bottom:0}
/* phones: solid menu panel (nothing ghosting through), readable badges */
.nav.open .menu{background:#F3F1E9;box-shadow:0 18px 40px -18px rgba(23,28,32,.35)}
@media (max-width:900px){.tag,.st{font-size:11px}}

/* =====================================================================
   Mobile visual pass (phone reviews at 390 and 360)
   ===================================================================== */
/* type details: superscripts and subscripts never stretch a line; orphans avoided */
sup{line-height:0;vertical-align:baseline;position:relative;top:-.5em}
h1 sub,h2 sub,h3 sub{font-size:.5em;vertical-align:baseline;position:relative;top:.12em}
p,li,dd{text-wrap:pretty}
/* links in running copy are Oxide, never data teal */
.body a,.lede a,dd a,.note a{color:var(--accent)}
/* live readout: three equal columns, numbers scale with the screen; labels stay one inline run */
.readouts{column-gap:16px}
.ro{min-width:0}
.ro .k{display:block;line-height:1.3}
.ro .k i{margin-right:6px;vertical-align:1px}
@media (max-width:900px){.ro .v{font-size:clamp(22px,7vw,34px)}}
/* film controls: light label on the dark pill; on phones the control sits in a bar under the picture */
.cine-btn{color:#F3F1E9}
@media (max-width:540px){
  .cine-film{aspect-ratio:auto;background:#171C20}
  .cine-film video{height:auto;aspect-ratio:16/9}
  .cine-btn{position:static;margin:10px 12px 12px;display:inline-flex}
}
/* plan lists: text and badge stay separate; stack label over value on phones; no double rule between two lists */
.plan dd .tx{display:block}
@media (max-width:900px){
  .plan dd{align-items:flex-start}
  .split:has(> .plan + .plan){row-gap:0}
  .split > .plan + .plan{border-top:0}
}
@media (max-width:600px){.plan div{grid-template-columns:1fr;gap:6px}}
@media (max-width:480px){.facts2{grid-template-columns:1fr;row-gap:0}.facts2 div{padding:14px 0 0}}
/* FAQ categories: label clearly above its list, groups clearly apart */
@media (max-width:899px){
  .faqgrp + .faqgrp{margin-top:48px}
  .faqcat,.faqcat:first-child{margin:0 0 14px}
}
/* specification groups read as separate groups on one column */
@media (max-width:900px){.specs{row-gap:40px}}
/* small mono links breathe */
.crumb{line-height:1.6}
@media (max-width:900px){.crumb{font-size:13px}}
/* concept caption follows the left edge, normal gap */
.appnote{margin-top:16px}
/* card labels: one consistent uppercase meta style */
.card .metric{text-transform:uppercase;letter-spacing:.12em;font-size:11px}
/* step dividers match every other rule */
.flow4 li{border-top-width:1px}
/* forms */
.pform legend{padding:0}
/* footnotes readable on phones */
.fns{font-size:12.5px;color:var(--muted)}
/* hero eyebrow: a plain label on phones, not a three-line pill */
@media (max-width:900px){
  .hero .chip{border:0;padding:0;border-radius:0;align-items:flex-start;line-height:1.5;letter-spacing:.1em}
  .hero .chip i{margin-top:.5em;flex:none}
}
/* home comparison fits a phone: four fixed columns, wrapped text, no hidden column */
@media (max-width:540px){
  div.tbl table{min-width:0;table-layout:fixed}
  div.tbl th,div.tbl td{padding:11px 5px;font-size:13px;overflow-wrap:normal}
  div.tbl th:first-child,div.tbl td:first-child{padding-left:10px}
  div.tbl thead th{font-size:10px;letter-spacing:.06em}
  div.tbl thead td,div.tbl tbody th{width:27%}
  div.tbl thead th:nth-child(2),div.tbl thead th:nth-child(3){width:25%}
  div.tbl tbody th,div.tbl thead th:first-child{position:static;min-width:0}
  div.tbl .tag{display:inline-block;margin:4px 0 0}
}
/* guide tables scroll sideways: say so with edge shadows; keep short values whole */
.tblwrap[data-more],.tbl[data-more]{-webkit-mask-image:linear-gradient(90deg,#000 80%,transparent);mask-image:linear-gradient(90deg,#000 80%,transparent)}
.tblwrap th,.tblwrap td{min-width:7.5rem}
.tblwrap thead th{white-space:nowrap}
/* guides: the opening paragraph sits at body spacing; long titles fit a phone */
.guide .sec-head:has(> .body){margin-bottom:16px}
.guide .sec ol:not(.srcs){padding-left:28px}
@media (max-width:540px){
  .phead h1{font-size:clamp(38px,10.5vw,46px)}
  .phead:has(+ .guide) h1{font-size:clamp(32px,9vw,44px)}
}
/* science chart axis labels stay legible when the chart scales down */
@media (max-width:540px){.chart .ax text{font-size:17px}}
@media (max-width:900px){.flow4{margin-top:48px}}
.flow4 a{color:var(--accent)}
.split:has(> .plan:last-child) + .who-card{border-top:0;padding-top:0;margin-top:48px}

/* two-answer blocks fill the row instead of leaving an empty third column */
@media (min-width:901px){.grid3.answers:has(> :nth-child(2):last-child){grid-template-columns:repeat(2,minmax(0,1fr))}}