/* ============================================================
   Self-hosted variable fonts (Inter + Roboto Mono)
   ============================================================ */
@font-face{font-family:'Inter';font-style:normal;font-weight:300 900;font-display:swap;unicode-range:U+0460-052F, U+1C80-1C8A, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
 src:url(fonts/inter-1.woff2) format('woff2');
}
@font-face{font-family:'Inter';font-style:normal;font-weight:300 900;font-display:swap;unicode-range:U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
 src:url(fonts/inter-2.woff2) format('woff2');
}
@font-face{font-family:'Inter';font-style:normal;font-weight:300 900;font-display:swap;unicode-range:U+1F00-1FFF;
 src:url(fonts/inter-3.woff2) format('woff2');
}
@font-face{font-family:'Inter';font-style:normal;font-weight:300 900;font-display:swap;unicode-range:U+0370-0377, U+037A-037F, U+0384-038A, U+038C, U+038E-03A1, U+03A3-03FF;
 src:url(fonts/inter-4.woff2) format('woff2');
}
@font-face{font-family:'Inter';font-style:normal;font-weight:300 900;font-display:swap;unicode-range:U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB;
 src:url(fonts/inter-5.woff2) format('woff2');
}
@font-face{font-family:'Inter';font-style:normal;font-weight:300 900;font-display:swap;unicode-range:U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
 src:url(fonts/inter-6.woff2) format('woff2');
}
@font-face{font-family:'Inter';font-style:normal;font-weight:300 900;font-display:swap;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+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
 src:url(fonts/inter-7.woff2) format('woff2');
}
@font-face{font-family:'Roboto Mono';font-style:normal;font-weight:300 500;font-display:swap;unicode-range:U+0460-052F, U+1C80-1C8A, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
 src:url(fonts/robotomono-1.woff2) format('woff2');
}
@font-face{font-family:'Roboto Mono';font-style:normal;font-weight:300 500;font-display:swap;unicode-range:U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
 src:url(fonts/robotomono-2.woff2) format('woff2');
}
@font-face{font-family:'Roboto Mono';font-style:normal;font-weight:300 500;font-display:swap;unicode-range:U+0370-0377, U+037A-037F, U+0384-038A, U+038C, U+038E-03A1, U+03A3-03FF;
 src:url(fonts/robotomono-3.woff2) format('woff2');
}
@font-face{font-family:'Roboto Mono';font-style:normal;font-weight:300 500;font-display:swap;unicode-range:U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB;
 src:url(fonts/robotomono-4.woff2) format('woff2');
}
@font-face{font-family:'Roboto Mono';font-style:normal;font-weight:300 500;font-display:swap;unicode-range:U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
 src:url(fonts/robotomono-5.woff2) format('woff2');
}
@font-face{font-family:'Roboto Mono';font-style:normal;font-weight:300 500;font-display:swap;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+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
 src:url(fonts/robotomono-6.woff2) format('woff2');
}


/* ============================================================
   REDEAUX / Vortex Framework — external stylesheet
   Palette, tokens, and base reset
   ============================================================ */
:root{
  --ink:#efece3;
  --paper:#0b0c10;
  --muted:#aaa69d;
  --line:rgba(239,236,227,0.18);
  --line-hi:rgba(239,236,227,0.42);
  --red:#ff4f31;
  --blue:#76a7ff;
  --lime:#d5f951;
  --focus:#d5f951;
  --panel:#11131f;
  --panel2:#15172b;
  --font-display:'Inter',Arial,sans-serif;
  --font-mono:'Roboto Mono','SFMono-Regular',Consolas,monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
  color-scheme:dark;
}
[data-theme="light"]{
  --ink:#101116;
  --paper:#eeeae0;
  --muted:#625f59;
  --line:rgba(16,17,22,0.20);
  --line-hi:rgba(16,17,22,0.43);
  --red:#e53f25;
  --blue:#1956cf;
  --lime:#739600;
  --focus:#174ac0;
  --panel:#e5e1d7;
  --panel2:#dad5c9;
  color-scheme:light;
}
*{box-sizing:border-box;margin:0;padding:0}
html{
  scroll-behavior:smooth;
  -webkit-text-size-adjust:100%;
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-display);
  line-height:1.5;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  transition:background .5s var(--ease),color .5s var(--ease);
}
/* per-language font fallbacks: Inter covers Latin only */
html[lang="ja"]{--font-display:'Inter','Hiragino Sans','Yu Gothic UI','Meiryo',sans-serif}
html[lang="ko"]{--font-display:'Inter','Apple SD Gothic Neo','Malgun Gothic',sans-serif}
html[lang="ko"]{--font-mono:'Roboto Mono','SFMono-Regular',Consolas,'Malgun Gothic',monospace}
html[lang="ja"]{--font-mono:'Roboto Mono','SFMono-Regular',Consolas,'Hiragino Sans','Meiryo',monospace}
a{color:inherit}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer}
::selection{background:var(--red);color:var(--paper)}

