/* FrontReplies — Apple-grade dark theme x developer-grid detailing.
   Pure black, SF system type, mono labels, hairline rails, one blue signal. No external fonts. */

:root{
  --bg:#161618;
  --bg-2:#1b1b1e;
  --tile:#202024;
  --tile-2:#26262b;
  --line:rgba(255,255,255,.075);
  --line-2:rgba(255,255,255,.13);
  --line-3:rgba(255,255,255,.24);
  --text:#f5f5f7;
  --text-2:#c7c7cc;
  --muted:#86868b;
  --dim:#6a6a70;
  --blue:#2997ff;
  --blue-2:#0a84ff;
  --blue-wash:rgba(41,151,255,.12);
  --live:#30d158;
  --bubble-in:#323238;

  --display:-apple-system,BlinkMacSystemFont,"SF Pro Display","Inter","Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --sans:-apple-system,BlinkMacSystemFont,"SF Pro Text","Inter","Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,"SF Mono",SFMono-Regular,"JetBrains Mono",Menlo,Consolas,"Liberation Mono",monospace;

  --wrap:1200px;
  --gut:clamp(20px,4vw,48px);
  --nav-h:52px;
  --r:22px;
  --ease:cubic-bezier(.2,.7,.1,1);
}

*,*::before,*::after{box-sizing:border-box}
*{margin:0;padding:0}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;background:var(--bg);color-scheme:dark;scroll-padding-top:calc(var(--nav-h) + 24px)}
@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}
body{
  background:var(--bg);color:var(--text);
  font:400 17px/1.5 var(--sans);letter-spacing:-.011em;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;min-height:100vh;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
::selection{background:var(--blue);color:#fff}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:6px}

.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 var(--gut)}
.skip{position:absolute;left:-9999px;top:0;z-index:100;background:var(--text);color:#000;padding:10px 16px;font-size:14px;border-radius:8px}
.skip:focus{left:16px;top:16px}

/* ---------- type ---------- */
.label{
  font:500 12px/1 var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--muted);
  display:inline-flex;align-items:center;gap:10px;
}
.label b{color:var(--text);font-weight:500}
.label.plain{}
.display{
  font-family:var(--display);font-weight:700;letter-spacing:-.045em;line-height:1.02;
  font-size:clamp(46px,8.4vw,112px);
}
.display em,.h2 em,.post-head h1 em{font-style:normal}
.grad,.display em,.h2 em{
  background:linear-gradient(180deg,#f5f5f7 10%,#6e6e73 110%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.grad-blue{background:linear-gradient(90deg,#5ac8fa,#2997ff 55%,#0a84ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.h2{font-family:var(--display);font-weight:700;letter-spacing:-.04em;line-height:1.05;font-size:clamp(38px,5.6vw,72px)}
.h3{font-family:var(--display);font-weight:600;letter-spacing:-.025em;line-height:1.15;font-size:clamp(24px,2.4vw,32px)}
.dim{color:var(--muted)}
.lede{font-size:clamp(18px,1.55vw,21px);line-height:1.5;color:var(--muted);max-width:38em;letter-spacing:-.015em}
.lede strong{color:var(--text);font-weight:500}

/* ---------- buttons (Apple pills) ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:980px;border:1px solid var(--text);
  background:var(--text);color:#000;font:500 16px/1 var(--sans);letter-spacing:-.01em;white-space:nowrap;
  transition:background .3s var(--ease),border-color .3s,color .3s,transform .3s var(--ease);
}
.btn .arr{display:inline-block;transition:transform .3s var(--ease)}
.btn:hover{background:#fff;transform:translateY(-1px)}
.btn:hover .arr{transform:translateX(3px)}
.btn.blue{background:var(--blue-2);border-color:var(--blue-2);color:#fff}
.btn.blue:hover{background:#2997ff;border-color:#2997ff}
.btn.ghost{background:transparent;color:var(--text);border-color:var(--line-3)}
.btn.ghost:hover{border-color:var(--text);background:rgba(255,255,255,.04)}
.btn.sm{height:30px;padding:0 14px;font-size:13px;gap:6px}
.link{color:var(--blue);font-size:17px;display:inline-flex;align-items:center;gap:4px}
.link:hover{text-decoration:underline;text-underline-offset:3px}
.link .chev{font-size:1.1em;transform:translateY(-1px)}

