/* ==========================================================================
   x-lite.pl — arkusz stylów serwisu

   Kolejność: reset → tokeny → typografia → pomoce → nagłówek → sekcje →
   hero → komponenty → instrukcja → tabela → FAQ → stopka → rysunki →
   responsywność → druk.

   Reguła kolorów obowiązująca w całym serwisie i we wszystkich rysunkach:
     azur   (--brand)  — program, odnośniki, działanie główne, tor połączenia
     zieleń (--signal) — stan potwierdzony, rejestracja, zielona słuchawka
     koral  (--alert)  — zakończenie rozmowy, ostrzeżenie, czerwona słuchawka
     bursztyn (--amber)— uwaga redakcyjna, „sprawdź u operatora”
     grafit (--deep)   — panele ciemne w OBU motywach (hero, pasek CTA, stopka)

   Motyw: tokeny w :root, powtórzone w @media (prefers-color-scheme: dark)
   pod :root:not([data-theme="light"]) oraz w :root[data-theme="dark"],
   żeby ręczny przełącznik wygrywał w obie strony.
   Żaden kolor nie jest zdefiniowany wyłącznie w bloku ciemnym.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Reset
   -------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}

body { margin: 0; }
img, svg, video, canvas { display: block; max-width: 100%; }
img { height: auto; }
button, input, select, textarea { font: inherit; color: inherit; }
h1, h2, h3, h4, h5, p, figure, blockquote, dl, dd { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; width: 100%; }
summary::-webkit-details-marker { display: none; }

/* Elementy włączane dopiero skryptem (kopiowanie wartości). Reguła musi być
   !important, bo te klasy ustawiają własny display. */
[hidden] { display: none !important; }

/* --------------------------------------------------------------------------
   2. Tokeny — motyw jasny
   -------------------------------------------------------------------------- */
:root {
  /* tła i krawędzie */
  --bg:           #f4f7fa;
  --bg-soft:      #eaeff6;
  --bg-tint:      #f9fbfd;
  --card:         #ffffff;
  --card-2:       #f6f9fc;
  --line:         #dbe3ed;
  --line-soft:    #e7ecf3;
  --line-strong:  #bdc9d8;

  /* tekst */
  --ink:    #0b1622;
  --text:   #42526a;
  --muted:  #5f7089;
  --faint:  #7d8da0;

  /* panele ciemne — identyczne w obu motywach */
  --deep:        #0a121c;
  --deep-2:      #101c2b;
  --deep-3:      #16243a;
  --deep-line:   #203148;
  --deep-ink:    #eef4fb;
  --deep-text:   #aebfd2;
  --deep-muted:  #7c8ea6;

  /* płyta pod zrzutem — te same wartości w obu motywach (patrz sekcja 13) */
  --plate:        #ffffff;
  --plate-line:   #6e8296;
  --plate-ink:    #0e1720;
  --plate-muted:  #56677a;

  /* azur — program, odnośniki, działanie główne */
  --brand:        #0f6fb8;
  --brand-2:      #1a86d6;
  --brand-bright: #38a8ee;
  --brand-soft:   #e8f2fb;
  --brand-line:   #bedaf2;

  /* zieleń — stan potwierdzony, rejestracja */
  --signal:       #0f7a57;
  --signal-soft:  #e3f4ed;
  --signal-line:  #b6e0d0;

  /* koral — zakończenie rozmowy, ostrzeżenie */
  --alert:        #b43f2a;
  --alert-soft:   #fceeeb;
  --alert-line:   #f1cec6;

  /* bursztyn — uwaga redakcyjna */
  --amber:        #94620a;
  --amber-soft:   #fbf1da;
  --amber-line:   #ead7ab;

  --shadow-xs: 0 1px 2px rgba(11, 22, 34, .06);
  --shadow-sm: 0 1px 2px rgba(11, 22, 34, .05), 0 3px 10px rgba(11, 22, 34, .05);
  --shadow-md: 0 2px 5px rgba(11, 22, 34, .06), 0 14px 32px -12px rgba(11, 22, 34, .20);
  --shadow-lg: 0 4px 10px rgba(11, 22, 34, .07), 0 36px 70px -28px rgba(11, 22, 34, .32);
  --ring:      #1a86d6;

  --r-xs: 6px;
  --r-sm: 10px;
  --r-md: 14px;
  --r-lg: 22px;
  --r-xl: 30px;
  --r-full: 999px;

  --header-h: 72px;
  --maxw: 1200px;

  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  --display: "Space Grotesk", "Inter", -apple-system, "Segoe UI", Arial, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", "Cascadia Mono", Consolas, "Liberation Mono", monospace;

  color-scheme: light;
}

/* --------------------------------------------------------------------------
   3. Tokeny — motyw ciemny (systemowy i wymuszony)
   -------------------------------------------------------------------------- */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg:           #070c13;
    --bg-soft:      #0c131c;
    --bg-tint:      #090f17;
    --card:         #0f1823;
    --card-2:       #14202e;
    --line:         #1e2c3c;
    --line-soft:    #17222f;
    --line-strong:  #32455c;

    --ink:    #e9f1f9;
    --text:   #b2c0d1;
    --muted:  #8a9aae;
    --faint:  #6f8095;

    --deep:        #060b12;
    --deep-2:      #0c1520;
    --deep-3:      #13202f;
    --deep-line:   #1c2b3d;
    --deep-ink:    #eef4fb;
    --deep-text:   #aebfd2;
    --deep-muted:  #7c8ea6;

  /* płyta pod zrzutem — te same wartości w obu motywach (patrz sekcja 13) */
  --plate:        #ffffff;
  --plate-line:   #6e8296;
  --plate-ink:    #0e1720;
  --plate-muted:  #56677a;

    --brand:        #52b1f2;
    --brand-2:      #72c3fb;
    --brand-bright: #93d4ff;
    --brand-soft:   #0a2334;
    --brand-line:   #1c4260;

    --signal:       #45d3a0;
    --signal-soft:  #06251b;
    --signal-line:  #164536;

    --alert:        #f38d74;
    --alert-soft:   #2a120c;
    --alert-line:   #4a2118;

