/* bme688.info — Tri-colour e-paper air station. Ink / e-paper / e-red, ordered dither, stepped pixel corners. */
:root{
  --paper:#E9E7E0;--panel:#F5F4EF;--case:#D9D6CC;--ink:#18191B;--gr:#4A4C51;--mute:#6A6B6E;--line:#B7B4AA;--ghost:#D3D0C6;
  --red:#BE2A2C;--red-d:#931E21;--night:#18191B;--night-2:#26282C;--night-t:#E9E7E0;--night-m:#A8A69F;
  --f-d:"K2D","Sarabun",system-ui,sans-serif;--f-b:"Sarabun","K2D",system-ui,sans-serif;--f-p:"Silkscreen","K2D",ui-monospace,monospace;
  --wrap:1240px;--g:clamp(16px,3.2vw,40px);
  --step:polygon(0 4px,4px 4px,4px 0,calc(100% - 4px) 0,calc(100% - 4px) 4px,100% 4px,100% calc(100% - 4px),calc(100% - 4px) calc(100% - 4px),calc(100% - 4px) 100%,4px 100%,4px calc(100% - 4px),0 calc(100% - 4px));
  --d6r:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 4 4' shape-rendering='crispEdges' fill='%23BE2A2C'%3E%3Cpath d='M0 0h1v1H0z'/%3E%3C/svg%3E");
  --d12r:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 4 4' shape-rendering='crispEdges' fill='%23BE2A2C'%3E%3Cpath d='M0 0h1v1H0zM2 2h1v1H2z'/%3E%3C/svg%3E");
  --d25r:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 4 4' shape-rendering='crispEdges' fill='%23BE2A2C'%3E%3Cpath d='M0 0h1v1H0zM2 0h1v1H2zM0 2h1v1H0zM2 2h1v1H2z'/%3E%3C/svg%3E");
  --d50r:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 4 4' shape-rendering='crispEdges' fill='%23BE2A2C'%3E%3Cpath d='M0 0h1v1H0zM2 0h1v1H2zM1 1h1v1H1zM3 1h1v1H3zM0 2h1v1H0zM2 2h1v1H2zM1 3h1v1H1zM3 3h1v1H3z'/%3E%3C/svg%3E");
  --d25p:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 4 4' shape-rendering='crispEdges' fill='%23E9E7E0'%3E%3Cpath d='M1 1h1v1H1zM3 1h1v1H3zM1 3h1v1H1zM3 3h1v1H3z'/%3E%3C/svg%3E");
  --d12k:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 4 4' shape-rendering='crispEdges' fill='%2318191B'%3E%3Cpath d='M0 0h1v1H0zM2 2h1v1H2z'/%3E%3C/svg%3E");
  --d25k:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 4 4' shape-rendering='crispEdges' fill='%2318191B'%3E%3Cpath d='M0 0h1v1H0zM2 0h1v1H2zM0 2h1v1H0zM2 2h1v1H2z'/%3E%3C/svg%3E");
  --d50k:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 4 4' shape-rendering='crispEdges' fill='%2318191B'%3E%3Cpath d='M0 0h1v1H0zM2 0h1v1H2zM1 1h1v1H1zM3 1h1v1H3zM0 2h1v1H0zM2 2h1v1H2zM1 3h1v1H1zM3 3h1v1H3z'/%3E%3C/svg%3E");
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{margin:0;background:var(--paper);color:var(--ink);font:400 17px/1.7 var(--f-b);overflow-x:clip;-webkit-font-smoothing:antialiased}
body:lang(th){line-height:1.8}
img,svg{max-width:100%}
a{color:var(--ink);text-decoration-color:var(--red);text-decoration-thickness:2px;text-underline-offset:.22em}
a:hover{color:var(--red-d)}
:focus-visible{outline:3px solid var(--red);outline-offset:3px}
.vh{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap}
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--g)}
.skip{position:absolute;left:12px;top:-80px;z-index:100;background:var(--ink);color:var(--panel);padding:12px 18px;font:700 16px/1.2 var(--f-d);text-decoration:none}
.skip:focus{top:12px}
.px{fill:currentColor;flex:0 0 auto;width:20px;height:20px}
.px.red{fill:var(--red)}
h1,h2,h3{font-family:var(--f-d);color:var(--ink);text-wrap:balance}
h1,h2,h3,p,ul,ol{margin-top:0}

