:root {
  color-scheme: dark;
  --bg: #080c0f;
  --surface: #151a1e;
  --surface-raised: #1b1f23;
  --ink: #dde2e5;
  --muted: #9da5aa;
  --accent: #00d7e2;
  --cyan: #45cdd8;
  --line: #323c43;
  --button: #00d7e2;
  --button-ink: #071018;
  --focus: #00d7e2;
  --glow: rgb(0 215 226 / 0.14);
  --shadow: 0 24px 70px rgb(0 0 0 / 0.17);
  --mono: ui-monospace, "Cascadia Code", Consolas, monospace;
}
@media (prefers-color-scheme: light) {
  :root {
    color-scheme: light;
    --bg: #f3f5fa;
    --surface: #ffffff;
    --surface-raised: #e9eef8;
    --ink: #15243b;
    --muted: #455872;
    --accent: #087e86;
    --cyan: #126c72;
    --line: #c5cede;
    --button: #087e86;
    --button-ink: #ffffff;
    --focus: #17655f;
    --glow: rgb(56 102 236 / 0.09);
    --shadow: 0 24px 70px rgb(42 64 98 / 0.08);
  }
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-padding-top: 108px; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 1rem/1.65 "Segoe UI Variable", "Segoe UI", system-ui, sans-serif; }
[hidden] { display: none !important; }
img { max-width: 100%; height: auto; }
a { color: var(--accent); text-underline-offset: 0.22em; }
a:hover { text-decoration-thickness: 2px; }
button { font: inherit; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 5px; border-radius: 4px; }
:target { scroll-margin-top: 108px; }
main:focus { outline: none; }
h1, h2, h3, p, figure { margin: 0; }
h1, h2, h3 { line-height: 1.16; }
h2 { font-size: clamp(1.95rem, 3.2vw, 3.15rem); font-weight: 650; letter-spacing: -0.04em; text-wrap: balance; }
h3 { font-size: 1.18rem; font-weight: 650; letter-spacing: -0.018em; }
p { text-wrap: pretty; }
code { font: 0.9em/1.5 var(--mono); overflow-wrap: anywhere; color: var(--accent); }
.container { width: min(1240px, calc(100% - 64px)); margin-inline: auto; }
.mono { font-family: var(--mono); }
.small-text { font-size: 0.88rem; color: var(--muted); }
.skip-link { position: fixed; top: 12px; left: 20px; z-index: 100; transform: translateY(-160%); padding: 10px 16px; color: var(--button-ink); background: var(--button); border-radius: 8px; }
.skip-link:focus { transform: translateY(0); }
.site-header { position: sticky; top: 0; z-index: 20; background: var(--bg); border-bottom: 1px solid var(--line); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 88px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 700; font-size: 1.15rem; line-height: 1.3; flex-shrink: 0; }
.brand img { object-fit: contain; }
.brand-version { display: block; margin-top: 2px; font: 0.7rem/1.5 var(--mono); font-weight: 400; color: var(--muted); }
.section-nav { display: flex; gap: 20px; align-items: center; }
.section-nav a { display: block; padding-block: 10px; color: var(--muted); font-size: 0.88rem; text-decoration: none; border-bottom: 2px solid transparent; }
.section-nav a:hover, .section-nav a[aria-current="location"] { color: var(--ink); border-color: var(--accent); }
.header-download { display: inline-flex; align-items: center; gap: 14px; padding: 9px 18px; border: 1px solid var(--line); border-radius: 8px; text-decoration: none; color: var(--ink); font-size: 0.9rem; font-weight: 600; }
.hero { display: grid; grid-template-columns: 1.1fr 0.9fr; align-items: center; gap: clamp(32px, 5vw, 70px); padding-block: clamp(60px, 7vw, 106px) 80px; }
.eyebrow { display: flex; align-items: center; flex-wrap: wrap; gap: 9px; color: var(--accent); font: 0.75rem/1.6 var(--mono); letter-spacing: 0.05em; }
.status-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--cyan); flex-shrink: 0; }
h1 { margin-top: 24px; font-size: clamp(2.15rem, 4vw, 3.6rem); letter-spacing: -0.055em; font-weight: 650; }
.version-label { display: inline-block; vertical-align: middle; padding: 5px 9px; border: 1px solid var(--line); border-radius: 6px; color: var(--muted); font: 0.85rem/1.5 var(--mono); letter-spacing: 0; }
.hero-title-line { display: block; margin-top: 14px; color: var(--accent); font-size: clamp(2.7rem, 5.1vw, 4.65rem); line-height: 1.04; }