    --amber:        #e2ae59;
    --amber-soft:   #241a08;
    --amber-line:   #453419;

    --shadow-xs: 0 1px 2px rgba(0, 0, 0, .5);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, .5), 0 3px 10px rgba(0, 0, 0, .38);
    --shadow-md: 0 2px 6px rgba(0, 0, 0, .5), 0 14px 32px -12px rgba(0, 0, 0, .6);
    --shadow-lg: 0 4px 12px rgba(0, 0, 0, .55), 0 36px 70px -28px rgba(0, 0, 0, .7);
    --ring:      #72c3fb;

    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg:           #070c13;
  --bg-soft:      #0c131c;
  --bg-tint:      #090f17;
  --card:         #0f1823;
  --card-2:       #14202e;
  --line:         #1e2c3c;
  --line-soft:    #17222f;
  --line-strong:  #32455c;

  --ink:    #e9f1f9;
  --text:   #b2c0d1;
  --muted:  #8a9aae;
  --faint:  #6f8095;

  --deep:        #060b12;
  --deep-2:      #0c1520;
  --deep-3:      #13202f;
  --deep-line:   #1c2b3d;
  --deep-ink:    #eef4fb;
  --deep-text:   #aebfd2;
  --deep-muted:  #7c8ea6;

  /* płyta pod zrzutem — te same wartości w obu motywach (patrz sekcja 13) */
  --plate:        #ffffff;
  --plate-line:   #6e8296;
  --plate-ink:    #0e1720;
  --plate-muted:  #56677a;

  --brand:        #52b1f2;
  --brand-2:      #72c3fb;
  --brand-bright: #93d4ff;
  --brand-soft:   #0a2334;
  --brand-line:   #1c4260;

  --signal:       #45d3a0;
  --signal-soft:  #06251b;
  --signal-line:  #164536;

  --alert:        #f38d74;
  --alert-soft:   #2a120c;
  --alert-line:   #4a2118;

  --amber:        #e2ae59;
  --amber-soft:   #241a08;
  --amber-line:   #453419;

  --shadow-xs: 0 1px 2px rgba(0, 0, 0, .5);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, .5), 0 3px 10px rgba(0, 0, 0, .38);
  --shadow-md: 0 2px 6px rgba(0, 0, 0, .5), 0 14px 32px -12px rgba(0, 0, 0, .6);
  --shadow-lg: 0 4px 12px rgba(0, 0, 0, .55), 0 36px 70px -28px rgba(0, 0, 0, .7);
  --ring:      #72c3fb;

  color-scheme: dark;
}

/* --------------------------------------------------------------------------
   4. Typografia
   -------------------------------------------------------------------------- */
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16.5px;
  line-height: 1.68;
  font-feature-settings: "kern" 1, "liga" 1, "calt" 1;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--display);
  color: var(--ink);
  font-weight: 600;
  line-height: 1.14;
  letter-spacing: -.022em;
  text-wrap: balance;
}

h1 { font-size: clamp(2.15rem, 1.35rem + 3vw, 3.5rem); letter-spacing: -.035em; }
h2 { font-size: clamp(1.6rem, 1.2rem + 1.5vw, 2.35rem); letter-spacing: -.028em; }
h3 { font-size: clamp(1.14rem, 1.02rem + .48vw, 1.36rem); }
h4 { font-size: 1.02rem; letter-spacing: -.01em; }

p { margin: 0 0 1.05em; }
p:last-child { margin-bottom: 0; }

strong, b { font-weight: 600; color: var(--ink); }
em { font-style: italic; }

code, kbd, samp {
  font-family: var(--mono);
  font-size: .875em;
  font-weight: 500;
}

.lead {
  font-size: clamp(1.05rem, 1rem + .38vw, 1.22rem);
  line-height: 1.6;
  color: var(--text);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .62rem;
  font-family: var(--mono);
  font-size: .715rem;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--brand);
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
  opacity: .55;
}
.eyebrow.is-plain::before { display: none; }

.dim { color: var(--muted); }
.nowrap { white-space: nowrap; }

::selection { background: var(--brand); color: #fff; }

/* --------------------------------------------------------------------------
   5. Pomoce
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: clamp(1.15rem, .5rem + 2.4vw, 2.6rem);
}
.container-narrow { max-width: 900px; }

.sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* Tło grafitowe zamiast barwy marki: w motywie ciemnym --brand jest jasny
   i biały napis na nim nie spełniłby wymagań kontrastu. */
.skip-link {
  position: absolute;
  left: 1rem; top: -120px;
  z-index: 300;
  background: var(--deep);
  color: #fff;
  border: 1px solid var(--brand);
  padding: .7rem 1.2rem;
  border-radius: var(--r-sm);
  font-weight: 600;
  font-size: .92rem;
  box-shadow: var(--shadow-md);
  transition: top .18s ease;
}
.skip-link:focus { top: 1rem; }

:where(a, button, summary, input, [tabindex]):focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 2px;
  border-radius: var(--r-xs);
}

.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }

.ic {
  width: 1.24em; height: 1.24em;
  flex: none;
  fill: none;
  stroke: currentColor;
  vertical-align: -.24em;
}
.ic-sm { width: 1em; height: 1em; }
.ic-lg { width: 1.55em; height: 1.55em; }

.progress {
  position: fixed;
  inset: 0 0 auto 0;
  height: 2px;
  z-index: 120;
  background: linear-gradient(90deg, var(--brand), var(--brand-bright));
  transform: scaleX(0);
  transform-origin: 0 50%;
  will-change: transform;
}

/* --------------------------------------------------------------------------
   6. Nagłówek serwisu
   -------------------------------------------------------------------------- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: saturate(1.5) blur(14px);
  -webkit-backdrop-filter: saturate(1.5) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s ease, box-shadow .2s ease, background-color .2s ease;
}
@supports not (backdrop-filter: blur(2px)) { .header { background: var(--bg); } }
.header.is-stuck { border-bottom-color: var(--line); box-shadow: var(--shadow-sm); }
.header[data-nav-open="true"] { background: var(--bg); }

