/* =========================================================================
   URES - ures.com.pl  |  styles.css  (Faza 2.1: "Wschod energii" - edytorska)
   Rozdzialy 01-05, tasma uslug (scroll-snap), lista-indeks, szyna rozdzialow,
   naglowki nalewajace sie swiatlem. Slonce w scenie = oryginalny path loga.
   Zero-build, vanilla. Ruch wylacznie transform/opacity (+ background-position
   na nalewaniu tytulow - jednorazowe, przy wejsciu w viewport).
   ========================================================================= */

/* ---------- 0. FONTY (self-host - bez requestow do Google; RODO + wydajnosc) ----------
   Pliki: assets/fonts/*.woff2 (latin + latin-ext, wagi 400-700).
   Zrodlo: Google Fonts (Inter - SIL OFL 1.1, Space Grotesk - SIL OFL 1.1). */

/* Inter 400 latin-ext */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('assets/fonts/inter-400-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* Inter 400 latin */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('assets/fonts/inter-400-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* Inter 500 latin-ext */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('assets/fonts/inter-500-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* Inter 500 latin */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('assets/fonts/inter-500-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* Inter 600 latin-ext */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('assets/fonts/inter-600-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* Inter 600 latin */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('assets/fonts/inter-600-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* Inter 700 latin-ext */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('assets/fonts/inter-700-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* Inter 700 latin */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('assets/fonts/inter-700-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* Space Grotesk 400 latin-ext */
@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('assets/fonts/space-grotesk-400-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* Space Grotesk 400 latin */
@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('assets/fonts/space-grotesk-400-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* Space Grotesk 500 latin-ext */
@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('assets/fonts/space-grotesk-500-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* Space Grotesk 500 latin */
@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('assets/fonts/space-grotesk-500-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* Space Grotesk 600 latin-ext */
@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('assets/fonts/space-grotesk-600-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* Space Grotesk 600 latin */
@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('assets/fonts/space-grotesk-600-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* Space Grotesk 700 latin-ext */
@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('assets/fonts/space-grotesk-700-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* Space Grotesk 700 latin */
@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('assets/fonts/space-grotesk-700-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* ---------- 1. TOKENY ---------- */
:root {
  --bg: #F4FAFD;
  --surface: #FFFFFF;
  --surface-2: #EAF3FB;
  --ink: #14233A;
  --muted: #47586E;
  --primary: #1F6FA8;
  --primary-hover: #155789;
  --accent: #72C9F2;
  --ray-warm: #9AD8F5;
  --label: #1A6197;
  --btn-primary-ink: #FFFFFF;
  --border: #D6E4F0;
  --alert: #C0392B;

  --panel: rgba(255, 255, 255, 0.82);
  --panel-strong: rgba(255, 255, 255, 0.92);
  --glow-1: rgba(114, 201, 242, 0.35);
  --glow-2: rgba(114, 201, 242, 0.12);
  --header-bg: rgba(244, 250, 253, 0.72);
  --sky-fallback: linear-gradient(180deg, #DFF0FA 0%, #F4FAFD 100%);

  --display: "Space Grotesk", "Inter", system-ui, sans-serif;
  --sans: "Inter", system-ui, -apple-system, sans-serif;

  --container: 1180px;
  --r-sm: 8px; --r-md: 12px; --r-lg: 16px; --r-xl: 22px; --r-pill: 999px;
  --header-h: 64px;

  --ease-out: cubic-bezier(.16, 1, .3, 1);
  --ease: cubic-bezier(.2, .7, .3, 1);
  --ease-emph: cubic-bezier(.22, 1, .36, 1);
  --t-fast: .18s;
  --t: .24s;
  --t-reveal: .68s;

  --shadow-sm: 0 1px 2px rgba(20, 35, 58, .06), 0 2px 8px rgba(20, 35, 58, .05);
  --shadow-md: 0 4px 14px rgba(20, 35, 58, .08), 0 2px 6px rgba(20, 35, 58, .05);
  --shadow-lg: 0 16px 40px rgba(20, 35, 58, .13);

  color-scheme: light;
}

[data-theme="dark"] {
  --bg: #0B1622;
  --surface: #14202E;
  --surface-2: #1B2A3B;
  --ink: #EAF1F8;
  --muted: #B4C5D8;
  --primary: #4FA6DE;
  --primary-hover: #6FBBE9;
  --accent: #72C9F2;
  --label: #72C9F2;
  --btn-primary-ink: #08131F;
  --border: #25384C;

  --panel: rgba(20, 32, 46, 0.78);
  --panel-strong: rgba(20, 32, 46, 0.92);
  --glow-1: rgba(114, 201, 242, 0.45);
  --glow-2: rgba(114, 201, 242, 0.14);
  --header-bg: rgba(8, 16, 25, 0.64);
  --sky-fallback: linear-gradient(180deg, #050B12 0%, #0B1622 100%);

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, .35), 0 2px 8px rgba(0, 0, 0, .3);
  --shadow-md: 0 4px 14px rgba(0, 0, 0, .4), 0 2px 6px rgba(0, 0, 0, .3);
  --shadow-lg: 0 16px 44px rgba(0, 0, 0, .5);

  color-scheme: dark;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]):not([data-theme="dark"]) {
    --bg: #0B1622; --surface: #14202E; --surface-2: #1B2A3B;
    --ink: #EAF1F8; --muted: #B4C5D8;
    --primary: #4FA6DE; --primary-hover: #6FBBE9; --accent: #72C9F2;
    --label: #72C9F2;
    --btn-primary-ink: #08131F;
    --border: #25384C;
    --panel: rgba(20, 32, 46, 0.78);
    --panel-strong: rgba(20, 32, 46, 0.92);
    --glow-1: rgba(114, 201, 242, 0.45);
    --glow-2: rgba(114, 201, 242, 0.14);
    --header-bg: rgba(8, 16, 25, 0.64);
    --sky-fallback: linear-gradient(180deg, #050B12 0%, #0B1622 100%);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, .35), 0 2px 8px rgba(0, 0, 0, .3);
    --shadow-md: 0 4px 14px rgba(0, 0, 0, .4), 0 2px 6px rgba(0, 0, 0, .3);
    --shadow-lg: 0 16px 44px rgba(0, 0, 0, .5);
    color-scheme: dark;
  }
}

