/* ==========================================================================
   Smarter Home Gadgets: "control room at night"
   One dark scene, one acid accent, condensed display type at full volume.
   ========================================================================== */

:root{
  color-scheme:dark;

  /* scene */
  --ink:#0B0C0F;
  --surface:#0B0C0F;
  --surface-2:#14161B;
  --surface-3:#1C1F26;
  --line:#272B34;
  --line-2:#3A3F4A;
  --text:#F1F3EA;
  --muted:#A0A5AE;

  /* the one accent, plus data tones used only for state */
  --acid:#D4FF3A;
  --acid-ink:#0B0C0F;
  --acid-soft:rgba(212,255,58,.10);
  --acid-line:rgba(212,255,58,.38);
  --hot:#FF5468;
  --warn:#FFB63D;

  /* legacy names still referenced by glyphs and diagrams */
  --amber:var(--acid);
  --amber-soft:var(--acid-soft);
  --cyan:#9BF0D2;
  --cyan-soft:rgba(155,240,210,.12);
  --grid-line:rgba(255,255,255,.05);
  --glow:rgba(212,255,58,.35);

  --wifi-fill:rgba(155,240,210,.08);
  --wifi-line:rgba(155,240,210,.45);
  --d-good:#C9F53A;
  --d-mid:#A0A5AE;
  --d-bad:#FF5468;
  --d-warn:#FFB63D;

  --f-display:"Bricolage Grotesque","Arial Narrow","Trebuchet MS",sans-serif;
  --f-body:"Instrument Sans","Segoe UI",system-ui,sans-serif;
  --f-mono:"JetBrains Mono",ui-monospace,Consolas,monospace;

  --step-0:1.0625rem;
  --step-1:1.25rem;
  --step-2:1.6rem;
  --step-3:clamp(1.9rem,3.4vw,2.6rem);
  --step-4:clamp(2.5rem,6vw,5rem);
  --step-5:clamp(3.1rem,8.2vw,7.4rem);

  --r-xs:5px;
  --r:14px;
  --r-lg:22px;
  --maxw:1240px;
  --gutter:clamp(1rem,3.6vw,3rem);
  --nav-h:66px;

  --ease-out:cubic-bezier(.23,1,.32,1);
  --ease-spring:cubic-bezier(.34,1.56,.64,1);

  --z-base:1;
  --z-sticky:40;
  --z-float:50;
  --z-progress:60;
  --z-skip:70;
  --z-grain:80;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:90px}
html,body{overflow-x:clip}
body{
  margin:0;
  background:var(--surface);
  color:var(--text);
  font-family:var(--f-body);
  font-size:var(--step-0);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
/* film grain: static texture, never animated */
body::after{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:var(--z-grain);
  opacity:.06;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
::selection{background:var(--acid);color:var(--acid-ink)}
:focus-visible{outline:2px solid var(--acid);outline-offset:3px;border-radius:4px}
img{max-width:100%}
a{color:inherit}

.wrap{width:min(100% - 2 * var(--gutter),var(--maxw));margin-inline:auto}

.label{
  font-family:var(--f-mono);
  font-size:.75rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--muted);
}

/* ==========================================================================
   nav
   ========================================================================== */
.nav{
  position:sticky;top:0;z-index:var(--z-sticky);
  background:rgba(11,12,15,.72);
  backdrop-filter:blur(16px) saturate(1.4);
  -webkit-backdrop-filter:blur(16px) saturate(1.4);
  border-bottom:1px solid var(--line);
  transition:transform .35s var(--ease-out);
}
.nav.nav-hide{transform:translateY(-100%)}
.nav-in{display:flex;align-items:center;gap:1.75rem;height:66px}
.brand{
  display:flex;align-items:center;gap:.6rem;min-height:44px;text-decoration:none;
  font-family:var(--f-display);font-weight:800;font-size:1.08rem;letter-spacing:-.01em;
  font-stretch:80%;text-transform:uppercase;
}
.brand-txt b{color:var(--acid);font-weight:800}
.dot{
  width:10px;height:10px;border-radius:50%;background:var(--acid);flex:none;
  box-shadow:0 0 0 0 var(--glow);animation:beat 2.4s var(--ease-out) infinite;
}
@keyframes beat{0%{box-shadow:0 0 0 0 var(--glow)}70%{box-shadow:0 0 0 12px rgba(212,255,58,0)}100%{box-shadow:0 0 0 0 rgba(212,255,58,0)}}
/* ---------- main menu: disclosure buttons + mega panels ---------- */
.menu{display:flex;align-items:center;margin-left:auto}
.menu-list{display:flex;align-items:center;gap:.25rem;margin:0;padding:0;list-style:none}
.mi-btn,.mi-link{
  display:inline-flex;align-items:center;gap:.4rem;
  font:500 .93rem/1 var(--f-body);color:var(--muted);text-decoration:none;
  padding:.62rem .85rem;border-radius:999px;border:0;background:transparent;cursor:pointer;
  transition:color .2s,background-color .2s;
}
.mi-btn:hover,.mi-link:hover{color:var(--text);background:var(--surface-3)}
.mi-btn[aria-expanded="true"]{color:var(--text);background:var(--surface-3)}
.mi-btn.is-current{color:var(--text)}
.mi-btn.is-current::after{content:"";width:5px;height:5px;border-radius:50%;background:var(--acid);margin-left:.1rem;order:3}
.chev{width:12px;height:12px;transition:transform .25s var(--ease-out)}
.mi-btn[aria-expanded="true"] .chev{transform:rotate(180deg);color:var(--acid)}
.menu-foot{display:none}
.nav-end{display:flex;align-items:center;gap:1rem;margin-left:1.25rem}
.burger{display:none}

.mm{
  position:absolute;left:0;right:0;top:100%;
  max-height:calc(100vh - 66px);overflow-y:auto;overscroll-behavior:contain;
  background:rgba(14,15,19,.985);
  border-bottom:1px solid var(--line);
  box-shadow:0 40px 80px -30px rgba(0,0,0,.85);
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .18s var(--ease-out),transform .24s var(--ease-out),visibility 0s linear .24s;
}
.mi-btn[aria-expanded="true"] + .mm{
  opacity:1;visibility:visible;transform:none;
  transition:opacity .2s var(--ease-out),transform .26s var(--ease-out),visibility 0s;
}
.mm::before{ /* acid hairline under the bar while a panel is open */
  content:"";position:absolute;left:0;right:0;top:-1px;height:1px;
  background:linear-gradient(90deg,transparent,var(--acid) 30%,var(--acid) 70%,transparent);opacity:.6;
}
.mm-in{padding:2rem 0 2.25rem}
.mm .label{display:block;margin-bottom:.9rem}

/* tests panel */
.mm-grid{display:grid;gap:clamp(1.5rem,3vw,3rem)}
.mm-tests{grid-template-columns:minmax(0,1fr) 300px}
.mm-devs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.6rem}
.mm-dev{
  display:grid;grid-template-columns:40px minmax(0,1fr) auto;align-items:center;gap:.8rem;
  padding:.85rem .95rem;border:1px solid var(--line);border-radius:12px;background:var(--surface-2);
  text-decoration:none;transition:border-color .2s,background-color .2s,transform .2s var(--ease-out);
}
.mm-dev:hover{border-color:var(--acid-line);background:var(--surface-3)}
.mm-dev:active{transform:scale(.98)}
.mm-dev .glyph{width:40px;height:40px;color:var(--text)}
.mm-dev-txt{display:flex;flex-direction:column;min-width:0}
.mm-dev-txt b{font-weight:600;font-size:.93rem;line-height:1.25}
.mm-dev-txt span{font-family:var(--f-mono);font-size:.72rem;color:var(--muted);margin-top:.15rem}
.mm-score{
  font-family:var(--f-display);font-weight:800;font-stretch:75%;font-size:1.6rem;line-height:1;
  color:var(--acid);font-variant-numeric:tabular-nums;
}
.mm-link{display:block;padding:.65rem .8rem;margin:0 -.8rem;border-radius:10px;text-decoration:none;transition:background-color .2s}
.mm-link b{display:flex;align-items:center;gap:.4rem;font-weight:600;font-size:.95rem}
.mm-link b::after{content:"\2192";color:var(--acid);opacity:0;transform:translateX(-4px);transition:opacity .2s,transform .2s var(--ease-out)}
.mm-link span{display:block;font-size:.84rem;color:var(--muted);margin-top:.15rem}
.mm-link:hover{background:var(--surface-2)}
.mm-link:hover b::after{opacity:1;transform:none}

/* guides panel */
.mm-guides{grid-template-columns:minmax(0,1fr) 320px}
.mm-groups{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1.75rem}
.mm-group{display:flex;flex-direction:column;gap:.1rem;min-width:0}
.mm-guide{
  display:block;padding:.6rem .65rem;margin:0 -.65rem;border-radius:10px;text-decoration:none;
  font-size:.9rem;line-height:1.35;color:var(--text);
  transition:background-color .2s,color .2s;
}
.mm-guide:hover{background:var(--surface-2)}
.mm-guide[aria-current="page"]{color:var(--acid)}
.mm-k{display:block;font-family:var(--f-mono);font-size:.64rem;letter-spacing:.12em;text-transform:uppercase;color:var(--acid);margin-bottom:.2rem}
.mm-feat{align-self:start;
  position:relative;display:flex;align-items:flex-end;min-height:250px;overflow:hidden;isolation:isolate;
  border:1px solid var(--line);border-radius:var(--r);text-decoration:none;
}
.mm-feat img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2;transition:transform .6s var(--ease-out)}
.mm-feat::before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(to top,rgba(11,12,15,.96) 30%,rgba(11,12,15,.25))}
.mm-feat:hover img{transform:scale(1.05)}
.mm-feat:hover{border-color:var(--acid-line)}
.mm-feat-txt{display:flex;flex-direction:column;gap:.5rem;padding:1.2rem}
.mm-feat .label{margin:0;color:var(--acid)}
.mm-feat b{font-family:var(--f-display);font-size:1.25rem;line-height:1.15;letter-spacing:-.01em}
.mm-feat-go{font-size:.85rem;font-weight:600;color:var(--muted)}
.mm-bar{display:flex;justify-content:flex-end;margin-top:1.5rem;padding-top:1.1rem;border-top:1px solid var(--line)}
.mm-bar a{color:var(--acid);font-weight:600;font-size:.92rem;text-decoration:none}
.mm-bar a:hover{text-decoration:underline;text-underline-offset:3px}

