/* Self-hosted brand fonts; paths are root-relative because this file is served from /. */
@font-face{font-family:'Geist Sans';src:url('/assets/fonts/geist-sans/Geist-Regular.woff2') format('woff2');font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:'Geist Sans';src:url('/assets/fonts/geist-sans/Geist-Medium.woff2') format('woff2');font-weight:500;font-style:normal;font-display:swap}
@font-face{font-family:'Geist Sans';src:url('/assets/fonts/geist-sans/Geist-SemiBold.woff2') format('woff2');font-weight:600;font-style:normal;font-display:swap}
@font-face{font-family:'Geist Mono';src:url('/assets/fonts/geist-mono/GeistMono-Regular.woff2') format('woff2');font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:'Geist Pixel Circle';src:url('/assets/fonts/geist-pixel/GeistPixel-Circle.woff2') format('woff2');font-weight:600;font-style:normal;font-display:swap}

/* Page shell: nav, mobile drawer and footer chrome. */
:root{
  /* Color */
  --bg-elevated:#151516; --card:#191919;
  --frame:#0d0d0d; --inner:#111111;
  --foreground:#f6f3ec; --text-secondary:#c2beb4; --muted-foreground:#94908a;
  --border-strong:rgba(246,243,236,.17);
  --primary:#3b63f7; --accent-hover:#2563eb; --primary-foreground:#fff; --accent-soft:rgba(59,99,247,.16);
  --success:#7dd88f;

  /* Grid canvas lines */
  --grid-minor:rgba(246,243,236,.03);
  --grid-major:rgba(246,243,236,.065);

  /* Display scale — fluid clamp */
  --lh-display:1.0; --ls-display:-2px; --fw-display:500;
  --lh-h2:1.0; --ls-h2:-1.6px; --fw-h2:500;
  --lh-h3:1.05; --ls-h3:-1px; --fw-h3:500;
  --lh-h4:1.25; --ls-h4:-.4px; --fw-h4:500;
  --lh-h5:1.3; --ls-h5:-.2px; --fw-h5:500;
  --lh-body-lg:28px;
  --lh-body:20px;
  --ls-label:.14em;

  /* Spacing (8px base) */
  --space-1:4px; --space-2:8px; --space-3:12px; --space-4:16px; --space-5:24px;
  --space-7:48px; --space-8:64px; --space-9:96px; --space-10:128px; --space-11:160px;
  --section-y-tight:clamp(48px,5.5vw,80px);  /* short sections (quote, final CTA) */

  /* Radius */
  --r-sm:12px; --r-md:16px; --r-lg:20px; --r-xl:24px; --r-pill:999px;
  --r-btn:8px;

  --container-narrow:760px;

  /* Elevation */
  --shadow-1:0 8px 24px rgba(0,0,0,.18),0 2px 8px rgba(0,0,0,.12);
  --shadow-2:0 24px 60px rgba(0,0,0,.32),0 8px 24px rgba(0,0,0,.18);
  --shadow-3:0 40px 100px rgba(0,0,0,.42),0 12px 36px rgba(0,0,0,.22);

  /* Motion — expressive curve (marketing), matches tokens.css --ease-expressive */
  --dur:600ms; --dur-fast:220ms;

