/* =========================================================================
   OZE — „ARKUSZ” · samodzielny arkusz strony /dla-oze
   Koncept: landing jako arkusz doboru — papier w siatce milimetrowej, linie
   podziałki, opisy w monospace, jeden akcent (napięcie) i działający kalkulator
   konstrukcji w hero. Strona kampanijna: świadomie poza głównym design systemem.
   ========================================================================= */

/* ---------- Fonty (Inter + Roboto Mono; bez kroju szeryfowego — to nie jest palarnia) ---------- */
@font-face{font-family:'Inter';font-style:normal;font-weight:400;font-display:swap;src:url('/assets/fonts/inter-latin-400.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+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'Inter';font-style:normal;font-weight:400;font-display:swap;src:url('/assets/fonts/inter-latinext-400.woff2') format('woff2');unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'Inter';font-style:normal;font-weight:500;font-display:swap;src:url('/assets/fonts/inter-latin-500.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+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'Inter';font-style:normal;font-weight:500;font-display:swap;src:url('/assets/fonts/inter-latinext-500.woff2') format('woff2');unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'Inter';font-style:normal;font-weight:600;font-display:swap;src:url('/assets/fonts/inter-latin-600.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+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'Inter';font-style:normal;font-weight:600;font-display:swap;src:url('/assets/fonts/inter-latinext-600.woff2') format('woff2');unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'Roboto Mono';font-style:normal;font-weight:500;font-display:swap;src:url('/assets/fonts/robotomono-latin-500.woff2') format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'Roboto Mono';font-style:normal;font-weight:500;font-display:swap;src:url('/assets/fonts/robotomono-latinext-500.woff2') format('woff2');unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'Roboto Mono';font-style:normal;font-weight:700;font-display:swap;src:url('/assets/fonts/robotomono-latin-700.woff2') format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'Roboto Mono';font-style:normal;font-weight:700;font-display:swap;src:url('/assets/fonts/robotomono-latinext-700.woff2') format('woff2');unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}

/* ---------- Tokeny ---------- */
:root{
  --paper:#e9ebe4;         /* kalka techniczna — tło bazowe */
  --paper-2:#f2f3ee;       /* jaśniejszy arkusz — karty */
  --paper-3:#dfe2d8;       /* przybrudzony pas — sekcja tarcia */
  --ink:#0c110e;           /* rysik */
  --ink-2:#39423c;         /* tekst ciągły */
  --ink-3:#6d766e;         /* opisy, mono */
  --rule:#c2c7ba;          /* linia cienka */
  --rule-2:#a9b0a0;
  --volt:#c9f24a;          /* napięcie — jedyny akcent */
  --volt-2:#a8d61f;
  --graphite:#0e1512;      /* sekcje odwrócone */
  --graphite-2:#18211c;
  --heat:#ff5a2b;          /* wyłącznie skala klasy energetycznej */
  --f:'Inter',ui-sans-serif,system-ui,-apple-system,sans-serif;
  --m:'Roboto Mono',ui-monospace,Menlo,monospace;
  --e:cubic-bezier(.2,.8,.2,1);
  --wrap:1220px;
}

/* ---------- Baza ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;scroll-padding-top:90px}
body{
  background:var(--paper);color:var(--ink-2);font-family:var(--f);font-size:16px;line-height:1.62;
  -webkit-font-smoothing:antialiased;overflow-x:clip;
  /* siatka milimetrowa: cienka co 8px, gruba co 80px */
  background-image:
    repeating-linear-gradient(90deg,rgba(12,17,14,.035) 0 1px,transparent 1px 80px),
    repeating-linear-gradient(0deg,rgba(12,17,14,.035) 0 1px,transparent 1px 80px),
    repeating-linear-gradient(90deg,rgba(12,17,14,.018) 0 1px,transparent 1px 16px),
    repeating-linear-gradient(0deg,rgba(12,17,14,.018) 0 1px,transparent 1px 16px);
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button,select{font:inherit;color:inherit;background:none;border:0}
button{cursor:pointer}
table{border-collapse:collapse;width:100%}
::selection{background:var(--volt);color:var(--ink)}
:focus-visible{outline:2px solid var(--ink);outline-offset:3px}
.mono{font-family:var(--m);font-weight:500;font-feature-settings:'tnum' 1}
.skip-link{position:absolute;left:-999px;top:0;z-index:200;background:var(--ink);color:var(--paper);padding:10px 16px;font-weight:600}
.skip-link:focus{left:0}

.wrap{width:min(100% - 40px,var(--wrap));margin-inline:auto}

/* ---------- Pasek postępu ---------- */
.prog{position:fixed;inset:0 0 auto 0;z-index:130;height:2px;background:rgba(12,17,14,.08)}
.prog i{display:block;height:100%;width:0;background:var(--ink);transition:width .1s linear}

