/* ============================================================================
   FRAME — shared identity (reserved Japanese). Restyles the existing class
   vocabulary so every content page adopts the new look. Dark-first; belt drives
   --accent. Saira / Saira Condensed / Space Mono. 2026-08.
   ========================================================================== */
@font-face{font-family:"Saira";src:url(fonts/saira-500.woff2) format("woff2");font-weight:500;font-display:swap}
@font-face{font-family:"Saira";src:url(fonts/saira-700.woff2) format("woff2");font-weight:700;font-display:swap}
@font-face{font-family:"Saira Condensed";src:url(fonts/saira-cond-700.woff2) format("woff2");font-weight:700;font-display:swap}
@font-face{font-family:"Space Mono";src:url(fonts/space-mono-400.woff2) format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"Space Mono";src:url(fonts/space-mono-700.woff2) format("woff2");font-weight:700;font-display:swap}
@font-face{font-family:"Saira Stencil";src:url(fonts/saira-stencil-400.woff2) format("woff2");font-weight:400;font-display:swap}

:root{
  color-scheme:dark;
  --ink:#0F1013;--surf:#171A1F;--rai:#20242B;--line:#2B2F37;--line2:#3E434C;
  --tx:#E9EAEC;--tx2:#9A9CA2;--tx3:#7C818B;
  --accent:#8977B0;--acci:#0B0710;
  --sans:"Saira",system-ui,-apple-system,sans-serif;--disp:"Saira Condensed","Saira",sans-serif;
  --mono:"Space Mono",ui-monospace,Menlo,monospace;
  --e:cubic-bezier(.22,1,.36,1);--edge:clamp(1.25rem,5vw,5rem);
  --scan:rgba(255,255,255,.018);
  --clip:polygon(0 0,calc(100% - 14px) 0,100% 14px,100% 100%,14px 100%,0 calc(100% - 14px));
  /* legacy token aliases used inline on some pages */
  --text-primary:var(--tx);--text-secondary:var(--tx2);--text-tertiary:var(--tx3);
  --border-subtle:var(--line);--border-strong:var(--line2);--surface:var(--surf);--raised:var(--rai);
  --ink-on-accent:var(--acci);--ease:var(--e);--mono:"Space Mono",monospace;
  --r-card:0px;--r-button:0px;--r-pill:999px;
}
:root[data-belt="white"]{--accent:#DCD3B8;--acci:#1c1a0c}
:root[data-belt="blue"]{--accent:#5C82AA;--acci:#04101f}
:root[data-belt="purple"]{--accent:#8977B0;--acci:#0B0710}
:root[data-belt="brown"]{--accent:#9E6A38;--acci:#170d02}
:root[data-belt="coral"]{--accent:#CE5A4B;--acci:#1e0402}
:root[data-belt="black"]{--ink:#E7E5DE;--surf:#DEDBD1;--rai:#D2CFC3;--line:#C7C3B6;--line2:#B0AC9C;--tx:#17181C;--tx2:#53545A;--tx3:#7C7C80;--accent:#524475;--acci:#E7E5DE}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;background:var(--ink)}
body{margin:0;background:var(--ink);color:var(--tx);font-family:var(--sans);font-weight:400;line-height:1.6;font-size:1.0625rem;letter-spacing:-.003em;-webkit-font-smoothing:antialiased;overflow-x:hidden;
  background-image:repeating-linear-gradient(0deg,var(--scan) 0 1px,transparent 1px 3px)}
::selection{background:var(--accent);color:var(--acci)}
a{color:inherit}img,svg{display:block;max-width:100%}
.wrap{max-width:74rem;margin:0 auto;padding-inline:var(--edge)}
.mono{font-family:var(--mono)}
.accent{color:var(--accent)}
.skip{position:absolute;left:-999px}.skip:focus{left:1rem;top:1rem;z-index:99;background:var(--accent);color:var(--acci);padding:.5rem .8rem}
a:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.reveal{opacity:1!important;transform:none!important}

/* ---- topbar ---- */
.topbar{position:sticky;top:0;z-index:40;display:flex;align-items:center;gap:1rem;min-height:60px;padding-inline:var(--edge);background:color-mix(in srgb,var(--ink) 84%,transparent);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.topbar__mark{font-family:var(--disp);font-weight:700;font-size:1.3rem;letter-spacing:.02em;text-transform:uppercase;text-decoration:none;color:var(--tx);margin-right:auto}
.topbar__right{display:flex;align-items:center;gap:1.3rem}
.topbar__link{font-family:var(--mono);font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;color:var(--tx2);text-decoration:none}
.topbar__link:hover{color:var(--tx)}
.theme-toggle{display:none!important}
@media(max-width:680px){.topbar__right{gap:.9rem}.topbar__link{font-size:.58rem;letter-spacing:.08em}}