/* ---------- nav ---------- */
.nav{
  position:fixed;inset:0 0 auto 0;z-index:50;height:var(--nav-h);
  background:rgba(22,22,24,.72);
  -webkit-backdrop-filter:saturate(180%) blur(20px);backdrop-filter:saturate(180%) blur(20px);
  border-bottom:1px solid var(--line);
}
.nav .wrap{height:100%;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:inline-flex;align-items:center;gap:10px;font:600 17px/1 var(--display);letter-spacing:-.02em;color:var(--text)}
.brand .mk{width:24px;height:24px;flex-shrink:0}
.nav-links{display:flex;align-items:center;gap:32px;list-style:none}
.nav-links a{font-size:13px;color:var(--text-2);transition:color .2s;letter-spacing:-.005em}
.nav-links a:hover,.nav-links a[aria-current="page"]{color:#fff}
.nav-links .quiet{color:var(--muted)}
.nav-cta{display:flex;align-items:center;gap:16px}
.burger{display:none;width:40px;height:40px;position:relative}
.burger span{position:absolute;left:11px;right:11px;height:1.5px;background:var(--text);border-radius:2px;transition:transform .35s var(--ease)}
.burger span:nth-child(1){top:16px}.burger span:nth-child(2){top:23px}
.menu-open .burger span:nth-child(1){transform:translateY(3.5px) rotate(45deg)}
.menu-open .burger span:nth-child(2){transform:translateY(-3.5px) rotate(-45deg)}
.sheet{
  position:fixed;inset:var(--nav-h) 0 0 0;z-index:49;background:var(--bg);
  padding:24px var(--gut) 40px;display:flex;flex-direction:column;justify-content:space-between;
  opacity:0;visibility:hidden;transform:translateY(-6px);transition:opacity .3s var(--ease),transform .3s var(--ease),visibility 0s .3s;
}
.menu-open .sheet{opacity:1;visibility:visible;transform:none;transition:opacity .3s var(--ease),transform .3s var(--ease)}
.sheet ul{list-style:none}
.sheet li a{display:flex;justify-content:space-between;align-items:baseline;padding:16px 0;border-bottom:1px solid var(--line);font:700 30px/1.1 var(--display);letter-spacing:-.03em}
.sheet li a small{font:500 12px var(--mono);color:var(--dim)}
.sheet .btn{width:100%;margin-top:24px}
.sheet .mail{margin-top:16px;font:13px var(--mono);color:var(--muted);text-align:center}
.menu-open{overflow:hidden}
@media (max-width:880px){
  .nav-links,.nav-cta .btn{display:none}
  .burger{display:block}
}

/* ---------- rails (grid frame) ---------- */
.band{position:relative;border-top:1px solid var(--line)}
.rail{position:relative;border-left:1px solid var(--line);border-right:1px solid var(--line)}
.band > .rail::before,.band > .rail::after{
  content:"+";position:absolute;top:-12px;font:300 18px/1 var(--mono);color:var(--dim);
}
.band > .rail::before{left:-6px}
.band > .rail::after{right:-6px}
@media (max-width:720px){
  .rail{border-left:0;border-right:0}
  .band > .rail::before,.band > .rail::after{display:none}
}

/* ---------- hero ---------- */
.hero{position:relative;padding:calc(var(--nav-h) + clamp(64px,11vh,128px)) 0 0;overflow:hidden;isolation:isolate;text-align:center}
.hero::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background-image:radial-gradient(rgba(255,255,255,.07) 1px,transparent 1.3px);background-size:24px 24px;
  -webkit-mask-image:radial-gradient(ellipse 60% 55% at 50% 30%,#000 15%,transparent 75%);
  mask-image:radial-gradient(ellipse 60% 55% at 50% 30%,#000 15%,transparent 75%);
}
.hero::after{
  content:"";position:absolute;z-index:-1;left:50%;top:38%;width:1100px;height:700px;transform:translate(-50%,0);
  background:radial-gradient(ellipse at center,rgba(10,132,255,.20),transparent 62%);filter:blur(10px);pointer-events:none;
}
.pill{
  display:inline-flex;align-items:center;gap:10px;height:32px;padding:0 14px;border:1px solid var(--line-2);border-radius:980px;
  font:500 12px/1 var(--mono);letter-spacing:.04em;color:var(--text-2);background:rgba(255,255,255,.03);
}
/* perf: the live-dot pulse used to animate box-shadow, which repainted the whole hero every frame forever.
   Same ring, drawn as a pseudo-element and animated with transform/opacity only (GPU-composited). 23/7 = (7px + 2*8px spread) / 7px */
.dot{position:relative;width:7px;height:7px;border-radius:50%;background:var(--live)}
.dot::after{content:"";position:absolute;inset:0;border-radius:50%;background:rgb(48,209,88);opacity:0;pointer-events:none;animation:pulse 2.2s infinite}
.dot.off::after{animation-play-state:paused}
@keyframes pulse{0%{transform:scale(1);opacity:.55}70%{transform:scale(3.2857);opacity:0}100%{transform:scale(1);opacity:0}}
.hero h1{margin:28px auto 24px;max-width:12em}
.hero .lede{margin:0 auto 36px;max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px 28px;align-items:center;justify-content:center}
.chan{
  margin:44px auto 0;display:flex;flex-wrap:wrap;justify-content:center;gap:8px 22px;
  font:500 11.5px/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--dim);
}
.chan span{display:inline-flex;align-items:center;gap:8px}
.chan span::before{content:"";width:4px;height:4px;background:var(--muted);border-radius:50%}

