:root {
  --head: 4.45rem;
  --void: #140e1c;
  --lilac: #c9b7ff;
  --mint: #7ee0c6;
  --fog: #d8d2e6;
  --mute: #8e86a0;
  --mono: "Azeret Mono", ui-monospace, monospace;
  --sans: "Plus Jakarta Sans", system-ui, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--head) + 5.2rem); }
body { margin: 0; background: var(--void); color: var(--fog); font-family: var(--sans); font-size: 16.6px; line-height: 1.62; }
img { max-width: 100%; display: block; }
a { color: var(--mint); }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 1rem; top: 1rem; z-index: 40; background: var(--mint); color: var(--void); padding: 0.4rem; }
.mast { position: sticky; top: 0; z-index: 20; }
.ribbon { margin: 0; background: var(--lilac); color: var(--void); text-align: center; padding: 0.4rem 1rem; font-size: 0.72rem; font-family: var(--mono); }
.head { display: flex; align-items: center; gap: 1rem; padding: 0.7rem 1.2rem; min-height: var(--head); background: #0c0812; position: relative; }
.brand { display: flex; gap: 0.7rem; align-items: center; text-decoration: none; color: var(--fog); min-width: 0; }
.px { width: 28px; height: 28px; flex-shrink: 0; background: repeating-linear-gradient(90deg, var(--mint) 0 4px, transparent 4px 8px), repeating-linear-gradient(0deg, var(--lilac) 0 4px, transparent 4px 8px); }
.brand strong { display: block; font-family: var(--mono); font-size: 0.88rem; letter-spacing: 0.08em; }
.brand small { display: block; font-size: 0.68rem; color: var(--mute); }
.nav { display: none; gap: 0.85rem; margin-left: auto; }
.nav a { color: var(--fog); text-decoration: none; font-size: 0.76rem; letter-spacing: 0.08em; text-transform: uppercase; font-family: var(--mono); }
.mail { display: none; background: var(--mint); color: var(--void); text-decoration: none; padding: 0.4rem 0.65rem; font-size: 0.76rem; font-weight: 700; }
.burger { margin-left: auto; width: 42px; height: 42px; border: 1px solid var(--lilac); background: linear-gradient(var(--lilac), var(--lilac)) center 13px / 16px 2px no-repeat, linear-gradient(var(--lilac), var(--lilac)) center 20px / 16px 2px no-repeat, linear-gradient(var(--lilac), var(--lilac)) center 27px / 16px 2px no-repeat; cursor: pointer; }
.panel { display: grid; padding: 0.85rem 1.2rem; background: #1a1324; position: absolute; top: 100%; left: 0; right: 0; z-index: 19; max-height: calc(100dvh - var(--head) - 2.2rem); overflow: auto; }
.panel[hidden] { display: none !important; }
.panel a { padding: 0.45rem 0; color: var(--fog); text-decoration: none; border-bottom: 1px solid rgba(201,183,255,0.15); font-family: var(--mono); font-size: 0.85rem; }
.hero { padding: 3rem 1.2rem 3.2rem; }
.kicker { font-family: var(--mono); letter-spacing: 0.08em; font-size: 0.72rem; color: var(--lilac); }
h1 { font-size: clamp(2rem, 6vw, 3.4rem); line-height: 1.08; max-width: 16ch; margin: 0.45rem 0 1rem; }
h1 em { color: var(--mint); font-style: normal; }
.lead { max-width: 66ch; color: var(--mute); }
.cta { display: flex; flex-wrap: wrap; gap: 0.8rem; margin: 1.3rem 0; }
.btn { display: inline-flex; background: var(--mint); color: var(--void); text-decoration: none; border: 0; padding: 0.8rem 1.1rem; font: 700 0.95rem/1 var(--sans); cursor: pointer; }
.ghost { color: var(--fog); align-self: center; text-decoration: none; border-bottom: 1px solid var(--lilac); }
.facts { list-style: none; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 0.9rem; }
.facts span { display: block; font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.08em; color: var(--lilac); }
section, form { scroll-margin-top: calc(var(--head) + 5.2rem); }
section { padding: 3rem 1.2rem; }
h2 { font-size: clamp(1.45rem, 3.3vw, 2.1rem); max-width: 22ch; }
.pair, .noty-grid { display: grid; gap: 1.2rem; }
.mux { background: #1a1324; }
.ports { display: flex; flex-wrap: wrap; gap: 0.35rem; margin: 1rem 0; }
.ports button { background: transparent; color: var(--fog); border: 1px solid rgba(201,183,255,0.3); font-family: var(--mono); font-size: 0.72rem; padding: 0.45rem 0.6rem; cursor: pointer; }
.ports button.is-on { background: var(--lilac); color: var(--void); }
.frame { background: var(--void); padding: 1.15rem; border-left: 4px solid var(--mint); }
.frame .code { font-family: var(--mono); color: var(--mint); margin: 0; }
.frame p, .detal p, .stos p, .reszta p { color: var(--mute); }
.pair article { background: #1a1324; padding: 1.05rem; border-top: 3px solid var(--lilac); }
.stos { background: #0c0812; }
.reszta { background: #1a1324; }
.noty-grid article { padding: 1rem 0; border-top: 1px solid rgba(201,183,255,0.15); }
.faq details { border-bottom: 1px solid rgba(201,183,255,0.15); padding: 0.75rem 0; }
.faq summary { cursor: pointer; font-weight: 700; font-family: var(--mono); font-size: 0.9rem; }
.krs { background: #0c0812; }
.table > div { display: grid; gap: 0.2rem; padding: 0.7rem 0; border-bottom: 1px solid rgba(201,183,255,0.12); }
.table span { font-family: var(--mono); font-size: 0.68rem; color: var(--lilac); }
.fine { color: var(--mute); font-size: 0.88rem; }
.port { display: grid; gap: 1.3rem; }
address { font-style: normal; line-height: 1.7; }
form { display: grid; gap: 0.7rem; background: #1a1324; padding: 1.1rem; }
label { display: grid; gap: 0.25rem; font-size: 0.82rem; font-family: var(--mono); }
input, select, textarea { font: 1rem/1.4 var(--sans); padding: 0.6rem; background: var(--void); color: var(--fog); border: 1px solid rgba(201,183,255,0.25); }
.form-status.ok { color: var(--mint); }
footer { padding: 1.8rem 1.2rem 2.4rem; background: #0c0812; color: var(--mute); font-size: 0.9rem; }
footer strong { color: var(--lilac); display: block; font-family: var(--mono); }
@media (min-width: 880px) {
  .nav, .mail { display: flex; }
  .burger { display: none; }
  .panel, .panel[hidden] { display: none !important; }
  .hero, section, footer { padding-left: 6.5vw; padding-right: 6.5vw; }
  .facts { grid-template-columns: repeat(4, 1fr); }
  .pair, .port { grid-template-columns: 1fr 1fr; align-items: start; }
  .noty-grid { grid-template-columns: 1fr 1fr 1fr; }
  .table > div { grid-template-columns: 240px 1fr; }
}
@media (max-width: 520px) {
  .brand small { display: none; }
  h1 { overflow-wrap: anywhere; }
}