.scrim{
  position:fixed;inset:0;z-index:calc(var(--z-sticky) - 1);
  background:rgba(5,6,8,.62);
  opacity:0;pointer-events:none;transition:opacity .25s var(--ease-out);
}
.mm-open .scrim{opacity:1;pointer-events:auto}

@media (max-width:1180px) and (min-width:981px){
  .mm-guides,.mm-tests{grid-template-columns:minmax(0,1fr) 260px}
  .mm-groups{grid-template-columns:repeat(2,minmax(0,1fr))}
  .mm-devs{grid-template-columns:repeat(2,minmax(0,1fr))}
}

/* ---------- small screens: burger + full-height drawer, panels become accordions ---------- */
@media (max-width:980px){
  .nav-end{display:none}
  .burger{
    display:inline-flex;align-items:center;gap:.6rem;margin-left:auto;
    min-height:44px;padding:0 1rem 0 .85rem;border:1px solid var(--line-2);border-radius:999px;
    background:transparent;color:var(--text);font:600 .9rem/1 var(--f-body);cursor:pointer;
  }
  .burger-box{position:relative;flex:none;width:18px;height:12px}
  .burger-txt{white-space:nowrap}
  .burger-box i{position:absolute;left:0;right:0;height:2px;border-radius:2px;background:currentColor;transition:transform .3s var(--ease-out),top .3s var(--ease-out)}
  .burger-box i:first-child{top:1px}
  .burger-box i:last-child{top:9px}
  .burger[aria-expanded="true"]{background:var(--acid);border-color:var(--acid);color:var(--acid-ink)}
  .burger[aria-expanded="true"] .burger-box i:first-child{top:5px;transform:rotate(45deg)}
  .burger[aria-expanded="true"] .burger-box i:last-child{top:5px;transform:rotate(-45deg)}

  .menu{
    position:absolute;left:0;right:0;top:100%;
    height:calc(100dvh - 66px);overflow-y:auto;overscroll-behavior:contain;
    flex-direction:column;align-items:stretch;margin:0;
    padding:.5rem 1.25rem 2rem;background:var(--surface);
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .2s var(--ease-out),transform .28s var(--ease-out),visibility 0s linear .28s;
  }
  .nav.menu-open .menu{opacity:1;visibility:visible;transform:none;transition:opacity .2s var(--ease-out),transform .28s var(--ease-out),visibility 0s}
  .menu-list{flex-direction:column;align-items:stretch;gap:0}
  .mi{border-bottom:1px solid var(--line)}
  .mi-btn,.mi-link{
    width:100%;justify-content:space-between;padding:1.15rem 0;border-radius:0;
    font:800 clamp(1.6rem,7vw,2.2rem)/1 var(--f-display);font-stretch:78%;text-transform:uppercase;letter-spacing:-.01em;
    color:var(--text);
  }
  .mi-btn:hover,.mi-link:hover,.mi-btn[aria-expanded="true"]{background:transparent}
  .mi-btn[aria-expanded="true"]{color:var(--acid)}
  .mi-btn.is-current::after{display:none}
  .chev{width:18px;height:18px}

  .mm,.mi-btn[aria-expanded="true"] + .mm{
    position:static;max-height:none;overflow:visible;background:none;border:0;box-shadow:none;
    opacity:1;visibility:visible;transform:none;transition:none;
  }
  .mm{display:none}
  .mi-btn[aria-expanded="true"] + .mm{display:block;animation:drop .3s var(--ease-out)}
  .mm::before{display:none}
  .mm .wrap{width:100%}
  .mm-in{padding:0 0 1.4rem}
  .mm-tests,.mm-guides{grid-template-columns:1fr}
  .mm-devs{grid-template-columns:1fr 1fr}
  .mm-groups{grid-template-columns:1fr;gap:1.25rem}
  .mm-feat{display:none}
  .mm-bar{justify-content:flex-start;margin-top:.75rem}
  .menu-foot{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding-top:1.5rem;margin-top:auto}
  .menu-foot .btn{display:inline-flex}
  .scrim{display:none}
}
@media (max-width:520px){
  .mm-devs{grid-template-columns:1fr}
  .brand-txt{font-size:.95rem}
}
html.menu-locked{overflow:hidden}

/* ==========================================================================
   buttons
   ========================================================================== */
.btn{
  position:relative;display:inline-flex;align-items:center;gap:.6rem;
  font-family:var(--f-body);font-weight:700;font-size:.95rem;letter-spacing:-.005em;
  padding:.8rem 1.3rem;border-radius:999px;border:1px solid transparent;
  text-decoration:none;cursor:pointer;white-space:nowrap;
  transition:transform .2s var(--ease-out),background-color .2s,color .2s,border-color .2s,box-shadow .25s;
}
.btn:active{transform:scale(.97)}
.btn-sm{padding:.55rem 1rem;font-size:.86rem}
.btn-lg{padding:1rem 1.6rem;font-size:1.02rem}
.btn-arrow{display:inline-block;transition:transform .25s var(--ease-out)}
.btn:hover .btn-arrow{transform:translateX(4px)}
.btn[href^="#"]:hover .btn-arrow{transform:translateY(3px)}
.btn-primary{background:var(--acid);color:var(--acid-ink);box-shadow:0 0 0 0 var(--glow)}
.btn-primary:hover{box-shadow:0 10px 40px -8px var(--glow)}
.btn-ghost{border-color:var(--line-2);color:var(--text);background:rgba(11,12,15,.4)}
.btn-ghost:hover{border-color:var(--text);background:var(--surface-3)}
.btn-ink{background:var(--acid-ink);color:var(--acid)}
.btn-ink:hover{box-shadow:0 14px 40px -12px rgba(0,0,0,.6)}

/* ==========================================================================
   hero
   ========================================================================== */
.hero{
  position:relative;overflow:hidden;isolation:isolate;
  min-height:calc(100svh - 66px);
  display:flex;align-items:stretch;
  padding:clamp(1.75rem,4vw,3rem) 0 clamp(2rem,4vw,3rem);
  background:
    radial-gradient(90% 70% at 85% 10%,rgba(212,255,58,.07),transparent 60%),
    var(--surface);
}
#mesh{position:absolute;inset:0;width:100%;height:100%;z-index:-1;touch-action:pan-y}
.hero::after{
  content:"";position:absolute;inset:auto 0 0 0;height:30%;z-index:-1;pointer-events:none;
  background:linear-gradient(to bottom,transparent,var(--surface));
}
.hero-in{display:flex;flex-direction:column;justify-content:space-between;gap:clamp(1.5rem,3.5vw,3rem);pointer-events:none}
.hero-in a,.hero-in .console,.hero-in .chip{pointer-events:auto}
.hero-top{display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap}
.chip{
  display:inline-flex;align-items:center;gap:.6rem;
  padding:.42rem .85rem .42rem .7rem;border:1px solid var(--line-2);border-radius:999px;
  background:rgba(20,22,27,.75);backdrop-filter:blur(8px);
  font-family:var(--f-mono);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;
}
.spark{width:7px;height:7px;border-radius:50%;background:var(--acid);box-shadow:0 0 10px var(--acid)}
.hero-hint{display:flex;align-items:center;gap:.5rem}
.hero-hint::before{content:"";width:28px;height:1px;background:var(--line-2)}
@media (hover:none),(max-width:640px){.hero-hint{display:none}}

h1{
  font-family:var(--f-display);
  font-size:var(--step-5);
  line-height:.86;
  letter-spacing:-.025em;
  font-weight:800;
  font-stretch:75%;
  margin:0;
  text-wrap:balance;
}
.mega{text-transform:uppercase;max-width:14ch;margin-bottom:clamp(1.25rem,2.5vw,2rem)}
h1 em{
  font-style:normal;position:relative;display:inline-block;
  color:var(--acid-ink);padding:0 .08em;margin:0 -.02em;
  transform:rotate(-2.5deg);z-index:0;
}
h1 em::before{
  content:"";position:absolute;inset:.04em -.02em -.02em;z-index:-1;
  background:var(--acid);border-radius:.08em;
  transform-origin:left center;
}
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(300px,400px);gap:clamp(2rem,4vw,3.5rem);align-items:center}
@media (max-width:940px){.hero-grid{grid-template-columns:1fr}}
.lede{font-size:clamp(1.05rem,1.4vw,1.2rem);color:var(--muted);max-width:54ch;margin:0 0 1.6rem;line-height:1.55}
.lede::first-line{color:var(--text)}
.hero-cta{display:flex;gap:.75rem;flex-wrap:wrap}