  /* z-scale */
  --z-footer:0; --z-content:1; --z-nav:80; --z-menu:70;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--background);color:var(--foreground);font-family:var(--font-sans);
  font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
body::before{content:"";position:fixed;inset:0;z-index:61;pointer-events:none;opacity:.02;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
/* Plain surface; section borders carry the structure. */
.grid-surface{position:relative}
.btn{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:10px;border-radius:var(--r-btn);
  font-size:14px;line-height:1.5;font-weight:600;letter-spacing:-.01em;cursor:pointer;border:1px solid transparent;
  transition:transform var(--dur-fast) var(--ease-expressive),background var(--dur-fast) var(--ease-expressive),border-color var(--dur-fast) var(--ease-expressive);
  overflow:hidden;isolation:isolate}
.btn:active{transform:scale(.97)}
.btn .ic{display:none}
.btn.primary{background:var(--primary);color:var(--primary-foreground)}
.btn.primary:hover{background:var(--accent-hover)}
.btn.primary::after{content:"";position:absolute;top:0;left:-60%;width:40%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.5),transparent);
  transform:skewX(-20deg);animation:btn-shine 3.6s ease-in-out infinite;pointer-events:none;z-index:0}
.btn.block{width:100%}
.nav-outer{position:fixed;top:0;left:0;right:0;z-index:var(--z-nav);display:flex;justify-content:center;padding:22px 16px;pointer-events:none}
.nav{pointer-events:auto;display:flex;align-items:center;gap:20px;width:var(--container);max-width:1180px;
  padding:10px 12px 10px 20px;border-radius:var(--r-md);border:1px solid var(--border);
  background:rgba(13,13,14,.72);backdrop-filter:blur(18px) saturate(1.4);-webkit-backdrop-filter:blur(18px) saturate(1.4);box-shadow:var(--shadow-1)}
.nav-brand{display:flex;align-items:center;gap:9px;margin-right:auto}
.nav-brand .brand-mark{display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;width:26px;height:26px;background:#fff;border-radius:6px}
.nav-brand .brand-logo{width:100%;height:100%;display:block;object-fit:contain}
.nav-brand .brand-name{font-family:var(--font-decorative);font-size:17px;font-weight:600;letter-spacing:.02em;text-transform:uppercase;line-height:1}
.nav-menu{display:flex;align-items:center;gap:4px}
.nav-item{position:relative}
.nav-trigger{display:inline-flex;align-items:center;gap:6px;padding:9px 14px;border-radius:var(--r-btn);
  background:none;border:0;color:var(--muted-foreground);font-size:14px;font-weight:500;cursor:pointer;
  transition:color var(--dur-fast) var(--ease-expressive),background var(--dur-fast) var(--ease-expressive)}
.nav-trigger .chev{width:12px;height:12px;transition:transform var(--dur-fast) var(--ease-expressive)}
.dropdown{position:absolute;top:calc(100% + 12px);left:50%;transform:translateX(-50%) translateY(6px);
  min-width:300px;padding:8px;border-radius:var(--r-lg);border:1px solid var(--border);
  background:#0d0d0e;backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);box-shadow:var(--shadow-2);
  opacity:0;visibility:hidden;pointer-events:none;transition:opacity var(--dur-fast) var(--ease-expressive),transform var(--dur-fast) var(--ease-expressive),visibility var(--dur-fast) var(--ease-expressive)}
.nav-item::after{content:"";position:absolute;left:0;right:0;top:100%;height:14px}
.dropdown.wide{min-width:340px}
/* Open state: these only apply once JS adds .open, so they must be declared explicitly. */
.nav-item.open .nav-trigger{color:var(--foreground);background:rgba(246,243,236,.05)}
.nav-item.open .nav-trigger .chev{transform:rotate(180deg)}
.nav-item.open .dropdown{opacity:1;visibility:visible;pointer-events:auto;transform:translateX(-50%) translateY(0)}
.dd-head{font-family:var(--font-mono);font-size:10px;text-transform:uppercase;letter-spacing:.14em;color:var(--muted-foreground);padding:10px 12px 6px}
.dd-item{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;padding:12px 12px;border-radius:var(--r-md);
  transition:background var(--dur-fast) var(--ease-expressive)}
.dd-item:hover{background:rgba(246,243,236,.05)}
.dd-item .dd-body{display:flex;flex-direction:column;gap:4px;min-width:0}
.dd-item .dd-t{font-size:14px;font-weight:500;color:var(--foreground);line-height:1.3}
.dd-item .dd-d{font-size:12.5px;line-height:1.45;color:var(--muted-foreground);max-width:32ch}
.dd-item .dd-status{flex:none;font-family:var(--font-mono);font-size:9px;text-transform:uppercase;letter-spacing:.1em;
  color:var(--muted-foreground);padding-top:2px;white-space:nowrap}
.dd-item .dd-status.now{color:var(--success)}
.nav-actions{display:flex;align-items:center;gap:6px}
.nav .btn{padding:11px 14px 11px 18px;font-size:13.5px}
.nav-burger{display:none;width:40px;height:40px;border-radius:var(--r-pill);border:1px solid var(--border);
  background:var(--bg-elevated);position:relative;cursor:pointer}
.nav-burger span{position:absolute;left:11px;right:11px;height:1.5px;background:var(--foreground);
  transition:transform var(--dur-fast) var(--ease-expressive),opacity var(--dur-fast) var(--ease-expressive)}
.nav-burger span:nth-child(1){top:15px}
.nav-burger span:nth-child(2){top:23px}
body.menu-open .nav-burger span:nth-child(1){transform:translateY(8px) rotate(45deg)}
body.menu-open .nav-burger span:nth-child(2){transform:translateY(0) rotate(-45deg)}
.menu{position:fixed;inset:0;z-index:var(--z-menu);display:flex;flex-direction:column;padding:92px 20px 28px;overflow-y:auto;
  background:rgba(9,9,9,.94);backdrop-filter:blur(28px);-webkit-backdrop-filter:blur(28px);
  opacity:0;visibility:hidden;transition:opacity var(--dur-fast) var(--ease-expressive),visibility var(--dur-fast) var(--ease-expressive)}
body.menu-open .menu{opacity:1;visibility:visible}
.m-acc{border-bottom:1px solid var(--border)}
.m-acc-t{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 4px;
  background:none;border:0;color:var(--foreground);font-size:19px;font-weight:500;letter-spacing:-.02em;cursor:pointer}
.m-acc-t .chev{width:16px;height:16px;color:var(--muted-foreground);transition:transform var(--dur-fast) var(--ease-expressive)}
/* Accordion open state — JS-toggled, so not reachable by selector matching. */
.m-acc.open .m-acc-t .chev{transform:rotate(180deg)}
/* 0fr→1fr animates the track, not the box */
.m-acc-body{display:grid;grid-template-rows:0fr;transition:grid-template-rows var(--dur-fast) var(--ease-expressive)}
.m-acc.open .m-acc-body{grid-template-rows:1fr}
/* .inner is the sizing element and must stay unpadded, or the row can't reach zero; .m-acc-list carries the padding */
.m-acc-body .inner{min-height:0;overflow:hidden}
.m-acc-body .m-acc-list{padding:0 4px 18px;display:flex;flex-direction:column;gap:18px}
.m-link{display:block;margin:0 4px}
.m-acc-body .inner > .m-link + .m-link{margin-top:18px}
.m-acc-body .inner > .m-link:last-child{margin-bottom:18px}
.m-link .mt{font-size:15px;font-weight:500;color:var(--foreground)}
.m-link .md{font-size:12.5px;color:var(--muted-foreground);margin-top:2px}
.m-foot{margin-top:24px;display:flex;flex-direction:column;gap:14px}
.site-shell{position:relative;z-index:var(--z-content)}
.main-content{position:relative;z-index:var(--z-content);background:var(--background)}
/* Edge-to-edge page, so the nav uses the app band's gutters, not the site container. */
body.rt-page .nav{width:100%;max-width:none;border-radius:0;border:0;
  background:transparent;backdrop-filter:none;-webkit-backdrop-filter:none;
  box-shadow:none;padding:10px 32px;margin:0}
body.rt-page .nav-outer{padding:0;background:rgba(9,9,9,.85);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border);justify-content:stretch}
body.rt-page .site-shell{padding-top:84px}
@media (max-width:900px){
  .nav-menu,.nav-actions{display:none}
  .nav-burger{display:block}
  .nav{gap:12px}
}
@media (max-width:900px) and (min-width:641px){
  :root{
    --grid-minor:rgba(246,243,236,.025);
    --section-y-tight:clamp(40px,5vw,56px);
  }
  :root:not(:has(body.docs-page)){--section-y:clamp(56px,7vw,80px)}
  .grid-surface::before{background-size:48px 48px}
}
@media (max-width:640px){
  :root{
    --grid-minor:rgba(246,243,236,.025);
    --section-y-tight:clamp(32px,7vw,48px);
  }
  :root:not(:has(body.docs-page)){--section-y:clamp(48px,10vw,72px)}
  .grid-surface::before{background-size:32px 32px}
  body.rt-page .site-shell{padding-top:72px}
}