/* Visually hidden text (screen-reader only) */
.sr-only{
  position:absolute;width:1px;height:1px;overflow:hidden;
  clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;
}

/* Accessible skip link */
.skip-link{
  position:absolute;left:-2000px;top:0;z-index:2000;
  background:var(--focus);color:var(--panel);
  padding:12px 20px;font-weight:600;text-decoration:none;
  border-radius:0 0 8px 0;
}
.skip-link:focus{
  left:0;color:var(--panel);
  outline:3px solid var(--red);outline-offset:0;
}

/* Visible focus outline */
:focus-visible{
  outline:3px solid var(--focus);
  outline-offset:2px;
  border-radius:2px;
}

/* Reusable container */
.wrap{width:min(1240px,100% - 48px);margin-inline:auto}
@media(max-width:640px){.wrap{width:min(1240px,100% - 32px)}}

/* Section shell */
section{padding:clamp(70px,10vw,130px) 0;position:relative}
.eyebrow{
  font-family:var(--font-mono);
  font-size:11px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--muted);
  display:inline-flex;align-items:center;gap:12px;
}
.eyebrow::before{content:"";width:34px;height:1px;background:var(--line-hi)}
h1,h2,h3{font-weight:900;line-height:1.05;letter-spacing:-.02em}
.lede{color:var(--muted);font-size:clamp(15px,1.6vw,19px);max-width:60ch;font-weight:300}
.lede strong{color:var(--ink);font-weight:500}
.lede.sub{margin-top:14px}
.rule{height:1px;background:var(--line);border:0;margin:60px 0}
.arti{color:var(--red)}

/* ============================================================
   NAVIGATION
   ============================================================ */
.nav{
  position:fixed;inset:0 0 auto 0;z-index:100;
  transition:background .4s var(--ease),backdrop-filter .4s var(--ease),border-color .4s var(--ease);
  border-bottom:1px solid transparent;
}
.nav.scrolled{
  background:color-mix(in srgb,var(--paper) 78%,transparent);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom-color:var(--line);
}
.nav__inner{
  width:min(1240px,100% - 48px);margin-inline:auto;
  display:flex;align-items:center;justify-content:space-between;
  min-height:68px;
}
.nav__brand{
  font-size:20px;font-weight:900;letter-spacing:.16em;
  text-decoration:none;color:var(--ink);
  display:inline-block;position:relative;
}
.wordmark{display:inline-block}
.wordmark span{
  display:inline-block;width:1.2ch;text-align:center;
  will-change:transform;
  animation:wave 5s var(--ease) infinite;
}
@media(prefers-reduced-motion:reduce){.wordmark span{animation:none}}
@keyframes wave{
  0%,8%,100%{transform:translateY(0)}
  24%{transform:translateY(-3px)}
  40%{transform:translateY(-1px)}
}
.nav__links{display:flex;align-items:center;gap:clamp(14px,2.4vw,30px)}
.nav__link{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;
  color:var(--muted);text-decoration:none;text-transform:uppercase;
  transition:color .25s var(--ease);
}
.nav__link:hover{color:var(--ink)}
.theme-switch{
  display:flex;align-items:center;gap:2px;
  border:1px solid var(--line);border-radius:999px;
  padding:3px;flex:0 0 auto;
  transition:border-color .3s,background .3s;
}
.theme-switch:hover{border-color:var(--line-hi)}
.lang-wrap{flex:0 0 auto}
.lang-pick{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;
  color:var(--muted);background:var(--panel);
  border:1px solid var(--line);border-radius:999px;
  padding:5px 8px;cursor:pointer;max-width:92px;
  transition:border-color .3s,color .3s;
}
.lang-pick:hover{border-color:var(--line-hi);color:var(--ink)}
.lang-pick:focus-visible{outline:2px solid var(--focus);outline-offset:2px}
.theme-opt{
  font-family:var(--font-mono);font-size:15px;letter-spacing:0;line-height:1;
  color:var(--muted);background:transparent;border:0;border-radius:999px;
  padding:4px 9px;
  transition:color .25s,background .25s;
}
.theme-opt:hover{color:var(--ink)}
.theme-opt[aria-pressed="true"]{background:var(--ink);color:var(--panel)}
/* single cycling theme button: always shows the active mode's glyph */
.theme-cycle{
  min-width:36px;text-align:center;
  background:var(--ink);color:var(--panel);border:0;
}
.theme-cycle:hover{color:var(--panel)}
.theme-cycle.bump{animation:cycPop .32s var(--ease)}
@keyframes cycPop{
  0%{transform:scale(1) rotate(0)}
  35%{transform:scale(1.4) rotate(-9deg)}
  70%{transform:scale(.85) rotate(4deg)}
  100%{transform:scale(1) rotate(0)}
}
@media(max-width:640px){
  .nav__inner{min-height:60px;width:min(1240px,100% - 32px)}
  .nav__brand{font-size:16px;letter-spacing:.1em;flex:0 0 auto}
  .nav__links{gap:8px;overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch;justify-content:flex-end;padding-bottom:2px}
  .nav__links::-webkit-scrollbar{display:none}
  .nav__link{font-size:10.5px;white-space:nowrap}
  .theme-switch{padding:2px}
  .theme-opt{padding:3px 7px;font-size:13px}
  .lang-pick{font-size:10px;padding:4px 6px;max-width:76px}
}