.hero-meta{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  border-top:1px solid var(--line);
}
.metric{display:flex;flex-direction:column;gap:.2rem;padding:1.1rem 1.25rem 0 0}
.metric + .metric{padding-left:1.25rem;border-left:1px solid var(--line)}
.metric b{
  font-family:var(--f-display);font-weight:800;font-stretch:75%;
  font-size:clamp(2rem,4.4vw,3.6rem);line-height:1;letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;color:var(--text);
}
.metric:first-child b{color:var(--acid)}
@media (max-width:560px){
  .hero-meta{grid-template-columns:1fr}
  .metric + .metric{padding-left:0;border-left:0;border-top:1px solid var(--line);padding-top:.9rem;margin-top:.9rem}
  .metric{padding-top:.9rem}
}

/* live console */
.console{
  background:rgba(20,22,27,.82);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line-2);
  border-radius:var(--r-lg);
  box-shadow:0 30px 80px -30px rgba(0,0,0,.9),0 0 0 1px rgba(212,255,58,.04) inset;
  overflow:hidden;
  transform:perspective(1000px) rotateX(var(--rx,0deg)) rotateY(var(--ry,0deg));
  transition:transform .5s var(--ease-out);
}
.console-head{display:flex;align-items:center;gap:.5rem;padding:.9rem 1.15rem;border-bottom:1px solid var(--line)}
.console-head .label{margin-left:auto}
.led{width:8px;height:8px;border-radius:50%;background:var(--line-2)}
.led.on{background:var(--acid);box-shadow:0 0 10px var(--acid)}
.led.on + .led.on{animation:blink 1.6s steps(2,start) infinite}
@keyframes blink{to{opacity:.25}}
.rows{display:flex;flex-direction:column}
.row{
  display:grid;grid-template-columns:1fr auto auto;align-items:center;gap:1rem;
  padding:.85rem 1.15rem;border-bottom:1px solid var(--line);
  font-family:var(--f-mono);font-size:.84rem;
}
.row:last-child{border-bottom:0}
.row .name{font-family:var(--f-body);font-size:.95rem;font-weight:500}
.row .val{font-variant-numeric:tabular-nums;color:var(--text);min-width:5.5ch;text-align:right;transition:color .4s}
.row .val.tick{color:var(--acid)}
.pill{font-family:var(--f-mono);font-size:.75rem;letter-spacing:.1em;text-transform:uppercase;padding:.22rem .5rem;border-radius:var(--r-xs)}
.pill.ok{background:var(--acid-soft);color:var(--acid)}
.pill.warn{background:rgba(255,182,61,.13);color:var(--warn)}
.row-batt{grid-template-columns:1fr}
.batt-line{display:flex;justify-content:space-between;align-items:center;margin-bottom:.55rem}
.bar{height:4px;background:var(--line);border-radius:2px;overflow:hidden}
.bar i{
  display:block;height:100%;width:100%;background:var(--acid);
  transform-origin:left;transform:scaleX(var(--w,.86));
  transition:transform .9s var(--ease-out);
}

/* ==========================================================================
   ticker: two crossing tapes
   ========================================================================== */
.ticker{position:relative;padding:3.2rem 0;overflow:hidden;border-block:1px solid var(--line)}
.marquee{
  display:flex;overflow:hidden;white-space:nowrap;
  font-family:var(--f-display);font-weight:800;font-stretch:75%;text-transform:uppercase;
  font-size:clamp(1.6rem,3.6vw,2.8rem);line-height:1;letter-spacing:-.01em;
  padding:.85rem 0;
  transform:rotate(-2deg) scale(1.04);
  background:var(--acid);color:var(--acid-ink);
  position:relative;z-index:2;
}
.marquee.rev{
  background:var(--surface-2);color:var(--text);
  transform:rotate(1.6deg) scale(1.04);margin-top:-.6rem;z-index:1;
  border-block:1px solid var(--line-2);
}
.marquee.rev span{color:transparent;-webkit-text-stroke:1.2px var(--text)}
.marquee-track{display:flex;flex:none;animation:slide 38s linear infinite}
.marquee.rev .marquee-track{animation-direction:reverse;animation-duration:46s}
.marquee-run{display:flex;align-items:center;flex:none}
.marquee span{padding:0 .55em}
.marquee b{font-size:.6em;opacity:.8}
.marquee.rev b{color:var(--acid)}
@keyframes slide{to{transform:translateX(-50%)}}

/* ==========================================================================
   sections
   ========================================================================== */
section{position:relative;padding:clamp(5rem,10vw,8.5rem) 0;overflow-x:clip}
section > .wrap{position:relative}
section + section{border-top:1px solid var(--line)}
.sec-head{max-width:68ch;margin-bottom:clamp(2.5rem,5vw,4rem)}
.sec-n{
  position:absolute;right:-.04em;top:-.12em;z-index:-1;
  font-family:var(--f-display);font-weight:800;font-stretch:75%;
  font-size:clamp(7rem,18vw,15rem);line-height:.8;letter-spacing:-.04em;
  color:transparent;-webkit-text-stroke:1px var(--line-2);
  pointer-events:none;user-select:none;
}
.sec-head .label{display:inline-flex;align-items:center;gap:.6rem;color:var(--acid)}
.sec-head .label::before{content:"";width:22px;height:2px;background:var(--acid)}
h2{
  font-family:var(--f-display);font-size:var(--step-4);font-weight:800;font-stretch:78%;
  letter-spacing:-.02em;line-height:.95;margin:.9rem 0 0;text-wrap:balance;
}
main > section h2,.band h2{text-transform:uppercase}
h3{font-family:var(--f-display);font-size:var(--step-2);font-weight:700;letter-spacing:-.015em;line-height:1.1;margin:0;text-wrap:balance}
.sec-head p{color:var(--muted);font-size:var(--step-1);margin:1.25rem 0 0;max-width:58ch;text-wrap:pretty}


/* ==========================================================================
   gear: bento
   ========================================================================== */
.bento{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:1rem}
.card{
  position:relative;overflow:hidden;isolation:isolate;
  grid-column:span 4;
  background:var(--surface-2);
  border:1px solid var(--line);
  border-radius:var(--r);
  padding:1.6rem;min-height:300px;
  display:flex;flex-direction:column;gap:.85rem;
  transform:perspective(1000px) rotateX(var(--rx,0deg)) rotateY(var(--ry,0deg));
  transition:transform .5s var(--ease-out),border-color .25s;
}
.card::before{
  content:"";position:absolute;inset:0;z-index:-1;opacity:0;
  background:radial-gradient(420px circle at var(--mx,50%) var(--my,50%),rgba(212,255,58,.13),transparent 60%);
  transition:opacity .3s;
}
.card:hover{border-color:var(--acid-line)}
.card:hover::before{opacity:1}
.card-1{grid-column:span 7;grid-row:span 2;min-height:520px;padding:2.2rem;
  background:
    radial-gradient(70% 60% at 100% 100%,rgba(212,255,58,.12),transparent 70%),
    var(--surface-2)}
.card-1 h3{font-size:clamp(2rem,3.6vw,3rem);font-stretch:78%;font-weight:800;text-transform:uppercase;line-height:.95;margin-top:auto}
.card-1 p{font-size:1.1rem;max-width:40ch}
.card-2,.card-3{grid-column:span 5}
.card-top{display:flex;align-items:flex-start;justify-content:space-between}
.card .glyph{width:52px;height:52px;color:var(--text)}
.card-1 .glyph{width:120px;height:120px;filter:drop-shadow(0 0 18px rgba(212,255,58,.35))}
.card-1 .card-top{flex:1}
.card-idx{font-family:var(--f-mono);font-size:.72rem;color:var(--muted);letter-spacing:.1em}
.card-score{
  position:absolute;right:-.06em;bottom:-.2em;z-index:-1;
  font-family:var(--f-display);font-weight:800;font-stretch:75%;
  font-size:clamp(7rem,12vw,10rem);line-height:1;letter-spacing:-.04em;
  color:transparent;-webkit-text-stroke:1px var(--line-2);
  transition:color .4s,-webkit-text-stroke-color .4s,transform .6s var(--ease-out);
  pointer-events:none;
}
.card-1 .card-score{font-size:clamp(10rem,24vw,21rem);-webkit-text-stroke:1.5px var(--acid-line);right:-.02em;bottom:-.14em}
.card:hover .card-score{-webkit-text-stroke-color:var(--acid-line);transform:translateY(-6px)}
.card p{margin:0;color:var(--muted);font-size:.97rem;max-width:46ch}
.tags{display:flex;gap:.4rem;flex-wrap:wrap;margin-top:auto;padding-top:.4rem}
.card-1 .tags{margin-top:0}
.tag{font-family:var(--f-mono);font-size:.75rem;letter-spacing:.08em;text-transform:uppercase;color:var(--text);background:var(--surface-3);border:1px solid var(--line);padding:.25rem .5rem;border-radius:var(--r-xs)}
.card-foot{display:flex;align-items:baseline;gap:.75rem;flex-wrap:wrap;padding-top:.85rem;border-top:1px solid var(--line)}
.price{font-family:var(--f-display);font-weight:800;font-stretch:80%;font-size:1.5rem;letter-spacing:-.01em;color:var(--acid);font-variant-numeric:tabular-nums}
@media (max-width:1040px){
  .bento{grid-template-columns:repeat(2,minmax(0,1fr))}
  .card,.card-2,.card-3{grid-column:span 1}
  .card-1{grid-column:span 2;grid-row:auto;min-height:420px}
}
@media (max-width:640px){
  .bento{grid-template-columns:1fr}
  .card,.card-1{grid-column:auto;min-height:0}
}