/* ---------- 2. RESET / BAZA ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--bg);
  background-image: var(--sky-fallback);
  background-attachment: fixed;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
::selection { background: color-mix(in srgb, var(--accent) 40%, transparent); color: var(--ink); }
@supports (scrollbar-color: auto) {
  html { scrollbar-color: color-mix(in srgb, var(--accent) 45%, var(--border)) transparent; scrollbar-width: thin; }
}
img, svg { display: block; max-width: 100%; }
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-hover); }
h1, h2, h3 { font-family: var(--display); line-height: 1.12; letter-spacing: -0.015em; margin: 0 0 .5em; }
p { margin: 0 0 1em; }
ul, ol { margin: 0; padding: 0; list-style: none; }
.ico { width: 1.25em; height: 1.25em; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; flex: none; }
.container { width: min(100% - 40px, var(--container)); margin-inline: auto; }

:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px;
  box-shadow: 0 0 0 5px rgba(20, 35, 58, .28);
}

.skip-link {
  position: fixed; top: -48px; left: 12px; z-index: 300;
  padding: 10px 16px; background: var(--surface); color: var(--ink);
  border: 1px solid var(--border); border-radius: var(--r-sm);
  transition: top var(--t-fast) var(--ease);
}
.skip-link:focus-visible { top: 12px; }

/* bez JS (brak html.motion) tresc jest w pelni widoczna */
html:not(.motion) .reveal { opacity: 1; transform: none; }

/* kotwice nie chowaja sie pod sticky headerem
   (jedna wlasciwosc - scroll-padding i scroll-margin by sie SUMOWALY) */
html { scroll-padding-top: calc(var(--header-h) + 14px); }

/* ---------- 3. SCENA TLA ---------- */
.site-bg { position: fixed; inset: 0; z-index: -1; pointer-events: none; }
#scene-canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.sb-grain {
  position: absolute; inset: 0; opacity: .05; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='0.6'/%3E%3C/svg%3E");
}
.sb-veil {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 0%, transparent 45%, color-mix(in srgb, var(--bg) 38%, transparent) 100%);
}

/* ---------- 4. PRELOADER: promienie -> ORYGINALNY lockup ---------- */
.preloader { display: none; }
html.intro .preloader {
  display: grid; place-items: center;
  position: fixed; inset: 0; z-index: 200;
  background: #050B12;
  animation: pre-hide .5s var(--ease) 1.7s forwards;
}
.pre-stage {
  --presun: min(220px, 52vw);
  position: relative;
  width: var(--presun);
  /* pod sloncem rezerwujemy miejsce na wordmark pelnego loga (proporcje viewBoxow) */
  margin-bottom: calc(var(--presun) * 0.82);
}
.pre-sun { width: 100%; overflow: visible; display: block; }
.pre-sun path {
  fill: #72C9F2; fill-opacity: 0;
  stroke: #72C9F2; stroke-width: 1.1;
  stroke-dasharray: 1; stroke-dashoffset: 1;
  animation: pre-draw .8s var(--ease-emph) .05s forwards,
             pre-fill .4s var(--ease) .7s forwards,
             pre-fade .35s var(--ease) 1.05s forwards;
  filter: drop-shadow(0 0 18px rgba(114, 201, 242, .45));
}
/* pelne logo naklada sie DOKLADNIE na narysowane slonce:
   szerokosc = 283.5/173 x sunW, offset X = -56/173 x sunW, gorna krawedz wspolna */
.pre-logo {
  position: absolute; top: 0;
  left: calc(var(--presun) * -0.3237);
  width: calc(var(--presun) * 1.6387);
  max-width: none;
  opacity: 0; transform: scale(.985);
  animation: pre-logo-in .5s var(--ease-out) 1.02s forwards;
}
@keyframes pre-draw { to { stroke-dashoffset: 0; } }
@keyframes pre-fill { to { fill-opacity: 1; } }
@keyframes pre-fade { to { fill-opacity: 0; stroke-opacity: 0; } }
@keyframes pre-logo-in { to { opacity: 1; transform: none; } }
@keyframes pre-hide { to { opacity: 0; visibility: hidden; pointer-events: none; } }

/* ---------- 5. HEADER ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: var(--header-bg);
  border-bottom: 1px solid color-mix(in srgb, var(--border) 60%, transparent);
}
@media (min-width: 769px) {
  .site-header { backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); }
}
.header-inner { display: flex; align-items: center; gap: 20px; min-height: var(--header-h); }
.brand { display: inline-flex; align-items: center; }
.brand-logo { height: 44px; width: auto; }
.brand-logo--dark { display: none; }
[data-theme="dark"] .brand-logo--light { display: none; }
[data-theme="dark"] .brand-logo--dark { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]):not([data-theme="dark"]) .brand-logo--light { display: none; }
  :root:not([data-theme="light"]):not([data-theme="dark"]) .brand-logo--dark { display: block; }
}

.main-nav { display: flex; gap: 24px; margin-left: auto; }
.main-nav a {
  position: relative; color: var(--ink); font-weight: 500; font-size: 14.5px;
  padding: 10px 2px; display: inline-flex; align-items: baseline; gap: 6px;
}
.main-nav a i, .mobile-nav a i {
  font-style: normal; font-family: var(--display); font-weight: 600;
  font-size: 10px; letter-spacing: .1em; color: var(--label);
}
.main-nav a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 4px; height: 2px;
  background: var(--label); border-radius: 2px;
  transform: scaleX(0); transform-origin: left;
  transition: transform var(--t) var(--ease-out);
}
.main-nav a:hover::after, .main-nav a:focus-visible::after { transform: scaleX(1); }

.header-actions { display: flex; align-items: center; gap: 10px; margin-left: auto; }
.main-nav + .header-actions { margin-left: 0; }