/* ---- tool ---- */
:root{
  /* Colour, radius and motion come from tokens.css; the rest is layout local to this tool. */
  --bg:var(--background); --panel:var(--card);
  --line:var(--border); --line2:color-mix(in srgb, var(--foreground) 18%, transparent);
  --txt:var(--foreground); --dim:var(--muted-foreground);
  --dim2:color-mix(in srgb, var(--foreground) 72%, var(--card));
  --accent:var(--primary); --track:var(--secondary); --field:var(--input);
  --set:color-mix(in srgb, var(--primary) 55%, var(--foreground)); --warn:var(--chart-1);
  --sheet:#ffffff; --sheet-ink:#1a1a17;
  --r-btn:8px; --r-sm:12px; --r-md:16px;
  --gut:16px; --colL:250px; --colR:300px;
  --ease:cubic-bezier(.22,1,.36,1); --dur:.22s;
  /* type scale: 10 eyebrow / 11 control / 12.5 title */
  --fs-eyebrow:10px; --ls-eyebrow:.13em;
  --fs-ctl:11px; --fs-body:12px; --fs-title:12.5px;
  /* monospace reads optically larger at the same px */
  --fs-mono:calc(var(--fs-ctl) - .5px);
}
/* --rt-h is the viewport band left between nav and footer. */
html:has(body.rt-page){overflow:hidden}
body.rt-page{margin:0;background:var(--bg);overflow:hidden;
  font:12px/1.5 var(--font-sans);
  -webkit-font-smoothing:antialiased;color:var(--txt)}
/* ---- minimal footer ---- */
.rt-footer{background:rgba(9,9,9,.85);border-top:1px solid var(--border);
  padding:var(--space-4) 0 var(--space-3)}
/* Footer shares the app band's gutters, not the nav's content column. */
.rt-footer-bar{display:flex;align-items:center;gap:var(--space-6);flex-wrap:wrap;
  width:100%;margin:0;padding:0 32px}
.rt-foot-links{display:flex;align-items:center;gap:var(--space-6);flex-wrap:wrap;
  margin:0 auto}
.rt-foot-links a,.rt-foot-btn{font:inherit;font-size:13px;color:var(--dim);
  background:none;border:0;padding:0;cursor:pointer;text-decoration:none;
  transition:color .14s var(--ease)}
.rt-foot-links a:hover,.rt-foot-btn:hover{color:var(--txt)}
.rt-foot-kofi{display:inline-flex;align-items:center;flex-shrink:0;
  transition:opacity .14s var(--ease)}
.rt-foot-kofi:hover{opacity:.82}
.rt-foot-kofi img{height:26px;width:auto;display:block}
.rt-foot-copy{margin:0;font-size:12px;color:var(--dim);white-space:nowrap}
@media (max-width:760px){
  .rt-footer-bar{flex-wrap:wrap;justify-content:center;gap:var(--space-3) var(--space-4)}
  .rt-foot-links{margin:0;justify-content:center;gap:var(--space-4)}
  .rt-foot-copy{order:3;flex:1 0 100%;text-align:center}
}