/* product window */
.stage{position:relative;margin:clamp(56px,9vh,96px) auto 0;max-width:1040px;padding:0 0 clamp(72px,12vh,140px)}
.window{
  position:relative;text-align:left;background:linear-gradient(180deg,#26262b,#1d1d21);
  border:1px solid var(--line-2);border-radius:18px;overflow:hidden;
  box-shadow:0 40px 120px -30px rgba(10,132,255,.25),0 0 0 1px rgba(255,255,255,.02) inset;
}
.window-bar{
  display:flex;align-items:center;gap:16px;height:44px;padding:0 16px;border-bottom:1px solid var(--line);
  font:500 12px var(--mono);color:var(--muted);
}
.lights{display:flex;gap:7px}
.lights i{width:11px;height:11px;border-radius:50%;background:#2c2c2e}
.window-bar .path{flex:1;text-align:center;color:var(--text-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.window-bar .status{display:inline-flex;align-items:center;gap:8px;color:var(--live)}
.window-body{display:grid;grid-template-columns:1fr 1.25fr}
.log{border-right:1px solid var(--line);padding:22px 0;font:12.5px/1.5 var(--mono);color:var(--muted)}
.log h3,.thread h3{font:500 11px var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--dim);padding:0 22px 14px}
.log ol{list-style:none}
.log li{display:grid;grid-template-columns:78px 1fr;gap:10px;padding:9px 22px;border-top:1px dashed var(--line)}
.log li time{color:var(--dim)}
.log li b{font-weight:500;color:var(--text-2)}
.log li.ok b{color:var(--live)}
.log li.ok::marker{content:none}
.thread{padding:22px 22px 26px}
.window-foot{border-top:1px solid var(--line);padding:11px 16px;font:11.5px var(--mono);color:var(--dim);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}

/* bubbles (shared: hero + articles) */
.exchange{list-style:none;display:flex;flex-direction:column;gap:10px}
.exchange li{display:flex;flex-direction:column;max-width:82%}
.exchange .who{font:500 10.5px var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--dim);margin:0 12px 5px}
.exchange p{padding:10px 15px;border-radius:20px;font-size:15px;line-height:1.42;letter-spacing:-.01em}
.exchange .in{align-self:flex-start}
.exchange .in p{background:var(--bubble-in);color:var(--text);border-bottom-left-radius:6px}
.exchange .out{align-self:flex-end;align-items:flex-end}
.exchange .out p{background:var(--blue-2);color:#fff;border-bottom-right-radius:6px}
.exchange .sys{align-self:center;max-width:100%;text-align:center;font:500 11px/1.5 var(--mono);letter-spacing:.04em;color:var(--dim);padding:4px 0}
.exchange .sys.done{color:var(--live)}
.exchange .sys.done::before{content:"✓ "}

.hero .exchange li,.hero .log li{opacity:0;transform:translateY(8px);animation:rise .6s var(--ease) forwards}
.hero .exchange li:nth-child(1){animation-delay:.6s}.hero .exchange li:nth-child(2){animation-delay:1.2s}
.hero .exchange li:nth-child(3){animation-delay:2s}.hero .exchange li:nth-child(4){animation-delay:2.7s}
.hero .exchange li:nth-child(5){animation-delay:3.4s}.hero .exchange li:nth-child(6){animation-delay:4s}.hero .exchange li:nth-child(7){animation-delay:4.6s}
.hero .log li:nth-child(1){animation-delay:.4s}.hero .log li:nth-child(2){animation-delay:1.1s}
.hero .log li:nth-child(3){animation-delay:1.9s}.hero .log li:nth-child(4){animation-delay:2.6s}
.hero .log li:nth-child(5){animation-delay:3.3s}.hero .log li:nth-child(6){animation-delay:4.1s}.hero .log li:nth-child(7){animation-delay:4.2s}
@keyframes rise{to{opacity:1;transform:none}}

/* ---------- sections ---------- */
.section{padding:clamp(96px,14vh,168px) 0}
.sec-head{text-align:center;max-width:860px;margin:0 auto clamp(48px,8vh,80px)}
.sec-head .h2{margin:20px 0 20px}
.sec-head .lede{margin:0 auto}
.sec-head.left{text-align:left;margin-left:0}
.sec-head.left .lede{margin:0}