/* ---- sections ---- */
.band,section.band{padding-block:clamp(4rem,9vw,8rem);border-top:1px solid var(--line);position:relative}
.band--tight{padding-block:clamp(2.5rem,5vw,4rem)}
.band::before{content:"";position:absolute;top:-1px;left:0;right:0;height:3px;
  background:repeating-linear-gradient(-45deg,var(--accent) 0 8px,transparent 8px 16px);opacity:.55}

/* ---- industrial devices (shared with index.html / academies.html) ---- */
.hz{height:20px;background:repeating-linear-gradient(-45deg,var(--accent) 0 12px,transparent 12px 24px);opacity:.85}
.hzrow{display:flex;align-items:center;gap:1rem;border-block:1px solid var(--line)}
.hzrow .t{font-family:"Saira Stencil","Saira",sans-serif;font-size:.56rem;letter-spacing:.22em;text-transform:uppercase;color:var(--tx3);white-space:nowrap;padding-inline:var(--edge)}
.hzrow .hz{flex:1}
.stamp{display:inline-flex;align-items:center;gap:.4rem;border:2px solid var(--accent);color:var(--accent);font-family:"Saira Stencil","Saira",sans-serif;text-transform:uppercase;letter-spacing:.1em;font-size:.6rem;padding:.35rem .65rem;border-radius:4px;transform:rotate(-4deg)}

/* ---- hero ---- */
.hero{padding-block:clamp(3rem,7vw,5.5rem) clamp(3.5rem,7vw,6rem);border-top:none}
.hero__lead{max-width:46rem}
.hero__grid{display:grid;grid-template-columns:1.3fr .7fr;gap:clamp(2rem,5vw,4rem);align-items:end}
@media(max-width:820px){.hero__grid{grid-template-columns:1fr;gap:2rem}}
.wordmark-frame{margin:1rem 0}
.wordmark{font-family:var(--disp);font-weight:700;font-size:clamp(3.5rem,2rem + 12vw,11rem);line-height:.9;letter-spacing:-.01em;margin:0;text-transform:uppercase}
.eyebrow{font-family:var(--mono);font-size:.66rem;letter-spacing:.22em;text-transform:uppercase;color:var(--tx3);margin:0}
.thesis{font-family:var(--sans);font-weight:700;font-size:clamp(1.9rem,1.3rem + 3vw,3.4rem);letter-spacing:-.02em;line-height:1.06;margin:1.2rem 0 1.2rem;text-wrap:balance}
.thesis .accent{color:var(--accent)}
.strapline{max-width:52ch;color:var(--tx2);font-size:clamp(1.05rem,1rem+.4vw,1.2rem);margin:0 0 2rem}
.hero__cta{display:flex;align-items:center;flex-wrap:wrap;gap:.6rem 1rem}
.hero__cta-note{font-family:var(--mono);font-size:.66rem;letter-spacing:.06em;text-transform:uppercase;color:var(--tx3)}
.hero__demo{margin-top:2rem}

/* ---- headings / prose ---- */
.rail{font-family:var(--mono);font-size:.66rem;letter-spacing:.2em;text-transform:uppercase;color:var(--tx3);margin:0 0 1rem}
.section-title{font-family:var(--sans);font-weight:700;font-size:clamp(1.7rem,1.2rem + 2vw,2.7rem);letter-spacing:-.02em;line-height:1.06;margin:0 0 1.4rem;text-wrap:balance}
.prose{max-width:62ch}
.prose p,.muted{color:var(--tx2);font-size:1.0625rem;line-height:1.65;margin:0 0 1.1rem}
.muted strong,.prose strong{color:var(--tx);font-weight:700}
.prose em,.muted em{font-style:italic;color:var(--tx)}
.prose a,.muted a{color:var(--accent);text-decoration:none;border-bottom:1px solid color-mix(in srgb,var(--accent) 40%,transparent)}
.lede{max-width:46ch;color:var(--tx2);font-size:clamp(1.1rem,1rem+.6vw,1.35rem);line-height:1.5}

