:root {
  --bg: #F3F5F7; --panel: #FFFFFF; --text: #14201B; --muted: #5E6B66; --border: #DCE2E0;
  --accent: #3FD0A4; --accent-ink: #0B2B22; --accent-soft: #E3F8F1; --bad: #C2413B; --bad-soft: #FBEAEA;
  --warn: #9A6A00; --warn-soft: #FFF4D6; --ok: #127A5A; --shadow: 0 1px 2px rgba(10, 30, 25, .06), 0 8px 24px rgba(10, 30, 25, .06);
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0F1513; --panel: #17201D; --text: #E7EEEB; --muted: #9AA8A3; --border: #2A3632;
    --accent-soft: #143A2F; --bad-soft: #3A1B1A; --warn-soft: #3A2E10; --warn: #E7B84B; --ok: #5FE0B6; --shadow: none; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 15px/1.55 "Segoe UI", system-ui, -apple-system, Roboto, sans-serif; }
a { color: var(--ok); text-decoration: none; }
a:hover { text-decoration: underline; }
.top { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 12px 24px; background: var(--panel);
  border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 5; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 650; font-size: 17px; }
.brand em { font-style: normal; font-weight: 500; color: var(--muted); font-size: 13px; margin-left: 4px; }
.top nav { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.top nav a { color: var(--text); }
.top nav a.lang { color: var(--muted); font-size: 13px; }
main { max-width: 1120px; margin: 0 auto; padding: 32px 16px 48px; }
footer { text-align: center; color: var(--muted); font-size: 12px; padding: 24px 16px 40px; }
h1 { font-size: 26px; line-height: 1.25; margin: 0 0 12px; }
h2 { font-size: 17px; margin: 28px 0 10px; }
h3 { font-size: 15px; margin: 0 0 6px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.panel { background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 28px; box-shadow: var(--shadow); }
.panel.narrow { max-width: 440px; margin: 24px auto; }
.panel.center { text-align: center; }
.panel + .panel { margin-top: 20px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; height: 40px; padding: 0 18px; border-radius: 10px;
  border: 1px solid transparent; background: var(--accent); color: var(--accent-ink); font: inherit; font-weight: 600; cursor: pointer; }
.btn:hover { filter: brightness(1.04); text-decoration: none; }
.btn.ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn.danger { background: transparent; color: var(--bad); border-color: var(--bad); }
.btn.small { height: 32px; padding: 0 12px; font-size: 13px; }
.btn.wide { width: 100%; margin-top: 8px; }
button.link { background: none; border: none; padding: 0; color: var(--text); font: inherit; cursor: pointer; }
form.inline { display: inline-flex; gap: 6px; align-items: center; margin: 0; }
.row { display: flex; gap: 10px; align-items: center; margin: 12px 0; }
.row.wrap { flex-wrap: wrap; }
.row.between { justify-content: space-between; flex-wrap: wrap; }
label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--muted); margin: 10px 0; }
input, select { height: 40px; border: 1px solid var(--border); border-radius: 10px; background: var(--bg); color: var(--text);
  padding: 0 12px; font: inherit; min-width: 0; }
input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.row input:not([type=hidden]) { flex: 1; }
input.short { width: 90px; flex: none !important; }
input.copy { width: 100%; margin-top: 8px; font-family: ui-monospace, Consolas, monospace; font-size: 12px; }
.note { padding: 10px 14px; border-radius: 10px; background: var(--accent-soft); margin: 10px 0; font-size: 14px; }
.note.bad { background: var(--bad-soft); color: var(--bad); }
.note.warn { background: var(--warn-soft); color: var(--warn); }
.tag { display: inline-block; padding: 2px 8px; border-radius: 99px; font-size: 12px; background: var(--accent-soft); color: var(--ok); white-space: nowrap; }
.tag.bad { background: var(--bad-soft); color: var(--bad); }
.tag.warn { background: var(--warn-soft); color: var(--warn); }
.tag.off { background: var(--bg); color: var(--muted); border: 1px solid var(--border); }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
td, th { padding: 9px 8px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: middle; }
th { font-size: 12px; color: var(--muted); font-weight: 600; }
td.num { text-align: right; }
tr.dim { opacity: .55; }
.panel.wide { overflow-x: auto; }
code { font-family: ui-monospace, Consolas, monospace; font-size: 12px; word-break: break-all; }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 10px; margin-bottom: 8px; }
.stats div { background: var(--bg); border-radius: 10px; padding: 10px 12px; font-size: 12px; color: var(--muted); }
.stats b { display: block; font-size: 22px; color: var(--text); }
/* landing */
.hero { display: grid; grid-template-columns: 1.2fr 1fr; gap: 32px; align-items: center; padding: 24px 0 40px; }
.hero h1 { font-size: 38px; letter-spacing: -.01em; }
.lead { font-size: 17px; color: var(--muted); max-width: 560px; }
.hero-art { aspect-ratio: 4 / 3; border-radius: 18px; background: var(--panel); border: 1px solid var(--border); box-shadow: var(--shadow);
  display: grid; place-items: center; overflow: hidden; }
.plot { position: relative; width: 74%; height: 70%; border: 2px dashed var(--accent); border-radius: 6px; transform: rotate(-8deg);
  background: repeating-linear-gradient(45deg, transparent 0 10px, var(--accent-soft) 10px 11px); }
.plot i { position: absolute; background: var(--text); opacity: .82; border-radius: 3px; }
.plot i:nth-child(1) { left: 10%; top: 12%; width: 22%; height: 58%; }
.plot i:nth-child(2) { left: 42%; top: 12%; width: 20%; height: 40%; }
.plot i:nth-child(3) { left: 70%; top: 30%; width: 20%; height: 50%; }
.plot b { position: absolute; left: 0; right: 0; bottom: 8%; height: 9%; background: var(--muted); opacity: .35; }
.grid4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 28px; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 18px; }
.card p { margin: 0; color: var(--muted); font-size: 14px; }
#lokalnie, #wymagania { margin-bottom: 20px; }
.h2big { font-size: 22px; margin: 0 0 8px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px 28px; margin-top: 18px; }
.grid2 p { margin: 0; color: var(--muted); font-size: 14px; }
.scroll { overflow-x: auto; }
table.req th[scope=row] { color: var(--text); font-size: 14px; white-space: nowrap; }
table.req td { color: var(--muted); }
@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; }
  .hero h1 { font-size: 30px; }
  .grid4 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
  .grid4, .grid2 { grid-template-columns: 1fr; }
  .top { padding: 10px 16px; }
  .panel { padding: 20px 16px; }
}
.center { text-align: center; }

pre { background: var(--bg); border: 1px solid var(--border); padding: 10px 12px; border-radius: 8px; font-size: 13px; white-space: pre; }