/* demo video: hero trigger + modal */
.link.watch{background:none;border:0;padding:0;cursor:pointer;font:inherit;font-size:17px;color:var(--blue);gap:9px}
.watch .play{display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;border-radius:50%;border:1px solid currentColor;padding-left:2px;transition:background .3s var(--ease),color .3s}
.watch:hover .play{background:var(--blue);color:#000}
.watch:focus-visible{outline:2px solid var(--blue);outline-offset:4px;border-radius:6px}
.vmodal{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;padding:clamp(14px,4vw,48px);background:rgba(8,8,10,.84);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);opacity:0;transition:opacity .3s var(--ease)}
.vmodal[hidden]{display:none}
.vmodal.open{opacity:1}
.vmodal-panel{position:relative;overflow:auto;overscroll-behavior:contain;width:100%;max-width:min(960px,calc((80vh - 200px) * 16 / 9));max-height:80vh;display:flex;flex-direction:column;border:1px solid var(--line-2);border-radius:var(--r);background:var(--tile);padding:clamp(8px,1vw,12px);box-shadow:0 40px 120px -30px rgba(0,0,0,.8);transform:translateY(10px) scale(.985);transition:transform .35s var(--ease)}
@supports (height:1dvh){.vmodal-panel{max-width:min(960px,calc((80dvh - 200px) * 16 / 9));max-height:80dvh}}
.vmodal.open .vmodal-panel{transform:none}
.vmodal-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;padding:6px clamp(6px,1vw,10px) 12px}
.vmodal-head .label{display:block;margin-bottom:8px}
.vmodal-title{font:600 clamp(18px,2vw,22px)/1.2 var(--display);letter-spacing:-.025em;color:var(--text)}
.vmodal-title em{font-style:normal;color:var(--muted)}
.vmodal-x{flex:none;display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;border:1px solid var(--line-2);background:var(--tile-2);color:var(--text);cursor:pointer;transition:background .2s,border-color .2s}
.vmodal-x:hover{background:#2e2e34;border-color:var(--line-3)}
.vmodal-x:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
.vmodal-media{min-height:0}
.vmodal video{display:block;width:100%;height:auto;aspect-ratio:16/9;max-height:calc(80vh - 200px);object-fit:contain;border-radius:calc(var(--r) - 10px);background:#0c0c0e;border:1px solid var(--line)}
.demo-cap{display:flex;justify-content:space-between;align-items:baseline;gap:6px 24px;flex-wrap:wrap;padding:12px clamp(6px,1vw,10px) 4px;font-size:14px;line-height:1.5;color:var(--muted);letter-spacing:-.01em}
.demo-cap > span:first-child{max-width:44em;min-width:0}
.demo-meta{font:500 11px var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--dim);white-space:nowrap}
@media (prefers-reduced-motion:reduce){.vmodal,.vmodal-panel{transition:none}}
.modal-lock{overflow:hidden}

/* statement scrub */
.statement{padding:clamp(110px,18vh,200px) 0}
.statement p{
  font:700 clamp(32px,4.6vw,60px)/1.12 var(--display);letter-spacing:-.04em;max-width:18em;margin:0 auto;text-align:center;
}
.statement .w{color:#3c3c42;transition:color .4s var(--ease)}
.statement .w.on{color:var(--text)}
.statement .w.on.gold{color:var(--blue)}

/* bento */
.bento{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.tile{
  position:relative;background:var(--tile);border:1px solid var(--line);border-radius:var(--r);
  padding:clamp(26px,3vw,40px);overflow:hidden;display:flex;flex-direction:column;min-height:400px;
  transition:border-color .4s var(--ease),transform .5s var(--ease);
}
.tile:hover{border-color:var(--line-2)}
.tile.w4{grid-column:span 4}.tile.w3{grid-column:span 3}.tile.w2{grid-column:span 2}
.tile .tag{font:500 11px var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--blue)}
.tile h3{font:700 clamp(26px,2.6vw,36px)/1.08 var(--display);letter-spacing:-.035em;margin:14px 0 12px}
.tile p{color:var(--muted);font-size:16px;line-height:1.5;max-width:30em}
.tile .viz{margin-top:auto;padding-top:28px}

.wave{display:flex;align-items:center;gap:4px;height:110px}
.wave i{flex:1;max-width:7px;border-radius:4px;background:linear-gradient(180deg,#5ac8fa,#0a84ff);opacity:.9;animation:wv 1.4s ease-in-out infinite}
@keyframes wv{0%,100%{transform:scaleY(.25)}50%{transform:scaleY(1)}}
.wave-row{display:flex;align-items:center;gap:22px}
.wave-row .call{flex-shrink:0;font:500 12px/1.6 var(--mono);color:var(--muted)}
.wave-row .call b{display:block;color:var(--text);font-weight:500}

.mini{display:flex;flex-direction:column;gap:8px}
.mini .b{align-self:flex-end;max-width:92%;background:var(--blue-2);color:#fff;padding:9px 14px;border-radius:18px 18px 6px 18px;font-size:14px;line-height:1.4}
.mini .b.in{align-self:flex-start;background:var(--bubble-in);color:var(--text);border-radius:18px 18px 18px 6px}
.mini .t{font:500 10.5px var(--mono);color:var(--dim);text-align:center;letter-spacing:.04em}