.header-inner {
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 1.1rem;
}

.brand { display: inline-flex; align-items: center; gap: .68rem; flex: none; }
.brand-mark { width: 38px; height: 38px; flex: none; border-radius: 11px; }
.brand-text { display: grid; line-height: 1.08; }
.brand-name {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.18rem;
  letter-spacing: -.035em;
  color: var(--ink);
}
.brand-sub {
  font-family: var(--mono);
  font-size: .625rem;
  font-weight: 500;
  letter-spacing: .13em;
  text-transform: uppercase;
  color: var(--muted);
}

.nav { margin-left: auto; }
.nav-list { display: flex; align-items: center; gap: .1rem; }
.nav-list a {
  display: block;
  padding: .52rem .74rem;
  border-radius: var(--r-sm);
  font-size: .925rem;
  font-weight: 500;
  color: var(--text);
  transition: color .15s ease, background-color .15s ease;
}
.nav-list a:hover { color: var(--ink); background: var(--bg-soft); }
.nav-list a[aria-current] {
  color: var(--brand);
  background: var(--brand-soft);
  font-weight: 600;
}

.header-tools { flex: none; display: flex; align-items: center; gap: .55rem; }

.icon-btn {
  width: 40px; height: 40px;
  display: grid; place-items: center;
  padding: 0;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  color: var(--text);
  cursor: pointer;
  transition: color .15s ease, border-color .15s ease, background-color .15s ease;
}
.icon-btn:hover { color: var(--ink); border-color: var(--line-strong); background: var(--card); }
.icon-btn .ic { width: 19px; height: 19px; }

/* Przycisk pokazuje docelowy motyw: w jasnym widać księżyc, w ciemnym słońce. */
.theme-toggle .th-to-light { display: none; }
:root[data-theme="dark"] .theme-toggle .th-to-dark { display: none; }
:root[data-theme="dark"] .theme-toggle .th-to-light { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .th-to-dark { display: none; }
  :root:not([data-theme="light"]) .theme-toggle .th-to-light { display: block; }
}

.nav-toggle { display: none; }
.nav-toggle .ic-close { display: none; }
.nav-toggle[aria-expanded="true"] .ic-menu { display: none; }
.nav-toggle[aria-expanded="true"] .ic-close { display: block; }

/* --------------------------------------------------------------------------
   7. Przyciski i odnośniki
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .6rem;
  padding: .78rem 1.35rem;
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  font-family: var(--sans);
  font-size: .95rem;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -.005em;
  cursor: pointer;
  text-align: center;
  transition: transform .16s ease, box-shadow .16s ease, background-color .16s ease,
              border-color .16s ease, color .16s ease;
}
.btn .ic { width: 1.05em; height: 1.05em; }
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: linear-gradient(180deg, var(--brand-2) 0%, var(--brand) 100%);
  color: #fff;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .22),
              0 1px 2px rgba(11, 22, 34, .18),
              0 10px 24px -12px color-mix(in srgb, var(--brand) 85%, transparent);
}
.btn-primary:hover {
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .28),
              0 1px 2px rgba(11, 22, 34, .2),
              0 16px 32px -14px color-mix(in srgb, var(--brand) 92%, transparent);
}

.btn-ghost {
  background: var(--card);
  color: var(--ink);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-xs);
}
.btn-ghost:hover { border-color: var(--ink); background: var(--card-2); }

.btn-on-deep {
  background: rgba(255, 255, 255, .07);
  color: #fff;
  border-color: rgba(255, 255, 255, .24);
}
.btn-on-deep:hover { background: rgba(255, 255, 255, .14); border-color: rgba(255, 255, 255, .45); }

.btn-sm { padding: .5rem .9rem; font-size: .86rem; border-radius: var(--r-xs); }
.btn-lg { padding: .95rem 1.7rem; font-size: 1rem; }
.btn-block { width: 100%; }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  color: var(--brand);
  font-weight: 600;
}
.link-arrow .ic { transition: transform .18s ease; }
.link-arrow:hover { color: var(--brand-2); }
.link-arrow:hover .ic { transform: translateX(3px); }

/* --------------------------------------------------------------------------
   8. Sekcje
   -------------------------------------------------------------------------- */
.section { padding: clamp(3.4rem, 2rem + 4.4vw, 6.4rem) 0; }
.section-tight { padding: clamp(2.4rem, 1.6rem + 2.6vw, 3.8rem) 0; }
.section-alt { background: var(--bg-tint); border-block: 1px solid var(--line-soft); }
.section-soft { background: var(--bg-soft); border-block: 1px solid var(--line-soft); }

.section-head { max-width: 46rem; margin-bottom: clamp(2rem, 1.2rem + 2.4vw, 3.2rem); }
.section-head.is-center { margin-inline: auto; text-align: center; }
.section-head.is-center .eyebrow::before { display: none; }
.section-head h2 { margin: .7rem 0 .8rem; }

/* Nagłówek bloku wewnątrz sekcji dwukolumnowej (bez .section-head). */
.block-head h2 { margin: .7rem 0 1rem; }

/* Odstępy między blokami sekcji. W clamp() spacje wokół „+” są wymagane —
   bez nich cała deklaracja jest nieprawidłowa i przeglądarka ją pomija. */
.mt-block { margin-top: clamp(2.4rem, 1.6rem + 2vw, 3.6rem); }
.mb-block { margin-bottom: clamp(2.4rem, 1.6rem + 2vw, 3.4rem); }
.my-md    { margin-block: 1.4rem; }

.stack > * + *   { margin-top: 1.1rem; }
.stack-sm > * + * { margin-top: .6rem; }
.stack-lg > * + * { margin-top: 1.9rem; }

.split {
  display: grid;
  gap: clamp(2rem, 1rem + 4vw, 4.2rem);
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: center;
}
.split-wide { grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr); }
.split.is-top { align-items: start; }