/* ---- cta ---- */
.cta{display:inline-flex;align-items:center;gap:.6rem;background:var(--accent);color:var(--acci);font-family:var(--sans);font-weight:700;text-transform:uppercase;letter-spacing:.02em;font-size:.9rem;padding:.85rem 1.4rem;text-decoration:none;border:none;cursor:pointer;transition:transform .2s var(--e)}
.cta:hover{transform:translateY(-2px)}

/* ---- cards ---- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);margin-top:clamp(1.6rem,3vw,2.4rem)}
.cards--2{grid-template-columns:repeat(2,1fr)}.cards--3{grid-template-columns:repeat(3,1fr)}
@media(max-width:760px){.cards,.cards--2,.cards--3{grid-template-columns:1fr}}
.cardlet{background:var(--ink);clip-path:var(--clip,none);padding:clamp(1.5rem,3vw,2.2rem);text-decoration:none;color:inherit;display:block}
.cardlet h3{font-family:var(--sans);font-weight:700;font-size:1.15rem;margin:0 0 .6rem;letter-spacing:-.01em}
.cardlet p{margin:0;font-size:.92rem;color:var(--tx2);line-height:1.55}
a.cardlet:hover{background:var(--surf)}
.card{background:var(--surf);border:1px solid var(--line);padding:clamp(1.4rem,3vw,2rem)}

/* ---- stats ---- */
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);margin-top:clamp(1.6rem,3vw,2.4rem)}
@media(max-width:640px){.stat-row{grid-template-columns:1fr}}
.stat-tile{background:var(--ink);clip-path:var(--clip,none);padding:clamp(1.5rem,3vw,2.2rem)}
.stat-tile__num{display:block;font-family:var(--disp);font-weight:700;font-size:clamp(2.4rem,1.8rem+2vw,3.4rem);color:var(--accent);line-height:1}
.stat-tile__label{display:block;color:var(--tx2);font-size:.9rem;margin-top:.6rem;max-width:24ch}
.stat-row__note{font-family:var(--mono);font-size:.62rem;letter-spacing:.1em;text-transform:uppercase;color:var(--tx3);margin-top:1rem}

/* ---- forms ---- */
.field{display:flex;flex-direction:column;gap:.4rem}
.field__label{font-family:var(--mono);font-size:.6rem;letter-spacing:.14em;text-transform:uppercase;color:var(--tx3)}
.field__input{background:var(--surf);border:1px solid var(--line);color:var(--tx);font-family:var(--sans);font-size:1rem;padding:.75rem .85rem}
.field__input:focus{outline:2px solid var(--accent);outline-offset:1px}

/* ---- belt picker (kids etc.) ---- */
.belt{display:inline-flex;align-items:center;gap:.5rem;background:var(--surf);border:1px solid var(--line);color:var(--tx2);font-family:var(--mono);font-size:.64rem;letter-spacing:.1em;text-transform:uppercase;padding:.55rem .8rem;cursor:pointer}
.belt:hover{border-color:var(--line2);color:var(--tx)}
.belt__chip{width:13px;height:13px;background:var(--swatch,var(--accent));display:block}
.belt__name{font-family:var(--mono)}

/* ---- article ---- */
.article{max-width:44rem;margin:0 auto;padding-block:clamp(3rem,6vw,5rem)}
.article__meta{font-family:var(--mono);font-size:.64rem;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);margin:0 0 1.2rem}
.article h1{font-family:var(--disp);font-weight:700;font-size:clamp(2rem,1.4rem+3vw,3.2rem);line-height:1.05;letter-spacing:-.01em;margin:0 0 1.6rem;text-transform:uppercase;text-wrap:balance}
.article h2{font-family:var(--sans);font-weight:700;font-size:clamp(1.4rem,1.1rem+1.2vw,1.9rem);letter-spacing:-.01em;margin:2.4rem 0 1rem}
.article p{color:var(--tx2);font-size:1.0625rem;line-height:1.7;margin:0 0 1.2rem}
.article strong{color:var(--tx)}.article em{font-style:italic;color:var(--tx)}
.article ul,.article ol{color:var(--tx2);line-height:1.7;padding-left:1.2rem;margin:0 0 1.2rem}
.article li{margin-bottom:.5rem}.article li::marker{color:var(--accent)}
.article a{color:var(--accent);text-decoration:none;border-bottom:1px solid color-mix(in srgb,var(--accent) 40%,transparent)}
.article__foot{margin-top:2.5rem;padding-top:1.4rem;border-top:1px solid var(--line)}
.article__back{font-family:var(--mono);font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;color:var(--tx2);text-decoration:none}
.article__back:hover{color:var(--tx)}