/* Matches the shared rule in style.css, which this page does not load. */
.skip-link{position:absolute;left:-9999px;top:0;z-index:1200;
  padding:var(--space-2) var(--space-4);background:var(--primary);
  color:var(--primary-foreground);border-radius:var(--r-btn);
  font-size:12px;font-weight:600;text-decoration:none}
.skip-link:focus{left:var(--space-2);top:var(--space-2)}

/* Page never scrolls; panes scroll internally. --rt-foot is measured at runtime. */
.rt-app{--rt-nav:84px;--rt-gap:19px;--rt-h:calc(100svh - var(--rt-nav) - var(--rt-gap) - var(--rt-foot, 104px));
  position:relative;height:var(--rt-h);min-height:420px;
  width:100%;margin:0 0 var(--rt-gap);padding:0 var(--gut)}
*,*::before,*::after{box-sizing:border-box}
button{font-family:inherit}
::selection{background:color-mix(in srgb, var(--primary) 32%, transparent);color:var(--txt)}
input{caret-color:var(--accent)}
code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:var(--radius-xs)}

/* A page title, not a second nav: the nav above already carries the brand. */

.tb-title{font-size:15px;font-weight:650;letter-spacing:-.01em}
.tb-by{font-size:10px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;
  color:var(--dim);padding:3px 6px;border-radius:var(--radius-full);
  background:color-mix(in srgb, var(--foreground) 8%, transparent)}
.tb-sp{flex:1}
.tb-meta{font-size:var(--fs-ctl);color:var(--dim);font-variant-numeric:tabular-nums}
.tb-ghost{font:600 12px/1 inherit;color:var(--txt);background:transparent;
  border:1px solid var(--line);border-radius:var(--r-btn);padding:10px 12px;cursor:pointer;
  transition:background var(--dur) var(--ease),transform .16s var(--ease)}
.tb-ghost:hover{background:var(--field)}
.tb-ghost:active{transform:scale(.97)}
.tb-cta{display:inline-flex;align-items:center;gap:7px;font:800 12px/1 inherit;
  color:var(--primary-foreground);background:var(--primary);border:0;border-radius:var(--r-btn);padding:12px 18px;
  cursor:pointer;text-transform:uppercase;letter-spacing:.06em;
  transition:background var(--dur) var(--ease),transform .16s var(--ease)}
.tb-cta:hover{background:var(--primary-hover,#2f52d8)}
.tb-cta:active{transform:scale(.97)}
.tb-cta svg{width:15px;height:15px}

/* ---- shell ---- */
.pane{position:absolute;top:0;height:var(--rt-h);
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:0 10px 44px rgba(10,12,20,.20),0 2px 8px rgba(10,12,20,.10);
  overflow-y:auto;overscroll-behavior:contain;
  transition:transform var(--dur) var(--ease)}
#panelL{left:var(--gut);width:var(--colL)}
#panelR{right:var(--gut);width:var(--colR)}
#centre{position:absolute;top:0;
  left:calc(var(--gut)*2 + var(--colL));right:calc(var(--gut)*2 + var(--colR));
  height:var(--rt-h);
  display:flex;flex-direction:column;gap:var(--gut);min-width:0}
.pane::-webkit-scrollbar{width:10px}
.pane::-webkit-scrollbar-track{background:transparent}
.pane::-webkit-scrollbar-thumb{background:color-mix(in srgb, var(--foreground) 18%, transparent);border-radius:var(--radius-xs);
  border:3px solid transparent;background-clip:content-box}
.pane::-webkit-scrollbar-thumb:hover{background:color-mix(in srgb, var(--foreground) 28%, transparent);background-clip:content-box}

