:root{--cond:"Roboto Condensed","Avenir Next Condensed","Helvetica Neue Condensed","Arial Narrow",sans-serif;--sans:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;--hand:Georgia,"Times New Roman",serif;
  --paper:#f6f3ec;--paper2:#efeadf;--ink:#1f3550;--graf:#3a3f44;--mu:#6b7480;--line:#c9cfd6;--fine:#dfe3e8;
  --I:#1f3550;--A:#04a9b9;--P:#6a9a00;--U:#1d3a7a;
  --ok:#2e7d4f;--okb:#e6f2ea;--up:#a86400;--upb:#fbf1df;--dn:#2f5aa8;--dnb:#e8eefb;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--graf);font-family:var(--sans);font-size:16px;line-height:1.55;
  background-image:
   linear-gradient(rgba(31,53,80,.045) 1px,transparent 1px),
   linear-gradient(90deg,rgba(31,53,80,.045) 1px,transparent 1px),
   linear-gradient(rgba(31,53,80,.025) 1px,transparent 1px),
   linear-gradient(90deg,rgba(31,53,80,.025) 1px,transparent 1px);
  background-size:120px 120px,120px 120px,24px 24px,24px 24px}
a{color:var(--ink)}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
h1,h2,h3,.tech{font-family:var(--cond);color:var(--ink);font-weight:500;letter-spacing:.04em;line-height:1.08;margin:0}
h1{font-size:clamp(34px,6vw,58px)}
h2{font-size:clamp(28px,4.2vw,40px)}
h3{font-size:22px}
.kicker{font-family:var(--cond);text-transform:uppercase;letter-spacing:.22em;font-size:13px;color:var(--mu)}
.lead{font-size:clamp(17px,2.2vw,20px);color:var(--graf);max-width:640px}
.lead em{font-style:normal;color:var(--mu)}
.conn{font-family:var(--hand);font-style:italic;color:#0b8c99}
.note{font-family:var(--hand);font-style:italic;color:var(--ink);font-size:16px;line-height:1.35;border-left:2px solid var(--A);padding:2px 0 2px 12px}
/* topbar */
.top{border-bottom:1px solid var(--line);background:rgba(246,243,236,.92);backdrop-filter:blur(4px);position:sticky;top:0;z-index:20}
.top .wrap{display:flex;align-items:center;justify-content:space-between;height:60px;gap:12px}
.top nav{display:flex;gap:18px;font-size:14px}
.top nav a{text-decoration:none;color:var(--graf)}
.top nav a:hover{color:var(--A)}
@media(max-width:760px){.top nav{display:none}}
/* logo */
.logo{display:inline-flex;align-items:center;text-decoration:none}
.logo svg{display:block}
/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;font:600 15px var(--sans);text-decoration:none;border-radius:2px;padding:12px 18px;border:1.5px solid var(--ink);cursor:pointer;transition:.15s}
.btn.pri{background:var(--ink);color:#fff}
.btn.pri:hover{background:#16283d}
.btn.sec{background:transparent;color:var(--ink)}
.btn.sec:hover{background:rgba(31,53,80,.06)}
/* sheet frame (lámina) */
.sheet{position:relative;border:1.5px solid var(--ink);background:rgba(255,255,255,.55);padding:28px}
.sheet:before{content:"";position:absolute;inset:6px;border:.6px solid var(--line);pointer-events:none}
.dim{display:flex;align-items:center;gap:8px;color:var(--mu);font:500 12px var(--cond);letter-spacing:.12em;text-transform:uppercase}
.dim:before,.dim:after{content:"";flex:1;height:0;border-top:.8px solid var(--mu)}
.dim span{white-space:nowrap}
/* cajetín */
.caj{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;border:1.5px solid var(--ink);font-family:var(--cond);background:rgba(255,255,255,.6)}
.caj div{border-left:.8px solid var(--ink);padding:6px 10px;min-width:0}
.caj div:first-child{border-left:0}
.caj small{display:block;font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--mu)}
.caj b{font-weight:500;color:var(--ink);font-size:16px;letter-spacing:.06em}
@media(max-width:640px){.caj{grid-template-columns:1fr 1fr}.caj div:nth-child(3){border-left:0}.caj div:nth-child(n+3){border-top:.8px solid var(--ink)}}
section{padding:64px 0}
.hr{height:0;border-top:1px solid var(--line);margin:0}
.tag{display:inline-block;font:600 11px var(--sans);letter-spacing:.04em;padding:2px 7px;border:1px solid var(--line);color:var(--mu);border-radius:2px;background:#fff;white-space:nowrap}
.tag.est{border-color:#d8c6a3;color:#8a6a2c;background:#fbf6ea}
.tag.ver{border-color:#a9d6c0;color:#2e7d4f;background:#eef7f2}
footer.site{border-top:1.5px solid var(--ink);padding:28px 0 40px;font-size:13px;color:var(--mu)}
footer.site a{color:var(--graf)}
.modal{position:fixed;inset:0;background:rgba(20,30,45,.45);display:flex;align-items:flex-end;justify-content:center;z-index:50}
.modal[hidden]{display:none}
.mbox{background:var(--paper);width:100%;max-width:640px;max-height:90vh;overflow:auto;border:1.5px solid var(--ink);padding:22px 20px 24px}
@media(min-width:700px){.modal{align-items:center}}
table.apu{width:100%;border-collapse:collapse;font-size:13.5px;margin:6px 0 14px}
table.apu th{font:500 12px var(--cond);letter-spacing:.14em;text-transform:uppercase;color:var(--mu);text-align:left;border-bottom:1px solid var(--ink);padding:6px 4px}
table.apu td{border-bottom:.6px solid var(--fine);padding:6px 4px;vertical-align:top}
table.apu td.n{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}
table.apu tr.s td{font-weight:700;color:var(--ink);border-bottom:1px solid var(--ink)}
.blk{font:500 13px var(--cond);letter-spacing:.16em;text-transform:uppercase;color:var(--ink);margin-top:12px}
input[type=number],select{font:500 16px var(--sans);padding:9px 10px;border:1.2px solid var(--line);border-radius:2px;background:#fff;color:var(--graf);width:100%}
input[type=number]:focus,select:focus{outline:2px solid rgba(4,169,185,.35);border-color:var(--A)}
.st{border:1px solid;padding:12px 14px;margin-top:10px;font-size:14.5px}
.st.ok{border-color:#a9d6c0;background:var(--okb)}.st.up{border-color:#e6c48a;background:var(--upb)}.st.dn{border-color:#aebde8;background:var(--dnb)}
.st h4{margin:0 0 4px;font:600 15px var(--sans);color:var(--ink)}
.st ul{margin:6px 0 0 18px;padding:0}.st li{margin:3px 0}