/* ============================================================
   HERO
   ============================================================ */
.hero{
  min-height:100svh;display:grid;align-items:center;
  position:relative;overflow:hidden;padding-top:68px;
  content-visibility:auto;contain-intrinsic-size:100svh 100svh;
}
.hero__scene{
  position:absolute;inset:0;z-index:0;pointer-events:none;
  --ring-s:var(--line-hi);
  perspective:1150px;overflow:hidden;
}
.hero__scene .torus{
  position:absolute;left:50%;top:48%;width:0;height:0;
  transform-style:preserve-3d;
  --R:clamp(120px,22vw,300px);--hoop:clamp(70px,14vw,130px);
  --tilt:-14deg;
  animation:torusSpin 30s linear infinite;
}
@keyframes torusSpin{from{transform:rotateY(360deg)}to{transform:rotateY(0deg)}}
.torus__ring{
  position:absolute;inset:calc(var(--hoop)/-2);
  width:var(--hoop);height:var(--hoop);border-radius:50%;
  border:1px solid var(--ring-s);
  background:transparent;
  opacity:var(--o,1);
  transform:rotateY(var(--a,0deg)) rotateX(var(--tilt,0deg)) translateZ(var(--R));
}
.torus__ring.h1{--a:0deg;--o:1}
.torus__ring.h2{--a:30deg;--o:.95}
.torus__ring.h3{--a:60deg;--o:.78}
.torus__ring.h4{--a:90deg;--o:.6}
.torus__ring.h5{--a:120deg;--o:.45}
.torus__ring.h6{--a:150deg;--o:.35}
.torus__ring.h7{--a:180deg;--o:.28}
.torus__ring.h8{--a:210deg;--o:.35}
.torus__ring.h9{--a:240deg;--o:.45}
.torus__ring.h10{--a:270deg;--o:.6}
.torus__ring.h11{--a:300deg;--o:.78}
.torus__ring.h12{--a:330deg;--o:.95}
@media(prefers-reduced-motion:reduce){
  .hero__scene .torus{animation:none}
}
.hero__content{
  position:relative;z-index:2;
  width:min(1240px,100% - 48px);margin-inline:auto;
  padding-top:2vh;
}
.hud{
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.14em;
  color:var(--muted);text-transform:uppercase;
  display:flex;flex-wrap:wrap;gap:18px;margin-bottom:clamp(30px,6vh,70px);
  align-items:center;
}
.hud .hud-item{display:inline-flex;align-items:center;gap:8px}
.hud .lbl{color:var(--muted)}
.hud .val{color:var(--ink)}
.hud .dot-status{width:7px;height:7px;border-radius:50%;background:var(--lime);box-shadow:0 0 10px var(--lime);animation:pulse 2.4s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
@media(prefers-reduced-motion:reduce){.hud .dot-status{animation:none}}

.hero__title{
  font-size:clamp(44px,10vw,120px);
  line-height:.96;letter-spacing:-.03em;font-weight:900;
  margin-bottom:clamp(28px,5vh,60px);
}
.hero__title .row{display:block}
.hero__title .row2{color:var(--blue)}
.hero__title .row3{color:var(--red)}
.hero__title .row3 em{
  font-style:normal;font-family:var(--font-mono);font-weight:300;
  font-size:.32em;letter-spacing:.02em;color:var(--muted);
  display:block;margin-top:.35em;
}
.hero__support{
  max-width:56ch;color:var(--muted);font-weight:300;
  font-size:clamp(15px,1.8vw,19px);margin-bottom:clamp(30px,6vh,80px);
}
.hero__support .k-label{
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.18em;
  color:var(--ink);text-transform:uppercase;display:block;margin-bottom:10px;
}
.hero__enter{
  display:flex;justify-content:center;
}
.enter-btn{
  width:180px;height:180px;border-radius:50%;
  position:relative;display:grid;place-items:center;
  background:transparent;border:1px solid var(--line-hi);
  color:var(--ink);text-decoration:none;text-align:center;
  transition:border-color .4s,color .4s,transform .4s var(--ease);
}
.enter-btn:hover{border-color:var(--red);color:var(--red);transform:scale(1.04)}
.enter-btn .orbit-ring{
  position:absolute;inset:12px;border-radius:50%;
  border:1px dashed var(--line-hi);
  transition:border-color .4s;
}
.enter-btn:hover .orbit-ring{border-color:var(--lime)}
.enter-btn .t1,.enter-btn .t2{
  display:block;font-family:var(--font-mono);letter-spacing:.12em;font-size:10px;
}
.enter-btn .t1{color:var(--muted);margin-bottom:4px}
@media(max-width:480px){
  .enter-btn{width:150px;height:150px}
}