/* ==========================================================================
   comparison
   ========================================================================== */
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);background:var(--surface-2)}
table{border-collapse:collapse;width:100%;min-width:720px}
th,td{padding:1rem 1.15rem;text-align:left;border-bottom:1px solid var(--line);font-size:.94rem}
thead th{font-family:var(--f-mono);font-size:.75rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);font-weight:400;background:var(--surface-3)}
tbody tr:last-child th,tbody tr:last-child td{border-bottom:0}
tbody th{font-weight:600;font-family:var(--f-body)}
tbody tr{transition:background-color .2s}
tbody tr:hover{background:rgba(212,255,58,.04)}
td.num{font-family:var(--f-mono);font-variant-numeric:tabular-nums}
.yes{color:var(--acid);font-weight:600}
.no{color:var(--muted)}

.meter{display:flex;flex-direction:column;gap:.4rem;min-width:110px}
.meter i{
  display:block;height:5px;border-radius:3px;background:var(--line);position:relative;overflow:hidden;
}
.meter i::after{
  content:"";position:absolute;inset:0;border-radius:inherit;
  transform-origin:left;transform:scaleX(var(--v));
  transition:transform 1.1s var(--ease-out);
}
.meter.lat i::after{background:var(--muted)}
.meter.score i::after{background:var(--acid)}
.meter.score span{color:var(--acid);font-weight:600}
.cmp:not(.is-in) .meter i::after{transform:scaleX(0)}
.cmp tbody tr:nth-child(2) .meter i::after{transition-delay:.06s}
.cmp tbody tr:nth-child(3) .meter i::after{transition-delay:.12s}
.cmp tbody tr:nth-child(4) .meter i::after{transition-delay:.18s}
.cmp tbody tr:nth-child(5) .meter i::after{transition-delay:.24s}
.cmp tbody tr:nth-child(6) .meter i::after{transition-delay:.3s}
.state{display:inline-flex;align-items:center;gap:.45rem;font-family:var(--f-mono);font-size:.78rem;text-transform:uppercase;letter-spacing:.08em}
.state::before{content:"";width:8px;height:8px;border-radius:50%}
.state.ok::before{background:var(--acid);box-shadow:0 0 8px var(--acid)}
.state.mid::before{background:var(--warn)}
.state.bad::before{background:var(--hot)}
.state.ok{color:var(--acid)}
.state.mid{color:var(--warn)}
.state.bad{color:var(--hot)}

/* ==========================================================================
   routines: a wire with a packet travelling through three stations
   ========================================================================== */
.flow{position:relative;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem;padding-top:3.25rem}
.wire{position:absolute;left:1.6rem;right:1.6rem;top:1.1rem;height:2px;background:var(--line-2);overflow:hidden;border-radius:2px}
.wire i{
  position:absolute;inset:0;
  background:linear-gradient(90deg,transparent 0 42%,var(--acid) 50%,transparent 58%);
  animation:packet 3.2s cubic-bezier(.65,0,.35,1) infinite;
}
@keyframes packet{from{transform:translateX(-60%)}to{transform:translateX(60%)}}
.step{
  position:relative;min-width:0;background:var(--surface-2);border:1px solid var(--line);border-radius:var(--r);
  padding:1.6rem;display:flex;flex-direction:column;gap:.7rem;
  transition:border-color .25s,transform .4s var(--ease-out);
}
.step:hover{border-color:var(--acid-line);transform:translateY(-4px)}
.step::before{
  content:"";position:absolute;left:1.6rem;top:calc(-3.25rem + 1.1rem - 6px);
  width:14px;height:14px;border-radius:50%;background:var(--surface);border:2px solid var(--acid);
  box-shadow:0 0 0 5px var(--surface),0 0 18px var(--glow);
}
.step-n{
  font-family:var(--f-display);font-weight:800;font-stretch:75%;font-size:4.2rem;line-height:.8;
  letter-spacing:-.03em;color:var(--acid);
}
.step .idx{font-family:var(--f-mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.step p{margin:0;color:var(--muted);font-size:.96rem}
.code{
  font-family:var(--f-mono);font-size:.8rem;background:var(--ink);border:1px solid var(--line);
  border-radius:8px;padding:.7rem .85rem;color:var(--acid);overflow-x:auto;white-space:nowrap;margin-top:auto;
}
.code .prompt{color:var(--muted);margin-right:.5rem}
@media (max-width:900px){
  .flow{grid-template-columns:minmax(0,1fr);padding-top:0;padding-left:2.4rem}
  .wire{left:.6rem;right:auto;top:0;bottom:0;width:2px;height:auto}
  .wire i{background:linear-gradient(180deg,transparent 0 42%,var(--acid) 50%,transparent 58%);animation-name:packet-y}
  .step::before{left:calc(-2.4rem + .6rem - 6px);top:1.8rem}
}
@keyframes packet-y{from{transform:translateY(-60%)}to{transform:translateY(60%)}}

/* ==========================================================================
   guides list: full-bleed rows that flood with acid on hover
   ========================================================================== */
.guide-list{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.guide{
  position:relative;isolation:isolate;overflow:hidden;
  display:grid;grid-template-columns:4.5rem 176px minmax(0,1fr) auto;gap:1.75rem;align-items:center;
  padding:1.6rem 1.25rem;border-bottom:1px solid var(--line);
  text-decoration:none;color:var(--text);
  transition:color .3s var(--ease-out);
}
.guide::before{
  content:"";position:absolute;inset:0;z-index:-1;background:var(--acid);
  transform:scaleY(0);transform-origin:bottom;transition:transform .45s var(--ease-out);
}
.guide:hover::before,.guide:focus-visible::before{transform:scaleY(1);transform-origin:top}
.guide:hover,.guide:focus-visible{color:var(--acid-ink)}
.guide:focus-visible{outline-offset:-2px}
.g-n{font-family:var(--f-display);font-weight:800;font-stretch:75%;font-size:2.6rem;line-height:1;letter-spacing:-.03em;color:var(--line-2);transition:color .3s}
.guide:hover .g-n,.guide:focus-visible .g-n{color:var(--acid-ink)}
.guide .kicker{display:block;margin-bottom:.4rem;font-family:var(--f-mono);font-size:.75rem;letter-spacing:.14em;text-transform:uppercase;color:var(--acid);transition:color .3s}
.guide:hover .kicker,.guide:focus-visible .kicker{color:var(--acid-ink)}
.guide h3{margin:0 0 .4rem;font-size:clamp(1.25rem,2.3vw,1.85rem);font-stretch:85%}
.guide p{margin:0;color:var(--muted);font-size:.95rem;max-width:70ch;transition:color .3s}
.guide:hover p,.guide:focus-visible p{color:rgba(11,12,15,.78)}
.guide .arrow{
  display:grid;place-items:center;width:52px;height:52px;border-radius:50%;
  border:1px solid var(--line-2);font-size:1.2rem;
  transition:transform .4s var(--ease-out),background-color .3s,border-color .3s,color .3s;
}
.guide:hover .arrow,.guide:focus-visible .arrow{background:var(--acid-ink);color:var(--acid);border-color:var(--acid-ink);transform:rotate(-45deg)}
@media (max-width:820px){
  .guide{grid-template-columns:auto minmax(0,1fr) 96px;gap:1rem;padding:1.3rem .5rem;align-items:start}
  .g-n{font-size:2rem}
  .g-img{order:3}
  .guide .arrow{display:none}
}
.more{margin-top:2.25rem}

/* ==========================================================================
   faq
   ========================================================================== */
.faq-block{border-top:1px solid var(--line)}
details{border-bottom:1px solid var(--line)}
details summary{
  cursor:pointer;list-style:none;padding:1.5rem 0;
  display:flex;align-items:center;justify-content:space-between;gap:1.5rem;
  font-family:var(--f-display);font-weight:700;font-size:clamp(1.15rem,2vw,1.55rem);letter-spacing:-.01em;line-height:1.2;
  transition:color .2s;
}
details summary:hover{color:var(--acid)}
details summary::-webkit-details-marker{display:none}
details summary i{
  position:relative;flex:none;width:44px;height:44px;border-radius:50%;border:1px solid var(--line-2);
  transition:transform .35s var(--ease-out),background-color .25s,border-color .25s;
}
details summary i::before,details summary i::after{
  content:"";position:absolute;left:50%;top:50%;width:14px;height:2px;margin:-1px 0 0 -7px;background:currentColor;
}
details summary i::after{transform:rotate(90deg)}
details[open] summary i{transform:rotate(135deg);background:var(--acid);border-color:var(--acid);color:var(--acid-ink)}
details .ans{padding:0 4rem 1.6rem 0;color:var(--muted);max-width:75ch}
details .ans p{margin:0}
details[open] .ans{animation:drop .35s var(--ease-out)}
@keyframes drop{from{opacity:0;transform:translateY(-6px)}}

/* ==========================================================================
   newsletter band: the one loud block
   ========================================================================== */
.letter{border-top:0}
.band{
  position:relative;overflow:hidden;isolation:isolate;
  border-radius:var(--r-lg);
  background:var(--acid);color:var(--acid-ink);
  padding:clamp(2.25rem,6vw,5rem);
}
.band::before{
  content:"";position:absolute;inset:0;z-index:-1;opacity:.5;
  background-image:radial-gradient(rgba(11,12,15,.28) 1px,transparent 1.4px);
  background-size:14px 14px;
  -webkit-mask-image:radial-gradient(70% 90% at 100% 100%,#000,transparent 70%);
  mask-image:radial-gradient(70% 90% at 100% 100%,#000,transparent 70%);
}
.band .label{color:rgba(11,12,15,.72)}
.band h2{font-size:clamp(2.6rem,8.4vw,7.2rem);line-height:.86;margin:.9rem 0 0;max-width:16ch}
.band-row{display:flex;align-items:flex-end;justify-content:space-between;gap:2rem;margin-top:2.25rem;flex-wrap:wrap}
.band p{margin:0;max-width:52ch;color:rgba(11,12,15,.82);font-size:1.05rem}
.band :focus-visible{outline-color:var(--acid-ink)}