.lead { margin-top: 26px; max-width: 53ch; font-size: clamp(1rem, 1.4vw, 1.14rem); color: var(--muted); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 26px; min-height: 50px; padding: 12px 21px; border: 1px solid transparent; border-radius: 8px; font-size: 0.95rem; font-weight: 650; text-decoration: none; }
.button-primary { background: var(--button); color: var(--button-ink); }
.button-primary:hover { box-shadow: 0 0 0 3px var(--glow); }
.button-secondary { border-color: var(--line); background: var(--surface); color: var(--ink); }
.button-secondary:hover, .header-download:hover { border-color: var(--accent); }
.download-note { max-width: 52ch; margin-top: 17px; font-size: 0.8rem; color: var(--muted); }
.hero-facts { display: flex; flex-wrap: wrap; gap: 10px 22px; list-style: none; margin: 28px 0 0; padding: 22px 0 0; border-top: 1px solid var(--line); color: var(--muted); font-size: 0.8rem; }
.hero-facts li::before { content: "↳"; margin-right: 7px; color: var(--cyan); }
.session-map { position: relative; isolation: isolate; padding: 22px; border: 1px solid var(--line); border-radius: 18px; background: radial-gradient(ellipse at 50% 24%, var(--glow), transparent 65%), var(--surface); box-shadow: var(--shadow); }
.map-topline { display: flex; justify-content: space-between; gap: 8px; color: var(--muted); font-size: 0.75rem; }
.map-topline > :first-child { text-transform: uppercase; letter-spacing: 0.12em; }
.logo-orbit { position: relative; display: grid; place-items: center; height: 235px; margin-block: 8px 14px; }
.logo-orbit img { position: relative; width: 188px; height: 188px; object-fit: contain; }
.orbit { position: absolute; width: 214px; height: 214px; border: 1px solid var(--line); border-radius: 50%; transform: rotate(-28deg) scaleY(0.8); }
.orbit-two { width: 285px; height: 285px; transform: rotate(28deg) scaleY(0.68); border-style: dashed; }
.orbit-one::before { content: ""; position: absolute; top: 24px; left: 24px; width: 7px; height: 7px; border-radius: 50%; background: var(--cyan); }
.map-phases { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; list-style: none; padding: 0; margin: 0; }
.map-phases li { display: flex; align-items: flex-start; gap: 10px; padding: 12px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); font-size: 0.85rem; line-height: 1.5; }
.phase-number { color: var(--cyan); font: 0.68rem/1.9 var(--mono); }
.map-phases strong { display: block; font-size: 0.69rem; font-weight: 400; color: var(--muted); }
.session-map figcaption { margin-top: 16px; text-align: center; color: var(--muted); font-size: 0.7rem; }
.project-strip { border-block: 1px solid var(--line); background: var(--surface); }
.strip-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding-block: 25px; }
.strip-inner p { color: var(--muted); font-size: 0.88rem; }
.strip-inner strong { color: var(--ink); font-weight: 500; }
.strip-inner > span { font: 0.74rem/1.7 var(--mono); color: var(--muted); }
.strip-inner > span::before { content: "/"; margin-right: 12px; color: var(--accent); }
.section { padding-block: 88px; }
.section-heading { max-width: 820px; margin-bottom: 36px; }
.section-heading h2 { margin-top: 14px; }
.section-heading > p:last-child:not(.eyebrow) { max-width: 68ch; margin-top: 18px; color: var(--muted); }
.module-grid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 16px; }
.module-card { grid-column: span 2; padding: 27px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
.module-wide { grid-column: span 3; }
.card-top { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; justify-content: space-between; margin-bottom: 27px; }
.module-number { color: var(--muted); font: 0.8rem/1.5 var(--mono); }
.tag { display: inline-block; padding: 4px 8px; border: 1px solid var(--line); border-radius: 5px; color: var(--accent); font: 0.65rem/1.5 var(--mono); }
.module-card h3 { margin-bottom: 14px; font-size: 1.25rem; }
.module-card p { color: var(--muted); font-size: 0.91rem; }
.module-card .card-detail { margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--line); font-size: 0.82rem; }
.session-section { background: var(--surface); border-block: 1px solid var(--line); }
.phase-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 28px; list-style: none; padding: 0; margin: 0; }