/* ---- panel headers ---- */
/* The tool identity lives at the top of the left pane, not in a second chrome bar. */
.pane-h-brand{gap:8px}
.pane-h-brand .tb-title{font-size:15px;font-weight:650;letter-spacing:-.01em}
.pane-h{display:flex;align-items:center;gap:8px;padding:13px 14px;
  font-size:var(--fs-title);font-weight:700;letter-spacing:0;position:sticky;top:0;z-index:3;
  background:var(--panel);border-bottom:1px solid var(--line)}
.pane-h .count{margin-left:auto;font-size:var(--fs-eyebrow);font-weight:500;color:var(--dim);
  font-variant-numeric:tabular-nums}
.sec-h{display:flex;align-items:center;gap:7px;width:100%;
  padding:13px 14px 12px;background:none;border:0;border-top:1px solid var(--line);
  cursor:pointer;user-select:none;
  font-weight:600;font-size:var(--fs-eyebrow);line-height:1;font-family:inherit;letter-spacing:var(--ls-eyebrow);
  text-transform:uppercase;color:var(--dim2);text-align:left}
.sec-h:first-of-type{border-top:0}
.sec-h .chev{width:11px;height:11px;transition:transform var(--dur) var(--ease)}
.sec-h[aria-expanded="false"] .chev{transform:rotate(-90deg)}
.sec-h .n{margin-left:auto;font-size:var(--fs-eyebrow);letter-spacing:0;color:var(--dim)}
.sec-body{overflow:hidden}
.sec-body[hidden]{display:none}

/* ---- tag list (column A) ---- */
.taglist{padding:8px}
.tagrow{display:flex;align-items:center;gap:8px;width:100%;min-height:32px;
  padding:7px 9px;margin-bottom:2px;border:0;border-radius:var(--radius-xs);
  background:transparent;cursor:pointer;text-align:left;color:var(--txt);
  transition:background .14s var(--ease)}
.tagrow:hover{background:var(--field)}
.tagrow[aria-current="true"]{background:var(--primary);color:var(--primary-foreground)}
.tagrow .dot{width:6px;height:6px;border-radius:50%;flex:0 0 auto;background:var(--success)}
.tagrow .dot.empty{background:var(--line2)}
.tagrow .dot.warn{background:var(--warn)}
.tagrow .nm{font-size:var(--fs-ctl);font-weight:500;overflow:hidden;
  text-overflow:ellipsis;white-space:nowrap}
.tagrow .tag{font-size:var(--fs-eyebrow);color:var(--dim);font-family:ui-monospace,monospace}
.tagrow[aria-current="true"] .tag{color:rgba(255,255,255,.62)}
.tagrow .n{margin-left:auto;font-size:var(--fs-eyebrow);color:var(--dim);
  font-variant-numeric:tabular-nums}
.tagrow[aria-current="true"] .n{color:rgba(255,255,255,.62)}

.toolbar-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto}

/* ---- centre ---- */
/* Padding sets the height so the 34px controls keep even breathing room. */
.toolbar{display:flex;align-items:center;gap:10px;padding:10px 12px;min-width:0;
  flex:0 0 auto;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--r-sm);box-shadow:0 2px 8px rgba(10,12,20,.06)}
.toolbar .lab{font-size:var(--fs-ctl);color:var(--dim);white-space:nowrap;
  overflow:hidden;text-overflow:ellipsis;min-width:0}
/* In dark UI the thumb must be lighter than the track, or it reads as a hole. */
.seg{display:inline-flex;background:var(--field);border-radius:var(--r-btn);padding:3px;gap:2px;
  border:1px solid var(--line);
  box-shadow:inset 0 1px 2px rgba(0,0,0,.35)}
.seg button{font:500 12px/1 inherit;letter-spacing:-.01em;color:var(--dim);
  background:transparent;border:0;border-radius:var(--radius-xs);padding:7px 14px;cursor:pointer;
  transition:background .15s var(--ease),color .15s var(--ease),transform .12s var(--ease)}
.seg button:active{transform:scale(.97)}
@media (hover:hover) and (pointer:fine){
  .seg button[aria-selected="false"]:hover{color:var(--txt)}
}
.seg button[aria-selected="true"]{background:var(--secondary);color:var(--txt);font-weight:600;
  box-shadow:0 1px 2px rgba(0,0,0,.35),inset 0 1px 0 rgba(246,243,236,.06)}
/* Stays a light document in dark chrome, and re-scopes the ink tokens children inherit. */
.sheet{flex:1;min-height:0;background:var(--sheet);border:1px solid var(--line);
  border-radius:var(--r-sm);box-shadow:0 8px 32px rgba(0,0,0,.45);
  overflow-y:auto;overscroll-behavior:contain;
  --txt:var(--sheet-ink);
  --dim:color-mix(in srgb, var(--sheet-ink) 62%, var(--sheet));
  --dim2:color-mix(in srgb, var(--sheet-ink) 70%, var(--sheet));
  --line:color-mix(in srgb, var(--sheet-ink) 8%, transparent);
  --line2:color-mix(in srgb, var(--sheet-ink) 16%, transparent);
  color:var(--sheet-ink)}
.sheet::-webkit-scrollbar{width:10px}
.sheet::-webkit-scrollbar-thumb{background:color-mix(in srgb, var(--sheet-ink) 18%, transparent);border-radius:var(--radius-xs);
  border:3px solid transparent;background-clip:content-box}
.spec{padding:40px 44px;max-width:760px}
.spec>*{margin:0 0 18px}
.spec section{padding:14px;margin:0 0 6px;border-radius:var(--radius-xs);cursor:pointer;
  transition:background .14s var(--ease)}
.spec section:hover{background:color-mix(in srgb, var(--sheet-ink) 4%, transparent)}
.spec section[aria-current="true"]{background:color-mix(in srgb, var(--sheet-ink) 7%, transparent);
  outline:1px solid var(--line2);outline-offset:0}
.spec .k{display:block;font-weight:600;font-size:var(--fs-eyebrow);line-height:1;font-family:var(--font-sans);letter-spacing:var(--ls-eyebrow);
  text-transform:uppercase;color:var(--dim2);margin-bottom:8px}
.codearea{display:block;width:100%;height:100%;padding:22px 24px;margin:0;border:0;
  outline:none;resize:none;background:transparent;color:var(--txt);
  font:11.5px/1.75 ui-monospace,SFMono-Regular,Menlo,monospace;
  tab-size:2;caret-color:var(--accent)}
.codearea::placeholder{color:var(--dim)}