/* ==========================================================================
   footer
   ========================================================================== */
.site-foot{border-top:1px solid var(--line);padding:2.5rem 0 0;color:var(--muted);font-size:.92rem;overflow:hidden}
.foot{display:flex;gap:1.75rem;flex-wrap:wrap;align-items:center}
.foot a{display:inline-flex;align-items:center;min-height:44px;text-decoration:none;transition:color .2s}
.foot a:hover{color:var(--acid)}
.foot .label{margin-left:auto;display:inline-flex;align-items:center;gap:.6rem}
.foot .dot{width:7px;height:7px}
.wordmark{
  margin:2rem 0 -.16em;
  font-family:var(--f-display);font-weight:800;font-stretch:75%;text-transform:uppercase;
  font-size:clamp(3rem,15.4vw,15rem);line-height:.8;letter-spacing:-.035em;white-space:nowrap;
  color:transparent;-webkit-text-stroke:1px var(--line-2);user-select:none;
}
.wordmark span{color:var(--acid);-webkit-text-stroke:0}

/* ==========================================================================
   language switcher
   ========================================================================== */
.lang{
  display:inline-flex;align-items:center;
  border:1px solid var(--line-2);border-radius:999px;overflow:hidden;
  font-family:var(--f-mono);font-size:.75rem;letter-spacing:.1em;text-transform:uppercase;
}
.lang a{padding:.38rem .66rem;text-decoration:none;color:var(--muted);transition:background-color .2s,color .2s}
.lang a:hover{color:var(--text);background:var(--surface-3)}
.lang a[aria-current="true"]{background:var(--acid);color:var(--acid-ink);font-weight:600}

/* ==========================================================================
   article + index headers
   ========================================================================== */
.art-head{
  position:relative;overflow:hidden;isolation:isolate;
  padding:clamp(3rem,7vw,6rem) 0 2.5rem;
  border-bottom:1px solid var(--line);
  background:radial-gradient(70% 90% at 90% 0%,rgba(212,255,58,.07),transparent 60%);
}
.art-head::after{
  content:"";position:absolute;inset:auto 0 0 0;height:60%;z-index:-1;pointer-events:none;
  background:linear-gradient(to bottom,transparent,var(--surface));
}
.art-head .wrap{pointer-events:none}
.art-head a{pointer-events:auto}
.crumbs{display:flex;gap:.25rem .6rem;align-items:center;font-family:var(--f-mono);font-size:.75rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);flex-wrap:wrap}
.crumbs a{display:inline-flex;align-items:center;min-height:32px;text-decoration:none;color:var(--muted);transition:color .2s}
.crumbs a:hover{color:var(--acid)}
.crumbs span:last-child{color:var(--acid)}
.art-head h1{font-size:clamp(2.4rem,6.2vw,5.2rem);line-height:.92;margin-top:1.25rem;max-width:18ch}
.art-head-xl h1{text-transform:uppercase;font-size:clamp(3rem,9vw,7.6rem);line-height:.86;max-width:14ch}
.art-sub{font-size:clamp(1.08rem,1.5vw,1.25rem);color:var(--muted);max-width:62ch;margin:1.5rem 0 0;text-wrap:pretty}
.art-meta{display:flex;gap:.6rem;flex-wrap:wrap;margin-top:2rem}
.art-meta .label{border:1px solid var(--line-2);border-radius:999px;padding:.35rem .75rem;background:rgba(20,22,27,.7)}
.art-meta .label:first-child{border-color:var(--acid-line);color:var(--acid)}
section.flush{padding-top:clamp(2rem,4vw,3rem)}

/* ==========================================================================
   article body
   ========================================================================== */
.art-body{display:grid;grid-template-columns:minmax(0,72ch) 260px;justify-content:start;gap:clamp(3rem,5vw,6rem);align-items:start;padding:3rem 0 6rem}
@media (max-width:980px){.art-body{grid-template-columns:1fr;gap:2rem}}
.prose{max-width:70ch;min-width:0;font-size:1.08rem;line-height:1.7}
.prose h2{font-size:var(--step-3);line-height:1.05;margin:3.5rem 0 1.1rem;scroll-margin-top:90px;font-stretch:82%}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:1.3rem;margin:2.2rem 0 .7rem}
.prose p{margin:0 0 1.2rem;text-wrap:pretty}
.prose ul,.prose ol{margin:0 0 1.4rem;padding-left:1.3rem;display:flex;flex-direction:column;gap:.55rem}
.prose li::marker{color:var(--acid)}
.prose a{color:var(--acid);text-underline-offset:3px;text-decoration-thickness:1px}
.prose a:hover{text-decoration-thickness:2px}
.prose strong{font-weight:700;color:var(--text)}
.prose .tablewrap{margin:0 0 1.75rem}
.prose .code{margin:0 0 1.6rem;white-space:pre-wrap}
.prose > .guide-list{margin-top:.5rem}
.prose .guide{grid-template-columns:3.2rem 128px minmax(0,1fr) auto;gap:1.25rem;padding:1.25rem .75rem}
.prose .guide .kicker{display:none}
.prose .guide .g-n{font-size:2rem}
.prose .guide h3{font-size:1.25rem;margin:0 0 .3rem}
.prose .guide .arrow{width:42px;height:42px}
@media (max-width:820px){.prose .guide{grid-template-columns:auto minmax(0,1fr) 88px}}

.callout{
  border:1px solid var(--line-2);border-radius:var(--r);background:var(--surface-2);
  padding:1.2rem 1.4rem;margin:0 0 1.75rem;
}
.callout b{display:flex;align-items:center;gap:.65rem;font-family:var(--f-display);font-size:1.08rem;letter-spacing:-.01em;margin-bottom:.45rem}
.callout .ico{
  display:grid;place-items:center;flex:none;width:26px;height:26px;border-radius:50%;
  background:var(--warn);color:var(--acid-ink);font-family:var(--f-mono);font-size:.85rem;font-weight:600;
}
.callout.data .ico{background:var(--acid)}
.callout p{margin:0;color:var(--muted);font-size:.98rem}
.callout.data{border-color:var(--acid-line);background:linear-gradient(135deg,rgba(212,255,58,.07),transparent 60%),var(--surface-2)}

.toc{position:sticky;top:90px;font-size:.9rem;display:flex;flex-direction:column;gap:.15rem;padding:1.25rem;border:1px solid var(--line);border-radius:var(--r);background:var(--surface-2)}
.toc-d summary{list-style:none;margin-bottom:.6rem}
.toc-d summary::-webkit-details-marker{display:none}
.toc-links{display:flex;flex-direction:column;gap:.15rem}
.toc a{position:relative;text-decoration:none;color:var(--muted);line-height:1.35;padding:.4rem .6rem .4rem .9rem;border-radius:8px;transition:color .2s,background-color .2s}
.toc a:hover{color:var(--text);background:var(--surface-3)}
.toc a::before{
  content:"";position:absolute;left:0;top:50%;width:6px;height:6px;margin-top:-3px;border-radius:50%;
  background:var(--acid);transform:scale(0);transition:transform .25s var(--ease-spring);
}
.toc a.active{color:var(--acid);font-weight:600}
.toc a.active::before{transform:scale(1)}
@media (max-width:980px){.toc{position:static;order:-1}}

.faq{margin-top:3.5rem;padding-top:0}
.faq h2{margin-top:0}

/* lead image */
.lead{margin:0 0 2rem;border-radius:var(--r);overflow:hidden;border:1px solid var(--line)}
.lead img{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;background:var(--surface-2);filter:saturate(1.05) contrast(1.04)}
.lead figcaption{
  padding:.75rem 1rem;background:var(--surface-2);border-top:1px solid var(--line);
  font-family:var(--f-mono);font-size:.75rem;letter-spacing:.02em;color:var(--muted);line-height:1.6;
}
.lead figcaption a{color:var(--muted);text-underline-offset:2px}
.lead figcaption a:hover{color:var(--acid)}

/* answer-first block (the citable passage) */
.answer{
  position:relative;border:1px solid var(--acid-line);border-radius:var(--r);
  background:linear-gradient(135deg,rgba(212,255,58,.1),rgba(212,255,58,.02) 55%),var(--surface-2);
  padding:1.5rem 1.6rem;margin:0 0 2rem;
}
.answer .label{display:inline-block;margin-bottom:.7rem;color:var(--acid-ink);background:var(--acid);padding:.25rem .6rem;border-radius:var(--r-xs);font-weight:600}
.answer p{margin:0;font-size:1.14rem;line-height:1.6;color:var(--text)}

.takeaways{border:1px solid var(--line);border-radius:var(--r);padding:1.5rem 1.6rem;margin:0 0 2.5rem;background:var(--surface-2)}
.takeaways .label{display:block;margin-bottom:1rem}
.takeaways ol{margin:0;padding:0;list-style:none;counter-reset:tk;display:grid;gap:1rem}
.takeaways li{counter-increment:tk;position:relative;display:block;padding-left:3.1rem;font-size:1rem}
.takeaways li::before{
  content:counter(tk,decimal-leading-zero);position:absolute;left:0;top:-.05em;
  font-family:var(--f-display);font-weight:800;font-stretch:75%;font-size:1.7rem;line-height:1;color:var(--acid);
}