.lang-toggle, .theme-toggle {
  display: inline-flex; align-items: center; justify-content: center; gap: 2px;
  min-width: 44px; min-height: 44px; padding: 0 10px;
  background: transparent; border: 1px solid var(--border); border-radius: var(--r-pill);
  color: var(--ink); font: 600 13px/1 var(--sans); cursor: pointer;
  transition: border-color var(--t-fast) var(--ease);
}
.lang-toggle:hover, .theme-toggle:hover { border-color: var(--accent); }
.lang-code { opacity: .45; }
.lang-code.active { opacity: 1; color: var(--primary); }
.lang-sep { opacity: .35; margin: 0 2px; }

.theme-toggle .ico { width: 18px; height: 18px; display: none; }
.theme-toggle[data-mode="auto"] .ico-auto { display: block; }
.theme-toggle[data-mode="light"] .ico-sun { display: block; }
.theme-toggle[data-mode="dark"] .ico-moon { display: block; }
.theme-toggle:not([data-mode]) .ico-moon { display: block; }

.nav-toggle {
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 44px; height: 44px; padding: 10px;
  background: transparent; border: 1px solid var(--border); border-radius: var(--r-sm);
  cursor: pointer;
}
.nav-toggle span { display: block; height: 2px; background: var(--ink); border-radius: 2px; transition: transform var(--t) var(--ease), opacity var(--t) var(--ease); }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav {
  display: none; flex-direction: column; gap: 4px; padding: 12px 20px 20px;
  background: var(--panel-strong); border-bottom: 1px solid var(--border);
}
.mobile-nav.open { display: flex; }
.mobile-nav a { padding: 12px 6px; font-weight: 500; color: var(--ink); border-radius: var(--r-sm); }
.mobile-nav .btn { justify-content: center; margin-top: 8px; }

.scroll-progress { position: absolute; left: 0; right: 0; bottom: -2px; height: 2px; }
.sp-fill {
  position: absolute; inset: 0;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0); transform-origin: left;
  box-shadow: 0 0 10px var(--glow-1);
}
.sp-sun {
  position: absolute; top: 50%; left: 0; width: 22px; height: 12px;
  fill: var(--accent); filter: drop-shadow(0 0 6px var(--glow-1));
  transform: translate(-11px, -9px);
}

/* ---------- 6. SZYNA ROZDZIALOW ---------- */
.chapter-rail {
  position: fixed; left: 18px; top: 50%; transform: translateY(-50%);
  z-index: 90; display: none; gap: 16px; grid-auto-flow: row;
}
@media (min-width: 1240px) { .chapter-rail { display: grid; } }
.chapter-rail a {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--muted); opacity: .55;
  font: 600 10.5px/1 var(--display); letter-spacing: .12em;
  transition: opacity var(--t) var(--ease), color var(--t) var(--ease);
}
.chapter-rail a::before {
  content: ""; width: 16px; height: 1px; background: currentColor; flex: none;
  transition: width var(--t) var(--ease-out);
}
.chapter-rail .cr-label {
  text-transform: uppercase; opacity: 0; transform: translateX(-6px);
  transition: opacity var(--t) var(--ease), transform var(--t) var(--ease-out);
}
.chapter-rail a:hover, .chapter-rail a.active { color: var(--label); opacity: 1; }
.chapter-rail a.active::before { width: 30px; }
.chapter-rail a:hover .cr-label, .chapter-rail a.active .cr-label, .chapter-rail a:focus-visible .cr-label { opacity: 1; transform: none; }

/* ---------- 7. PRZYCISKI ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 44px; padding: 12px 22px;
  border-radius: var(--r-pill); border: 1px solid transparent;
  font: 600 15px/1.2 var(--sans); cursor: pointer;
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease),
              border-color var(--t-fast) var(--ease), box-shadow var(--t) var(--ease);
}
.btn-lg { min-height: 52px; padding: 14px 28px; font-size: 16px; }
.btn-primary {
  background: var(--primary); color: var(--btn-primary-ink);
  box-shadow: 0 0 0 0 var(--glow-1);
}
.btn-primary:hover { background: var(--primary-hover); color: var(--btn-primary-ink); box-shadow: 0 6px 24px var(--glow-1); }
.btn-ghost {
  border-color: var(--border); color: var(--ink);
  background: rgba(128, 160, 180, 0.16);
  background: color-mix(in srgb, var(--surface) 40%, transparent);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--ink); }
html.motion .hero-cta .btn-primary { animation: cta-pulse 4.5s var(--ease) 2s 3; }
@keyframes cta-pulse {
  0%, 100% { box-shadow: 0 0 0 0 var(--glow-1); }
  50% { box-shadow: 0 0 26px 2px var(--glow-1); }
}