/* ============================================================
   CORE INTRODUCTION
   ============================================================ */
.intro .intro__body{max-width:62rem}
.intro h2{
  font-size:clamp(34px,7vw,84px);
  margin-bottom:clamp(24px,4vw,46px);
  text-wrap:balance;
}
.intro .intro__text{
  font-size:clamp(16px,2vw,23px);font-weight:300;color:var(--muted);
  max-width:58ch;line-height:1.55;
}
.intro .intro__text .art{color:var(--red);font-weight:400}

/* ============================================================
   VME
   ============================================================ */
.vme{background:var(--panel);border-block:1px solid var(--line)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:clamp(30px,5vw,56px)}
.section-head h2{font-size:clamp(28px,5vw,58px);margin-top:16px}
.vme__canvas-wrap{position:relative;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:transparent;height:clamp(360px,54vw,560px);margin-bottom:26px}
.vme canvas.vme-field{position:absolute;inset:0;width:100%;height:100%}
.vme .topo-label{
  position:absolute;top:16px;left:16px;z-index:3;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  color:var(--panel);text-transform:uppercase;
  background:var(--lime);
  padding:5px 10px;border-radius:3px;font-weight:500;
}
.vme .active-strands{
  position:absolute;bottom:14px;left:16px;z-index:3;
  font-family:var(--font-mono);font-size:11px;color:var(--muted);letter-spacing:.08em;
}
.dim-tabs{
  display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;
}
.dim-btn{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;
  background:transparent;border:1px solid var(--line);color:var(--ink);
  padding:10px 16px;border-radius:6px;text-transform:uppercase;
  transition:all .3s var(--ease);
}
.dim-btn:hover{border-color:var(--line-hi);color:var(--red)}
.dim-btn[aria-pressed="true"]{
  border-color:var(--focus);color:var(--ink);background:color-mix(in srgb,var(--focus) 14%,transparent);
}
.vme__status{
  display:flex;flex-wrap:wrap;gap:10px 34px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
  color:var(--muted);text-transform:uppercase;margin-bottom:26px;
}
.vme__status .k{color:var(--muted)}
.vme__status .v{color:var(--ink)}
.vme__status .v.poly{color:var(--lime)}
.vme__cards{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;
}
.vme__card{
  background:var(--panel2);border:1px solid var(--line);border-radius:10px;
  padding:18px;color:var(--muted);font-size:13.5px;font-weight:300;
}
.vme__card b{display:block;color:var(--ink);font-weight:600;margin-bottom:6px;font-size:13px;letter-spacing:.02em}
.vme__note{
  font-family:var(--font-mono);font-size:11px;color:var(--muted);
  margin-top:22px;letter-spacing:.04em;
}

/* ============================================================
   AVM
   ============================================================ */
.avm__grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(30px,6vw,80px);align-items:center}
@media(max-width:820px){.avm__grid{grid-template-columns:1fr}}
.avm h2{font-size:clamp(28px,5vw,56px);margin:16px 0 24px}
.avm .lede{margin-bottom:30px}
.avm__list{display:grid;gap:12px;margin-bottom:26px}
.avm__list .li{
  border:1px solid var(--line);border-radius:8px;padding:14px 16px;
  display:flex;gap:18px;align-items:baseline;transition:border-color .3s,transform .3s var(--ease);
}
.avm__list .li:hover{border-color:var(--line-hi);transform:translateX(4px)}
.avm__list .li .code{font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--blue);flex:0 0 auto;width:96px;text-transform:uppercase}
.avm__list .li .txt{color:var(--muted);font-size:14px;font-weight:300}
.avm__list .li .txt b{color:var(--ink);font-weight:600;display:block;margin-bottom:2px}
.avm__note{font-family:var(--font-mono);font-size:11px;color:var(--muted);margin-top:8px;letter-spacing:.04em}