.grid { display: grid; gap: clamp(1rem, .6rem + 1.4vw, 1.6rem); }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* --------------------------------------------------------------------------
   9. Hero
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  overflow: hidden;
  background: var(--deep);
  color: var(--deep-text);
  padding: clamp(3rem, 1.8rem + 4.6vw, 5.6rem) 0 clamp(3.4rem, 2rem + 5vw, 6rem);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, .028) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, .028) 1px, transparent 1px);
  background-size: 68px 68px;
  mask-image: radial-gradient(120% 90% at 50% 0%, #000 22%, transparent 78%);
  -webkit-mask-image: radial-gradient(120% 90% at 50% 0%, #000 22%, transparent 78%);
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  inset: -40% -10% auto -10%;
  height: 120%;
  background:
    radial-gradient(42% 52% at 72% 18%, rgba(56, 168, 238, .30) 0%, transparent 68%),
    radial-gradient(38% 46% at 16% 8%, rgba(69, 211, 160, .13) 0%, transparent 70%);
  pointer-events: none;
}
.hero > .container { position: relative; z-index: 1; }

.hero-grid {
  display: grid;
  gap: clamp(2.6rem, 1.4rem + 4.4vw, 4.6rem);
  grid-template-columns: minmax(0, 1.04fr) minmax(0, .96fr);
  align-items: center;
}

.hero-copy { min-width: 0; }
.hero h1 { color: #fff; margin: 1.05rem 0 1.15rem; }
.hero .eyebrow { color: var(--brand-bright); }
.hero-lead { color: var(--deep-text); max-width: 34rem; }
.hero-lead + .hero-lead { margin-top: .9rem; }
.hero-lead strong { color: #fff; }

.hero-chips {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-top: 1.7rem;
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: .48rem;
  padding: .4rem .78rem;
  border-radius: var(--r-full);
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .13);
  font-family: var(--mono);
  font-size: .745rem;
  font-weight: 500;
  letter-spacing: .01em;
  color: var(--deep-ink);
}
.chip .ic { width: 14px; height: 14px; color: var(--brand-bright); }
.chip.is-signal .ic { color: #45d3a0; }

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin-top: 1.9rem;
}

.hero-note {
  margin-top: 1.5rem;
  max-width: 34rem;
  display: flex;
  gap: .65rem;
  font-size: .855rem;
  line-height: 1.6;
  color: var(--deep-muted);
}
.hero-note .ic { width: 16px; height: 16px; margin-top: .22rem; flex: none; color: var(--deep-muted); }

/* --- Kompozycja hero: zrzut programu w oprawie z odczytem stanu ----------- */
.hero-art {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 420px;
}
.hero-art-bg {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  pointer-events: none;
}
/* Rysunek tła jest szerszy niż kolumna — pierścienie mają wychodzić poza nią
   i zostać przycięte krawędzią hero (.hero ma overflow: hidden). */
.hero-art-bg svg {
  width: min(660px, 132%);
  max-width: none;
  height: auto;
}

.device {
  position: relative;
  z-index: 1;
  margin: 0;
  padding: 14px;
  border-radius: var(--r-lg);
  background: linear-gradient(165deg, rgba(255, 255, 255, .11), rgba(255, 255, 255, .03) 46%, rgba(0, 0, 0, .22));
  border: 1px solid rgba(255, 255, 255, .15);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, .22),
    0 30px 70px -26px rgba(0, 0, 0, .9),
    0 6px 18px -8px rgba(0, 0, 0, .6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.device img {
  border-radius: var(--r-md);
  box-shadow: 0 10px 26px -12px rgba(0, 0, 0, .8);
}

/* Odczyt stanu pod zrzutem — wartości z opisywanej konfiguracji. */
.device-strip {
  margin-top: .85rem;
  padding-top: .8rem;
  border-top: 1px dashed rgba(255, 255, 255, .16);
  display: grid;
  gap: .42rem;
}
.device-strip li {
  display: flex;
  align-items: center;
  gap: .45rem;
  font-family: var(--mono);
  font-size: .695rem;
  line-height: 1.3;
  color: var(--deep-ink);
}
.device-strip .dot {
  width: 6px; height: 6px;
  flex: none;
  border-radius: 50%;
  background: var(--brand-bright);
  box-shadow: 0 0 0 3px rgba(56, 168, 238, .16);
}
.device-strip .dot.is-signal {
  background: #45d3a0;
  box-shadow: 0 0 0 3px rgba(69, 211, 160, .16);
}
.device-strip .v { white-space: nowrap; }
.device-strip .k {
  margin-left: auto;
  color: var(--deep-muted);
  letter-spacing: .12em;
  text-transform: uppercase;
  font-size: .62rem;
}

.device-cap {
  margin-top: .85rem;
  font-family: var(--mono);
  font-size: .665rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--deep-muted);
  text-align: center;
}

/* --------------------------------------------------------------------------
   10. Pasek faktów
   -------------------------------------------------------------------------- */
.facts {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.fact { background: var(--card); padding: 1.15rem 1.25rem; }
.fact dt {
  font-family: var(--mono);
  font-size: .665rem;
  font-weight: 500;
  letter-spacing: .13em;
  text-transform: uppercase;
  color: var(--muted);
}
.fact dd {
  margin-top: .34rem;
  font-family: var(--display);
  font-size: 1.16rem;
  font-weight: 600;
  letter-spacing: -.02em;
  color: var(--ink);
}

/* --------------------------------------------------------------------------
   11. Karty
   -------------------------------------------------------------------------- */
.card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: clamp(1.3rem, 1rem + .9vw, 1.7rem);
  box-shadow: var(--shadow-sm);
}
.card h3 { margin-bottom: .5rem; }
.card p { font-size: .955rem; }
.card-hi {
  border-color: var(--brand-line);
  background: linear-gradient(180deg, var(--brand-soft) 0%, var(--card) 62%);
}

.icon-box {
  width: 42px; height: 42px;
  display: grid; place-items: center;
  margin-bottom: 1.05rem;
  border-radius: var(--r-sm);
  background: var(--brand-soft);
  border: 1px solid var(--brand-line);
  color: var(--brand);
}
.icon-box .ic { width: 21px; height: 21px; }
.icon-box.is-signal { background: var(--signal-soft); border-color: var(--signal-line); color: var(--signal); }
.icon-box.is-alert  { background: var(--alert-soft);  border-color: var(--alert-line);  color: var(--alert); }
.icon-box.is-amber  { background: var(--amber-soft);  border-color: var(--amber-line);  color: var(--amber); }