/* ---------- Nawigacja ---------- */
.anav{position:fixed;inset:2px 0 auto 0;z-index:125;display:flex;align-items:center;justify-content:space-between;
  gap:20px;padding:14px clamp(16px,3vw,34px);
  background:rgba(233,235,228,.82);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;transition:border-color .3s}
.anav.is-stuck{border-bottom-color:var(--rule)}
.anav-brand{display:flex;align-items:center;gap:10px}
.anav-brand img{height:24px;width:auto}
.anav-tag{font-size:.62rem;letter-spacing:.18em;text-transform:uppercase;color:var(--ink);
  border:1px solid var(--ink);border-radius:2px;padding:2px 6px;line-height:1}
.anav-links{display:flex;align-items:center;gap:clamp(12px,2.2vw,26px);
  font-family:var(--m);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase}
.anav-links a{color:var(--ink-3);transition:color .2s}
.anav-links a:hover{color:var(--ink)}
.anav-cta{color:var(--ink) !important;border:1px solid var(--ink);border-radius:2px;padding:9px 14px;
  transition:background .2s,color .2s}
.anav-cta:hover{background:var(--ink);color:var(--paper) !important}
@media (max-width:640px){.anav-links a:not(.anav-cta){display:none}}

/* ---------- Indeks arkusza (rail) ---------- */
.rail{position:fixed;left:18px;top:50%;translate:0 -50%;z-index:118;display:none}
@media (min-width:1500px){.rail{display:block}}
.rail-list{display:flex;flex-direction:column;gap:2px}
.rail-list a{display:flex;align-items:center;gap:10px;padding:4px 6px;
  font-family:var(--m);font-size:.66rem;letter-spacing:.1em;color:var(--ink-3);
  border-left:2px solid var(--rule);transition:color .25s,border-color .25s}
.rail-list b{font-weight:700}
.rail-list span{text-transform:uppercase;opacity:0;translate:-6px 0;transition:opacity .25s,translate .25s}
.rail-list a:hover span,.rail-list a.is-on span{opacity:1;translate:0 0}
.rail-list a.is-on{color:var(--ink);border-left-color:var(--ink)}

/* ---------- Sekcje ---------- */
.ark{position:relative;padding:clamp(76px,10vw,140px) 0}
.ark--friction{background:var(--paper-3)}
.ark--system{background:var(--paper-2)}
.ark--flow,.ark--end{background:var(--graphite);color:rgba(240,243,236,.72)}
.ark--flow .h2,.ark--end .h-end{color:#f3f5ee}
.ark--flow .ark-num,.ark--flow .ark-lead{color:rgba(240,243,236,.6)}

/* Nagłówek sekcji: pasek podziałki + numer + tytuł */
.ark-head{margin-bottom:clamp(38px,5vw,66px)}
.ark-head::before{content:'';display:block;height:9px;margin-bottom:22px;border-top:1px solid var(--rule);
  background:repeating-linear-gradient(90deg,var(--rule) 0 1px,transparent 1px 14px);background-size:100% 5px;background-repeat:no-repeat}
.ark--flow .ark-head::before,.ark--end .ark-head::before{border-top-color:rgba(240,243,236,.22);
  background-image:repeating-linear-gradient(90deg,rgba(240,243,236,.22) 0 1px,transparent 1px 14px)}
.ark-num{display:block;font-size:.72rem;letter-spacing:.22em;color:var(--ink-3);margin-bottom:16px}
.ark-lead{max-width:56ch;margin-top:20px;font-size:clamp(1rem,1.5vw,1.14rem)}

/* ---------- Typografia ---------- */
.h1,.h2,.h-end{font-weight:600;letter-spacing:-.045em;line-height:.95;color:var(--ink);text-wrap:balance}
.h1{font-size:clamp(2.5rem,6.4vw,5.4rem)}
.h2{font-size:clamp(2rem,4.6vw,3.9rem)}
.h-end{font-size:clamp(2.4rem,6vw,5rem)}
.lead{max-width:54ch;margin-top:22px;font-size:clamp(1.02rem,1.6vw,1.18rem)}
.eyebrow{font-size:.72rem;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-3)}
.micro{font-size:.72rem;letter-spacing:.14em;color:var(--ink-3);margin-top:18px}
.ark--end .eyebrow,.ark--end .micro,.ark--end .lead{color:rgba(240,243,236,.58)}