/* Binary cube */
.cube-stage{perspective:900px;display:grid;place-items:center;height:min(60vw,460px)}
.cube-scene{width:200px;height:200px;position:relative;transform-style:preserve-3d;animation:cubespin 22s linear infinite}
@media(prefers-reduced-motion:reduce){.cube-scene{animation:none;transform:rotateX(-18deg) rotateY(-32deg)}}
@keyframes cubespin{
  from{transform:rotateX(-18deg) rotateY(0)}
  to{transform:rotateX(-18deg) rotateY(360deg)}
}
.cube-face{
  position:absolute;inset:0;width:200px;height:200px;
  display:grid;place-items:center;background:transparent;
  border:1px solid var(--line-hi);border-radius:4px;
  font-family:var(--font-mono);font-weight:500;font-size:18px;letter-spacing:.14em;
  color:var(--blue);
  -webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);
}
.cube-face.f1{transform:translateZ(100px);color:var(--red)}
.cube-face.f2{transform:rotateY(90deg) translateZ(100px);color:var(--lime)}
.cube-face.f3{transform:rotateY(180deg) translateZ(100px);color:var(--blue)}
.cube-face.f4{transform:rotateY(-90deg) translateZ(100px);color:var(--red)}
.cube-face.f5{transform:rotateX(90deg) translateZ(100px);color:var(--lime)}
.cube-face.f6{transform:rotateX(-90deg) translateZ(100px);color:var(--ink)}
.cube-face{background:color-mix(in srgb,var(--panel) 42%,transparent)}

/* ============================================================
   VPL + VKL
   ============================================================ */
.lang{background:var(--panel);border-block:1px solid var(--line)}
.lang h2{font-size:clamp(28px,5.4vw,60px);margin:16px 0 20px}
.lang__flow{
  display:flex;align-items:center;flex-wrap:wrap;gap:12px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;
  color:var(--muted);margin:26px 0;
}
.lang__flow .step{border:1px solid var(--line);padding:8px 14px;border-radius:6px;background:var(--panel2)}
.lang__flow .step b{color:var(--ink);font-weight:500}
.lang__flow .arrow{color:var(--red)}
.lang__cols{display:grid;grid-template-columns:1fr 1.2fr;gap:clamp(24px,4vw,48px);align-items:start;margin-top:34px}
@media(max-width:860px){.lang__cols{grid-template-columns:1fr}}
.lang__def{margin-bottom:24px}
.lang__def h3{font-size:clamp(17px,2vw,20px);margin-bottom:8px}
.lang__def h3 .mono{font-family:var(--font-mono);color:var(--red);font-size:.6em;vertical-align:middle;letter-spacing:.1em;margin-left:8px}
.lang__def p{color:var(--muted);font-weight:300;font-size:15px;max-width:46ch}
.code-block{
  background:var(--panel2);border:1px solid var(--line);border-radius:10px;overflow:hidden;
}
.code-head{
  display:flex;justify-content:space-between;align-items:center;
  padding:12px 16px;border-bottom:1px solid var(--line);
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.12em;color:var(--muted);
}
.code-head .file{color:var(--blue)}
.code-head .badge{border:1px solid var(--line-hi);padding:3px 8px;border-radius:999px;color:var(--muted)}
.code-body{
  padding:20px;overflow-x:auto;
  font-family:var(--font-mono);font-size:13px;line-height:1.7;color:var(--ink);
}
.code-body .c-comm{color:var(--muted)}
.code-body .c-kw{color:var(--red)}
.code-body .c-fn{color:var(--blue)}
.code-body .c-str{color:var(--lime)}
.code-body .c-num{color:var(--lime)}
.caption{font-family:var(--font-mono);font-size:11px;color:var(--muted);margin-top:14px;letter-spacing:.04em}

/* ============================================================
   VSL
   ============================================================ */
.vsl__grid{display:grid;grid-template-columns:1.1fr 1fr;gap:clamp(28px,5vw,60px);align-items:start}
@media(max-width:860px){.vsl__grid{grid-template-columns:1fr}}
.vsl h2{font-size:clamp(28px,5vw,56px);margin:16px 0 22px}
.vsl .lede{margin-bottom:24px}
.vsl__orb{
  position:relative;height:clamp(320px,52vw,520px);border:1px solid var(--line);
  border-radius:12px;overflow:hidden;display:grid;place-items:center;
}
.vsl canvas.vsl-orb{position:absolute;inset:0;width:100%;height:100%}
.vsl__orb .vsl-tag{
  position:absolute;z-index:3;font-family:var(--font-mono);font-size:10px;
  letter-spacing:.16em;color:var(--muted);text-transform:uppercase;
}
.vsl__orb .tag-tl{top:14px;left:16px}
.vsl__orb .tag-bl{bottom:14px;right:16px;text-align:right;color:var(--blue)}
.backend-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:10px;margin-top:26px;
}
.backend-cell{
  border:1px solid var(--line);border-radius:8px;padding:12px;text-align:center;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;color:var(--muted);
  background:var(--panel2);
}
.backend-cell b{display:block;color:var(--ink);font-weight:500;margin-bottom:2px}