/* --- Lista z ptaszkiem ---------------------------------------------------- */
.checks { display: grid; gap: .6rem; }
.checks li {
  position: relative;
  padding-left: 1.85rem;
  font-size: .96rem;
}
.checks li::before {
  content: "";
  position: absolute;
  left: 0; top: .34em;
  width: 1.15rem; height: 1.15rem;
  border-radius: 50%;
  background: var(--signal-soft);
  border: 1px solid var(--signal-line);
}
.checks li::after {
  content: "";
  position: absolute;
  left: .34rem; top: .62em;
  width: .44rem; height: .24rem;
  border-left: 1.7px solid var(--signal);
  border-bottom: 1.7px solid var(--signal);
  transform: rotate(-45deg);
}

/* --- Uwaga / komunikat ---------------------------------------------------- */
.notice {
  display: flex;
  gap: .85rem;
  padding: 1rem 1.15rem;
  border-radius: var(--r-sm);
  border: 1px solid var(--brand-line);
  background: var(--brand-soft);
  color: var(--ink);
  font-size: .925rem;
  line-height: 1.6;
}
.notice .ic { width: 18px; height: 18px; flex: none; margin-top: .22rem; color: var(--brand); }
.notice p { margin: 0; }
.notice p + p { margin-top: .5rem; }
.notice strong { color: var(--ink); }

.notice-amber { border-color: var(--amber-line); background: var(--amber-soft); }
.notice-amber .ic { color: var(--amber); }
.notice-signal { border-color: var(--signal-line); background: var(--signal-soft); }
.notice-signal .ic { color: var(--signal); }
.notice-plain { border-color: var(--line); background: var(--card-2); }
.notice-plain .ic { color: var(--muted); }

/* --- Etykieta ------------------------------------------------------------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .22rem .55rem;
  border-radius: var(--r-xs);
  font-family: var(--mono);
  font-size: .685rem;
  font-weight: 500;
  letter-spacing: .04em;
  background: var(--brand-soft);
  border: 1px solid var(--brand-line);
  color: var(--brand);
}
.tag.is-signal { background: var(--signal-soft); border-color: var(--signal-line); color: var(--signal); }
.tag.is-amber  { background: var(--amber-soft);  border-color: var(--amber-line);  color: var(--amber); }

/* --------------------------------------------------------------------------
   12. Karta pobierania
   -------------------------------------------------------------------------- */
.download {
  position: relative;
  overflow: hidden;
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: var(--card);
  box-shadow: var(--shadow-md);
}
.download-top {
  position: relative;
  padding: 1.5rem 1.6rem 1.35rem;
  background: var(--deep);
  color: var(--deep-text);
  overflow: hidden;
}
.download-top::after {
  content: "";
  position: absolute;
  inset: -60% -20% auto auto;
  width: 320px; height: 320px;
  background: radial-gradient(circle, rgba(56, 168, 238, .28) 0%, transparent 66%);
  pointer-events: none;
}
.download-top > * { position: relative; }
.download-file {
  display: flex;
  align-items: center;
  gap: .85rem;
}
.download-file .ic-lg { color: var(--brand-bright); }
.download-name {
  font-family: var(--mono);
  font-size: .88rem;
  font-weight: 500;
  color: #fff;
  word-break: break-all;
}
.download-meta {
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--deep-muted);
  margin-top: .2rem;
}
.download-art { margin-top: 1.25rem; }
.download-art svg { width: 100%; height: auto; }
.download-body { padding: 1.5rem 1.6rem 1.6rem; }
.download-body .btn { margin-bottom: 1rem; }
.download-fine {
  font-size: .85rem;
  line-height: 1.6;
  color: var(--muted);
}

/* --------------------------------------------------------------------------
   13. Instrukcja krok po kroku
   -------------------------------------------------------------------------- */
.guide {
  display: grid;
  grid-template-columns: 224px minmax(0, 1fr);
  gap: clamp(2rem, 1rem + 3vw, 3.6rem);
  align-items: start;
}

.guide-rail {
  position: sticky;
  top: calc(var(--header-h) + 1.5rem);
}
.guide-rail-title {
  font-family: var(--mono);
  font-size: .665rem;
  font-weight: 500;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1rem;
}
.guide-steps { position: relative; display: grid; gap: .1rem; }
.guide-steps::before {
  content: "";
  position: absolute;
  left: 11px; top: 14px; bottom: 14px;
  width: 1px;
  background: var(--line);
}
.guide-steps a {
  position: relative;
  display: grid;
  grid-template-columns: 23px minmax(0, 1fr);
  gap: .7rem;
  align-items: start;
  padding: .32rem .45rem .32rem 0;
  font-size: .855rem;
  line-height: 1.4;
  color: var(--muted);
  transition: color .16s ease;
}
.guide-steps a .n {
  position: relative;
  z-index: 1;
  width: 23px; height: 23px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: var(--bg-tint);
  border: 1px solid var(--line);
  font-family: var(--mono);
  font-size: .655rem;
  font-weight: 700;
  color: var(--muted);
  transition: all .18s ease;
}
.guide-steps a:hover { color: var(--ink); }
.guide-steps a:hover .n { border-color: var(--line-strong); color: var(--ink); }
.guide-steps a[aria-current] { color: var(--ink); font-weight: 600; }
.guide-steps a[aria-current] .n {
  background: var(--brand);
  border-color: var(--brand);
  color: #fff;
  box-shadow: 0 0 0 4px var(--brand-soft);
}

.guide-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(2.2rem, 1.4rem + 2.4vw, 3.4rem);
}

/* Nagłówek uwzględnia scroll-padding-top na <html>. Na wąskich ekranach
   dodajemy niżej miejsce na przyklejony pasek kroków. */
.step { scroll-margin-top: 0; }
.step-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1rem;
  align-items: center;
  margin-bottom: 1rem;
}
.step-n {
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border-radius: var(--r-sm);
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-xs);
  font-family: var(--mono);
  font-size: .95rem;
  font-weight: 700;
  color: var(--brand);
}
.step-head h3 { margin: 0; }
.step-body { display: grid; grid-template-columns: minmax(0, 1fr); gap: 1.1rem; }
.step-body p { max-width: 46rem; }