.phase-index { display: block; padding-bottom: 18px; border-bottom: 2px solid var(--line); color: var(--accent); font: 1.8rem/1.2 var(--mono); }
.phase-grid h3 { margin-top: 22px; }
.phase-grid p { margin-top: 12px; color: var(--muted); font-size: 0.9rem; }
.recovery-callout { display: flex; align-items: flex-start; gap: 22px; margin-top: 40px; padding: 28px; border: 1px solid var(--line); border-left: 3px solid var(--cyan); border-radius: 8px; background: var(--bg); }
.callout-mark { color: var(--cyan); font-size: 2rem; line-height: 1; }
.recovery-callout p { margin-top: 12px; max-width: 94ch; font-size: 0.9rem; color: var(--muted); }
.safety-grid { display: grid; grid-template-columns: 1fr 1.05fr; gap: 48px; align-items: start; }
.safety-list { list-style: none; padding: 0; margin: 0; }
.safety-list li { position: relative; padding: 0 0 24px 29px; }
.safety-list li::before { content: "+"; position: absolute; left: 0; color: var(--cyan); font: 1.05rem/1.65 var(--mono); }
.safety-list strong, .safety-list span { display: block; }
.safety-list strong { font-weight: 600; }
.safety-list span { margin-top: 7px; color: var(--muted); font-size: 0.91rem; }
.privacy-panel { padding: 30px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
.privacy-panel h3 { margin-top: 12px; font-size: 1.35rem; }
.privacy-panel p:not(.eyebrow) { margin-top: 17px; font-size: 0.9rem; color: var(--muted); }
.privacy-panel strong { color: var(--ink); font-weight: 600; }
.data-paths { margin-block: 22px; padding: 18px; border: 1px solid var(--line); border-radius: 7px; background: var(--bg); }
.data-paths dt { font-size: 0.74rem; color: var(--muted); }
.data-paths dd { margin: 3px 0 12px; font-size: 0.85rem; }
.data-paths dd:last-child { margin-bottom: 0; }
#instalacja { border-top: 1px solid var(--line); }
.install-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 48px; }
.install-panel { padding: 30px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
.install-panel > p { margin-top: 17px; color: var(--muted); }
.install-panel .button { margin-top: 24px; }
.release-status { margin-top: 22px; padding: 17px; border-left: 2px solid var(--accent); background: var(--bg); font-size: 0.88rem; }
.release-status p { margin-top: 7px; color: var(--muted); }
.install-steps { display: grid; gap: 25px; align-content: start; }
.install-steps article + article { padding-top: 23px; border-top: 1px solid var(--line); }
.step-label { color: var(--accent); font: 0.75rem/1.7 var(--mono); }
.install-steps h3 { margin-top: 9px; }
.install-steps p { margin-top: 12px; color: var(--muted); font-size: 0.94rem; }
.migration-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; margin-top: 32px; padding: 28px; border: 1px solid var(--line); border-radius: 12px; }
.migration-panel .eyebrow { margin-bottom: 9px; }
.migration-panel p:not(.eyebrow) { margin-top: 12px; color: var(--muted); font-size: 0.9rem; }
.channel-note { margin-top: 21px; color: var(--muted); font-size: 0.78rem; overflow-wrap: anywhere; }
.news-section { border-top: 1px solid var(--line); }
.news-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; }
.news-grid h3 { margin-top: 15px; }
.news-grid p { max-width: 57ch; margin-top: 12px; color: var(--muted); font-size: 0.94rem; }
.faq-section { border-top: 1px solid var(--line); }
.faq-list { max-width: 920px; }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list details:first-child { border-top: 1px solid var(--line); }
.faq-list summary { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 22px 4px; cursor: pointer; list-style: none; font-weight: 600; line-height: 1.5; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; flex-shrink: 0; color: var(--accent); font: 1.3rem/1 var(--mono); }
.faq-list details[open] summary::after { content: "−"; }
.faq-answer { padding: 0 36px 25px 4px; max-width: 84ch; color: var(--muted); font-size: 0.94rem; }
.faq-answer p + p { margin-top: 14px; }
.license-section { padding-top: 44px; }
.license-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; }
.license-grid article { padding-top: 20px; border-top: 1px solid var(--line); }