/* ============================================================
   CYBER404
   ============================================================ */
.c4{background:var(--panel);border-block:1px solid var(--line)}
.c4__grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,60px);align-items:center}
@media(max-width:820px){.c4__grid{grid-template-columns:1fr}}
.c4 h2{font-size:clamp(28px,5vw,56px);margin:16px 0 22px}
.c4 .lede{margin-bottom:24px}
.c4__list{display:grid;gap:10px;margin-bottom:26px}
.c4__list .li{display:flex;gap:12px;color:var(--muted);font-weight:300;font-size:14.5px}
.c4__list .li::before{content:"—";color:var(--red);flex:0 0 auto}
.c4 .pull-btns{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.cta-link{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--red);color:var(--panel);font-weight:600;
  padding:14px 22px;border-radius:8px;text-decoration:none;
  letter-spacing:.03em;transition:transform .3s var(--ease),filter .3s;
}
.cta-link:hover{transform:translateY(-2px);filter:brightness(1.1)}
.cta-link.note{background:transparent;border:1px solid var(--line);color:var(--ink);font-weight:500;font-size:13px}
/* c4 rings visual */
.c4-visual{
  height:clamp(320px,48vw,480px);position:relative;display:grid;place-items:center;
}
.c4-rings canvas{position:absolute;inset:0;width:100%;height:100%}

/* ============================================================
   P2Pm + VSAN
   ============================================================ */
.mesh{background:var(--panel);border-block:1px solid var(--line)}
.mesh h2{font-size:clamp(28px,5.4vw,60px);margin:16px 0 22px}
.mesh canvas.mesh-canvas{width:100%;height:520px;border:1px solid var(--line);border-radius:12px;display:block;background:transparent}
@media(max-width:640px){.mesh canvas.mesh-canvas{height:400px}}
.mesh .lede{margin-bottom:26px}
.mesh__hud{
  display:flex;flex-wrap:wrap;gap:14px;margin-top:14px;
}
.hud-panel{
  border:1px solid var(--line);border-radius:8px;padding:12px 16px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--muted);
  background:color-mix(in srgb,var(--panel2) 70%,transparent);
}
.hud-panel b{display:block;color:var(--ink);font-size:12px;letter-spacing:.06em;margin-bottom:3px}
.hud-panel b.blue{color:var(--blue)}
.hud-panel b.red{color:var(--red)}
.hud-panel b.lime{color:var(--lime)}
.mesh__cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;margin-top:40px}
.mesh__card{
  border:1px solid var(--line);border-radius:10px;padding:20px;background:var(--panel2);
  transition:transform .3s var(--ease),border-color .3s;
}
.mesh__card:hover{transform:translateY(-3px);border-color:var(--line-hi)}
.mesh__card .num{font-family:var(--font-mono);font-size:11px;color:var(--red);letter-spacing:.14em}
.mesh__card h3{font-size:18px;margin:8px 0 4px;letter-spacing:0}
.mesh__card .tagline{font-family:var(--font-mono);font-size:11px;color:var(--blue);letter-spacing:.08em;text-transform:uppercase;margin-bottom:8px}
.mesh__card p{color:var(--muted);font-weight:300;font-size:14px}
.mesh__secure{
  margin-top:34px;border-left:3px solid var(--red);padding:18px 22px;
  background:var(--panel2);border-radius:0 8px 8px 0;
  color:var(--muted);font-size:14px;font-weight:300;max-width:70ch;
}
.mesh__secure strong{color:var(--ink);font-weight:500}

/* ============================================================
   VDBE
   ============================================================ */
.vdbe .db-map{
  position:relative;margin-top:34px;
  display:grid;place-items:center;
  min-height:clamp(360px,50vw,520px);
}
.db-map canvas{position:absolute;inset:0;width:100%;height:100%}
.db-node{
  position:absolute;transform:translate(-50%,-50%);
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.04em;
  color:var(--ink);padding:8px 12px;border:1px solid var(--line-hi);
  border-radius:6px;background:color-mix(in srgb,var(--paper) 90%,transparent);
  white-space:nowrap;z-index:3;font-weight:500;
}
.db-node.dn0{left:50%;top:48%}
.db-node.dn1{left:12%;top:20%}
.db-node.dn2{left:24%;top:78%}
.db-node.dn3{left:10%;top:68%}
.db-node.dn4{left:26%;top:38%}
.db-node.dn5{left:14%;top:50%}
.db-node.dn6{left:86%;top:24%}
.db-node.dn7{left:88%;top:60%}
.db-node.dn8{left:76%;top:82%}
.db-node.core{
  background:var(--red);color:var(--panel);border-color:var(--red);
  font-weight:600;font-size:13px;letter-spacing:.1em;
}
.vdbe h2{font-size:clamp(28px,5vw,56px);margin:16px 0 22px}
.vdbe .lede{margin-bottom:26px}
.db-side-label{
  position:absolute;font-family:var(--font-mono);font-size:10px;letter-spacing:.16em;
  color:var(--muted);text-transform:uppercase;z-index:4;
}
.db-side-label.lang{top:6%;left:8%}
.db-side-label.cloud{bottom:6%;right:8%}