/* ---------- 8. TYPOGRAFIA POMOCNICZA ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font: 600 13px/1 var(--sans); letter-spacing: .14em; text-transform: uppercase;
  color: var(--label); margin-bottom: 18px;
}
.eyebrow-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--label); box-shadow: 0 0 12px var(--glow-1); }
.kicker {
  display: flex; align-items: center; gap: 10px;
  font: 600 12.5px/1 var(--sans); letter-spacing: .16em; text-transform: uppercase;
  color: var(--label); margin: 0 0 12px;
}
.kicker::before {
  content: ""; width: 18px; height: 10px; flex: none;
  background: var(--label);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='56 0 173 92'%3E%3Cpath d='M224.7,83.9c-18.3-3.1-37.6-5-50-6c-0.2-1.1-0.2-1-0.4-2c8.7-4.6,19.8-10.7,30.2-17.2c0.2-0.1,0.1-0.4-0.2-0.4c-11.9,2.7-24.1,6.2-33.5,9.1c-0.6-0.9-0.6-0.9-1.2-1.8c8.3-9.7,20.9-25.1,31.8-40.6c0.1-0.2-0.1-0.4-0.3-0.3c-15.5,10.9-30.9,23.5-40.6,31.8c-0.9-0.6-0.8-0.5-1.7-1.1c2.9-9.4,6.5-21.6,9.2-33.5c0.1-0.2-0.3-0.4-0.4-0.2c-6.6,10.3-12.7,21.4-17.3,30.1c-1.1-0.2-1-0.2-2.1-0.4c-1-12.8-3-32.5-6.2-51.2c0-0.2-0.4-0.2-0.4,0c-3.3,18.7-5.2,38.5-6.2,51.2c-1.1,0.2-1,0.2-2,0.4c-4.6-8.7-10.7-19.8-17.2-30.2c-0.1-0.2-0.4-0.1-0.4,0.2c2.7,11.9,6.2,24.1,9.1,33.5c-0.9,0.6-0.9,0.6-1.8,1.2c-9.7-8.3-25.1-20.9-40.6-31.8c-0.2-0.1-0.4,0.1-0.3,0.3c10.9,15.5,23.5,30.9,31.8,40.6c-0.6,0.9-0.5,0.8-1.1,1.7c-9.4-2.9-21.6-6.5-33.5-9.2c-0.2-0.1-0.4,0.3-0.2,0.4c10.3,6.6,21.4,12.7,30.1,17.3c-0.2,1.1-0.2,1-0.4,2.1c-12.5,1-31.7,2.9-50,6c-0.2,0-0.2,0.4,0,0.4h165.8C224.9,84.4,224.9,84,224.7,83.9z'/%3E%3C/svg%3E") center / contain no-repeat;
          mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='56 0 173 92'%3E%3Cpath d='M224.7,83.9c-18.3-3.1-37.6-5-50-6c-0.2-1.1-0.2-1-0.4-2c8.7-4.6,19.8-10.7,30.2-17.2c0.2-0.1,0.1-0.4-0.2-0.4c-11.9,2.7-24.1,6.2-33.5,9.1c-0.6-0.9-0.6-0.9-1.2-1.8c8.3-9.7,20.9-25.1,31.8-40.6c0.1-0.2-0.1-0.4-0.3-0.3c-15.5,10.9-30.9,23.5-40.6,31.8c-0.9-0.6-0.8-0.5-1.7-1.1c2.9-9.4,6.5-21.6,9.2-33.5c0.1-0.2-0.3-0.4-0.4-0.2c-6.6,10.3-12.7,21.4-17.3,30.1c-1.1-0.2-1-0.2-2.1-0.4c-1-12.8-3-32.5-6.2-51.2c0-0.2-0.4-0.2-0.4,0c-3.3,18.7-5.2,38.5-6.2,51.2c-1.1,0.2-1,0.2-2,0.4c-4.6-8.7-10.7-19.8-17.2-30.2c-0.1-0.2-0.4-0.1-0.4,0.2c2.7,11.9,6.2,24.1,9.1,33.5c-0.9,0.6-0.9,0.6-1.8,1.2c-9.7-8.3-25.1-20.9-40.6-31.8c-0.2-0.1-0.4,0.1-0.3,0.3c10.9,15.5,23.5,30.9,31.8,40.6c-0.6,0.9-0.5,0.8-1.1,1.7c-9.4-2.9-21.6-6.5-33.5-9.2c-0.2-0.1-0.4,0.3-0.2,0.4c10.3,6.6,21.4,12.7,30.1,17.3c-0.2,1.1-0.2,1-0.4,2.1c-12.5,1-31.7,2.9-50,6c-0.2,0-0.2,0.4,0,0.4h165.8C224.9,84.4,224.9,84,224.7,83.9z'/%3E%3C/svg%3E") center / contain no-repeat;
}
.kicker-center { justify-content: center; }
.section-lead { color: var(--muted); font-size: 17px; max-width: 56ch; }

/* split-text (hero H1) */
.split .st-w { display: inline-block; }
.split .st-c { display: inline-block; }
html.motion .split .st-c {
  opacity: 0; transform: translateY(.55em) rotate(2.2deg);
  transition: transform .5s var(--ease-out) var(--d, 0s), opacity .4s var(--ease) var(--d, 0s);
}
html.motion .split.in .st-c, html.motion .split.st-instant .st-c { opacity: 1; transform: none; }
html.motion .split.st-instant .st-c { transition: none; }
html.motion .split.reveal { opacity: 1; transform: none; }

/* naglowki rozdzialow "nalewaja sie swiatlem" przy wejsciu */
.fill-title { font-size: clamp(30px, 4.8vw, 54px); font-weight: 600; max-width: 20ch; }
@supports ((-webkit-background-clip: text) or (background-clip: text)) {
  html.motion .fill-title {
    background: linear-gradient(100deg, var(--ink) 0 46%, color-mix(in srgb, var(--ink) 55%, transparent) 54% 100%);
    background-size: 240% 100%;
    background-position: 100% 0;
    -webkit-background-clip: text; background-clip: text;
    color: transparent;
    transition: background-position 1.1s var(--ease-out) .1s;
  }
  html.motion .fill-title.in { background-position: 0% 0; }
}

/* reveal-on-scroll */
html.motion .reveal {
  opacity: 0; transform: translateY(22px);
  transition: opacity var(--t-reveal) var(--ease-out), transform var(--t-reveal) var(--ease-out);
}
html.motion .reveal.in { opacity: 1; transform: none; }

/* ---------- 9. HERO (edytorski) ---------- */
.hero {
  position: relative;
  min-height: calc(100vh - var(--header-h));
  min-height: calc(100svh - var(--header-h));
  display: flex; flex-direction: column;
  padding: clamp(20px, 3.5vh, 40px) 0 0;
}
.hero-grid {
  display: grid; grid-template-columns: 1.35fr .85fr;
  gap: clamp(28px, 5vw, 64px); align-items: center;
  flex: 1 0 auto;
}
.hero-copy {
  background: radial-gradient(ellipse 88% 64% at 38% 48%, color-mix(in srgb, var(--bg) 60%, transparent), transparent 76%);
  border-radius: var(--r-xl);
}
.hero-title {
  font-size: clamp(42px, 7.4vw, 94px);
  font-weight: 700; line-height: 1.06; letter-spacing: -0.02em;
  max-width: 13ch; margin-bottom: 22px;
  text-wrap: balance;
}
.hero-lead { color: var(--muted); font-size: clamp(16px, 1.9vw, 19px); max-width: 54ch; margin-bottom: 32px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; }