.license-name { display: block; margin-top: 8px; color: var(--accent); font: 0.75rem/1.6 var(--mono); }
.license-grid p { margin-top: 15px; color: var(--muted); font-size: 0.85rem; }
.site-footer { border-top: 1px solid var(--line); background: var(--surface); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 25px; padding-block: 32px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 12px 22px; }
.footer-links a { color: var(--muted); font-size: 0.8rem; }
.motion-toggle { display: inline-flex; align-items: center; gap: 9px; padding: 10px 13px; border: 1px solid var(--line); border-radius: 7px; background: var(--bg); color: var(--ink); cursor: pointer; font-size: 0.78rem; }
.toggle-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--muted); }
.motion-toggle[aria-pressed="true"] .toggle-dot { background: var(--cyan); }
.not-found { display: grid; align-content: center; justify-items: start; min-height: 75svh; max-width: 780px; padding-block: 80px; }
.not-found h1 { margin-block: 20px; }
.not-found .actions { margin-top: 28px; }
.not-found p:not(.eyebrow) { max-width: 55ch; color: var(--muted); }
/* Treść pozostaje widoczna bez JavaScriptu i bez efektów. */
html[data-motion="full"] { scroll-behavior: smooth; }
html[data-motion="full"] .orbit-one { animation: orbit-drift 16s ease-in-out infinite alternate; }
html[data-motion="full"] .orbit-two { animation: orbit-drift 22s ease-in-out infinite alternate-reverse; }
html[data-motion="full"] .button, html[data-motion="full"] .section-nav a { transition: border-color 160ms, box-shadow 160ms, color 160ms; }
html[data-paused="true"] .orbit { animation-play-state: paused; }
@keyframes orbit-drift { to { transform: rotate(40deg) scaleY(0.74); } }
@media (prefers-reduced-motion: reduce) {
  html[data-motion="full"] { scroll-behavior: auto; }
  html[data-motion="full"] .orbit { animation: none; }
  html[data-motion="full"] .button, html[data-motion="full"] .section-nav a { transition: none; }
}
@media (max-width: 1100px) {
  .header-inner { gap: 15px; }
  .section-nav { gap: 14px; }
  .section-nav a { font-size: 0.8rem; }
  .module-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .module-card, .module-wide { grid-column: auto; }
  .card-top { justify-content: flex-start; }
  .phase-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .safety-grid, .install-grid { gap: 30px; }
  .strip-inner > span { font-size: 0.66rem; }
}
@media (max-width: 800px) {
  html { scroll-padding-top: 146px; }
  :target { scroll-margin-top: 146px; }
  .container { width: calc(100% - 40px); }
  .header-inner { display: grid; grid-template-columns: 1fr auto; gap: 6px 16px; padding-top: 12px; }
  .section-nav { grid-column: 1 / -1; grid-row: 2; flex-wrap: wrap; justify-content: space-between; gap: 0 12px; }
  .section-nav a { min-height: 44px; }
  .header-download { padding: 7px 12px; }
  .hero { grid-template-columns: 1fr; gap: 36px; padding-block: 45px 52px; }
  .hero-copy { max-width: 620px; }
  .hero-title-line { font-size: clamp(3rem, 8vw, 4rem); }
  .session-map { max-width: 560px; width: 100%; }
  .logo-orbit { height: 205px; }
  .logo-orbit img { width: 164px; height: 164px; }
  .strip-inner { flex-wrap: wrap; gap: 12px 20px; }
  .strip-inner p { flex-basis: 100%; }
  .section { padding-block: 60px; }
  .safety-grid, .install-grid { grid-template-columns: 1fr; }
  .license-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-inner { align-items: flex-start; }
  .footer-links { flex-basis: 100%; }
}
@media (max-width: 520px) {
  .container { width: calc(100% - 36px); }
  .section-nav { gap: 0 9px; }
  .section-nav a { font-size: 0.7rem; }
  .hero .eyebrow { font-size: 0.66rem; letter-spacing: 0; }
  .hero-title-line { font-size: 2.85rem; }
  .actions { gap: 10px; }
  .button { gap: 14px; padding-inline: 15px; font-size: 0.85rem; }
  .hero-facts { gap: 8px 16px; }
  .session-map { padding: 17px; }
  .map-topline { font-size: 0.65rem; }
  .map-phases { gap: 8px; }
  .map-phases li { padding: 10px 8px; gap: 7px; font-size: 0.78rem; }
  .map-phases strong { font-size: 0.65rem; }