/* ---------- buttons (stepped pixel corners painted on ::before so focus rings are not clipped) ---------- */
.btn{--bb:var(--ink);--bf:var(--panel);position:relative;z-index:0;display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:50px;padding:10px 22px;
  font:700 1rem/1.25 var(--f-d);color:var(--bf);text-decoration:none;text-align:center;border:0;background:none;cursor:pointer;transition:color .15s}
.btn::before{content:"";position:absolute;inset:0;z-index:-1;background:var(--bb);clip-path:var(--step);transition:background .15s}
.btn:hover{color:var(--bf)}
.btn-ink:hover{--bb:var(--red)}
.btn-red{--bb:var(--red);--bf:#FBFAF6}
.btn-red:hover{--bb:var(--ink)}
.btn-line{--bf:var(--ink)}
.btn-line::before{background:transparent;clip-path:none;box-shadow:inset 0 0 0 2px var(--ink)}
.btn-line:hover{--bf:var(--panel)}
.btn-line:hover::before{background:var(--ink)}
.btn-sm{min-height:44px;padding:8px 16px;font-size:.95rem}
.btn .px{width:18px;height:18px}

/* ---------- header: status bar + inverted tab row ---------- */
.hd{position:sticky;top:0;z-index:50;background:var(--paper);border-bottom:2px solid var(--ink)}
.hd-row{display:grid;grid-template-columns:auto 1fr auto auto;align-items:center;column-gap:12px;min-height:66px}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);min-height:44px}
.brand .chip{width:34px;height:34px;color:var(--ink);flex:0 0 auto}
.brand-t{display:flex;flex-direction:column;line-height:1}
.brand-n{font:700 1.3rem/1 var(--f-p);letter-spacing:.02em}
.brand-s{font:600 .8rem/1.3 var(--f-d);color:var(--gr);margin-top:4px}
.brand:hover .chip{color:var(--red)}
.hd-tools{display:flex;align-items:center;gap:10px;grid-column:3}
.lsw{display:inline-flex;border:2px solid var(--ink)}
.lsw a{display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:40px;padding:0 8px;font:700 .8rem/1 var(--f-p);text-decoration:none;color:var(--ink)}
.lsw a+a{border-left:2px solid var(--ink)}
.lsw a[aria-current]{background:var(--ink);color:var(--panel)}
.lsw a:not([aria-current]):hover{background:var(--ghost)}
.menu-btn{grid-column:4;display:inline-flex;align-items:center;gap:10px;min-height:44px;min-width:44px;padding:0 12px;border:2px solid var(--ink);background:var(--panel);color:var(--ink);font:700 .95rem/1 var(--f-d);cursor:pointer}
.mi{display:grid;gap:3px;width:18px}
.mi i{display:block;height:3px;background:currentColor;transition:transform .2s,opacity .2s}
.hd.is-open .menu-btn{background:var(--ink);color:var(--panel)}
.hd.is-open .mi i:nth-child(1){transform:translateY(6px) rotate(45deg)}
.hd.is-open .mi i:nth-child(2){opacity:0}
.hd.is-open .mi i:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.nav ul{list-style:none;margin:0;padding:0}
.nav a{display:flex;align-items:center;min-height:48px;padding:8px 16px;font:600 1rem/1.3 var(--f-d);color:var(--ink);text-decoration:none}
.nav a[aria-current=page]{background:var(--ink);color:var(--panel)}
.nav a:not([aria-current]):hover{box-shadow:inset 0 -4px 0 var(--red)}
@media (max-width:979.98px){
  .hd-cta{display:none}
  .brand-hd,.hd-tools,.menu-btn{grid-row:1}
  .nav{display:none;position:absolute;left:0;right:0;top:100%;background:var(--panel);border-bottom:2px solid var(--ink);box-shadow:0 18px 30px -18px rgba(24,25,27,.5);max-height:calc(100vh - 70px);overflow-y:auto}
  .hd.is-open .nav{display:block}
  .nav ul{padding:8px var(--g) 16px}
  .nav li+li{border-top:1px dashed var(--line)}
  .nav a{padding-inline:12px}
}
@media (max-width:479.98px){
  .menu-t{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}
  .brand-s{display:none}
  .brand-n{font-size:1.15rem}
  .hd-row{column-gap:8px}
}
@media (min-width:980px){
  .hd-row{grid-template-columns:auto 1fr auto;grid-template-areas:"brand . tools" "nav nav nav";min-height:0;padding-top:10px}
  .brand-hd{grid-area:brand}
  .hd-tools{grid-area:tools}
  .menu-btn{display:none}
  .nav{grid-area:nav;margin-top:10px;border-top:1px solid var(--line)}
  .nav ul{display:flex;flex-wrap:wrap}
  .nav li{border-right:1px dotted var(--gr)}
  .nav li:first-child{border-left:1px dotted var(--gr)}
  .nav a{min-height:46px}
  .hd{position:sticky}
}