.inbox{list-style:none;border:1px solid var(--line);border-radius:14px;overflow:hidden;font:12px/1.4 var(--mono)}
.inbox li{display:grid;grid-template-columns:1fr auto;gap:10px;padding:11px 14px;border-top:1px solid var(--line);color:var(--muted)}
.inbox li:first-child{border-top:0}
.inbox li b{color:var(--text-2);font-weight:500;display:block}
.inbox li em{font-style:normal;color:var(--live);align-self:center}

.slots{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;font:500 11.5px var(--mono)}
.slots span{height:38px;border-radius:9px;border:1px solid var(--line);display:grid;place-items:center;color:var(--dim)}
.slots span.x{background:rgba(255,255,255,.03);color:#333;text-decoration:line-through}
.slots span.on{background:var(--blue-2);border-color:var(--blue-2);color:#fff}
.slots .hd{border:0;height:auto;padding-bottom:4px;color:var(--muted)}

.timeline{list-style:none;position:relative;padding-left:22px}
.timeline::before{content:"";position:absolute;left:5px;top:6px;bottom:6px;width:1px;background:var(--line-2)}
.timeline li{position:relative;padding:7px 0;font-size:14px;color:var(--text-2)}
.timeline li::before{content:"";position:absolute;left:-21px;top:13px;width:9px;height:9px;border-radius:50%;border:1px solid var(--line-3);background:var(--bg)}
.timeline li.on::before{background:var(--blue);border-color:var(--blue)}
.timeline li small{display:block;font:500 10.5px var(--mono);color:var(--dim);letter-spacing:.05em;text-transform:uppercase}

/* values */
.values{display:grid;grid-template-columns:repeat(3,1fr)}
.values > div{padding:clamp(36px,5vh,56px) clamp(22px,2.6vw,40px);border-left:1px solid var(--line)}
.values > div:first-child{border-left:0}
.values h3{font:700 clamp(24px,2.3vw,30px)/1.12 var(--display);letter-spacing:-.03em;margin:16px 0 10px}
.values p{color:var(--muted);font-size:16px}

/* industries grid */
.ind{display:grid;grid-template-columns:repeat(5,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}
.ind div{
  border-right:1px solid var(--line);border-bottom:1px solid var(--line);padding:26px 22px 30px;
  display:flex;flex-direction:column;gap:30px;transition:background .3s;
}
.ind div:hover{background:rgba(255,255,255,.025)}
.ind small{font:500 11px var(--mono);color:var(--dim);letter-spacing:.04em}
.ind b{font:600 20px/1.15 var(--display);letter-spacing:-.025em;color:var(--text)}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;list-style:none}
.steps li{border:1px solid var(--line);border-radius:var(--r);padding:28px 26px 30px;background:var(--bg-2);position:relative}
.steps .rn{display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:980px;border:1px solid var(--line-2);font:500 11px var(--mono);letter-spacing:.06em;color:var(--text-2);margin-bottom:44px}
.steps h3{font:700 24px/1.15 var(--display);letter-spacing:-.03em;margin-bottom:10px}
.steps p{color:var(--muted);font-size:15.5px;line-height:1.55}
.steps .when{display:block;margin-top:20px;font:500 11px var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--blue)}

/* closing CTA */
.closer{padding:clamp(120px,18vh,200px) 0;position:relative;overflow:hidden;isolation:isolate;text-align:center}
.closer::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:radial-gradient(ellipse 55% 65% at 50% 55%,#000,transparent 75%);mask-image:radial-gradient(ellipse 55% 65% at 50% 55%,#000,transparent 75%);
}
.closer::after{content:"";position:absolute;z-index:-1;left:50%;top:60%;width:900px;height:500px;transform:translate(-50%,-50%);background:radial-gradient(ellipse,rgba(10,132,255,.16),transparent 65%)}
.closer .inner{max-width:900px;margin:0 auto}
.closer .h2{font-size:clamp(44px,7.4vw,96px);margin:22px 0 22px}
.closer .lede{margin:0 auto 40px}
.closer .mailto{margin-top:30px;font:13px var(--mono);color:var(--dim)}
.closer .mailto a{color:var(--text-2)}
.closer .mailto a:hover{color:var(--blue)}

/* ---------- footer ---------- */
.foot{border-top:1px solid var(--line);padding:64px 0 32px;background:var(--bg)}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.foot p{color:var(--muted);font-size:14px;max-width:28em;margin-top:16px;line-height:1.55}
.foot h4{font:500 11px var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--dim);margin-bottom:16px}
.foot ul{list-style:none;display:grid;gap:10px}
.foot ul a{font-size:14px;color:var(--text-2);transition:color .2s}
.foot ul a:hover{color:#fff}
.wordmark-xl{
  font:800 clamp(60px,15.5vw,236px)/.82 var(--display);letter-spacing:-.06em;margin-top:64px;white-space:nowrap;user-select:none;
  background:linear-gradient(180deg,rgba(255,255,255,.12),rgba(255,255,255,0) 85%);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.foot-bar{
  margin-top:28px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font:12px var(--mono);color:var(--dim);
}