  .module-grid, .phase-grid, .migration-panel, .news-grid { grid-template-columns: 1fr; }
  .module-card, .privacy-panel, .install-panel { padding: 23px; }
  .phase-grid { gap: 30px; }
  .phase-grid h3 { margin-top: 16px; }
  .recovery-callout { padding: 22px; gap: 14px; }
  .callout-mark { font-size: 1.5rem; }
  .migration-panel { padding: 23px; gap: 26px; }
  .faq-list summary { padding-block: 19px; font-size: 0.94rem; }
  .faq-answer { padding-right: 8px; }
  .not-found h1 { font-size: 2.45rem; }
}

/* Rozszerzenia zachowują całą treść w podstawowym HTML. */
@view-transition { navigation: auto; }
.site-header { view-transition-name: dismode-header; }
.section-nav { gap: 14px; }
.section-nav a { font-size: .8rem; }
.hero { position: relative; isolation: isolate; }
.hero::before { content: ""; position: absolute; inset: 0 -2%; z-index: -2; background: radial-gradient(ellipse at 80% 40%, var(--glow), transparent 68%); pointer-events: none; }
.hero-canvas { display: none; position: absolute; inset: 0; z-index: -1; width: 100%; height: 100%; pointer-events: none; }
html[data-motion="full"][data-effects-ready="true"] .hero-canvas { display: block; }
.hero-copy, .session-map, .module-card { min-width: 0; }
.hero-ui { display: block; width: 100%; margin-block: 20px; border-radius: 8px; border: 1px solid var(--line); background: #080c0f; }
.gallery-note { max-width: 80ch; color: var(--muted); font-size: .85rem; margin: -10px 0 24px; }
.module-card { position: relative; isolation: isolate; overflow: hidden; border-radius: 11px; display: flex; flex-direction: column; }
.module-card .card-detail { margin-bottom: 22px; }
.ui-link { display: block; position: relative; margin-top: auto; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; background: #080c0f; }
.module-ui { width: 100%; display: block; aspect-ratio: 16 / 9; }
.ui-link-compact { aspect-ratio: 400 / 548; width: min(100%, 270px); align-self: center; }
.ui-link-compact .module-ui { position: absolute; width: 400%; max-width: none; left: 50%; top: 50%; transform: translate(-50%, -50%); }
.ui-link-hud { aspect-ratio: 344 / 152; }
.ui-link-hud .module-ui { position: absolute; width: 465.116%; max-width: none; left: -9.302%; top: -21.053%; }
.card-spotlight { position: absolute; width: 300px; height: 300px; top: 0; left: 0; border-radius: 50%; background: radial-gradient(circle, rgb(0 215 226 / .12), transparent 68%); z-index: -1; opacity: 0; pointer-events: none; }
@media (hover: hover) and (pointer: fine) {
  html[data-motion="full"][data-effects-ready="true"] .module-card:hover .card-spotlight { opacity: 1; }
  html[data-motion="full"][data-effects-ready="true"] .module-card:hover { border-color: var(--accent); }
}
.telemetry-demo { margin-top: 24px; padding: 16px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); }
.demo-readout { display: flex; justify-content: space-between; flex-wrap: wrap; color: var(--accent); gap: 12px; font: .65rem/1.6 var(--mono); }
.demo-readout strong { font-size: .9rem; font-variant-numeric: tabular-nums; }
.frametime-canvas, .frametime-static { width: 100%; aspect-ratio: 600 / 180; display: block; height: auto; margin-top: 12px; }
.frametime-canvas { display: none; }
html[data-motion="full"][data-effects-ready="true"] .demo-running .frametime-canvas { display: block; }
html[data-motion="full"][data-effects-ready="true"] .demo-running .frametime-static { display: none; }
.telemetry-demo figcaption, .recovery-demo figcaption { color: var(--muted); font-size: .72rem; margin-top: 12px; }
.phase-summary { margin-bottom: 14px; color: var(--muted); font-size: .86rem; }
.phase-summary strong { color: var(--accent); font: 1.6rem/1.4 var(--mono); font-variant-numeric: tabular-nums; }
.session-axis { width: 100%; height: 38px; display: block; margin-bottom: 18px; }
.phase-grid li.is-revealed .phase-index { border-color: var(--accent); }
.recovery-demo { padding: 24px; margin-top: 20px; border: 1px solid var(--line); border-radius: 11px; }
.recovery-demo svg { display: block; width: min(100%, 800px); margin: auto; font: 13px "Segoe UI", sans-serif; }
.recovery-signal { display: none; }