/* ============================================================
   VSCC
   ============================================================ */
.vscc{background:var(--panel);border-block:1px solid var(--line)}
.vscc h2{font-size:clamp(28px,5.4vw,60px);margin:16px 0 22px}
.vscc .lede{margin-bottom:30px;max-width:52ch}
.vscc .vme__note{margin-bottom:18px}
.vscc__cols{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,4vw,50px);align-items:start}
@media(max-width:840px){.vscc__cols{grid-template-columns:1fr}}
.vscc__demo{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--panel2)}
.vscc__demo .demo-in{
  padding:20px;border-bottom:1px solid var(--line);
  font-family:var(--font-mono);font-size:12.5px;color:var(--ink);
  overflow-x:auto;white-space:pre;line-height:1.6;
}
.vscc__run{
  display:flex;justify-content:center;padding:18px;
}
.run-btn{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;
  background:var(--ink);color:var(--paper);border:0;padding:13px 26px;
  border-radius:8px;text-transform:uppercase;transition:background .3s,transform .3s var(--ease);
}
.run-btn:hover{background:var(--red)}
.run-btn:disabled{opacity:.5;cursor:wait}
.vscc__receipt{
  font-family:var(--font-mono);font-size:12px;padding:18px 22px;
}
.vscc__receipt .row{display:flex;justify-content:space-between;gap:14px;padding:8px 0;border-bottom:1px dashed var(--line)}
.vscc__receipt .row .k{color:var(--muted)}
.vscc__receipt .row .v{color:var(--ink)}
.vscc__receipt .row.total .v{color:var(--lime);font-weight:500}
.vscc__receipt .caption{margin-top:12px}

/* ============================================================
   RESEARCH GRAPHS
   ============================================================ */
.research h2{font-size:clamp(28px,5vw,58px);margin:16px 0 12px}
.research .lede{margin-bottom:40px}
.graph-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px}
.graph-card{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--panel2)}
.graph-card .g-head{padding:18px 20px 6px}
.graph-card .g-head .num{font-family:var(--font-mono);font-size:11px;color:var(--red);letter-spacing:.14em}
.graph-card .g-head h3{font-size:17px;margin:6px 0 10px;letter-spacing:0}
.graph-card canvas{width:100%;height:200px;display:block}
.graph-card .g-legend{
  padding:10px 20px 16px;display:flex;flex-wrap:wrap;gap:14px;
  font-family:var(--font-mono);font-size:10.5px;color:var(--muted);letter-spacing:.04em;
}
.graph-card .g-legend .sw{width:10px;height:10px;border-radius:2px;display:inline-block;margin-right:6px;vertical-align:middle}
.graph-card .g-legend .sw.l-source{background:var(--muted)}
.graph-card .g-legend .sw.l-sem{background:var(--blue)}
.graph-card .g-legend .sw.l-res{background:var(--red)}
.graph-card .g-legend .sw.l-raw{background:var(--muted)}
.graph-card .g-legend .sw.l-norm{background:var(--lime)}
.graph-card .g-legend .sw.l-fp{background:var(--blue)}
.graph-card .g-legend .sw.l-low{background:var(--lime)}
.graph-card .g-legend .sw.l-con{background:var(--red)}
.graph-card .g-legend .sw.l-flow{background:var(--blue)}
.graph-card .g-note{padding:0 20px 18px;font-size:12.5px;color:var(--muted);font-weight:300}

/* ============================================================
   TABLE
   ============================================================ */
.table-sec h2{font-size:clamp(26px,4.6vw,50px);margin:16px 0 40px}
.table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:12px}
table{width:100%;border-collapse:collapse;min-width:680px;background:var(--panel2)}
caption{
  caption-side:top;text-align:left;font-family:var(--font-mono);
  font-size:11px;letter-spacing:.1em;color:var(--muted);padding:0 0 12px;
}
thead th{
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;
  text-align:left;color:var(--muted);padding:14px 18px;border-bottom:1px solid var(--line-hi);
  background:var(--panel);
}
tbody td{padding:13px 18px;border-bottom:1px solid var(--line);font-size:14px;color:var(--ink)}
tbody tr:last-child td{border-bottom:0}
tbody tr:hover{background:color-mix(in srgb,var(--focus) 5%,transparent)}
.table-scroll th{white-space:nowrap}
.status-pill{
  display:inline-block;font-family:var(--font-mono);font-size:10.5px;letter-spacing:.08em;
  padding:4px 10px;border-radius:999px;text-transform:uppercase;white-space:nowrap;
}
.status-pill.beta{border:1px solid var(--lime);color:var(--lime)}
.status-pill.dev{border:1px solid var(--red);color:var(--red)}
[data-theme="light"] .status-pill.beta{color:#5c7c00;border-color:#5c7c00}
[data-theme="light"] .status-pill.dev{color:#c22f18;border-color:#c22f18}
.runtime-note{color:var(--muted);font-weight:300}