/* ---------- ghosting + status ---------- */
.ghost{position:absolute;z-index:-1;right:0;top:-.2em;font:700 clamp(56px,9vw,132px)/1 var(--f-p);color:var(--ghost);letter-spacing:-.02em;pointer-events:none;user-select:none;white-space:nowrap;opacity:.55}
.led{display:inline-block;width:10px;height:10px;background:var(--red);flex:0 0 auto;animation:led 2.4s steps(1) infinite}
@keyframes led{0%,70%{background:var(--red)}71%,100%{background:var(--ink)}}
.status{display:inline-flex;align-items:center;gap:10px;margin:0 0 22px;padding:6px 12px;background:var(--ink);color:var(--panel);font:600 .9rem/1.4 var(--f-d)}

/* ---------- home hero ---------- */
.hero{position:relative;padding-top:clamp(28px,5vw,64px)}
.hero-grid{display:grid;gap:36px;align-items:start}
.screen{position:relative;z-index:0;isolation:isolate;padding-top:8px;overflow:hidden}
.screen h1{font-weight:800;font-size:clamp(2rem,1.25rem + 3.1vw,3.55rem);line-height:1.12;letter-spacing:-.015em;margin-bottom:22px;text-shadow:.045em .035em 0 rgba(24,25,27,.09)}
.screen h1:lang(th),.phead h1:lang(th){line-height:1.38;letter-spacing:0}
.lead{font-size:1.14rem;color:var(--gr);max-width:62ch}
.lead p:last-child{margin-bottom:0}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0 30px}
.cells{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));border-top:2px solid var(--ink);border-bottom:2px solid var(--ink)}
.cells li{display:flex;align-items:flex-start;gap:12px;padding:14px 14px 14px 0;font:600 .95rem/1.45 var(--f-d)}
.cells li+li{padding-left:14px;border-left:1px dotted var(--gr)}
.cells .px{width:24px;height:24px;margin-top:1px}
@media (max-width:560px){.cells{grid-template-columns:1fr}.cells li+li{border-left:0;padding-left:0;border-top:1px dotted var(--gr)}}
@media (min-width:980px){
  .hero-grid{grid-template-columns:minmax(0,1fr) minmax(380px,520px);gap:clamp(36px,4vw,64px)}
  .screen{position:sticky;top:140px;padding-top:28px}
}