/* --- Zrzut ekranu w oprawie ---------------------------------------------- */
/* Wszystkie dziewięć zrzutów ma nieprzezroczyste białe obrzeże. Gdyby płyta
   była ciemna, w motywie ciemnym każdy obraz obwiódłby się twardym białym
   prostokątem. Dlatego płyta jest BIAŁA w obu motywach, a obraz leży na niej
   bez własnej ramki — biel obrzeża zlewa się z bielą płyty i czyta się jak
   margines. Napisy na płycie używają stałych tokenów --plate-*. */
.shot { margin: 0; }

.shot-scroll {
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.shot-plate {
  position: relative;
  display: inline-block;
  padding: 2.1rem clamp(1rem, .7rem + 1vw, 1.5rem) clamp(1rem, .7rem + 1vw, 1.5rem);
  border: 1px solid var(--plate-line);
  border-radius: var(--r-xs);
  background: var(--plate);
  box-shadow: var(--shadow-sm);
}

/* Zrzut nigdy nie jest skalowany — ani w górę, ani w dół. Gdy nie mieści się
   w kolumnie, czytelnik przesuwa go w poziomie. Zmniejszony do 75% interfejs
   z 2007 r. przestaje być czytelny, a o to w instrukcji chodzi najbardziej. */
.shot-plate img {
  max-width: none;
  border-radius: 0;
}

/* Realne wymiary pliku: tłumaczą, dlaczego obraz nie jest większy, i zamieniają
   mały zrzut w okaz pokazany celowo w skali 1:1. */
.shot-dim {
  position: absolute;
  top: .62rem;
  left: clamp(1rem, .7rem + 1vw, 1.5rem);
  font-family: var(--mono);
  font-size: .66rem;
  letter-spacing: .08em;
  color: var(--plate-muted);
}

.shot-cap {
  margin-top: .8rem;
  font-family: var(--mono);
  font-size: .72rem;
  line-height: 1.55;
  color: var(--muted);
  max-width: 34rem;
}
.shot-cap .n { color: var(--brand); font-weight: 700; }

/* Odnośnik do pliku pokazujemy tylko tam, gdzie płyta faktycznie się nie mieści
   i zaczyna przewijać — przeglądarka ma wtedy własne powiększanie. Działa bez
   jednej linijki JavaScriptu. */
.shot-full {
  display: none;
  align-items: center;
  gap: .4rem;
  margin-top: .5rem;
  font-family: var(--mono);
  font-size: .7rem;
  color: var(--brand);
}
.shot-full .ic { width: 13px; height: 13px; }

/* --------------------------------------------------------------------------
   14. Tabela parametrów
   -------------------------------------------------------------------------- */
.table-wrap {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--card);
  box-shadow: var(--shadow-sm);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
table.data { font-size: .93rem; min-width: 520px; }
table.data th, table.data td {
  padding: .78rem 1.05rem;
  text-align: left;
  border-bottom: 1px solid var(--line-soft);
  vertical-align: top;
}
table.data thead th {
  background: var(--card-2);
  border-bottom-color: var(--line);
  font-family: var(--mono);
  font-size: .665rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
}
table.data tbody tr:last-child th,
table.data tbody tr:last-child td { border-bottom: 0; }
table.data tbody tr:hover td,
table.data tbody tr:hover th { background: var(--bg-tint); }
table.data tbody th {
  font-family: var(--mono);
  font-size: .82rem;
  font-weight: 500;
  color: var(--ink);
  width: 46%;
}
table.data td .val {
  font-family: var(--mono);
  font-size: .845rem;
  font-weight: 500;
  color: var(--ink);
}
table.data td .val.is-signal { color: var(--signal); font-weight: 700; }
table.data td .hint { display: block; margin-top: .25rem; font-size: .83rem; color: var(--muted); }

.copy {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  margin-left: .45rem;
  padding: .12rem .4rem;
  border: 1px solid var(--line);
  border-radius: var(--r-xs);
  background: var(--card-2);
  color: var(--muted);
  font-family: var(--mono);
  font-size: .64rem;
  letter-spacing: .05em;
  text-transform: uppercase;
  cursor: pointer;
  vertical-align: middle;
  transition: color .15s ease, border-color .15s ease, background-color .15s ease;
}
.copy .ic { width: 12px; height: 12px; }
.copy .copy-t { letter-spacing: inherit; }
.copy:hover { color: var(--brand); border-color: var(--brand-line); background: var(--brand-soft); }
.copy.is-done { color: var(--signal); border-color: var(--signal-line); background: var(--signal-soft); }

.table-note { margin-top: .85rem; font-size: .86rem; color: var(--muted); }

/* --------------------------------------------------------------------------
   15. Pytania
   -------------------------------------------------------------------------- */
.acc-wrap { max-width: 900px; margin-inline: auto; }
.acc { display: grid; gap: .65rem; }
.acc details {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--card);
  box-shadow: var(--shadow-xs);
  overflow: hidden;
  transition: border-color .18s ease, box-shadow .18s ease;
}
.acc details[open] { border-color: var(--brand-line); box-shadow: var(--shadow-sm); }
.acc summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: .9rem;
  align-items: center;
  padding: 1rem 1.15rem;
  cursor: pointer;
  list-style: none;
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.03rem;
  letter-spacing: -.015em;
  color: var(--ink);
}
.acc summary .q {
  font-family: var(--mono);
  font-size: .68rem;
  font-weight: 700;
  color: var(--brand);
  letter-spacing: .05em;
}
.acc summary .chev { color: var(--muted); transition: transform .2s ease, color .2s ease; }
.acc details[open] summary .chev { transform: rotate(180deg); color: var(--brand); }
.acc .acc-body { padding: 0 1.15rem 1.2rem 3.05rem; font-size: .955rem; }
.acc .acc-body > * + * { margin-top: .7rem; }