/* ---- style panel (column C) ---- */
.row{display:flex;align-items:center;gap:8px;padding:5px 14px;min-width:0}
.row .lab{width:74px;flex:0 0 auto;font-size:var(--fs-ctl);color:var(--dim);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.row.is-set .lab{color:var(--set);font-weight:600}
.row .val{flex:1;display:flex;align-items:center;gap:4px;min-width:0;overflow:hidden}
.inp{width:56px;flex:0 0 auto;padding:5px 6px;font-size:var(--fs-ctl);line-height:1;text-align:center;
  color:var(--txt);background:var(--field);border:1px solid var(--line);
  border-radius:var(--radius-xs);outline:none;font-variant-numeric:tabular-nums;
  transition:border-color .14s var(--ease),background .14s var(--ease)}
.inp:hover{background:color-mix(in srgb, var(--foreground) 6%, var(--field))}
.inp:focus{border-color:var(--accent);background:var(--popover)}
.inp.wide{width:100%;min-width:0;flex:1 1 auto;text-align:left;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.unit{font-size:var(--fs-eyebrow);color:var(--dim);min-width:22px;flex:0 0 auto}
.sw{width:24px;height:24px;flex:0 0 auto;border-radius:var(--radius-xs);
  border:1px solid var(--line2);cursor:pointer;padding:0;background:none}
.sw i{display:block;width:100%;height:100%;border-radius:4px}
.edited{width:5px;height:5px;border-radius:50%;background:var(--set);flex:0 0 auto;
  opacity:0;transition:opacity .16s var(--ease)}
.row.is-edited .edited{opacity:1}
.revert{width:24px;height:24px;flex:0 0 auto;margin-left:auto;padding:0;border:0;border-radius:var(--radius-xs);
  background:transparent;color:var(--dim);cursor:pointer;opacity:0;
  display:grid;place-items:center;transition:opacity .14s var(--ease),background .14s var(--ease)}
.row.is-edited:hover .revert,.revert:focus-visible{opacity:1}
/* An added row's remove handle appears on hover even when the row has no value yet. */
.row:hover .revert.is-remove,.revert.is-remove:focus-visible{opacity:1}
.revert.is-remove:hover{background:color-mix(in srgb, var(--destructive) 18%, transparent);color:var(--destructive)}
.revert:hover{background:var(--field);color:var(--txt)}
.revert svg{width:12px;height:12px}
.empty{padding:22px 16px;font-size:var(--fs-ctl);color:var(--dim);text-align:center}