/* ---------- reveal ---------- */
.js [data-reveal]{opacity:0;transform:translateY(24px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.js [data-reveal].in{opacity:1;transform:none}
.js [data-reveal="2"]{transition-delay:.08s}
.js [data-reveal="3"]{transition-delay:.16s}
.js [data-reveal="4"]{transition-delay:.24s}

/* ---------- page head (blog) ---------- */
.page-head{padding:calc(var(--nav-h) + clamp(72px,12vh,140px)) 0 clamp(52px,8vh,88px);position:relative;isolation:isolate;overflow:hidden;border-bottom:1px solid var(--line)}
.page-head::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background-image:radial-gradient(rgba(255,255,255,.08) 1px,transparent 1.3px);background-size:24px 24px;
  -webkit-mask-image:radial-gradient(ellipse 55% 80% at 80% 0%,#000,transparent 70%);mask-image:radial-gradient(ellipse 55% 80% at 80% 0%,#000,transparent 70%);
}
.page-head::after{content:"";position:absolute;z-index:-1;right:-200px;top:-300px;width:800px;height:700px;background:radial-gradient(ellipse,rgba(10,132,255,.14),transparent 62%)}
.page-head h1{margin:24px 0 22px}

.index{list-style:none;display:grid;gap:16px}
.index a{
  display:grid;grid-template-columns:72px 1fr 200px 40px;gap:clamp(16px,3vw,40px);align-items:center;
  padding:clamp(30px,4.5vh,44px) clamp(24px,3vw,40px);border:1px solid var(--line);border-radius:var(--r);background:var(--tile);
  transition:border-color .3s,background .3s;
}
.index a:hover{border-color:var(--line-3);background:var(--tile-2)}
.index .num{font:500 13px var(--mono);color:var(--blue)}
.index h2{font:700 clamp(26px,3vw,38px)/1.08 var(--display);letter-spacing:-.035em}
.index p{color:var(--muted);margin-top:12px;max-width:40em;font-size:16px}
.index .meta{font:500 11px/1.8 var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--dim)}
.index .go{width:40px;height:40px;border-radius:50%;border:1px solid var(--line-2);display:grid;place-items:center;font-size:16px;color:var(--text-2);transition:background .3s,color .3s,transform .3s var(--ease)}
.index a:hover .go{background:var(--text);color:#000;transform:translateX(3px)}

/* ---------- article ---------- */
.progress{position:fixed;top:var(--nav-h);left:0;height:2px;width:100%;transform-origin:0 50%;transform:scaleX(0);background:var(--blue);z-index:51}
.crumbs{font:500 12px var(--mono);color:var(--dim);display:flex;flex-wrap:wrap;gap:8px}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--text)}
.post-head h1{font-size:clamp(40px,6.4vw,84px);line-height:1.03;max-width:14em}
.post-head .lede{max-width:40em}
.byline{margin-top:34px;display:flex;flex-wrap:wrap;gap:8px}
.byline span{display:inline-flex;align-items:center;height:28px;padding:0 12px;border:1px solid var(--line-2);border-radius:980px;font:500 11.5px var(--mono);color:var(--text-2)}

.post-body{display:grid;grid-template-columns:230px minmax(0,1fr);gap:clamp(32px,6vw,96px);padding-top:clamp(56px,9vh,96px);padding-bottom:clamp(80px,12vh,140px)}
.toc{position:sticky;top:calc(var(--nav-h) + 36px);align-self:start;max-height:calc(100vh - var(--nav-h) - 72px);overflow:auto}
.toc h2{font:500 11px var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--dim);margin-bottom:14px}
.toc ol{list-style:none;border-left:1px solid var(--line)}
.toc a{display:flex;gap:10px;padding:7px 0 7px 14px;margin-left:-1px;border-left:1px solid transparent;font-size:13.5px;line-height:1.4;color:var(--muted);transition:color .2s,border-color .2s}
.toc a:hover{color:var(--text)}
.toc a.active{color:var(--text);border-left-color:var(--blue)}
.toc .rn{font:500 11px/1.6 var(--mono);color:var(--dim);flex-shrink:0}