/* ==========================================================================
   diagrams (classes emitted by diagrams.py)
   ========================================================================== */
.diagram{
  margin:0 0 1.9rem;
  border:1px solid var(--line);border-radius:var(--r);
  background:var(--surface-2);padding:1.35rem 1.1rem 1rem;
  overflow-x:auto;
}
.diagram svg{display:block;width:100%;min-width:620px;height:auto}
.diagram figcaption{
  margin-top:.8rem;padding-top:.8rem;border-top:1px solid var(--line);
  font-size:.88rem;color:var(--muted);
}
.d-axis{font-family:var(--f-mono);font-size:11px;fill:var(--muted)}
.d-title{font-family:var(--f-mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;fill:var(--muted)}
.d-legend{font-family:var(--f-mono);font-size:11.5px;fill:var(--muted)}
.d-wifi{font-family:var(--f-body);font-size:14px;font-weight:600;fill:var(--text)}
.d-good{font-family:var(--f-mono);font-size:12.5px;font-weight:600;fill:var(--d-good)}
.d-mid{font-family:var(--f-mono);font-size:12px;fill:var(--d-mid)}
.d-bad{font-family:var(--f-mono);font-size:12px;fill:var(--d-bad)}
.d-good-line{stroke:var(--d-good)}
.d-mid-line{stroke:var(--d-mid)}
.d-bad-line{stroke:var(--d-bad)}
.d-good-fill{fill:var(--d-good)}
.d-mid-fill{fill:var(--d-mid)}
.d-bad-fill{fill:var(--d-bad)}
.d-warn-fill{fill:var(--d-warn)}
.d-warn{font-family:var(--f-mono);font-size:12.5px;font-weight:600;fill:var(--d-warn)}
.d-warn-line{stroke:var(--d-warn)}
.d-row{font-family:var(--f-body);font-size:13.5px;fill:var(--text)}
.d-num{font-family:var(--f-mono);font-size:12.5px;fill:var(--text)}
.d-fix{font-family:var(--f-body);font-size:12.5px;fill:var(--muted)}
.d-colhead{font-family:var(--f-display);font-size:13.5px;font-weight:700;letter-spacing:-.01em;fill:var(--text)}

/* ==========================================================================
   reading progress, skip link, back to top
   ========================================================================== */
#progress{
  position:fixed;top:0;left:0;height:3px;width:100%;z-index:var(--z-progress);
  background:var(--acid);box-shadow:0 0 12px var(--glow);
  transform-origin:left;transform:scaleX(0);
}
.skip{
  position:absolute;left:-9999px;top:0;z-index:var(--z-skip);
  background:var(--acid);color:var(--acid-ink);padding:.6rem 1rem;
  border-radius:0 0 8px 0;font-weight:700;text-decoration:none;
}
.skip:focus{left:0}
#totop{
  position:fixed;right:1.25rem;bottom:1.25rem;z-index:var(--z-float);
  width:48px;height:48px;border-radius:50%;
  border:0;background:var(--acid);color:var(--acid-ink);
  display:grid;place-items:center;cursor:pointer;
  opacity:0;pointer-events:none;transform:translateY(10px) scale(.95);
  transition:opacity .25s var(--ease-out),transform .25s var(--ease-out);
  font-family:var(--f-mono);font-size:1.05rem;font-weight:600;
}
#totop.show{opacity:1;pointer-events:auto;transform:none}
#totop:hover{transform:translateY(-3px)}
#totop:active{transform:scale(.95)}

/* ==========================================================================
   motion: split headline + scroll reveal (classes added by app.js only)
   ========================================================================== */
.js [data-split] .w{display:inline-block;overflow:hidden;vertical-align:top;padding-bottom:.06em;margin-bottom:-.06em}
.js [data-split] .wi{display:inline-block;transform:translateY(108%);transition:transform 1s var(--ease-out);transition-delay:calc(var(--i) * 55ms + 80ms)}
.js [data-split].in .wi{transform:none}
.js [data-split] em::before{transform:scaleX(0);transition:transform .7s var(--ease-out) .75s}
.js [data-split].in em::before{transform:scaleX(1)}

.js .rv{opacity:0;transform:translateY(28px);transition:opacity .7s var(--ease-out),transform .8s var(--ease-out);transition-delay:var(--d,0s)}
.js .rv.is-in{opacity:1;transform:none}
.js .card.rv,.js .console.rv{transform:translateY(40px) perspective(1000px)}
.js .card.rv.is-in{transform:perspective(1000px) rotateX(var(--rx,0deg)) rotateY(var(--ry,0deg));transition:opacity .7s var(--ease-out),transform .5s var(--ease-out)}
.js .guide.rv{transform:translateX(-24px)}
.js .guide.rv.is-in{transform:none}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition-duration:.01ms !important;transition-delay:0s !important}
  html{scroll-behavior:auto}
  .js [data-split] .wi{transform:none}
  .js [data-split] em::before{transform:none}
  .js .rv{opacity:1;transform:none}
  .card,.console{transform:none !important}
}


/* ==========================================================================
   RESPONSIVE LAYER
   Four intentional layouts, not one layout squeezed:
   phone (<641) · tablet (641-980) · laptop (981-1599) · big screen (1600+).
   Component tweaks in between follow where the content actually breaks.
   ========================================================================== */

/* ---------- scroll affordance for anything wider than its box ---------- */
.diagram,.tablewrap{
  scrollbar-width:thin;scrollbar-color:var(--line-2) transparent;
  background:
    linear-gradient(90deg,var(--surface-2) 30%,rgba(20,22,27,0)) left/40px 100% no-repeat local,
    linear-gradient(270deg,var(--surface-2) 30%,rgba(20,22,27,0)) right/40px 100% no-repeat local,
    radial-gradient(farthest-side at 0 50%,rgba(0,0,0,.55),transparent) left/14px 100% no-repeat scroll,
    radial-gradient(farthest-side at 100% 50%,rgba(0,0,0,.55),transparent) right/14px 100% no-repeat scroll,
    var(--surface-2);
}

/* ---------- big screens: a wider stage and type that fills it ---------- */
@media (min-width:1600px){
  :root{
    --maxw:1440px;
    --step-5:clamp(7.4rem,6.6vw,9.6rem);
    --step-4:clamp(4.6rem,4vw,5.8rem);
    --step-0:1.125rem;
  }
  .hero-grid{grid-template-columns:minmax(0,1fr) 460px}
  .lede{font-size:1.35rem;max-width:56ch}
  .card{padding:1.9rem;min-height:330px}
  .card-1{min-height:600px;padding:2.6rem}
  .mm-in{padding:2.5rem 0 2.75rem}
  .art-body{grid-template-columns:minmax(0,74ch) 300px}
  .prose{font-size:1.15rem;max-width:72ch}
  .art-head-xl h1{font-size:clamp(7rem,6.4vw,9rem)}
}
@media (min-width:1900px){
  :root{--maxw:1560px}
  .band h2{font-size:8.4rem}
}

/* ---------- laptop: the 981-1279 squeeze ---------- */
@media (max-width:1279px) and (min-width:981px){
  .nav-in{gap:1rem}
  .nav-end{margin-left:.75rem;gap:.6rem}
  .mi-btn,.mi-link{padding:.6rem .7rem}
  .hero-grid{grid-template-columns:minmax(0,1fr) 360px}
}

/* ---------- comparison + article tables become cards when columns run out ---------- */
@media (max-width:860px){
  table.stack{min-width:0;display:block}
  table.stack thead{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
  table.stack tbody{display:grid;gap:.75rem;padding:0}
  table.stack tr{
    display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:.1rem 1rem;
    padding:1rem 1.1rem;border:1px solid var(--line);border-radius:12px;background:var(--surface-2);
  }
  table.stack tbody tr:hover{background:var(--surface-2)}
  table.stack th[scope=row]{
    grid-column:1/-1;padding:0 0 .65rem;margin-bottom:.35rem;border-bottom:1px solid var(--line);
    font-family:var(--f-display);font-size:1.15rem;font-weight:700;letter-spacing:-.01em;
  }
  table.stack td{display:flex;flex-direction:column;gap:.2rem;padding:.55rem 0;border:0;font-size:.95rem;min-width:0;overflow-wrap:anywhere}
  table.stack td::before{
    content:attr(data-label);
    font-family:var(--f-mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);
  }
  table.stack .meter{min-width:0}
  .tablewrap:has(table.stack){overflow:visible;border:0;border-radius:0;background:none}
  /* article tables with 2-3 long text columns read better one value per line */
  .prose .tablewrap[data-cols="2"] table.stack tr,
  .prose .tablewrap[data-cols="3"] table.stack tr{grid-template-columns:minmax(0,1fr)}
}
@media (min-width:600px) and (max-width:860px){
  /* tablet: two device cards side by side */
  table.cmp.stack tbody{grid-template-columns:repeat(2,minmax(0,1fr))}
}