.hero-visual { display: grid; place-items: center; min-width: 0; }
.hv-logo {
  position: relative;
  width: min(400px, 92%);
  aspect-ratio: 283.5 / 230.9;
}
.hv-logo::before {
  /* oddychajaca poswiata za logo */
  content: ""; position: absolute; inset: -18%;
  background: radial-gradient(50% 46% at 50% 42%, var(--glow-1), transparent 70%);
  filter: blur(6px);
}
html.motion .hv-logo::before { animation: hv-glow 5.5s var(--ease) infinite; }
@keyframes hv-glow {
  0%, 100% { opacity: .55; transform: scale(.97); }
  50% { opacity: 1; transform: scale(1.03); }
}
.hv-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; }
.hv-img--dark { display: none; }
[data-theme="dark"] .hv-img--light { display: none; }
[data-theme="dark"] .hv-img--dark { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]):not([data-theme="dark"]) .hv-img--light { display: none; }
  :root:not([data-theme="light"]):not([data-theme="dark"]) .hv-img--dark { display: block; }
}
.hv-sheen {
  /* rozblysk przejezdzajacy po literach - maskowany ksztaltem loga */
  position: absolute; inset: 0; pointer-events: none; overflow: hidden;
  -webkit-mask: url("assets/ures-logo-white.svg") center / contain no-repeat;
          mask: url("assets/ures-logo-white.svg") center / contain no-repeat;
}
.hv-sheen::after {
  content: ""; position: absolute; top: -20%; bottom: -20%; width: 34%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, .5), transparent);
  transform: translateX(-220%) skewX(-12deg);
}
html.motion .hv-sheen::after { animation: hv-sheen 6s var(--ease) 2.4s infinite; }
@keyframes hv-sheen {
  0% { transform: translateX(-220%) skewX(-12deg); }
  34%, 100% { transform: translateX(560%) skewX(-12deg); }
}

.hero-meta {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: clamp(16px, 3vw, 40px);
  border-top: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
  padding: 20px 0 4px;
  margin-top: clamp(30px, 5vw, 56px);
}
.hm-label {
  display: block; font: 600 11px/1 var(--sans); letter-spacing: .18em;
  text-transform: uppercase; color: var(--label); margin-bottom: 8px;
}
.hm-block ul { display: flex; flex-wrap: wrap; column-gap: 10px; row-gap: 4px; }
.hm-block li { color: var(--muted); font-size: 14.5px; line-height: 1.5; }
.hm-block li:not(:last-child)::after { content: "·"; margin-left: 10px; opacity: .45; }
.hm-coords { font-variant-numeric: tabular-nums; letter-spacing: .05em; opacity: .8; }

/* ---------- 10. MARQUEE (skew od predkosci scrolla ustawia JS) ---------- */
.marquee {
  overflow: hidden; padding: clamp(18px, 3vw, 30px) 0;
  border-block: 1px solid color-mix(in srgb, var(--border) 55%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
          mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  transition: transform .35s var(--ease);
}
.marquee-track { display: flex; width: max-content; }
html.motion .marquee-track { animation: mq-roll 44s linear infinite; }
.mq-group { display: flex; align-items: center; gap: clamp(26px, 3.6vw, 48px); padding-right: clamp(26px, 3.6vw, 48px); }
.mq-group span {
  font-family: var(--display); font-weight: 700; text-transform: uppercase;
  font-size: clamp(22px, 3.6vw, 40px); letter-spacing: .02em; white-space: nowrap;
  color: transparent;
  -webkit-text-stroke: 1px color-mix(in srgb, var(--label) 62%, transparent);
}
.mq-sun { width: clamp(24px, 3vw, 36px); height: auto; fill: var(--label); opacity: .75; flex: none; }
@supports not (-webkit-text-stroke: 1px red) {
  .mq-group span { color: var(--label); opacity: .5; }
}
@keyframes mq-roll { to { transform: translateX(-50%); } }

/* ---------- 11. ROZDZIALY ---------- */
.chapter { padding-block: clamp(72px, 11vw, 128px); position: relative; }
.chapter:not(.process):not(.contact) { content-visibility: auto; contain-intrinsic-size: auto 720px; }

.ch-head {
  display: grid; grid-template-columns: auto 1fr auto;
  gap: clamp(18px, 3.5vw, 44px); align-items: end;
  margin-bottom: clamp(30px, 5vw, 56px);
}
.ch-no {
  font-family: var(--display); font-weight: 700;
  font-size: clamp(64px, 9.5vw, 124px); line-height: .82;
  color: transparent;
  -webkit-text-stroke: 1.5px color-mix(in srgb, var(--label) 55%, transparent);
  user-select: none;
}
@supports not (-webkit-text-stroke: 1px red) {
  .ch-no { color: color-mix(in srgb, var(--label) 30%, transparent); }
}
.ch-title { min-width: 0; }
.ch-title .section-lead { margin: 10px 0 0; }

/* ---------- 12. O NAS ---------- */
.about-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: clamp(28px, 5vw, 72px); align-items: start; }
.about-copy p { color: var(--muted); font-size: 16.5px; }
.about-copy p:first-of-type { color: var(--ink); font-size: 18px; }
.ruled-list { border-bottom: 1px solid color-mix(in srgb, var(--border) 80%, transparent); }
.ruled-list li {
  display: flex; gap: 14px; align-items: flex-start;
  padding: 18px 4px;
  border-top: 1px solid color-mix(in srgb, var(--border) 80%, transparent);
  font-weight: 500; font-size: 15.5px;
}
.rl-sun { width: 22px; height: 12px; flex: none; margin-top: 5px; fill: var(--label); }