/* device enclosure around the demo */
.device{position:relative;background:linear-gradient(160deg,#E4E1D8 0%,#D4D0C5 100%);border-radius:30px;padding:14px 14px 20px;
  box-shadow:inset 0 2px 0 rgba(255,255,255,.75),inset 0 -3px 0 rgba(24,25,27,.1),0 0 0 1px #B3AFA3,0 30px 44px -30px rgba(24,25,27,.55);scroll-margin-top:84px}
.dev-top{display:flex;align-items:center;justify-content:space-between;padding:2px 10px 12px}
.vent{width:96px;height:8px;background:repeating-linear-gradient(90deg,#8E8A7F 0 10px,transparent 10px 15px);border-radius:4px;box-shadow:0 1px 0 rgba(255,255,255,.6)}
.dev-win{width:18px;height:18px;border-radius:50%;background:radial-gradient(circle at 50% 50%,#9A968C 0 2px,#2A2B2E 2.5px 5px,#15161A 5.5px);box-shadow:0 1px 0 rgba(255,255,255,.7),inset 0 1px 2px rgba(0,0,0,.5)}
.dev-screen{background:var(--panel);border-radius:12px;padding:14px 14px 12px;box-shadow:inset 0 0 0 3px #232428,inset 0 5px 12px rgba(24,25,27,.2)}
.dev-label{display:flex;flex-wrap:wrap;align-items:center;gap:6px 10px;margin:2px 2px 12px;font:700 1rem/1.3 var(--f-d)}
.dev-sub{flex:1 1 100%;font:500 .85rem/1.4 var(--f-b);color:var(--gr)}
@media (max-width:979.98px){.device{max-width:600px;margin-inline:auto}}
@media (max-width:420px){.device{margin-inline:calc(var(--g) * -.6);padding:10px 8px 14px;border-radius:22px}.dev-screen{padding:10px 8px}}

/* dither ramps */
.ramp{display:grid;grid-template-columns:repeat(6,1fr);height:14px;margin-top:clamp(36px,5vw,64px)}
.ramp i{display:block;background-size:8px 8px}
.ramp i:nth-child(1){background:var(--red)}
.ramp i:nth-child(2){background:var(--d25p) 0 0/8px 8px,var(--red)}
.ramp i:nth-child(3){background-image:var(--d50r)}
.ramp i:nth-child(4){background-image:var(--d25r)}
.ramp i:nth-child(5){background-image:var(--d12r)}
.ramp i:nth-child(6){background-image:var(--d6r)}
.ramp-head{height:10px;margin-top:28px}
.ramp-head i:nth-child(1){background:var(--ink)}
.ramp-head i:nth-child(2){background:var(--d25p) 0 0/8px 8px,var(--ink)}
.ramp-head i:nth-child(3){background-image:var(--d50k)}
.ramp-head i:nth-child(4){background-image:var(--d25k)}
.ramp-head i:nth-child(5){background-image:var(--d12k)}
.ramp-head i:nth-child(6){background-image:none;background:linear-gradient(90deg,var(--red) 0 12px,transparent 12px)}
.ramp-ft{display:grid;grid-template-columns:1fr;grid-template-rows:repeat(6,4px);height:24px;margin:0;background:var(--paper)}
.ramp-ft i:nth-child(1){background-image:var(--d12k)}
.ramp-ft i:nth-child(2){background-image:var(--d25k)}
.ramp-ft i:nth-child(3){background-image:var(--d50k)}
.ramp-ft i:nth-child(4){background:var(--ink);background-image:var(--d25p)}
.ramp-ft i:nth-child(5),.ramp-ft i:nth-child(6){background:var(--ink)}

/* ---------- inner page head ---------- */
.phead{padding-top:22px;position:relative}
.phead-in{position:relative;z-index:0;isolation:isolate;padding:18px 0 0;max-width:980px;overflow:hidden}
.phead h1{font-weight:800;font-size:clamp(1.95rem,1.3rem + 2.6vw,3.2rem);line-height:1.14;letter-spacing:-.012em;margin-bottom:16px;text-shadow:.045em .035em 0 rgba(24,25,27,.09)}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;align-items:center;margin:0;padding:0;font:600 .9rem/1.4 var(--f-d);color:var(--gr)}
.crumbs li{display:inline-flex;align-items:center}
.crumbs li+li::before{content:"";width:6px;height:10px;margin:0 12px;background:var(--red);clip-path:polygon(0 0,34% 0,100% 50%,34% 100%,0 100%,66% 50%)}
.crumbs a{display:inline-flex;align-items:center;min-height:44px;color:var(--gr)}
.crumbs [aria-current]{color:var(--ink)}