/* Podświetlenie: blok napięcia pod linią bazową, rozjeżdża się przy wejściu sekcji */
.hl{position:relative;color:var(--ink);background:linear-gradient(transparent 62%,var(--volt) 62%);
  background-size:0 100%;background-repeat:no-repeat;transition:background-size .75s var(--e) .15s;
  -webkit-box-decoration-break:clone;box-decoration-break:clone}
.ark.is-on .hl{background-size:100% 100%}
/* Na ciemnych sekcjach blok jest nieczytelny (kryje tylko dolną część liter)
   — zamiast niego akcent kolorem tekstu i cienkie podkreślenie, ten sam ruch przy wejściu. */
.ark--flow .hl,.ark--end .hl{color:var(--volt);
  background-image:linear-gradient(var(--volt),var(--volt));background-position:0 96%;background-size:0 2px}
.ark--flow.is-on .hl,.ark--end.is-on .hl{background-size:100% 2px}

/* ---------- Przyciski ---------- */
.btn{display:inline-flex;align-items:center;gap:.6em;font-weight:600;font-size:1rem;
  background:var(--ink);color:var(--paper);padding:16px 26px;border-radius:2px;
  transition:background .22s,translate .22s var(--e)}
.btn:hover{background:#000;translate:0 -2px}
.btn .btn-a{transition:translate .28s var(--e)}
.btn:hover .btn-a{translate:4px 0}
.btn--ghost{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink)}
.btn--ghost:hover{background:var(--ink);color:var(--paper)}
.btn--sm{font-size:.92rem;padding:13px 20px}
.ark--flow .btn,.ark--end .btn{background:var(--volt);color:var(--ink)}
.ark--flow .btn:hover,.ark--end .btn:hover{background:#d8ff63}
.ark--end .btn--ghost{background:transparent;color:#f3f5ee;box-shadow:inset 0 0 0 1px rgba(240,243,236,.42)}
.ark--end .btn--ghost:hover{background:#f3f5ee;color:var(--graphite)}
.ctas{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}

/* ====================================================================
   00 · HERO
   ==================================================================== */
.ark--hero{padding-top:clamp(120px,14vw,180px)}
.hero-grid{display:grid;gap:clamp(34px,5vw,60px);align-items:center;grid-template-columns:minmax(0,1fr)}
@media (min-width:1080px){.hero-grid{grid-template-columns:minmax(0,1.02fr) minmax(0,.98fr)}}
.hero-copy .h1{margin-top:18px}

/* Metryka arkusza — tabliczka rysunkowa w rogu hero */
.stamp{display:none;position:absolute;right:clamp(16px,3vw,34px);bottom:34px;
  border:1px solid var(--ink);background:rgba(242,243,238,.72);backdrop-filter:blur(4px)}
@media (min-width:1180px){.stamp{display:block}}
.stamp div{display:grid;grid-template-columns:78px 1fr;border-bottom:1px solid var(--rule)}
.stamp div:last-child{border-bottom:0}
.stamp span,.stamp b{padding:5px 10px;font-size:.6rem;letter-spacing:.14em;text-transform:uppercase}
.stamp span{color:var(--ink-3);border-right:1px solid var(--rule)}
.stamp b{color:var(--ink);font-weight:700}

/* ---------- Przyrząd: kalkulator ---------- */
.rig{background:var(--paper-2);border:1px solid var(--ink);border-radius:3px;
  box-shadow:14px 14px 0 -1px rgba(12,17,14,.07);overflow:hidden}
.rig-bar{display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:11px 16px;background:var(--graphite);color:#eef1e8}
.rig-name{font-size:.78rem;font-weight:600;letter-spacing:.02em}
.rig-name::before{content:'';display:inline-block;width:7px;height:7px;margin-right:9px;border-radius:50%;
  background:var(--volt);vertical-align:middle;animation:blink 2.4s ease-in-out infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.35}}
.rig-id{font-size:.64rem;letter-spacing:.16em;color:rgba(238,241,232,.55)}

.rig-io{display:grid;grid-template-columns:minmax(0,1fr)}
@media (min-width:520px){.rig-io{grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr)}}
.rig-fields{padding:16px;display:flex;flex-direction:column;gap:12px;border-bottom:1px solid var(--rule)}
@media (min-width:520px){.rig-fields{border-bottom:0;border-right:1px solid var(--rule)}}
.fld{display:flex;flex-direction:column;gap:5px}
.fld[hidden]{display:none}
.fld-lab{font-size:.62rem;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-3)}
.fld select{width:100%;padding:9px 10px;font-size:.88rem;color:var(--ink);background:#fff;
  border:1px solid var(--rule-2);border-radius:2px;cursor:pointer;
  appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--ink) 50%),linear-gradient(135deg,var(--ink) 50%,transparent 50%);
  background-position:calc(100% - 15px) 52%,calc(100% - 10px) 52%;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.fld select:hover{border-color:var(--ink)}
.step{display:flex;align-items:center;border:1px solid var(--rule-2);border-radius:2px;background:#fff}
.step button{width:34px;height:34px;font-size:1.05rem;font-weight:600;color:var(--ink-3);transition:background .18s,color .18s}
.step button:hover{background:var(--volt);color:var(--ink)}
.step output{flex:1;text-align:center;font-family:var(--m);font-weight:700;font-size:.95rem;color:var(--ink)}
.seg{display:flex;border:1px solid var(--rule-2);border-radius:2px;overflow:hidden;background:#fff}
.seg button{flex:1;padding:8px 6px;font-size:.8rem;color:var(--ink-3);transition:background .18s,color .18s}
.seg button.is-on{background:var(--ink);color:var(--paper)}