/* ---------- 13. USLUGI: talia sticky-stack ---------- */
.stack { display: grid; gap: 18px; padding-bottom: 22vh; /* ogon: ostatnia karta dojezdza do slotu na srodku */ }
.stack-card {
  position: sticky;
  /* karty parkuja na SRODKU ekranu (z lekkim schodkiem na "grzbiety" talii);
     max() pilnuje, by na niskich ekranach nie wjechaly pod header */
  top: max(calc(var(--header-h) + 16px), calc(50vh - min(17vh, 155px) + var(--i, 0) * 16px));
  top: max(calc(var(--header-h) + 16px), calc(50svh - min(17vh, 155px) + var(--i, 0) * 16px));
  display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
  gap: clamp(20px, 4vw, 56px); align-items: start;
  padding: clamp(26px, 4vw, 44px);
  border-radius: var(--r-xl);
  background: var(--panel-strong); border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  min-height: clamp(200px, 30vh, 280px);
  overflow: hidden;
}
.stack-card:nth-child(2) { border-color: color-mix(in srgb, var(--accent) 22%, var(--border)); }
.stack-card:nth-child(3) { border-color: color-mix(in srgb, var(--accent) 32%, var(--border)); }
.stack-card:nth-child(4) { border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); }
.stk-head { min-width: 0; }
.sc-no {
  display: block; font-family: var(--display); font-weight: 700;
  font-size: clamp(40px, 5vw, 60px); line-height: 1; margin-bottom: 12px;
  color: transparent;
  -webkit-text-stroke: 1.2px color-mix(in srgb, var(--label) 60%, transparent);
}
@supports not (-webkit-text-stroke: 1px red) {
  .sc-no { color: color-mix(in srgb, var(--label) 35%, transparent); }
}
.stack-card h3 { font-size: clamp(21px, 2.6vw, 28px); font-weight: 600; margin: 0; }
.stack-card ul { display: grid; gap: 12px; align-content: center; padding-top: 6px; }
.stack-card li {
  position: relative; padding-left: 28px;
  color: var(--muted); font-size: 15.5px;
}
.stack-card li::before {
  content: ""; position: absolute; left: 0; top: .42em; width: 16px; height: 9px;
  background: var(--label);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='56 0 173 92'%3E%3Cpath d='M224.7,83.9c-18.3-3.1-37.6-5-50-6c-0.2-1.1-0.2-1-0.4-2c8.7-4.6,19.8-10.7,30.2-17.2c0.2-0.1,0.1-0.4-0.2-0.4c-11.9,2.7-24.1,6.2-33.5,9.1c-0.6-0.9-0.6-0.9-1.2-1.8c8.3-9.7,20.9-25.1,31.8-40.6c0.1-0.2-0.1-0.4-0.3-0.3c-15.5,10.9-30.9,23.5-40.6,31.8c-0.9-0.6-0.8-0.5-1.7-1.1c2.9-9.4,6.5-21.6,9.2-33.5c0.1-0.2-0.3-0.4-0.4-0.2c-6.6,10.3-12.7,21.4-17.3,30.1c-1.1-0.2-1-0.2-2.1-0.4c-1-12.8-3-32.5-6.2-51.2c0-0.2-0.4-0.2-0.4,0c-3.3,18.7-5.2,38.5-6.2,51.2c-1.1,0.2-1,0.2-2,0.4c-4.6-8.7-10.7-19.8-17.2-30.2c-0.1-0.2-0.4-0.1-0.4,0.2c2.7,11.9,6.2,24.1,9.1,33.5c-0.9,0.6-0.9,0.6-1.8,1.2c-9.7-8.3-25.1-20.9-40.6-31.8c-0.2-0.1-0.4,0.1-0.3,0.3c10.9,15.5,23.5,30.9,31.8,40.6c-0.6,0.9-0.5,0.8-1.1,1.7c-9.4-2.9-21.6-6.5-33.5-9.2c-0.2-0.1-0.4,0.3-0.2,0.4c10.3,6.6,21.4,12.7,30.1,17.3c-0.2,1.1-0.2,1-0.4,2.1c-12.5,1-31.7,2.9-50,6c-0.2,0-0.2,0.4,0,0.4h165.8C224.9,84.4,224.9,84,224.7,83.9z'/%3E%3C/svg%3E") center / contain no-repeat;
          mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='56 0 173 92'%3E%3Cpath d='M224.7,83.9c-18.3-3.1-37.6-5-50-6c-0.2-1.1-0.2-1-0.4-2c8.7-4.6,19.8-10.7,30.2-17.2c0.2-0.1,0.1-0.4-0.2-0.4c-11.9,2.7-24.1,6.2-33.5,9.1c-0.6-0.9-0.6-0.9-1.2-1.8c8.3-9.7,20.9-25.1,31.8-40.6c0.1-0.2-0.1-0.4-0.3-0.3c-15.5,10.9-30.9,23.5-40.6,31.8c-0.9-0.6-0.8-0.5-1.7-1.1c2.9-9.4,6.5-21.6,9.2-33.5c0.1-0.2-0.3-0.4-0.4-0.2c-6.6,10.3-12.7,21.4-17.3,30.1c-1.1-0.2-1-0.2-2.1-0.4c-1-12.8-3-32.5-6.2-51.2c0-0.2-0.4-0.2-0.4,0c-3.3,18.7-5.2,38.5-6.2,51.2c-1.1,0.2-1,0.2-2,0.4c-4.6-8.7-10.7-19.8-17.2-30.2c-0.1-0.2-0.4-0.1-0.4,0.2c2.7,11.9,6.2,24.1,9.1,33.5c-0.9,0.6-0.9,0.6-1.8,1.2c-9.7-8.3-25.1-20.9-40.6-31.8c-0.2-0.1-0.4,0.1-0.3,0.3c10.9,15.5,23.5,30.9,31.8,40.6c-0.6,0.9-0.5,0.8-1.1,1.7c-9.4-2.9-21.6-6.5-33.5-9.2c-0.2-0.1-0.4,0.3-0.2,0.4c10.3,6.6,21.4,12.7,30.1,17.3c-0.2,1.1-0.2,1-0.4,2.1c-12.5,1-31.7,2.9-50,6c-0.2,0-0.2,0.4,0,0.4h165.8C224.9,84.4,224.9,84,224.7,83.9z'/%3E%3C/svg%3E") center / contain no-repeat;
}
.sc-sun {
  position: absolute; right: -18px; bottom: -12px; width: 130px;
  fill: var(--accent); opacity: .1; pointer-events: none;
}