/* --------------------------------------------------------------------------
   16. Pasek wezwania
   -------------------------------------------------------------------------- */
.cta-band {
  position: relative;
  overflow: hidden;
  border-radius: var(--r-xl);
  background: var(--deep);
  color: var(--deep-text);
  padding: clamp(2.2rem, 1.4rem + 3vw, 3.6rem);
  box-shadow: var(--shadow-lg);
}
.cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(56% 120% at 88% 8%, rgba(56, 168, 238, .3) 0%, transparent 62%),
    radial-gradient(44% 100% at 6% 96%, rgba(69, 211, 160, .14) 0%, transparent 66%);
  pointer-events: none;
}
.cta-band > * { position: relative; }
.cta-band h2 { color: #fff; margin: .8rem 0; }
.cta-band .eyebrow { color: var(--brand-bright); }
.cta-band p { color: var(--deep-text); max-width: 42rem; }
.cta-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 2rem;
  align-items: center;
}
.cta-actions { display: flex; flex-wrap: wrap; gap: .7rem; }

/* --------------------------------------------------------------------------
   17. Stopka
   -------------------------------------------------------------------------- */
.footer {
  background: var(--deep);
  color: var(--deep-muted);
  padding: clamp(2.6rem, 1.8rem + 2.4vw, 3.8rem) 0 1.8rem;
  font-size: .92rem;
}
.footer a { color: var(--deep-text); }
.footer a:hover { color: #fff; }
.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) repeat(2, minmax(0, 1fr));
  gap: 2.4rem;
}
.footer .brand-name { color: #fff; }
.footer .brand-sub { color: var(--deep-muted); }
.footer-about {
  margin-top: 1.1rem;
  max-width: 34rem;
  color: var(--deep-muted);
  line-height: 1.65;
}
.footer h2 {
  font-family: var(--mono);
  font-size: .665rem;
  font-weight: 700;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: .9rem;
}
.footer ul { display: grid; gap: .55rem; }
.footer-bottom {
  margin-top: 2.4rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--deep-line);
  display: flex;
  flex-wrap: wrap;
  gap: .8rem;
  justify-content: space-between;
  font-size: .84rem;
  color: var(--deep-muted);
}

.to-top {
  position: fixed;
  right: 1.1rem; bottom: 1.1rem;
  z-index: 90;
  width: 42px; height: 42px;
  display: grid; place-items: center;
  border-radius: var(--r-sm);
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-md);
  color: var(--ink);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity .22s ease, transform .22s ease, visibility .22s;
}
.to-top.is-on { opacity: 1; visibility: visible; transform: none; }
.to-top .ic { width: 18px; height: 18px; }

/* --------------------------------------------------------------------------
   18. Rysunki (autorskie SVG)
   -------------------------------------------------------------------------- */
.fig { margin: 0; }
.fig-art {
  padding: clamp(1rem, .7rem + 1vw, 1.6rem);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--card);
  box-shadow: var(--shadow-sm);
}
.fig-art svg { width: 100%; height: auto; overflow: visible; }
.fig-cap {
  margin-top: .75rem;
  font-family: var(--mono);
  font-size: .715rem;
  line-height: 1.55;
  color: var(--muted);
}
.fig-cap .n { color: var(--brand); font-weight: 700; }

/* Warstwy kolorystyczne rysunków — kolor NIGDY nie jest wpisany na sztywno,
   inaczej rysunek nie zadziała w motywie ciemnym. */
.fl-none      { fill: none; }
.fl-card      { fill: var(--card); }
.fl-soft      { fill: var(--bg-soft); }
.fl-tint      { fill: var(--bg-tint); }
.fl-line      { fill: var(--line); }
.fl-ink       { fill: var(--ink); }
.fl-muted     { fill: var(--muted); }
.fl-brand     { fill: var(--brand); }
.fl-brand-s   { fill: var(--brand-soft); }
.fl-signal    { fill: var(--signal); }
.fl-signal-s  { fill: var(--signal-soft); }
.fl-alert     { fill: var(--alert); }
.fl-alert-s   { fill: var(--alert-soft); }
.fl-amber     { fill: var(--amber); }
.fl-amber-s   { fill: var(--amber-soft); }
.fl-deep      { fill: var(--deep); }

.st-none      { stroke: none; }
.st-line      { stroke: var(--line); }
.st-line-2    { stroke: var(--line-strong); }
.st-ink       { stroke: var(--ink); }
.st-muted     { stroke: var(--muted); }
.st-brand     { stroke: var(--brand); }
.st-signal    { stroke: var(--signal); }
.st-alert     { stroke: var(--alert); }
.st-amber     { stroke: var(--amber); }

/* Rysunki stoją często w kolumnie o połowie szerokości strony, więc napis
   o rozmiarze 12 px schodziłby po przeskalowaniu poniżej 10 px. */
.tx           { font-family: var(--sans); font-size: 13px; fill: var(--text); }
.tx-mono      { font-family: var(--mono); font-size: 12px; letter-spacing: .02em; }
.tx-b         { font-weight: 600; }
.tx-sm        { font-size: 11px; }
.tx-lg        { font-size: 15px; }
.tx-ink       { fill: var(--ink); }
.tx-muted     { fill: var(--muted); }
.tx-brand     { fill: var(--brand); }
.tx-signal    { fill: var(--signal); }
.tx-alert     { fill: var(--alert); }
.tx-amber     { fill: var(--amber); }

/* ruch — wyłączany przy prefers-reduced-motion */
.anim-flow  { stroke-dasharray: 5 7; animation: flow 1.6s linear infinite; }
.anim-pulse { transform-origin: center; animation: ripple 3.4s ease-out infinite; }
.anim-pulse-2 { animation-delay: 1.15s; }
.anim-pulse-3 { animation-delay: 2.3s; }
.anim-blink { animation: blink 2.6s steps(1, end) infinite; }