.rig-draw{padding:16px;display:flex;flex-direction:column;justify-content:center;gap:10px;background:#fff}
.rig-draw svg{width:100%;height:auto}
.rig-draw .pnl{fill:rgba(14,21,18,.88);stroke:#fff;stroke-width:.6}
.rig-draw .rail-l{stroke:var(--volt-2);stroke-width:1.6}
.rig-draw .clamp{fill:var(--volt-2)}
.rig-dims{font-size:.63rem;letter-spacing:.09em;color:var(--ink-3);text-align:center}

.rig-out{padding:16px;border-top:1px solid var(--rule)}
.rig-out-head{display:flex;justify-content:space-between;font-size:.62rem;letter-spacing:.16em;
  text-transform:uppercase;color:var(--ink-3);padding-bottom:9px;border-bottom:1px solid var(--rule)}
.bom{margin:9px 0 0;display:flex;flex-direction:column;gap:5px;min-height:150px}
.bom li{display:flex;align-items:baseline;gap:7px;font-size:.83rem;color:var(--ink-2);
  animation:bomin .32s var(--e) both;animation-delay:calc(var(--i,0) * 28ms)}
@keyframes bomin{from{opacity:0;translate:0 5px}to{opacity:1;translate:0 0}}
.bom .b-n{flex:0 1 auto;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.bom .b-d{flex:1 1 14px;min-width:14px;border-bottom:1px dotted var(--rule-2);translate:0 -4px}
.bom .b-q{font-family:var(--m);font-weight:700;color:var(--ink);white-space:nowrap}
.bom .b-p{font-family:var(--m);font-size:.76rem;color:var(--ink-3);min-width:70px;text-align:right;white-space:nowrap}
.rig-sum{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-top:14px;
  padding-top:11px;border-top:1px solid var(--ink)}
.rig-sum .mono{font-size:.62rem;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-3)}
.rig-sum b{font-family:var(--m);font-size:1.32rem;font-weight:700;color:var(--ink);letter-spacing:-.02em}
.rig-out .btn{width:100%;justify-content:center;margin-top:14px}
.rig-note{padding:12px 16px;font-size:.72rem;line-height:1.5;color:var(--ink-3);
  background:rgba(12,17,14,.04);border-top:1px solid var(--rule)}

/* Spis zawartości arkusza — filary platformy pod hero */
.pillars{margin-top:clamp(42px,5vw,70px);border-top:1px solid var(--rule);padding-top:18px}
.pillars-t{display:block;font-size:.62rem;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-3);margin-bottom:14px}
.pillars ul{display:flex;flex-wrap:wrap;gap:8px}
.pillars li{font-family:var(--m);font-weight:500;font-size:.7rem;letter-spacing:.05em;color:var(--ink-2);
  border:1px solid var(--rule-2);border-radius:2px;padding:6px 11px;background:rgba(255,255,255,.55);
  transition:border-color .2s,color .2s}
.pillars li:hover{border-color:var(--ink);color:var(--ink)}
.pillars li.is-acc{border-color:var(--ink);background:var(--volt);color:var(--ink);font-weight:700}

/* ====================================================================
   01 · STAN ZASTANY
   ==================================================================== */
.fric{display:grid;gap:1px;background:var(--rule);border:1px solid var(--rule)}
@media (min-width:720px){.fric{grid-template-columns:repeat(4,1fr)}}
.fric li{background:var(--paper-3);padding:22px 20px 26px}
.fric-t{display:block;font-size:.64rem;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-3);margin-bottom:12px}
.fric p{font-size:.98rem;color:var(--ink)}
.punch{margin-top:34px;max-width:40ch;font-size:clamp(1.2rem,2.4vw,1.75rem);font-weight:600;
  letter-spacing:-.02em;line-height:1.25;color:var(--ink)}