/* ---------- 14. POSREDNICTWO: lista-indeks ---------- */
.index-list { border-bottom: 1px solid color-mix(in srgb, var(--border) 80%, transparent); }
.idx-row {
  position: relative; overflow: hidden;
  display: grid; grid-template-columns: clamp(44px, 6vw, 76px) 1fr auto;
  gap: clamp(14px, 2.5vw, 26px); align-items: center;
  padding: clamp(20px, 3vw, 30px) 8px;
  border-top: 1px solid color-mix(in srgb, var(--border) 80%, transparent);
}
.idx-row::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: var(--glow-2);
  transform: translateX(-101%);
  transition: transform .5s var(--ease-out);
}
.idx-no {
  font-family: var(--display); font-weight: 600; font-size: 14px;
  letter-spacing: .1em; color: var(--label);
}
.idx-copy h3 { font-size: clamp(19px, 2.4vw, 26px); font-weight: 600; margin: 0 0 4px; }
.idx-copy p { color: var(--muted); font-size: 15px; margin: 0; max-width: 62ch; }
.idx-sun {
  width: 28px; height: 15px; fill: var(--label);
  opacity: 0; transform: translateX(-10px);
  transition: opacity .35s var(--ease), transform .35s var(--ease-out);
}

/* ---------- 15. PROCES (sticky scena) ---------- */
.process { padding-block: 0; }
.process-pin { height: 300vh; }
.process-stage {
  position: sticky; top: var(--header-h);
  min-height: calc(100vh - var(--header-h));
  min-height: calc(100svh - var(--header-h));
  display: flex; align-items: center;
  padding-block: clamp(36px, 5vh, 64px);
}
.process-track { position: relative; }
.beam {
  position: relative; height: 2px; margin: 0 0 38px;
  background: color-mix(in srgb, var(--border) 80%, transparent);
  border-radius: 2px;
}
.beam-fill {
  position: absolute; inset: 0;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0); transform-origin: left;
  box-shadow: 0 0 14px var(--glow-1);
  border-radius: 2px;
}
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(16px, 2.4vw, 28px); }
.step { padding: 4px 10px 0 0; transition: opacity .45s var(--ease); }
html.motion .process-stage .step { opacity: .35; }
html.motion .process-stage .step.lit { opacity: 1; }
.step-no {
  display: block; font-family: var(--display); font-weight: 700;
  font-size: clamp(30px, 3.4vw, 42px); line-height: 1; margin-bottom: 12px;
  color: transparent;
  -webkit-text-stroke: 1.2px color-mix(in srgb, var(--label) 60%, transparent);
  transition: color .45s var(--ease);
}
@supports not (-webkit-text-stroke: 1px red) {
  .step-no { color: color-mix(in srgb, var(--label) 40%, transparent); }
}
.step.lit .step-no { color: var(--label); text-shadow: 0 0 22px var(--glow-1); }
.step h3 { font-size: 17.5px; margin: 0 0 6px; }
.step p { color: var(--muted); font-size: 14.5px; margin: 0; }

/* ---------- 16. INNOWACJE ---------- */
.innovation-grid { display: grid; grid-template-columns: 1.25fr .75fr; gap: clamp(28px, 5vw, 72px); align-items: center; }
.innovation-copy { color: var(--muted); font-size: clamp(17px, 2vw, 20px); line-height: 1.7; margin: 0; }
.innovation-badge {
  display: grid; justify-items: center; gap: 20px;
  padding: clamp(24px, 3.5vw, 40px);
  background: var(--panel); border: 1px solid color-mix(in srgb, var(--accent) 30%, var(--border));
  border-radius: var(--r-xl);
  box-shadow: 0 0 60px var(--glow-2), var(--shadow-md);
}
.ib-logo { width: min(210px, 62%); }
.ib-logo--dark { display: none; }
[data-theme="dark"] .ib-logo--light { display: none; }
[data-theme="dark"] .ib-logo--dark { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]):not([data-theme="dark"]) .ib-logo--light { display: none; }
  :root:not([data-theme="light"]):not([data-theme="dark"]) .ib-logo--dark { display: block; }
}

/* ---------- 17. KONTAKT ---------- */
.contact-inner { display: grid; justify-items: center; text-align: center; }
.contact .fill-title { font-size: clamp(32px, 5.4vw, 58px); max-width: 24ch; }
.contact-form {
  width: 100%; max-width: 720px; margin: 26px auto 0;
  padding: clamp(24px, 4vw, 40px);
  background: var(--panel-strong); border: 1px solid color-mix(in srgb, var(--accent) 24%, var(--border));
  border-radius: var(--r-xl); box-shadow: 0 0 60px var(--glow-2), var(--shadow-md);
  text-align: left;
}
.cf-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.cf-field { margin-bottom: 16px; }
.cf-field label {
  display: block; font: 600 12.5px/1 var(--sans); letter-spacing: .08em;
  text-transform: uppercase; color: var(--muted); margin-bottom: 8px;
}
.cf-field input, .cf-field textarea {
  width: 100%; padding: 13px 14px;
  font: 400 15.5px/1.5 var(--sans); color: var(--ink);
  background: color-mix(in srgb, var(--surface) 55%, transparent);
  border: 1px solid var(--border); border-radius: var(--r-md);
  transition: border-color var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease);
}
.cf-field textarea { resize: vertical; min-height: 140px; }
.cf-field input:focus, .cf-field textarea:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--glow-2);
}
.cf-field input:user-invalid, .cf-field textarea:user-invalid { border-color: var(--alert); }
.cf-hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.cf-actions { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; margin-top: 4px; }
.cf-privacy { margin: 14px 0 0; font-size: 13px; line-height: 1.55; color: var(--muted); }
.cf-privacy a { color: var(--label); text-underline-offset: 3px; }
.cf-status { margin: 0; font-size: 14.5px; color: var(--muted); min-height: 1.5em; }
.cf-status.ok { color: var(--label); }
.cf-status.err { color: var(--alert); }