/* ---------- page grid, rail, prose ---------- */
.page{display:grid;gap:28px;padding-top:36px;padding-bottom:64px}
.pg-home{padding-top:clamp(40px,5vw,72px)}
@media (min-width:980px){
  .page{grid-template-columns:minmax(0,1fr) 290px;column-gap:clamp(40px,5vw,80px)}
  .rail{grid-column:2;grid-row:1}
  .prose{grid-column:1;grid-row:1}
  .rail-in{position:sticky;top:140px;display:grid;gap:26px}
}
@media (max-width:979.98px){.rail-in{display:grid;gap:16px}}
.gauge{border:2px solid var(--ink);background:var(--panel)}
.gauge-t{display:flex;align-items:center;gap:10px;min-height:48px;padding:8px 14px;background:var(--ink);color:var(--panel);font:700 1rem/1.3 var(--f-d);cursor:pointer;list-style:none}
.gauge-t::-webkit-details-marker{display:none}
.gauge-t::after{content:"";margin-left:auto;width:10px;height:10px;border-right:3px solid currentColor;border-bottom:3px solid currentColor;transform:rotate(45deg) translate(-2px,-2px);transition:transform .2s}
.gauge[open] .gauge-t::after{transform:rotate(-135deg) translate(-2px,-2px)}
.gauge ol{list-style:none;margin:0;padding:10px 12px 12px 40px;position:relative;
  background:linear-gradient(var(--ink),var(--ink)) 22px 12px/2px calc(100% - 24px) no-repeat,repeating-linear-gradient(to bottom,var(--gr) 0 1px,transparent 1px 8px) 14px 12px/8px calc(100% - 24px) no-repeat}
.gauge a{position:relative;display:flex;align-items:center;min-height:44px;padding:6px 0;font:500 .93rem/1.4 var(--f-d);color:var(--gr);text-decoration:none}
.gauge a::before{content:"";position:absolute;left:-22px;top:50%;width:12px;height:2px;background:var(--ink);transform:translateY(-50%)}
.gauge a:hover{color:var(--ink)}
.gauge a.on{color:var(--ink);font-weight:700}
.gauge a.on::before{left:-30px;width:14px;height:14px;background:var(--red);clip-path:polygon(0 0,100% 50%,0 100%)}
.demo-card{border:2px solid var(--ink);background:var(--panel)}
.dc-t{display:flex;align-items:center;gap:10px;margin:0;padding:10px 14px;border-bottom:2px solid var(--ink);font:700 1rem/1.3 var(--f-d);background:repeating-linear-gradient(to bottom,var(--panel) 0 3px,var(--ghost) 3px 4px)}
.dc-t strong{background:var(--panel);padding-right:6px}
.demo-card>p:not(.dc-t){margin:12px 14px 14px;font-size:.95rem;color:var(--gr)}
.demo-card .btn{margin:0 14px 16px}