/* ====================================================================
   02 · PRZYRZĄDY
   ==================================================================== */
.tool{display:grid;gap:clamp(24px,4vw,54px);padding:clamp(34px,5vw,58px) 0;border-top:1px solid var(--rule)}
@media (min-width:980px){.tool{grid-template-columns:minmax(0,270px) minmax(0,1fr)}}
.tool-meta{position:relative}
@media (min-width:980px){.tool-meta{position:sticky;top:110px;align-self:start}}
.tool-num{display:block;font-size:.72rem;letter-spacing:.22em;color:var(--ink-3);margin-bottom:10px}
.tool-name{font-size:clamp(1.5rem,2.6vw,2.05rem);font-weight:600;letter-spacing:-.035em;line-height:1.02;color:var(--ink)}
.specs{margin-top:20px;border-top:1px solid var(--rule)}
.specs div{display:flex;justify-content:space-between;gap:10px;padding:7px 0;border-bottom:1px solid var(--rule);
  font-size:.68rem;letter-spacing:.06em}
.specs dt{color:var(--ink-3);text-transform:uppercase}
.specs dd{color:var(--ink);font-weight:700}
.tool-body>p{margin-bottom:14px;max-width:62ch}
.tool-claim{font-size:clamp(1.14rem,2vw,1.42rem);font-weight:600;letter-spacing:-.02em;color:var(--ink);line-height:1.3}
.ticks{margin:20px 0 24px;display:flex;flex-direction:column;gap:9px}
.ticks li{position:relative;padding-left:22px;font-size:.94rem}
.ticks li::before{content:'';position:absolute;left:0;top:.62em;width:11px;height:1px;background:var(--ink)}
.ticks li::after{content:'';position:absolute;left:0;top:calc(.62em - 3px);width:1px;height:7px;background:var(--ink)}

/* tryby kalkulatora cieplnego */
.modes{display:grid;gap:1px;background:var(--rule);border:1px solid var(--rule);margin:22px 0}
@media (min-width:760px){.modes{grid-template-columns:repeat(3,1fr)}}
.mode{background:var(--paper-2);padding:16px}
.mode-t{display:block;font-size:.62rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);margin-bottom:9px}
.mode code{display:block;font-family:var(--m);font-size:.73rem;line-height:1.55;color:var(--ink)}

/* skala klasy energetycznej */
.eclass{margin:26px 0}
.ec-bar{display:flex;border:1px solid var(--ink);border-radius:2px;overflow:hidden}
.ec-seg{flex:0 0 var(--w);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
  padding:12px 4px;border-right:1px solid var(--ink);
  background:linear-gradient(180deg,var(--volt),var(--volt));
  transition:filter .25s}
.ec-seg:last-child{border-right:0}
.ec-seg:nth-child(2){background:#dcef46}
.ec-seg:nth-child(3){background:#f0dc3c}
.ec-seg:nth-child(4){background:#ffa93c}
.ec-seg:nth-child(5){background:var(--heat)}
.ec-seg b{font-size:.94rem;font-weight:700;color:var(--ink)}
.ec-seg:last-child b,.ec-seg:last-child i{color:#fff}
.ec-seg i{font-style:normal;font-size:.62rem;letter-spacing:.04em;color:rgba(12,17,14,.62)}
.ec-cap{margin-top:9px;font-size:.66rem;letter-spacing:.08em;color:var(--ink-3)}

/* macierz sprawności */
.mx{margin:24px 0;overflow-x:auto}
.mx figcaption{font-size:.64rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);margin-bottom:10px}
.mx table{min-width:460px;border:1px solid var(--rule)}
.mx th,.mx td{padding:11px 8px;text-align:center;border:1px solid var(--rule);font-size:.86rem}
.mx thead th{font-size:.64rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);font-weight:500;background:var(--paper-2)}
.mx tbody th{font-size:.7rem;color:var(--ink-3);font-weight:500;background:var(--paper-2);text-align:right;white-space:nowrap}
.mx td{font-family:var(--m);font-weight:500;color:var(--ink);position:relative;
  background:rgba(201,242,74,calc(var(--v,0) * .92));transition:transform .18s var(--e)}
.mx td:hover{transform:scale(1.07);z-index:2;box-shadow:0 0 0 2px var(--ink);font-weight:700}
.mx td.is-max{font-weight:700;box-shadow:inset 0 0 0 2px var(--ink)}