/* ---------- tablet (641-980) ---------- */
@media (max-width:980px){
  :root{--nav-h:64px}
  .nav-in{height:var(--nav-h)}
  .hero{min-height:0;padding-top:2rem}
  .mega{max-width:16ch}
  .art-body{padding-top:2rem}
  .toc{padding:0;background:none;border:0}
  .toc-d{border:1px solid var(--line);border-radius:var(--r);background:var(--surface-2)}
  .toc-d summary{
    display:flex;align-items:center;justify-content:space-between;gap:1rem;
    min-height:52px;padding:0 1.1rem;margin:0;cursor:pointer;color:var(--text);
  }
  .toc-d summary::after{content:"+";font-size:1.2rem;color:var(--acid);transition:transform .25s var(--ease-out)}
  .toc-d[open] summary::after{transform:rotate(45deg)}
  .toc-links{padding:0 .6rem .8rem}
  .toc a{min-height:40px;display:flex;align-items:center}
}
@media (min-width:641px) and (max-width:1040px){
  /* odd card out: let the last device span the row instead of leaving a hole */
  .card-6{grid-column:1/-1;min-height:0}
  .card-6 .card-score{font-size:9rem}
}
@media (min-width:641px) and (max-width:980px){
  .hero-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:start}
  .hero-copy{grid-column:1/-1}
  .hero-copy .mega{font-size:clamp(3.6rem,10.5vw,6.4rem)}
  .console{grid-column:1/-1}
  .flow{grid-template-columns:repeat(3,minmax(0,1fr));padding-left:0;padding-top:3.25rem}
  .flow .wire{left:1.6rem;right:1.6rem;top:1.1rem;bottom:auto;width:auto;height:2px}
  .flow .wire i{background:linear-gradient(90deg,transparent 0 42%,var(--acid) 50%,transparent 58%);animation-name:packet}
  .step::before{left:1.6rem;top:calc(-3.25rem + 1.1rem - 6px)}
  .step{padding:1.25rem}
  .step-n{font-size:3.4rem}
  .code{white-space:normal;overflow-wrap:anywhere}
  .band-row{align-items:flex-start;flex-direction:column}
}

/* ---------- phone (<641) ---------- */
@media (max-width:640px){
  :root{--step-0:1.0625rem}
  section{padding:clamp(3.5rem,14vw,5rem) 0}
  .sec-head{margin-bottom:2rem}
  .sec-head p{font-size:1.08rem}
  .sec-n{font-size:5.5rem;top:-.05em;opacity:.7}
  h2{font-size:clamp(2.1rem,9.6vw,2.9rem)}

  /* hero: thumb-first */
  .hero{padding:1.5rem 0 2rem}
  .hero-in{gap:1.75rem}
  .hero-top .chip{font-size:.72rem;letter-spacing:.06em}
  .mega{font-size:clamp(2.7rem,13.2vw,3.6rem);margin-bottom:1.1rem}
  .lede{font-size:1.06rem;margin-bottom:1.4rem}
  .hero-cta{flex-direction:column}
  .hero-cta .btn{justify-content:center;width:100%}
  .console .row{padding:.75rem .95rem;gap:.6rem}
  .console .row .name{font-size:.92rem}
  .hero-meta{grid-template-columns:repeat(3,minmax(0,1fr))}
  .metric,.metric + .metric{padding:1rem .5rem 0 0;margin:0;border-top:0}
  .metric + .metric{padding-left:.75rem;border-left:1px solid var(--line)}
  .metric b{font-size:clamp(1.45rem,7vw,2rem)}
  .metric .label{font-size:.72rem;letter-spacing:.04em}

  .ticker{padding:2.2rem 0}
  .marquee{font-size:1.5rem;padding:.7rem 0}

  /* cards */
  .card,.card-1{padding:1.35rem}
  .card-1{min-height:0}
  .card-1 .glyph{width:72px;height:72px}
  .card-1 h3{margin-top:1.25rem;font-size:2rem}
  .card-1 p{font-size:1rem}
  .card-score{font-size:6.5rem}
  .card-1 .card-score{font-size:8.5rem}
  .price{font-size:1.35rem}

  /* routines: vertical timeline, nothing allowed to push wider */
  .step{padding:1.25rem}
  .step-n{font-size:3.2rem}
  .code{white-space:normal;overflow-wrap:anywhere;line-height:1.5}

  /* guides */
  .guide{grid-template-columns:auto minmax(0,1fr) 80px;padding:1.15rem 0;gap:.9rem}
  .g-n{font-size:1.6rem}
  .guide h3{font-size:1.2rem}
  .guide p{font-size:.94rem}
  .more .btn{width:100%;justify-content:center}

  /* faq */
  details summary{padding:1.15rem 0;gap:1rem;font-size:1.12rem}
  details summary i{width:40px;height:40px}
  details .ans{padding:0 0 1.25rem}

  /* newsletter */
  .band{padding:2rem 1.4rem;border-radius:18px}
  .band h2{font-size:clamp(2.4rem,12vw,3.4rem)}
  .band-row{flex-direction:column;align-items:stretch;gap:1.5rem}
  .band .btn{justify-content:center}

  /* footer */
  .foot{gap:0 1.25rem}
  .foot .label{margin-left:0;width:100%;padding:.5rem 0 0}
  .wordmark{font-size:clamp(3rem,16.4vw,7rem);margin-top:1.5rem}

  /* articles */
  .art-head{padding:2rem 0 1.75rem}
  .art-head h1{font-size:clamp(2.1rem,9.4vw,2.9rem);line-height:.98}
  .art-head-xl h1{font-size:clamp(2.6rem,12.5vw,3.6rem);line-height:.9}
  .art-sub{font-size:1.04rem;margin-top:1.1rem}
  .art-meta{flex-direction:column;gap:.35rem;margin-top:1.4rem}
  .art-meta .label{border:0;background:none;padding:0;font-size:.72rem}
  .art-meta .label:first-child{color:var(--acid)}
  .prose{font-size:1.05rem;line-height:1.68}
  .prose h2{margin:2.6rem 0 .9rem;font-size:clamp(1.65rem,7.4vw,2.1rem)}
  .answer,.takeaways,.callout{padding:1.15rem 1.1rem}
  .answer p{font-size:1.06rem}
  .takeaways li{padding-left:2.6rem}
  .takeaways li::before{font-size:1.45rem}
  .lead{margin-inline:calc(var(--gutter) * -1);border-radius:0;border-inline:0}
  .diagram{margin-inline:calc(var(--gutter) * -1);border-radius:0;border-inline:0;padding-inline:var(--gutter)}
  .diagram svg{min-width:560px}
  .prose .guide{grid-template-columns:auto minmax(0,1fr) 80px;padding:1.1rem 0}
  #totop{right:1rem;bottom:calc(1rem + env(safe-area-inset-bottom,0px))}
}

/* ---------- very narrow (<=360) ---------- */
@media (max-width:360px){
  .brand-txt{font-size:.88rem}
  .burger-txt{display:none}
  .burger{padding:0 .8rem}
  .hero-meta{grid-template-columns:1fr 1fr}
  .metric:last-child{grid-column:1/-1;border-left:0;padding-left:0;border-top:1px solid var(--line);margin-top:.9rem}
  .mm-devs{grid-template-columns:1fr}
}

/* ---------- short landscape phones: keep the drawer usable ---------- */
@media (max-height:500px) and (max-width:980px){
  .mi-btn,.mi-link{padding:.75rem 0;font-size:1.4rem}
}


/* ==========================================================================
   Commons photos: guide thumbnails, in-article figures, credits page
   ========================================================================== */
.g-img{
  display:block;aspect-ratio:16/9;border-radius:10px;overflow:hidden;
  background:var(--surface-3);border:1px solid var(--line);
}
.g-img img{display:block;width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease-out),filter .3s}
.guide:hover .g-img img,.guide:focus-visible .g-img img{transform:scale(1.06)}
.guide:hover .g-img,.guide:focus-visible .g-img{border-color:var(--acid-ink)}
@media (max-width:820px){.g-img{aspect-ratio:1;align-self:start;margin-top:.2rem}}
.photo-note{margin:1rem 0 0;font-size:.85rem;color:var(--muted)}
.photo-note a{display:inline-block;padding:.35rem 0;color:var(--muted);text-underline-offset:3px}
.photo-note a:hover{color:var(--acid)}

.inline-fig{margin:.5rem 0 2rem;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:var(--surface-2)}
.inline-fig img{display:block;width:100%;height:auto;object-fit:cover;background:var(--surface-3)}
.inline-fig figcaption{display:flex;flex-direction:column;gap:.5rem;padding:.95rem 1.1rem;border-top:1px solid var(--line)}
.fig-cap{font-size:.95rem;line-height:1.5;color:var(--text)}
.fig-credit{font-family:var(--f-mono);font-size:.75rem;line-height:1.55;color:var(--muted)}
.fig-credit a{color:var(--muted);text-underline-offset:2px}
.fig-credit a:hover{color:var(--acid)}
/* portrait photos sit beside their caption instead of towering over the text */
.inline-fig.tall{display:grid;grid-template-columns:minmax(0,300px) minmax(0,1fr);align-items:stretch}
.inline-fig.tall img{aspect-ratio:4/5;height:100%}
.inline-fig.tall figcaption{border-top:0;border-left:1px solid var(--line);justify-content:flex-end;padding:1.25rem}
@media (max-width:640px){
  .inline-fig{margin-inline:calc(var(--gutter) * -1);border-radius:0;border-inline:0}
  .inline-fig.tall{grid-template-columns:42% minmax(0,1fr)}
  .inline-fig.tall figcaption{padding:1rem}
  .inline-fig.tall .fig-cap{font-size:.9rem}
}
@media (max-width:420px){
  .inline-fig.tall{grid-template-columns:1fr}
  .inline-fig.tall img{aspect-ratio:4/3;object-position:center 30%}
  .inline-fig.tall figcaption{border-left:0;border-top:1px solid var(--line)}
}