@keyframes flow   { to { stroke-dashoffset: -24; } }
@keyframes ripple {
  0%   { opacity: .6; transform: scale(.55); }
  75%  { opacity: 0;  transform: scale(1.25); }
  100% { opacity: 0;  transform: scale(1.25); }
}
@keyframes blink  { 0%, 62% { opacity: 1; } 63%, 100% { opacity: .25; } }

/* --------------------------------------------------------------------------
   19. Wejście sekcji
   -------------------------------------------------------------------------- */
.js .reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .55s cubic-bezier(.22, .68, .3, 1), transform .55s cubic-bezier(.22, .68, .3, 1);
}
.js .reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .js .reveal { opacity: 1; transform: none; }
}

/* --------------------------------------------------------------------------
   20. Responsywność
   -------------------------------------------------------------------------- */
@media (max-width: 1180px) {
  .guide { grid-template-columns: 190px minmax(0, 1fr); }
}

@media (max-width: 1040px) {
  .header-tools .btn { display: none; }
  .nav-toggle { display: grid; }

  .nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-md);
    padding: .9rem clamp(1.15rem, .5rem + 2.4vw, 2.6rem) 1.4rem;
    display: none;
    max-height: calc(100dvh - var(--header-h));
    overflow-y: auto;
  }
  .nav.is-open { display: block; }
  .nav-list { flex-direction: column; align-items: stretch; gap: .15rem; }
  .nav-list a { padding: .8rem .9rem; font-size: 1rem; }
  .nav-list .nav-cta { margin-top: .7rem; }
  .nav-list .nav-cta a {
    background: linear-gradient(180deg, var(--brand-2), var(--brand));
    color: #fff;
    text-align: center;
    font-weight: 600;
  }
  .nav-list .nav-cta a:hover { color: #fff; }

  .hero-grid { grid-template-columns: minmax(0, 1fr); }
  .hero-art { min-height: 0; }
  .split, .split-wide { grid-template-columns: minmax(0, 1fr); }
  /* Szerokie ilustracje przewijają się we własnych ramkach. */
  .split > *, .guide > * { min-width: 0; }
  .cta-inner { grid-template-columns: 1fr; gap: 1.6rem; }

  /* Szyna kroków przenosi się nad treść i przewija w poziomie. */
  .guide { grid-template-columns: minmax(0, 1fr); gap: 1.6rem; }
  .step { scroll-margin-top: 3.5rem; }
  .guide-rail {
    position: sticky;
    top: var(--header-h);
    z-index: 60;
    margin-inline: calc(clamp(1.15rem, .5rem + 2.4vw, 2.6rem) * -1);
    padding: .7rem clamp(1.15rem, .5rem + 2.4vw, 2.6rem);
    background: color-mix(in srgb, var(--bg) 92%, transparent);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--line);
  }
  .guide-rail-title { display: none; }
  .guide-steps {
    display: flex;
    gap: .4rem;
    overflow-x: auto;
    scrollbar-width: none;
    padding-bottom: .1rem;
  }
  .guide-steps::-webkit-scrollbar { display: none; }
  .guide-steps::before { display: none; }
  .guide-steps a {
    flex: none;
    grid-template-columns: auto;
    gap: 0;
    padding: 0;
  }
  .guide-steps a .t { display: none; }
  .guide-steps a .n { width: 30px; height: 30px; font-size: .72rem; }
}

@media (max-width: 780px) {
  /* Rysunki mają stałe proporcje — zmniejszone do szerokości telefonu miałyby
     napisy poniżej 9 px. Zamiast tego przewijają się w poziomie, tak jak tabela. */
  .fig-art {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  .fig-art svg { min-width: 520px; }
}

@media (max-width: 860px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid > :first-child { grid-column: 1 / -1; }
}

/* Poniżej tej szerokości najszerszy zrzut (416 px) przestaje mieścić się
   w kolumnie i płyta zaczyna się przewijać — wtedy pokazujemy odnośnik do pliku. */
@media (max-width: 500px) {
  .shot-full { display: inline-flex; }
}

@media (max-width: 620px) {
  body { font-size: 16px; }
  html { scroll-padding-top: 76px; }
  :root { --header-h: 64px; }

  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .brand-sub { display: none; }
  .hero-actions .btn, .cta-actions .btn { width: 100%; }
  .hero-art { min-height: 0; }
  .hero-art-bg { opacity: .55; }

  .acc summary { grid-template-columns: auto minmax(0, 1fr); padding: .9rem 1rem; font-size: .98rem; }
  .acc summary .chev { display: none; }
  .acc .acc-body { padding: 0 1rem 1rem; }

  .step-head { grid-template-columns: 1fr; gap: .7rem; }
  .cta-band { border-radius: var(--r-lg); }
}

/* Pozycja „Pobierz” w rozwijanym menu jest potrzebna tylko na wąskim ekranie —
   szerzej ten sam przycisk stoi w pasku narzędzi nagłówka. */
@media (min-width: 1041px) {
  .nav-list .nav-cta { display: none; }
}

/* --------------------------------------------------------------------------
   21. Druk
   -------------------------------------------------------------------------- */
@media print {
  .header, .footer, .to-top, .progress, .guide-rail, .cta-band,
  .shot-full, .copy, .hero-art-bg { display: none !important; }

  /* Sekcje, przez które czytelnik nie przewinął (np. po skoku z menu), nie
     zdążyły dostać klasy .is-in. Bez tego drukowałyby się jako puste miejsce. */
  .js .reveal { opacity: 1 !important; transform: none !important; }

  body { background: #fff; color: #000; font-size: 10.5pt; }
  .hero { background: #fff; color: #000; padding: 0 0 1rem; }
  .hero h1, .cta-band h2 { color: #000; }
  .hero-lead, .hero-note { color: #333; }
  .section { padding: .8rem 0; }
  .guide { grid-template-columns: 1fr; }
  .card, .fig-art, .table-wrap, .shot-plate, .acc details { box-shadow: none; border-color: #bbb; break-inside: avoid; }
  /* Akordeon rozwija skrypt w zdarzeniu beforeprint — bez JS drukuje się
     tylko to, co czytelnik sam otworzył. */
  a[href^="http"]::after { content: " (" attr(href) ")"; font-size: 8.5pt; color: #555; }
}