/* ---- doc (privacy / terms) ---- */
.doc{max-width:44rem;margin:0 auto;padding-block:clamp(3rem,6vw,5rem)}
.doc h1{font-family:var(--disp);font-weight:700;font-size:clamp(1.8rem,1.4rem+2vw,2.6rem);text-transform:uppercase;letter-spacing:-.01em;margin:0 0 1rem}
.doc h2{font-family:var(--sans);font-weight:700;font-size:1.25rem;margin:2rem 0 .8rem}
.doc p,.doc li{color:var(--tx2);line-height:1.7;margin:0 0 1rem}
.doc a{color:var(--accent);text-decoration:none;border-bottom:1px solid color-mix(in srgb,var(--accent) 40%,transparent)}
.doc__stamp{font-family:var(--mono);font-size:.64rem;letter-spacing:.14em;text-transform:uppercase;color:var(--tx3);margin:0 0 1.5rem}
.doc__list{padding-left:1.2rem}.doc__list li::marker{color:var(--accent)}
.doc__foot{margin-top:2.5rem;padding-top:1.4rem;border-top:1px solid var(--line);font-family:var(--mono);font-size:.64rem;letter-spacing:.1em;text-transform:uppercase;color:var(--tx3)}

/* ---- library ---- */
.lib__group{margin-bottom:clamp(2rem,4vw,3rem)}
.lib__list{display:grid;gap:1px;background:var(--line);border:1px solid var(--line)}
.lib__pos{background:var(--surf);padding:1rem 1.2rem;position:sticky;top:60px;z-index:2}
.lib__pos-head{display:flex;align-items:baseline;justify-content:space-between;gap:1rem}
.lib__pos-name{font-family:var(--sans);font-weight:700;font-size:1.15rem;letter-spacing:-.01em;text-transform:uppercase}
.lib__pos-count{font-family:var(--mono);font-size:.62rem;letter-spacing:.12em;text-transform:uppercase;color:var(--tx3)}
.lib__tech{background:var(--ink);padding:1rem 1.2rem;border-top:1px solid var(--line)}
.lib__tech-head{display:flex;align-items:baseline;justify-content:space-between;gap:1rem;flex-wrap:wrap}
.lib__tech-name{font-family:var(--sans);font-weight:500;font-size:1.05rem;letter-spacing:-.01em}
.lib__note{color:var(--tx2);font-size:.9rem;line-height:1.5;margin:.5rem 0 0;max-width:60ch}
.lib__tags{display:flex;gap:.4rem;flex-wrap:wrap}
.lib__tag{font-family:var(--mono);font-size:.58rem;letter-spacing:.08em;text-transform:uppercase;color:var(--tx3);border:1px solid var(--line);padding:.2rem .5rem;white-space:nowrap}
.lib__tag--type{color:var(--tx2)}
.lib__tag--lvl{color:var(--accent);border-color:color-mix(in srgb,var(--accent) 45%,transparent)}
.lib__tag--gi{color:var(--tx3)}
.lvl-beginner{--lvl:#5C82AA}.lvl-intermediate{--lvl:#8977B0}.lvl-advanced{--lvl:#CE5A4B}
.lib__tag--lvl.lvl-beginner,.lib__tag--lvl.lvl-intermediate,.lib__tag--lvl.lvl-advanced{color:var(--lvl);border-color:color-mix(in srgb,var(--lvl) 45%,transparent)}

/* ---- footer ---- */
footer{border-top:1px solid var(--line);padding-block:clamp(3rem,6vw,5rem);padding-inline:var(--edge)}
footer .wrap{display:flex;justify-content:space-between;gap:1.5rem 2rem;flex-wrap:wrap;align-items:flex-end;padding-inline:0}
footer span{font-family:var(--mono);font-size:.62rem;letter-spacing:.08em;text-transform:uppercase;color:var(--tx3)}
footer nav{display:flex;gap:1.1rem;flex-wrap:wrap}
footer nav a{font-family:var(--mono);font-size:.62rem;letter-spacing:.1em;text-transform:uppercase;color:var(--tx3);text-decoration:none}
footer nav a:hover{color:var(--tx)}
.footer__stitch{flex-basis:100%;font-family:var(--mono);font-size:.72rem!important;letter-spacing:.06em!important;text-transform:none!important;color:var(--tx2)!important;line-height:1.6;max-width:56ch;margin:0 0 1.5rem}
.footer__stitch a{color:var(--tx);text-decoration:none;border-bottom:1px solid var(--accent)}

@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}