.credits{border-top:1px solid var(--line)}
.credit-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,420px),1fr));gap:.75rem}
.credit-list li{display:flex;flex-direction:column;gap:.4rem;padding:1rem 1.15rem;border:1px solid var(--line);border-radius:12px;background:var(--surface-2)}
.cr-art{padding:.2rem 0;font-weight:600;text-decoration:none;line-height:1.35}
.cr-art:hover{color:var(--acid)}
.credit-list span{font-family:var(--f-mono);font-size:.75rem;line-height:1.6;color:var(--muted);overflow-wrap:anywhere}
.credit-list span a{color:var(--muted);text-underline-offset:2px}
.credit-list span a:hover{color:var(--acid)}

/* ==========================================================================
   Resources: menu panel, open-source directory, open data, tools
   ========================================================================== */
.mm-small .mm-in{padding:1.5rem 0 1.75rem}
.mm-res{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.75rem}
.mm-res .mm-link{margin:0;padding:1rem 1.1rem;border:1px solid var(--line);border-radius:12px;background:var(--surface-2)}
.mm-res .mm-link:hover{border-color:var(--acid-line);background:var(--surface-3)}
.mm-res .mm-link.is-here{border-color:var(--acid-line)}
@media (max-width:980px){.mm-res{grid-template-columns:1fr}.mm-res .mm-link{padding:.85rem 1rem}}

/* open-source directory */
.oss-list{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.oss{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,420px);gap:1.5rem 3rem;padding:1.6rem 0;border-bottom:1px solid var(--line)}
.oss h3{display:flex;align-items:center;flex-wrap:wrap;gap:.6rem;font-size:clamp(1.3rem,2.2vw,1.7rem)}
.oss-main p{margin:.5rem 0 .85rem;color:var(--muted);max-width:62ch}
.oss-links{display:flex;flex-wrap:wrap;gap:.4rem 1.25rem;font-size:.92rem}
.oss-links a{display:inline-flex;align-items:center;min-height:32px;color:var(--acid);text-underline-offset:3px}
.oss-guide{color:var(--text) !important}
.oss-badge{font-family:var(--f-mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--hot);border:1px solid var(--hot);border-radius:var(--r-xs);padding:.15rem .45rem}
.oss-facts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.75rem 1.5rem;margin:0;align-self:start}
.oss-facts dt{font-family:var(--f-mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.oss-facts dd{margin:.15rem 0 0;font-family:var(--f-mono);font-size:.92rem;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}
@media (max-width:820px){.oss{grid-template-columns:1fr;gap:1rem}}
.res-note .wrap{display:flex;flex-direction:column;gap:1rem}
.res-cols{display:grid !important;grid-template-columns:repeat(auto-fit,minmax(min(100%,380px),1fr))}
section.res-note{padding-top:0}

/* open data */
.ds-list{display:flex;flex-direction:column;gap:1rem}
.dataset{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:1rem 2rem;padding:1.5rem;border:1px solid var(--line);border-radius:var(--r);background:var(--surface-2)}
.dataset h3{font-size:clamp(1.25rem,2vw,1.55rem)}
.ds-head p{margin:.45rem 0 0;color:var(--muted);max-width:70ch}
.ds-meta{display:flex;flex-wrap:wrap;gap:.35rem 1rem;font-family:var(--f-mono);font-size:.75rem;letter-spacing:.04em;color:var(--muted) !important}
.ds-meta a{color:var(--text)}
.ds-dl{display:flex;gap:.5rem;align-items:flex-start;flex-wrap:wrap}
.ds-cols{grid-column:1/-1;display:flex;flex-wrap:wrap;gap:.35rem;align-items:center}
.ds-cols .label{margin-right:.4rem}
.ds-cols code{font-family:var(--f-mono);font-size:.75rem;padding:.2rem .45rem;border:1px solid var(--line);border-radius:var(--r-xs);background:var(--surface);color:var(--text)}
.dataset .tablewrap{grid-column:1/-1;background:var(--surface)}
.ds-prev{min-width:560px}
@media (max-width:640px){.dataset{grid-template-columns:1fr;padding:1.15rem}}

/* tools */
.tools .wrap{display:flex;flex-direction:column;gap:1.5rem}
.tool{border:1px solid var(--line);border-radius:var(--r-lg);background:var(--surface-2);overflow:hidden}
.tool-head{padding:clamp(1.25rem,3vw,2rem) clamp(1.25rem,3vw,2rem) 0}
.tool-head .label{color:var(--acid)}
.tool-head h2{margin:.5rem 0 0;font-size:clamp(1.9rem,4vw,3rem);text-transform:uppercase}
.tool-head p{margin:.75rem 0 0;color:var(--muted);max-width:62ch}
.tool-body{padding:clamp(1.25rem,3vw,2rem);display:flex;flex-direction:column;gap:1.25rem}
.tool-note{margin:0;font-size:.88rem;color:var(--muted)}
.tool input[type=text],.tool input[type=number]{
  width:100%;min-height:44px;padding:.55rem .75rem;border:1px solid var(--line-2);border-radius:10px;
  background:var(--surface);color:var(--text);font:500 1rem/1.2 var(--f-body);
}
.tool input:hover{border-color:var(--muted)}
.tool input:focus-visible{outline:2px solid var(--acid);outline-offset:1px;border-color:var(--acid)}
.tool label > span,.tool legend{display:block;margin-bottom:.35rem;font-family:var(--f-mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.sb-rows{display:flex;flex-direction:column;gap:.6rem}
.sb-row{display:grid;grid-template-columns:minmax(0,1fr) 8rem 6rem 7.5rem 44px;gap:.6rem;align-items:end}
.sb-row + .sb-row label > span{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.sb-line{min-height:44px;display:flex;align-items:center;justify-content:flex-end;font-family:var(--f-mono);font-variant-numeric:tabular-nums;color:var(--acid)}
.sb-del{width:44px;height:44px;border:1px solid var(--line-2);border-radius:10px;background:transparent;color:var(--muted);font-size:1.3rem;cursor:pointer;transition:color .2s,border-color .2s}
.sb-del:hover{color:var(--hot);border-color:var(--hot)}
.sb-actions{display:flex;justify-content:space-between;align-items:end;gap:1rem;flex-wrap:wrap}
.sb-price{width:min(100%,14rem)}
.sb-total{display:flex;align-items:baseline;flex-wrap:wrap;gap:.5rem 1.25rem;padding:1.25rem 1.4rem;border-radius:var(--r);background:var(--acid);color:var(--acid-ink)}
.sb-total .label{color:rgba(11,12,15,.7)}
.sb-total b{font-family:var(--f-display);font-weight:800;font-stretch:75%;font-size:clamp(2.4rem,6vw,3.6rem);line-height:1;font-variant-numeric:tabular-nums}
.sb-total [data-kwh]{font-family:var(--f-mono);font-size:.95rem}
@media (max-width:720px){
  .sb-row{grid-template-columns:minmax(0,1fr) minmax(0,1fr) 44px;padding:.9rem;border:1px solid var(--line);border-radius:12px;background:var(--surface)}
  .sb-row label:first-child{grid-column:1/-1}
  .sb-row + .sb-row label > span{position:static;width:auto;height:auto;clip:auto}
  .sb-line{grid-column:1/3;justify-content:flex-start}
  .sb-del{grid-column:3;grid-row:3}
}
fieldset{border:0;margin:0;padding:0}
.chk-row{display:flex;flex-wrap:wrap;gap:.4rem}
.chk{position:relative}
.chk input{position:absolute;opacity:0;width:100%;height:100%;margin:0;cursor:pointer}
.chk span{display:grid;place-items:center;min-width:44px;height:44px;padding:0 .5rem;border:1px solid var(--line-2);border-radius:10px;font-family:var(--f-mono);font-size:.95rem;color:var(--muted);transition:background-color .15s,color .15s,border-color .15s}
.chk input:checked + span{background:var(--acid);border-color:var(--acid);color:var(--acid-ink);font-weight:600}
.chk input:focus-visible + span{outline:2px solid var(--acid);outline-offset:2px}
.zb-out .label{display:block;margin-bottom:.6rem}
.zb-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,200px),1fr));gap:.5rem}
.zb{display:grid;grid-template-columns:auto 1fr;gap:.1rem .7rem;align-items:baseline;padding:.75rem .9rem;border:1px solid var(--line);border-radius:12px;background:var(--surface)}
.zb b{grid-row:span 2;font-family:var(--f-display);font-weight:800;font-stretch:75%;font-size:2rem;line-height:1}
.zb span{font-family:var(--f-mono);font-size:.75rem;color:var(--muted)}
.zb em{font-style:normal;font-size:.85rem}
.zb-good{border-color:var(--acid);background:rgba(212,255,58,.08)}
.zb-good b,.zb-good em{color:var(--acid)}
.zb-bad b{color:var(--hot);opacity:.85}
.zb-bad em{color:var(--muted)}
.zb-mid b{color:var(--text)}
.zb-none{padding:1rem;border:1px solid var(--hot);border-radius:12px;color:var(--text)}
.tool .chk span{display:grid;place-items:center;margin:0;font-size:.95rem;letter-spacing:0;text-transform:none}
.tool .chk input:checked + span{color:var(--acid-ink)}
@media (max-width:640px){
  .zb-list{grid-template-columns:repeat(2,minmax(0,1fr))}
  .zb{grid-template-columns:1fr;padding:.65rem .75rem}
  .zb b{grid-row:auto;font-size:1.7rem}
  .dataset .tablewrap{display:none}
}
.tool-cta{display:flex;flex-direction:column;align-items:flex-start;gap:.75rem;margin-top:2.5rem}
.tool-cta p{margin:0}
.ds-meta a,.callout p a{display:inline-block;padding:.25rem 0}
.op-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.75rem}
.op-wide{grid-column:1/-1}
.op-ex{margin-top:-.5rem}
@media (max-width:720px){.op-grid{grid-template-columns:1fr}}