/* ---------- Zrzuty ekranu ---------- */
.shot{margin-top:26px;border:1px solid var(--ink);border-radius:3px;overflow:hidden;background:#fff;
  box-shadow:10px 10px 0 -1px rgba(12,17,14,.06)}
.shot-bar{display:flex;align-items:center;gap:6px;padding:8px 12px;background:var(--graphite)}
.shot-bar i{width:7px;height:7px;border-radius:50%;background:rgba(240,243,236,.28)}
.shot-url{margin-left:10px;font-family:var(--m);font-size:.66rem;color:rgba(240,243,236,.6);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.shot-img{width:100%;height:auto}
.shot-todo{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:9px;
  padding:24px;text-align:center;background:
    repeating-linear-gradient(135deg,rgba(12,17,14,.045) 0 10px,transparent 10px 20px),var(--paper-2)}
.shot-todo-key{font-family:var(--m);font-size:.68rem;letter-spacing:.1em;color:var(--ink);
  border:1px solid var(--rule-2);border-radius:2px;padding:4px 9px;background:#fff}
.shot-todo-brief{max-width:52ch;font-size:.82rem;line-height:1.5;color:var(--ink-3)}
.shot-todo-dim{font-family:var(--m);font-size:.62rem;letter-spacing:.12em;color:var(--rule-2)}
.ark--flow .shot{box-shadow:none;border-color:rgba(240,243,236,.28)}
.ark--flow .shot-todo{background:repeating-linear-gradient(135deg,rgba(240,243,236,.05) 0 10px,transparent 10px 20px),var(--graphite-2)}
.ark--flow .shot-todo-key{background:var(--graphite);color:#eef1e8;border-color:rgba(240,243,236,.3)}
.ark--flow .shot-todo-brief{color:rgba(240,243,236,.55)}

.shot-pair{display:grid;gap:18px;margin-top:26px}
@media (min-width:880px){.shot-pair{grid-template-columns:repeat(2,1fr);align-items:start}}
.shot-pair .shot{margin-top:0}

/* Kadry stojące obok siebie mają różne proporcje (od 2.74:1 paska nawigacji po 0.63:1
   pionowej listy kalkulacji), więc bez wspólnej ramki rząd jest poszarpany. Każdy zrzut
   dostaje pole o proporcji --ar i wpisuje się w nie w CAŁOŚCI — `contain`, nie `cover`,
   bo przycięcie zabrałoby to, czego kadr ma dowodzić. Proporcja per rząd jest medianą
   proporcji jego zrzutów, żeby zminimalizować białe pasy. */
.shots-row .shot-img,.shot-pair .shot-img,.flow-shots .shot-img{
  width:100%;height:auto;aspect-ratio:var(--ar,16/9);object-fit:contain;background:#fff}
.shots-row{--ar:16/9}      /* 1.91 · 1.60 · 2.74 · 1.78 */
.shot-pair{--ar:3/2}       /* 1.78 kalkulatora + 1.32 mapy stref */
.flow-shots{--ar:3/2}      /* 1.28 koszyka + 1.78 zamówienia */
.shot-pair--even{--ar:1/1} /* 1.33 listy wyboru + 0.63 pionowej listy kalkulacji */
@media (min-width:880px){.shot-pair--even{grid-template-columns:repeat(2,1fr)}}

/* ====================================================================
   03 · OBIEG
   ==================================================================== */
.flow{display:grid;gap:1px;background:rgba(240,243,236,.16);border:1px solid rgba(240,243,236,.16)}
@media (min-width:860px){.flow{grid-template-columns:repeat(5,1fr)}}
.flow li{background:var(--graphite);padding:22px 18px 26px;position:relative}
.flow-n{display:block;font-size:.66rem;letter-spacing:.2em;color:var(--volt);margin-bottom:14px}
.flow h3{font-size:1.02rem;font-weight:600;color:#f3f5ee;margin-bottom:7px;letter-spacing:-.01em}
.flow p{font-size:.86rem;color:rgba(240,243,236,.6)}
.flow-notes{display:grid;gap:26px;margin-top:44px}
@media (min-width:860px){.flow-notes{grid-template-columns:repeat(3,1fr)}}
.note h4{font-size:.98rem;font-weight:600;color:#f3f5ee;margin-bottom:8px}
.note h4::before{content:'';display:block;width:26px;height:2px;background:var(--volt);margin-bottom:12px}
.note p{font-size:.9rem;color:rgba(240,243,236,.62)}
.note b{color:#f3f5ee;font-weight:600}
.flow-shots{display:grid;gap:22px;margin-top:48px}
@media (min-width:980px){.flow-shots{grid-template-columns:repeat(2,1fr);align-items:start}}
.flow-shots .shot{margin-top:0}

/* ====================================================================
   04 · START
   ==================================================================== */
.counters{display:grid;gap:1px;background:var(--rule);border:1px solid var(--rule);margin-bottom:46px}
@media (min-width:640px){.counters{grid-template-columns:repeat(3,1fr)}}
@media (min-width:1040px){.counters{grid-template-columns:repeat(5,1fr)}}
.counters li{background:var(--paper);padding:22px 18px}
.counters b{display:block;font-family:var(--m);font-size:clamp(1.9rem,3.4vw,2.7rem);font-weight:700;
  letter-spacing:-.04em;color:var(--ink);line-height:1}
.counters span{display:block;margin-top:9px;font-size:.78rem;color:var(--ink-3)}
.split{display:grid;gap:34px}
@media (min-width:860px){.split{grid-template-columns:repeat(2,1fr);gap:54px}}
.split-t{display:block;font-size:.64rem;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-3);
  padding-bottom:10px;border-bottom:1px solid var(--ink);margin-bottom:18px}
.knowhow{display:grid;gap:30px;margin-top:54px;padding-top:40px;border-top:1px solid var(--rule)}
@media (min-width:980px){.knowhow{grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);align-items:center;gap:48px}}
.knowhow h3{font-size:clamp(1.4rem,2.6vw,2rem);font-weight:600;letter-spacing:-.03em;color:var(--ink);margin-bottom:14px}
.knowhow p{max-width:52ch}
.knowhow .shot{margin-top:0}