.prose{max-width:720px;min-width:0;font-size:18px;line-height:1.7;color:var(--text-2);letter-spacing:-.012em}
.prose > * + *{margin-top:1.1em}
.prose h2{
  font:700 clamp(30px,3.4vw,42px)/1.08 var(--display);letter-spacing:-.035em;color:var(--text);
  margin-top:2.4em;padding-top:1.1em;border-top:1px solid var(--line);
}
.prose h2 .rn{display:block;font:500 12px var(--mono);letter-spacing:.06em;color:var(--blue);margin-bottom:16px}
.prose h3{font:600 clamp(22px,2.1vw,26px)/1.2 var(--display);letter-spacing:-.025em;color:var(--text);margin-top:1.9em}
.prose strong{color:var(--text);font-weight:600}
.prose a{color:var(--blue)}
.prose a:hover{text-decoration:underline;text-underline-offset:3px}
.prose ul,.prose ol{list-style:none}
.prose ul li,.prose ol li{position:relative;padding-left:30px;margin-top:.55em}
.prose ul li::before{content:"";position:absolute;left:6px;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--blue)}
.prose ol{counter-reset:o}
.prose ol li{counter-increment:o}
.prose ol li::before{content:counter(o,decimal-leading-zero);position:absolute;left:0;top:.28em;font:500 12px var(--mono);color:var(--blue)}
.prose .first{color:var(--text);font-size:20px;line-height:1.6}
.pull{
  font:700 clamp(26px,2.8vw,34px)/1.2 var(--display);letter-spacing:-.03em;color:var(--text);
  padding:28px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin:2em 0 !important;
}
.pull em{font-style:normal;color:var(--blue)}
.note{border:1px solid var(--line-2);border-radius:16px;padding:22px 24px;font-size:16px;line-height:1.65;background:var(--tile)}
.note .label{display:flex;margin-bottom:10px;color:var(--blue)}

.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:16px;margin:2em 0 !important;-webkit-overflow-scrolling:touch;background:var(--tile)}
.prose table{width:100%;min-width:580px;border-collapse:collapse;font-size:15px;line-height:1.5}
.prose th,.prose td{text-align:left;padding:15px 18px;border-bottom:1px solid var(--line);vertical-align:top}
.prose tr:last-child td,.prose tr:last-child th{border-bottom:0}
.prose thead th{font:500 11px var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--dim)}
.prose thead th:nth-child(3){color:var(--blue)}
.prose tbody th{font-weight:600;color:var(--text)}
.prose td:last-child{color:var(--text)}

.specimen{border:1px solid var(--line-2);border-radius:18px;overflow:hidden;background:linear-gradient(180deg,#24242a,#1d1d21)}
.specimen-head{display:flex;justify-content:space-between;gap:16px;padding:12px 18px;border-bottom:1px solid var(--line);font:500 12px var(--mono);color:var(--muted)}
.specimen-head b{color:var(--text);font-weight:500}
.specimen .exchange{padding:20px 18px}
.specimen-foot{padding:10px 18px;border-top:1px solid var(--line);font:11.5px var(--mono);color:var(--dim)}
.prose .specimen{margin:2em 0 !important}
.prose .exchange{padding:20px 18px}
.prose .exchange li{padding:0;margin:0;counter-increment:none}
.prose .exchange li::before{content:none}
.prose .exchange .sys.done::before{content:"✓ ";position:static;width:auto;height:auto;background:none;font:inherit;color:inherit}
.prose .exchange p{margin:0}

.dl{border:1px solid var(--line);border-radius:16px;overflow:hidden;margin-top:1.3em !important;background:var(--tile)}
.dl > div{display:grid;grid-template-columns:160px 1fr;gap:20px;padding:16px 20px;border-top:1px solid var(--line)}
.dl > div:first-child{border-top:0}
.dl dt{font:500 11px/2 var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--blue)}
.dl dd{font-size:16px;line-height:1.65}

.faq{border-top:1px solid var(--line);margin-top:1.5em !important}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  list-style:none;cursor:pointer;display:flex;justify-content:space-between;gap:24px;align-items:center;
  padding:22px 0;font:600 clamp(18px,1.8vw,21px)/1.3 var(--display);letter-spacing:-.02em;color:var(--text);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";flex-shrink:0;width:28px;height:28px;border-radius:50%;border:1px solid var(--line-2);
  display:grid;place-items:center;font:300 18px/1 var(--sans);color:var(--text-2);transition:transform .3s var(--ease),background .3s;
}
.faq details[open] summary::after{transform:rotate(45deg);background:var(--text);color:#000}
.faq .a{padding:0 0 24px;font-size:16.5px;line-height:1.7;color:var(--muted);max-width:42em}
.faq .a p + p{margin-top:.8em}

.post-cta{margin-top:3em !important;border:1px solid var(--line-2);border-radius:var(--r);padding:clamp(28px,4vw,44px);position:relative;overflow:hidden;background:radial-gradient(ellipse at 100% 0%,rgba(10,132,255,.18),transparent 55%),var(--tile)}
.post-cta .label{color:var(--blue)}
.post-cta h3{margin-top:12px !important;font:700 clamp(26px,3vw,36px)/1.1 var(--display);letter-spacing:-.035em}
.post-cta p{margin:12px 0 24px;color:var(--muted)}
.post-cta .row{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.post-cta .row small{font:12px var(--mono);color:var(--dim);margin-left:8px}
.post-cta .row small a{color:var(--text-2)}