.prose{min-width:0;max-width:760px;counter-reset:sec}
.prose p,.prose li{font-size:1.06rem}
.prose>.intro-rest{font-size:1.1rem;padding-bottom:6px}
.prose strong{color:var(--ink);font-weight:700}
.prose ul,.prose ol{padding-left:0;margin-bottom:1.2em;list-style:none}
.prose ul li{position:relative;padding-left:26px;margin-bottom:.5em}
.prose ul li::before{content:"";position:absolute;left:2px;top:.72em;width:8px;height:8px;background:var(--red)}
.prose ol{counter-reset:li}
.prose ol li{position:relative;padding-left:40px;margin-bottom:.6em;counter-increment:li}
.prose ol li::before{content:counter(li);position:absolute;left:0;top:.2em;min-width:26px;height:24px;padding:0 4px;display:grid;place-items:center;background:var(--ink);color:var(--panel);font:700 11px/1 var(--f-p)}
.prose h3{font-size:1.24rem;line-height:1.4;margin:1.5em 0 .5em}
.sec{counter-increment:sec;margin-top:clamp(40px,5vw,60px);padding-top:18px;border-top:2px solid var(--ink);position:relative}
.sec-plain{counter-increment:none;border-top:0;padding-top:0}
.sec h2{display:grid;grid-template-columns:auto minmax(0,1fr);gap:14px;align-items:start;font-weight:700;font-size:clamp(1.42rem,1.12rem + 1.15vw,2rem);line-height:1.28;margin-bottom:.8em}
.sec h2:lang(th){line-height:1.45}
.sec h2::before{content:counter(sec,decimal-leading-zero);display:grid;place-items:center;min-width:44px;height:36px;margin-top:.12em;padding:0 6px;background:var(--ink);color:var(--panel);font:700 .9rem/1 var(--f-p);clip-path:var(--step)}
.sec::after{content:"";position:absolute;top:-2px;right:0;width:64px;height:8px;background-image:var(--d50r);background-size:8px 8px}
.faq h2::before{background:var(--red);color:#FBFAF6}
.tbl{overflow-x:auto;margin:0 0 1.4em;border:2px solid var(--ink);background:var(--panel)}
.tbl table{border-collapse:collapse;width:100%;min-width:480px;font-size:.96rem}
.tbl th,.tbl td{padding:10px 12px;text-align:left;vertical-align:top;border-bottom:1px dashed var(--line)}
.tbl thead th,.tbl tr:first-child th{background:var(--ink);color:var(--panel);font:700 .95rem/1.35 var(--f-d)}
.tbl tr:last-child td{border-bottom:0}
.faq-list{border-bottom:1px dashed var(--gr)}
.faq details{border-top:1px dashed var(--gr)}
.faq summary{display:grid;grid-template-columns:minmax(0,1fr) 24px;gap:16px;align-items:center;min-height:56px;padding:12px 0;cursor:pointer;list-style:none;font:600 1.08rem/1.45 var(--f-d)}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover .q{color:var(--red-d)}
.pm{position:relative;width:24px;height:24px;border:2px solid var(--ink);background:var(--panel)}
.pm::before,.pm::after{content:"";position:absolute;background:var(--ink);left:50%;top:50%;transform:translate(-50%,-50%)}
.pm::before{width:10px;height:2px}
.pm::after{width:2px;height:10px}
.faq details[open] .pm{background:var(--ink)}
.faq details[open] .pm::before{background:var(--panel)}
.faq details[open] .pm::after{display:none}
.faq-a{padding:0 40px 14px 0;color:var(--gr)}
.faq-a p:last-child{margin-bottom:0}

/* ---------- cta band ---------- */
.band{position:relative;background:var(--ink);color:var(--night-t);margin-top:8px}
.band::before{content:"";position:absolute;left:0;right:0;top:-16px;height:16px;background:var(--d25k) 0 0/8px 8px repeat-x,var(--d50k) 0 8px/8px 8px repeat-x}
.band-in{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px 32px;padding-block:34px}
.band p{margin:0;max-width:58ch;font:600 clamp(1.1rem,1rem + .5vw,1.35rem)/1.5 var(--f-d)}
.band .btn-red:hover{--bb:var(--panel);--bf:var(--ink)}