/* ====================================================================
   05 · SYSTEM
   ==================================================================== */
.tiles{display:grid;gap:1px;background:var(--rule);border:1px solid var(--rule)}
@media (min-width:720px){.tiles{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1040px){.tiles{grid-template-columns:repeat(3,1fr)}}
.tile{background:var(--paper-2);padding:26px 22px 28px;transition:background .25s}
.tile:hover{background:#fff}
@media (min-width:1040px){.tile--wide{grid-column:span 3}}
.tile h3{font-size:1.06rem;font-weight:600;letter-spacing:-.015em;color:var(--ink);margin-bottom:9px}
.tile p{font-size:.92rem;max-width:56ch}
.logos{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:16px}
.logos .int-logo{height:18px;width:auto;opacity:.62;filter:grayscale(1);transition:opacity .25s,filter .25s}
.tile:hover .int-logo{opacity:1;filter:grayscale(0)}
.shots-row{display:grid;gap:22px;margin-top:46px}
@media (min-width:980px){.shots-row{grid-template-columns:repeat(2,1fr);align-items:start}}
.shots-row .shot{margin-top:0}

/* ====================================================================
   06 · PLANY
   ==================================================================== */
.plans{display:grid;gap:1px;background:var(--rule);border:1px solid var(--ink)}
@media (min-width:860px){.plans{grid-template-columns:repeat(3,1fr)}}
.plan{background:var(--paper-2);padding:28px 24px 30px;display:flex;flex-direction:column}
.plan--free{background:var(--ink);color:rgba(240,243,236,.7)}
.plan-tag{display:inline-block;align-self:flex-start;font-size:.6rem;letter-spacing:.16em;text-transform:uppercase;
  background:var(--volt);color:var(--ink);padding:4px 9px;border-radius:2px;margin-bottom:14px}
.plan-name{display:block;font-size:.76rem;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-3);font-family:var(--m)}
.plan--free .plan-name{color:rgba(240,243,236,.6)}
.plan-price{font-family:var(--m);font-size:clamp(2rem,3.4vw,2.6rem);font-weight:700;letter-spacing:-.04em;
  color:var(--ink);margin:10px 0 4px;line-height:1}
.plan--free .plan-price{color:var(--volt)}
.plan-price small{font-family:var(--f);font-size:.9rem;font-weight:400;letter-spacing:0;color:var(--ink-3)}
.plan-for{font-size:.9rem;min-height:2.8em}
.plan-list{margin:20px 0 24px;display:flex;flex-direction:column;gap:9px;flex:1}
.plan-list li{position:relative;padding-left:20px;font-size:.9rem}
.plan-list li::before{content:'';position:absolute;left:0;top:.52em;width:10px;height:1px;background:currentColor;opacity:.6}
.plan-list li.off{opacity:.42;text-decoration:line-through}
.plan--free .btn{background:var(--volt);color:var(--ink)}
.plan--free .btn:hover{background:#d8ff63}
.plans-note{margin-top:16px;font-size:.66rem;letter-spacing:.1em;color:var(--ink-3)}

.promo{display:grid;gap:28px;margin-top:44px;padding:clamp(24px,3.4vw,38px);border:1px solid var(--ink);
  background:var(--paper-2);border-radius:3px}
@media (min-width:900px){.promo{grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:44px;align-items:center}}
.promo-tag{display:inline-block;font-size:.6rem;letter-spacing:.18em;text-transform:uppercase;
  border:1px solid var(--ink);border-radius:2px;padding:4px 9px;color:var(--ink);margin-bottom:14px}
.promo h3{font-size:clamp(1.3rem,2.4vw,1.85rem);font-weight:600;letter-spacing:-.03em;color:var(--ink);margin-bottom:12px}
.promo-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.promo-list li{font-family:var(--m);font-size:.68rem;letter-spacing:.06em;color:var(--ink-2);
  border:1px solid var(--rule-2);border-radius:2px;padding:5px 10px;background:#fff}
.promo-price{text-align:left}
.pp-was{font-size:.82rem;color:var(--ink-3);text-decoration:line-through}
.pp-now{font-size:clamp(1.7rem,3vw,2.3rem);font-weight:600;letter-spacing:-.04em;color:var(--ink);margin:4px 0 16px}
.pp-note{margin-top:14px;font-size:.72rem;color:var(--ink-3);max-width:40ch}