.further{border-top:1px solid var(--line);padding:clamp(56px,9vh,96px) 0}
.further-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:26px}
.further a{display:block;padding:28px 30px;border:1px solid var(--line);border-radius:var(--r);background:var(--tile);transition:border-color .3s}
.further a:hover{border-color:var(--line-3)}
.further .meta{font:500 11px var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--dim)}
.further h3{font:700 clamp(22px,2.2vw,28px)/1.15 var(--display);letter-spacing:-.03em;margin-top:12px}
.further a:hover h3{color:var(--blue)}

/* 404 */
.nf{min-height:80vh;display:grid;place-items:center;text-align:center;padding:calc(var(--nav-h) + 60px) var(--gut) 80px}
.nf .display{font-size:clamp(110px,22vw,260px);background:linear-gradient(180deg,#f5f5f7,#1c1c1e);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .post-body{grid-template-columns:minmax(0,1fr)}
  .toc{display:none}
  .prose{margin:0 auto;width:100%}
  .ind{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:960px){
  .bento{grid-template-columns:repeat(2,1fr)}
  .tile.w4,.tile.w3{grid-column:span 2}
  .tile.w2{grid-column:span 1}
  .steps{grid-template-columns:1fr 1fr}
  .window-body{grid-template-columns:1fr}
  .log{border-right:0;border-bottom:1px solid var(--line)}
  .foot-grid{grid-template-columns:1fr 1fr}
  .foot-grid > div:first-child{grid-column:1/-1}
  .index a{grid-template-columns:1fr 40px}
  .index .num,.index .meta{grid-column:1}
  .index .go{grid-column:2;grid-row:1/4;align-self:center}
}
@media (max-width:720px){
  body{font-size:16px}
  .bento{grid-template-columns:1fr}
  .tile.w4,.tile.w3,.tile.w2{grid-column:auto}
  .tile{min-height:0}
  .values{grid-template-columns:1fr}
  .values > div{border-left:0;border-top:1px solid var(--line);padding-left:0;padding-right:0}
  .values > div:first-child{border-top:0}
  .ind{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr}
  .steps .rn{margin-bottom:24px}
  .hero-actions .btn{flex:1 1 100%}
  .further-grid{grid-template-columns:1fr}
  .dl > div{grid-template-columns:1fr;gap:4px}
  .prose{font-size:17px}
  .exchange li{max-width:90%}
  .log li{grid-template-columns:64px 1fr}
  .window-bar .path{text-align:left}
  .window-bar .status span{display:none}
  .foot-grid{gap:32px 20px}
  .chan{margin-top:32px}
  .index a{padding:26px 22px}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .hero .exchange li,.hero .log li{opacity:1;transform:none}
  .js [data-reveal]{opacity:1;transform:none}
}
@media print{
  .nav,.sheet,.progress,.toc,.closer,.post-cta,.further{display:none}
  body{background:#fff;color:#000}
}
.wave-row .wave{flex:1;justify-content:flex-end}
.tile p{margin-bottom:24px}
.tile .viz.inbox{padding-top:0;margin-top:auto}
.wave i{flex:0 0 4px;max-width:none}

/* --- charcoal layering --- */
.band:nth-of-type(even),.foot{background:var(--bg-2)}
.closer{background:var(--bg)}
.tile,.index a,.further a,.steps li,.post-cta,.note,.dl,.table-wrap{
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),0 1px 2px rgba(0,0,0,.25),0 18px 40px -24px rgba(0,0,0,.6);
}
.tile{background:linear-gradient(180deg,#232327,#1e1e22)}
.tile:hover{transform:translateY(-3px);border-color:var(--line-3)}
.steps li{background:linear-gradient(180deg,#222226,#1c1c20)}
.window{box-shadow:inset 0 1px 0 rgba(255,255,255,.08),0 40px 100px -30px rgba(0,0,0,.7),0 30px 120px -40px rgba(10,132,255,.28)}
.ind{background:var(--bg)}
.ind div:hover{background:var(--tile)}
.lights i:nth-child(1){background:#ff5f57}.lights i:nth-child(2){background:#febc2e}.lights i:nth-child(3){background:#28c840}
.btn{box-shadow:0 1px 0 rgba(255,255,255,.4) inset,0 6px 20px -8px rgba(0,0,0,.6)}
.btn.ghost{box-shadow:none}
.wordmark-xl{background:linear-gradient(180deg,rgba(255,255,255,.10),rgba(255,255,255,0) 85%);-webkit-background-clip:text;background-clip:text}
.hero::after{background:radial-gradient(ellipse at center,rgba(10,132,255,.16),transparent 62%)}