.addrow{padding:10px 14px 16px}
.addbtn{padding:7px 12px;font:inherit;font-size:var(--fs-ctl);color:var(--dim);
  background:transparent;border:1px dashed var(--line2);border-radius:var(--r-btn);cursor:pointer;
  transition:color .14s var(--ease),border-color .14s var(--ease),background .14s var(--ease)}
.addbtn:hover{color:var(--txt);border-color:var(--dim);background:var(--field)}
/* display:flex outranks the [hidden] UA rule, so hiding must be explicit. */
[hidden]{display:none!important}
.addform{position:relative;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.addform .inp{text-align:left;font-variant-numeric:normal}
.addprop{width:74px;flex:0 0 auto}
.addval{flex:1 1 auto;min-width:0}
.adderr{flex:1 0 100%;font-size:var(--fs-eyebrow);color:var(--destructive)}
.addmenu{position:absolute;top:calc(100% + 4px);left:0;right:0;z-index:20;
  max-height:260px;overflow:auto;padding:4px;
  background:var(--panel);border:1px solid var(--line2);border-radius:var(--r-btn);
  box-shadow:0 8px 24px rgba(0,0,0,.45)}
.addopt{display:flex;align-items:center;gap:8px;width:100%;
  padding:7px 9px;font:inherit;font-size:var(--fs-ctl);color:var(--txt);text-align:left;
  background:none;border:0;border-radius:var(--radius-xs);cursor:pointer}
.addopt:hover,.addopt:focus-visible{background:var(--field)}
.addopt .k{margin-left:auto;font-size:var(--fs-eyebrow);color:var(--dim)}

/* ---- footer pill ---- */
/* Transparent 1px border keeps ghost and solid variants the same height. */
.copy{display:inline-flex;align-items:center;justify-content:center;gap:7px;
  font-family:inherit;font-size:13.5px;font-weight:600;line-height:1.5;letter-spacing:-.01em;
  color:var(--primary-foreground);background:var(--primary);
  border:1px solid transparent;border-radius:var(--r-btn);padding:6px 14px;
  cursor:pointer;transition:background var(--dur) var(--ease),
    border-color var(--dur) var(--ease),transform .16s var(--ease)}
.copy:hover{background:var(--accent-hover,#2f52d8)}
.copy:active{transform:scale(.97)}
.copy.ghost{background:transparent;color:var(--txt);border-color:var(--line2)}
.copy.ghost:hover{background:var(--field);border-color:var(--dim)}
.copy svg{width:14px;height:14px}

/* ---- toast ---- */
/* Sits above the footer; the top-right corner is behind the fixed nav. */
#toast{position:fixed;left:50%;bottom:calc(var(--rt-foot, 104px) + var(--space-4));z-index:60;
  width:max-content;max-width:min(360px,calc(100vw - 32px));
  padding:11px 16px;border-radius:var(--r-sm);background:var(--panel);
  border:1px solid var(--line2);box-shadow:0 14px 40px rgba(0,0,0,.45);
  opacity:0;transform:translate(-50%,10px) scale(.97);pointer-events:none;
  transition:transform .22s var(--ease),opacity .16s var(--ease)}
#toast.show{opacity:1;transform:translate(-50%,0) scale(1)}
#toast .tt{display:flex;align-items:center;justify-content:center;gap:9px;
  font-size:13px;font-weight:650;letter-spacing:-.01em}
#toast .sub{margin-top:2px;text-align:center;font-size:12px;color:var(--dim)}


/* ---- groups (added for rich text) ---- */
.grp-h{display:flex;align-items:center;gap:7px;padding:11px 9px 6px;
  font-weight:600;font-size:var(--fs-eyebrow);line-height:1;font-family:inherit;letter-spacing:var(--ls-eyebrow);text-transform:uppercase;color:var(--dim2)}
.grp-h .n{margin-left:auto;font-size:var(--fs-eyebrow);letter-spacing:0;color:var(--dim);font-weight:500}
.tagrow.rt .nm{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:var(--fs-mono)}
.tagrow.rt::before{content:"";width:9px;height:1px;background:var(--line2);flex:0 0 auto;margin-right:-2px}
#panelRTitle .scope{color:var(--dim);font-weight:500;
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:var(--fs-ctl)}
.spec-h{margin:6px 0 14px;padding:0 14px;font-weight:600;font-size:var(--fs-eyebrow);line-height:1;font-family:inherit;letter-spacing:var(--ls-eyebrow);
  text-transform:uppercase;color:var(--dim2)}
.spec-h:not(:first-child){margin-top:38px;padding-top:20px;border-top:1px solid var(--line)}
.spec-h span{font-weight:500;letter-spacing:0;text-transform:none;color:var(--dim);
  font-family:ui-monospace,monospace;font-size:var(--fs-eyebrow);margin-left:6px}
.rt-wrap{border-left:1px solid var(--line);padding-left:20px;margin-left:14px}