/* ====================================================================
   07 · FAQ
   ==================================================================== */
.faq{border-top:1px solid var(--ink)}
.faq details{border-bottom:1px solid var(--rule)}
.faq summary{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;
  padding:20px 0;cursor:pointer;list-style:none;
  font-size:clamp(1rem,1.6vw,1.16rem);font-weight:600;letter-spacing:-.015em;color:var(--ink);
  transition:color .2s}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:#000}
.faq-p{position:relative;flex:0 0 14px;width:14px;height:14px;margin-top:.42em}
.faq-p::before,.faq-p::after{content:'';position:absolute;left:0;top:6px;width:14px;height:2px;background:var(--ink);
  transition:transform .3s var(--e)}
.faq-p::after{transform:rotate(90deg)}
.faq details[open] .faq-p::after{transform:rotate(0)}
.faq-a{padding:0 0 22px;max-width:74ch}
.faq-a p{font-size:.98rem}
.faq-a b{color:var(--ink)}
.faq-a a{border-bottom:1px solid var(--rule-2)}
.faq details[open] .faq-a{animation:faqin .32s var(--e) both}
@keyframes faqin{from{opacity:0;translate:0 -6px}to{opacity:1;translate:0 0}}

/* ====================================================================
   FINAŁ
   ==================================================================== */
.ark--end{padding-bottom:0}
.end-wrap{padding-bottom:clamp(70px,9vw,120px)}
.end-wrap .h-end{margin-top:18px}
.foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  width:min(100% - 40px,var(--wrap));margin-inline:auto;
  padding:22px 0;border-top:1px solid rgba(240,243,236,.16);
  font-size:.74rem;color:rgba(240,243,236,.45)}
.foot nav{display:flex;flex-wrap:wrap;gap:20px}
.foot a{transition:color .2s}
.foot a:hover{color:#f3f5ee}

/* ---------- Podgląd zrzutu (lightbox) ---------- */
/* Kadry stoją na stronie w skali, w której drobny druk jest nieczytelny, a `contain`
   dokłada białe pasy — dlatego klik otwiera oryginał. Kursor zapowiada to wprost. */
.shot-img{cursor:zoom-in}
.lbx{position:fixed;inset:0;z-index:200;display:flex;align-items:center;justify-content:center;
  padding:clamp(14px,3vw,40px);background:rgba(8,12,10,.9);
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
  opacity:0;pointer-events:none;transition:opacity .22s var(--e)}
.lbx.is-on{opacity:1;pointer-events:auto}
.lbx-fig{display:flex;flex-direction:column;gap:14px;max-width:100%;max-height:100%;cursor:zoom-out}
.lbx-fig img{max-width:min(1600px,100%);max-height:calc(100vh - 150px);width:auto;height:auto;
  object-fit:contain;background:#fff;border-radius:3px;box-shadow:0 30px 80px -20px rgba(0,0,0,.7)}
.lbx-cap{max-width:86ch;margin-inline:auto;text-align:center;font-size:.8rem;line-height:1.5;
  color:rgba(240,243,236,.7)}
.lbx-close{position:absolute;top:clamp(10px,2vw,22px);right:clamp(10px,2vw,22px);
  display:flex;align-items:center;justify-content:center;width:42px;height:42px;
  font-size:1.6rem;line-height:1;color:var(--paper);background:rgba(8,12,10,.55);
  border:1px solid rgba(240,243,236,.3);border-radius:2px;transition:background .2s,color .2s,border-color .2s}
.lbx-close:hover{background:var(--volt);color:var(--ink);border-color:var(--volt)}
.lbx-close:focus-visible{outline:2px solid var(--volt);outline-offset:2px}
body.lbx-open{overflow:hidden}

/* ====================================================================
   Odsłony
   ==================================================================== */
.js-art [data-rv]{opacity:0;translate:0 16px}
.js-art .ark.is-on [data-rv]{opacity:1;translate:0 0;
  transition:opacity .6s var(--e) var(--d,0s),translate .6s var(--e) var(--d,0s)}
.js-art .h1,.js-art .h2,.js-art .h-end{opacity:0;translate:0 18px}
.js-art .ark.is-on .h1,.js-art .ark.is-on .h2,.js-art .ark.is-on .h-end{opacity:1;translate:0 0;
  transition:opacity .7s var(--e),translate .7s var(--e)}

@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-art [data-rv],.js-art .h1,.js-art .h2,.js-art .h-end{opacity:1;translate:0 0}
  .hl{background-size:100% 100%}
  .ark--flow .hl,.ark--end .hl{background-size:100% 2px}
}