/* ============================================================
   MODULES INDEX
   ============================================================ */
.modules{background:var(--panel);border-block:1px solid var(--line)}
.modules h2{font-size:clamp(28px,5vw,58px);margin:16px 0 40px}
.module-row{
  display:grid;grid-template-columns:minmax(120px,180px) 1fr;
  gap:clamp(14px,3vw,40px);padding:22px 8px;border-top:1px solid var(--line);
  align-items:baseline;transition:transform .28s var(--ease),background .28s;
  text-decoration:none;color:inherit;
}
@media(max-width:600px){.module-row{grid-template-columns:1fr;gap:8px;padding:20px 4px}}
.module-row:hover{transform:translateX(8px);background:color-mix(in srgb,var(--focus) 4%,transparent)}
.module-row .num{font-family:var(--font-mono);font-size:12px;color:var(--red);letter-spacing:.14em}
.module-row h3{font-size:clamp(19px,3vw,26px);margin-bottom:6px}
.module-row .mono-sub{font-family:var(--font-mono);font-size:11px;color:var(--blue);letter-spacing:.08em;text-transform:uppercase;display:block;margin-bottom:6px}
.module-row p{color:var(--muted);font-weight:300;font-size:15px;max-width:62ch}

/* ============================================================
   ABOUT / MANIFESTO
   ============================================================ */
.about h2{font-size:clamp(28px,5vw,58px);margin:16px 0 clamp(26px,4vw,44px)}
.about__body{
  max-width:76ch;display:grid;gap:20px;
  font-size:clamp(16px,2vw,19px);font-weight:300;color:var(--muted);line-height:1.7;
}
.about__body strong{color:var(--ink);font-weight:500}

/* ============================================================
   FAQ
   ============================================================ */
.faq h2{font-size:clamp(28px,5vw,58px);margin:16px 0 clamp(26px,4vw,44px)}
.faq__list{max-width:820px;display:grid}
.faq__item{border-bottom:1px solid var(--line)}
.faq__item:first-child{border-top:1px solid var(--line)}
.faq__item summary{
  cursor:pointer;list-style:none;padding:20px 4px;
  font-size:clamp(16px,2vw,20px);font-weight:500;color:var(--ink);
  display:flex;justify-content:space-between;align-items:center;gap:18px;
  transition:color .25s;
}
.faq__item summary::-webkit-details-marker{display:none}
.faq__item summary::after{
  content:"+";font-family:var(--font-mono);font-size:18px;color:var(--red);
  transition:transform .3s var(--ease);
}
.faq__item[open] summary::after{transform:rotate(45deg)}
.faq__item summary:hover,
.faq__item[open] summary{color:var(--red)}
.faq__item p{
  color:var(--muted);font-weight:300;font-size:15px;line-height:1.6;max-width:68ch;
  padding:0 4px 22px;
}
.faq__item a{color:var(--blue);text-decoration:none}
.faq__item a:hover{text-decoration:underline}

/* ============================================================
   FINAL CTA
   ============================================================ */
.final{text-align:center}
.final .f-label{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;color:var(--muted);text-transform:uppercase;margin-bottom:26px;
}
.final h2{
  font-size:clamp(34px,8vw,92px);line-height:1.02;
}
.final h2 .warm{
  background:var(--red);color:var(--paper);padding:0 .14em;border-radius:4px;
  display:inline-block;
}
.final .support{
  max-width:54ch;margin:26px auto 0;color:var(--muted);font-weight:300;font-size:15.5px;
}
.final .support em{color:var(--ink);font-style:normal}

/* ============================================================
   FOOTER
   ============================================================ */
footer{border-top:1px solid var(--line);padding:60px 0 44px;background:var(--paper)}
.footer-top{display:flex;flex-wrap:wrap;gap:26px;align-items:flex-start;justify-content:space-between;margin-bottom:44px}
.footer-brand{font-size:clamp(60px,14vw,150px);font-weight:900;letter-spacing:-.02em;line-height:.9;color:var(--ink)}
.footer-tech{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;color:var(--muted);
  line-height:1.9;text-transform:uppercase;
}
.footer-tech .yr{color:var(--red)}
.footer-social{
  display:flex;flex-direction:column;gap:10px;
}
.footer-social a{
  font-family:var(--font-mono);font-size:12px;color:var(--muted);text-decoration:none;letter-spacing:.06em;
  transition:color .25s;
}
.footer-social a:hover{color:var(--red)}
.footer-bottom{border-top:1px solid var(--line);padding-top:20px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-family:var(--font-mono);font-size:10.5px;letter-spacing:.08em;color:var(--muted)}

/* content-visibility for offscreen perf (vscc/footer stay always-rendered so
   assistive tech + Lighthouse measure their real computed styles) */
.intro,.vme,.avm,.lang,.vsl,.c4,.mesh,.vdbe,.research,.table-sec,.modules,.about,.faq,.final{
  content-visibility:auto;contain-intrinsic-size:auto 900px;
}