/* Reduced motion: drop movement, keep colour/opacity state feedback. */
/* ---- number + unit field ---- */
.numfield{display:flex;align-items:center;flex:0 0 auto;background:var(--field);
  border:1px solid var(--line);border-radius:var(--radius-xs);overflow:hidden;
  transition:border-color .14s var(--ease),background .14s var(--ease)}
.numfield:hover{background:color-mix(in srgb, var(--foreground) 6%, var(--field))}
.numfield:focus-within{border-color:var(--accent);background:var(--popover)}
.num{width:52px;padding:5px 4px 5px 7px;border:0;background:transparent;outline:none;
  font:inherit;font-size:var(--fs-ctl);color:var(--txt);font-variant-numeric:tabular-nums}
.num::placeholder{color:var(--dim);opacity:.6}
.unitsel{border:0;background:transparent;outline:none;cursor:pointer;
  font:inherit;font-size:var(--fs-eyebrow);color:var(--dim);
  padding:5px 4px 5px 0;appearance:none;text-align:right;min-width:30px}
.unitsel:hover{color:var(--txt)}
select.inp{cursor:pointer;appearance:none;padding-right:18px;
  background-image:linear-gradient(45deg,transparent 50%,var(--dim) 50%),
    linear-gradient(135deg,var(--dim) 50%,transparent 50%);
  background-position:calc(100% - 11px) 10px,calc(100% - 7px) 10px;
  background-size:4px 4px,4px 4px;background-repeat:no-repeat}
.sw{position:relative;width:24px;height:24px;flex:0 0 auto;border-radius:var(--radius-xs);
  border:1px solid var(--line2);overflow:hidden;cursor:pointer;display:block}
.sw input[type=color]{position:absolute;inset:-4px;width:calc(100% + 8px);
  height:calc(100% + 8px);border:0;padding:0;cursor:pointer;opacity:0}
.sw i{display:block;width:100%;height:100%;pointer-events:none}
.sw i.none{background:repeating-linear-gradient(45deg,var(--field) 0 4px,var(--secondary) 4px 8px)}
.row:not(.is-set) .lab{color:var(--dim);font-weight:400}

/* ---- class name field ---- */
.clsrow{padding:10px 8px 4px}
.clslab{display:block;padding:0 2px 6px;font-size:var(--fs-eyebrow);font-weight:600;
  letter-spacing:.06em;text-transform:uppercase;color:var(--dim2)}
.clsfield{display:flex;align-items:center;gap:1px;padding:0 9px;height:32px;
  background:var(--field);border:1px solid var(--line);border-radius:var(--r-btn);
  transition:border-color .14s var(--ease),background .14s var(--ease)}
.clsfield:hover{background:color-mix(in srgb, var(--foreground) 6%, var(--field))}
.clsfield:focus-within{border-color:var(--accent);background:var(--popover)}
.clsfield .dot-sel{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:var(--fs-ctl);color:var(--dim)}
.clsfield input{width:100%;min-width:0;border:0;background:transparent;outline:none;
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:var(--fs-ctl);
  color:var(--txt);padding:0}



@media (max-width:1180px){
  :root{--colL:210px;--colR:260px}
  .toolbar .lab{display:none}
}
@media (max-width:900px){
  :root{--colL:190px;--colR:240px;--gut:10px}
}
/* Actions wrap to their own row here, or the narrow toolbar clips Copy. */
@media (max-width:1000px){
  .toolbar{flex-wrap:wrap;row-gap:8px}
  .toolbar .tb-sp{display:none}
  .toolbar-actions{flex:1 0 100%;justify-content:flex-end}
}
/* Three panes cannot fit a phone, so the tool stays desktop-only and says so. */
.rt-small{display:none}
@media (max-width:640px){ .rt-app{--rt-nav:72px} }
@media (max-width:760px){
  /* No fixed band here: the shell becomes a column so the footer stays at the bottom. */
  body.rt-page .site-shell{display:flex;flex-direction:column;min-height:100svh}
  body.rt-page .main-content{display:flex;flex-direction:column;flex:1}
  /* Band sizes to the notice; spare height goes around it so the card never stretches. */
  .rt-app{height:auto;min-height:0;flex:1;display:flex;align-items:center;
    padding-top:var(--space-6);padding-bottom:var(--space-6)}
  .rt-footer{margin-top:auto}
  .pane,#centre{display:none}
  .rt-small{display:block;width:100%;padding:var(--space-8) var(--space-6);text-align:center;
    background:var(--panel);border:1px solid var(--line);border-radius:var(--r-md)}
  .rt-small-icon{display:inline-flex;align-items:center;justify-content:center;
    width:44px;height:44px;margin-bottom:var(--space-4);color:var(--dim);
    background:var(--field);border-radius:var(--r-sm)}
  .rt-small-icon svg{width:22px;height:22px}
  .rt-small h1{margin:0 0 var(--space-2);font-size:18px;font-weight:650;
    letter-spacing:-.01em;color:var(--txt)}
  .rt-small p{max-width:38ch;margin:0 auto;font-size:13px;line-height:1.6;color:var(--dim)}
  .rt-small p.rt-small-link{margin-top:var(--space-4)}
  .rt-small-link a{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
}

@media (prefers-reduced-motion:reduce){
  .tb-ghost:active,.tb-cta:active,.copy:active,.seg button:active{transform:none}
  .sec-h .chev{transition:none}
  .pane{transition:none}
  #toast{transition:opacity .2s linear;transform:translate(-50%,0)}
  #toast.show{transform:translate(-50%,0)}
}