/* ---------- 18. FOOTER + zachod ---------- */
.site-footer {
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  padding-top: clamp(10px, 2vw, 20px);
}
.sunset {
  position: relative; height: clamp(52px, 8vw, 96px);
  border-bottom: 1px solid color-mix(in srgb, var(--label) 40%, var(--border));
  margin-bottom: clamp(30px, 5vw, 52px);
  overflow: hidden;
}
.sunset-sun {
  position: absolute; left: 50%; bottom: -1px;
  width: clamp(110px, 15vw, 180px); height: auto;
  transform: translateX(-50%);
  fill: var(--label);
  filter: drop-shadow(0 0 22px var(--glow-1));
}
.footer-grid { display: grid; grid-template-columns: 1.1fr 1.2fr .7fr; gap: clamp(24px, 4vw, 48px); }
.footer-brand .brand-logo { height: 56px; margin-bottom: 14px; }
.footer-tag { color: var(--muted); font-size: 14.5px; }
.footer-company { font-style: normal; display: grid; gap: 6px; color: var(--muted); font-size: 14.5px; align-content: start; }
.footer-company strong { color: var(--ink); }
.footer-nav { display: grid; gap: 10px; align-content: start; }
.footer-nav a { color: var(--muted); font-weight: 500; font-size: 14.5px; }
.footer-nav a:hover { color: var(--label); text-decoration: underline; text-underline-offset: 3px; }
.footer-bottom {
  margin-top: clamp(24px, 4vw, 40px); padding: 18px 20px;
  border-top: 1px solid color-mix(in srgb, var(--border) 45%, transparent);
  color: var(--muted); font-size: 13px;
}

/* ---------- 19. HOVER (tylko realny wskaznik) ---------- */
@media (hover: hover) and (pointer: fine) {
  .idx-row:hover::before { transform: translateX(0); }
  .idx-row:hover .idx-sun { opacity: .95; transform: none; }
}

/* ---------- 20. RESPONSYWNOSC ---------- */
@media (max-width: 1024px) {
  .main-nav { display: none; }
  .nav-toggle { display: flex; }
  .btn-cta { display: none; }
  .about-grid { grid-template-columns: 1fr; }
  .innovation-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-grid { grid-template-columns: 1.3fr .7fr; }
}
@media (max-width: 768px) {
  .sb-grain { display: none; }
  .hero { padding-bottom: 0; }
  .hero-grid { grid-template-columns: 1fr; align-items: start; gap: 26px; }
  .hero-visual { order: 2; }
  .hv-logo { width: min(260px, 62%); }
  .hero-copy {
    background: radial-gradient(ellipse 92% 62% at 30% 45%, color-mix(in srgb, var(--bg) 66%, transparent), transparent 78%);
  }
  .hero-title { font-size: clamp(38px, 11vw, 62px); }
  .hero-meta { grid-template-columns: 1fr 1fr; gap: 16px; padding: 14px 0 16px; }
  .btn-ghost { background: color-mix(in srgb, var(--surface) 72%, transparent); }

  .ch-head { grid-template-columns: 1fr; align-items: start; gap: 10px; }
  .ch-no { font-size: clamp(52px, 15vw, 84px); order: -1; }
  .stack-card { grid-template-columns: 1fr; min-height: 0; gap: 14px; }
  .stack-card ul { padding-top: 0; }

  .idx-row { grid-template-columns: 40px 1fr; }
  .idx-sun { display: none; }

  /* Proces: bez sticky - pionowa os czasu */
  .process { padding-block: clamp(72px, 11vw, 128px); }
  .process-pin { height: auto; }
  .process-stage { position: static; min-height: 0; display: block; padding-block: 0; }
  .beam { display: none; }
  .steps { grid-template-columns: 1fr; gap: 0; position: relative; padding-left: 26px; }
  .steps::before {
    content: ""; position: absolute; left: 8px; top: 8px; bottom: 8px; width: 2px;
    background: color-mix(in srgb, var(--border) 80%, transparent); border-radius: 2px;
  }
  html.motion .process-stage .step { opacity: 1; }
  .step { margin-bottom: 26px; position: relative; }
  .step::before {
    content: ""; position: absolute; left: -24px; top: 10px; width: 12px; height: 12px;
    border-radius: 50%; background: var(--border);
    transition: background .4s var(--ease), box-shadow .4s var(--ease);
  }
  .step.in::before { background: var(--accent); box-shadow: 0 0 12px var(--glow-1); }

  .cf-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .hero-meta { grid-template-columns: 1fr 1fr; }
  .brand-logo { height: 40px; }
}

/* ---------- 21. REDUCED MOTION ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .preloader { display: none !important; }
  html.motion .reveal, html.motion .split .st-c { opacity: 1 !important; transform: none !important; transition: none !important; }
  html.motion .fill-title { background-position: 0 0 !important; transition: none !important; }
  html.motion .marquee-track { animation: none; }
  .marquee { transition: none; }
  html.motion .hv-logo::before, html.motion .hv-sheen::after { animation: none; }
  .hv-sheen { display: none; }
  html.motion .hero-cta .btn-primary { animation: none; }
  html.motion .process-stage .step { opacity: 1; }
  .stack-card, .btn, .step, .idx-row::before, .idx-sun { transition: none; }
}

/* ---------- 22. PRINT ---------- */
@media print {
  .site-bg, .preloader, .marquee, .scroll-progress, .theme-toggle, .lang-toggle,
  .nav-toggle, .mobile-nav, .chapter-rail, .sunset { display: none !important; }
  :root, [data-theme="dark"] { --bg: #fff; --ink: #000; --muted: #333; --panel: #fff; --panel-strong: #fff; --border: #bbb; }
  body { background: #fff !important; color: #000; }
  .site-header { position: static; background: #fff; }
  .stack-card { position: static; }
  a { color: #000; }
}

/* ---------- 23. PODSTRONA PRAWNA (polityka-prywatnosci.html) ----------
   Lekki layout bez sceny/preloadera; korzysta z tokenow motywu. */
.legal-page { min-height: 100vh; background: var(--bg); }
.legal { max-width: 760px; margin: 0 auto; padding: 96px 24px 80px; }
.legal .back-link { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; color: var(--label); text-decoration: none; margin-bottom: 40px; }
.legal .back-link:hover { text-decoration: underline; text-underline-offset: 3px; }
.legal h1 { font-size: clamp(30px, 5vw, 42px); margin: 0 0 6px; }
.legal .legal-date { color: var(--muted); font-size: 14px; margin: 0 0 36px; }
.legal h2 { font-size: 20px; margin: 36px 0 12px; }
.legal p, .legal li { font-size: 15.5px; line-height: 1.7; color: var(--ink); }
.legal ul { padding-left: 22px; margin: 10px 0 18px; }
.legal li { margin: 6px 0; }
.legal a { color: var(--label); text-decoration: underline; text-underline-offset: 3px; }
.legal strong { color: var(--ink); }