/* ---------- related ---------- */
.rel{padding-block:clamp(44px,6vw,80px) clamp(52px,6vw,88px)}
.rel h2{font-weight:800;font-size:clamp(1.5rem,1.2rem + 1vw,2rem);margin-bottom:22px;display:flex;align-items:center;gap:14px}
.rel h2::after{content:"";flex:1;height:10px;background-image:var(--d25k);background-size:8px 8px}
.rel-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,300px),1fr));gap:0 28px;container-type:inline-size}
.rel-list li{border-top:2px solid var(--ink)}
.rel-list a{display:grid;grid-template-columns:auto minmax(0,1fr) 20px;gap:14px;padding:16px 4px 18px 0;text-decoration:none;color:var(--ink);min-height:44px}
.rc-n{font:700 1.5rem/1 var(--f-p);color:var(--red);padding-top:4px}
.rc-t strong{display:block;font:700 1.08rem/1.4 var(--f-d);margin-bottom:4px}
.rc-t span{display:block;font-size:.95rem;line-height:1.55;color:var(--gr)}
.rc-a{align-self:center;width:12px;height:18px;background:var(--ink);clip-path:polygon(0 0,40% 0,100% 50%,40% 100%,0 100%,60% 50%);transition:transform .15s}
.rel-list a:hover{background:var(--panel)}
.rel-list a:hover .rc-a{transform:translateX(4px);background:var(--red)}

/* ---------- footer (dark e-ink) ---------- */
.ft{background:var(--night);color:var(--night-t);font-size:.95rem}
.ft a{color:var(--night-t);text-decoration-color:var(--red)}
.ft a:hover{color:#fff}
.ft .wrap{padding-top:44px;padding-bottom:28px}
.ft-grid{display:grid;gap:32px;grid-template-columns:1fr}
@media (min-width:760px){.ft-grid{grid-template-columns:minmax(0,1.4fr) 1fr 1fr}}
.brand-ft{color:var(--night-t)}
.brand-ft .chip{color:var(--night-t)}
.brand-ft .chip rect[fill]{fill:var(--night-2)}
.brand-ft .brand-s{color:var(--night-m)}
.ft-about p{margin:16px 0 0;color:var(--night-m);max-width:48ch;line-height:1.7}
.ft h2{font:700 1rem/1.3 var(--f-d);color:var(--night-t);margin:0 0 12px;padding-bottom:10px;border-bottom:1px dotted #55575C}
.ft ul{list-style:none;margin:0;padding:0}
.ft li a{display:flex;align-items:center;min-height:44px;text-decoration:none;color:var(--night-m)}
.ft li a:hover{color:var(--night-t);box-shadow:inset 3px 0 0 var(--red);padding-left:10px}
.ft-bot{display:flex;flex-wrap:wrap;align-items:center;gap:14px 20px;margin-top:32px;padding-top:20px;border-top:1px solid #3A3C41;color:var(--night-m)}
.age{display:inline-grid;place-items:center;min-width:48px;height:34px;padding:0 8px;background:var(--red);color:#FBFAF6;font:700 .95rem/1 var(--f-p);clip-path:var(--step)}
.ft-lsw{margin-left:auto}
.ft .lsw{border-color:var(--night-t)}
.ft .lsw a{color:var(--night-t);min-height:44px}
.ft .lsw a+a{border-color:var(--night-t)}
.ft .lsw a[aria-current]{background:var(--night-t);color:var(--ink)}
.ft .lsw a:not([aria-current]):hover{background:var(--night-2)}

/* ---------- 404 ---------- */
.nf{padding-block:64px 88px}
.nf-code{font:700 clamp(80px,20vw,180px)/1 var(--f-p);color:var(--ghost);margin:0 0 12px}
.nf h1{font-size:clamp(1.8rem,1.3rem + 2vw,2.8rem)}
.nf .ft-bot{margin-top:0}

/* Latin-only refinements */
:lang(en) .status,:lang(en) .gauge-t{letter-spacing:.01em}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
}
@media (prefers-reduced-motion:no-preference){
  .ghost{animation:refresh 1.1s steps(1) .2s 1 both}
  @keyframes refresh{0%{color:var(--ink)}18%{color:var(--paper)}36%{color:var(--ink)}54%{color:var(--ghost)}}
}