html[data-motion="full"][data-effects-ready="true"] .recovery-playing .recovery-signal { display: block; animation: recovery-signal 3.4s ease-in-out 1 both; }
html[data-motion="full"][data-effects-ready="true"] .recovery-playing .recovery-node { animation: recovery-node 3.4s ease-in-out 1; }
.recovery-node:nth-of-type(2) { animation-delay: .35s; }
.recovery-node:nth-of-type(3) { animation-delay: .7s; }
.checksum { display: block; padding-top: 16px; overflow-wrap: anywhere; font-size: .73rem; }
.release-status strong { overflow-wrap: anywhere; }
.step-controls { padding: 18px; background: var(--surface); border: 1px solid var(--line); border-radius: 11px; }
.step-controls p { font-size: .85rem; color: var(--muted); }
.step-buttons { display: flex; gap: 8px; margin-block: 13px; }
.step-buttons button { min-height: 44px; min-width: 44px; cursor: pointer; border: 1px solid var(--line); background: var(--bg); border-radius: 7px; color: var(--ink); }
.step-buttons button[aria-current] { color: var(--button-ink); background: var(--button); border-color: var(--button); }
.step-buttons button:disabled { opacity: .5; cursor: default; }
.step-controls progress { width: 100%; height: 5px; border: none; accent-color: var(--accent); }
.step-controls progress::-webkit-progress-bar { background: var(--line); border-radius: 4px; }
.step-controls progress::-webkit-progress-value { background: var(--accent); border-radius: 4px; }
.install-steps { view-transition-name: install-guide; }
.install-steps article { padding: 16px; border-left: 2px solid transparent; }
.install-steps article[data-active] { border-left-color: var(--accent); background: var(--glow); border-radius: 7px; }
html[data-motion="full"][data-effects-ready="true"] .hero-copy > * { animation: text-in 700ms cubic-bezier(.2,.7,.2,1) backwards; }
html[data-motion="full"][data-effects-ready="true"] .hero-copy .lead { animation-delay: 80ms; }
html[data-motion="full"][data-effects-ready="true"] .hero-copy .actions { animation-delay: 140ms; }
html[data-motion="full"][data-effects-ready="true"] .step-controls progress::-webkit-progress-value { transition: width 450ms ease; }
html[data-paused="true"] .recovery-demo * { animation-play-state: paused !important; }
@keyframes text-in { from { transform: translateY(14px); } to { transform: none; } }
@keyframes recovery-signal { 0%, 12% { transform: translateX(0); opacity: 0; } 20% { opacity: 1; } 50% { transform: translateX(330px); } 86%, 100% { transform: translateX(660px); opacity: 0; } }
@keyframes recovery-node { 45% { opacity: .55; } }
@keyframes reading-progress { from { transform: scaleX(0); } to { transform: scaleX(1); } }
/* IntersectionObserver jest fallbackiem reveal; scroll() dodaje pasek lektury. */
@supports (animation-timeline: scroll()) {
  html[data-motion="full"][data-effects-ready="true"] .site-header::after { content: ""; position: absolute; inset: auto 0 -1px; height: 2px; background: var(--accent); transform-origin: left; animation: reading-progress linear both; animation-timeline: scroll(root block); }
}
::view-transition-group(*), ::view-transition-old(*), ::view-transition-new(*) { animation: none; }
html[data-motion="full"]::view-transition-old(install-guide),
html[data-motion="full"]::view-transition-old(root) { animation: guide-out 160ms ease both; }
html[data-motion="full"]::view-transition-new(install-guide),
html[data-motion="full"]::view-transition-new(root) { animation: guide-in 240ms ease both; }
@keyframes guide-out { to { opacity: 0; transform: translateY(-6px); } }
@keyframes guide-in { from { opacity: 0; transform: translateY(6px); } }
html[data-motion="reduced"]::view-transition-group(*),
html[data-motion="reduced"]::view-transition-old(*),
html[data-motion="reduced"]::view-transition-new(*) { animation: none; }
@media (max-width: 1100px) {
  html { scroll-padding-top: 168px; }
  :target { scroll-margin-top: 168px; }
  .header-inner { display: grid; grid-template-columns: 1fr auto; padding-top: 12px; gap: 6px 14px; }
  .section-nav { grid-column: 1 / -1; grid-row: 2; flex-wrap: wrap; gap: 0 14px; justify-content: space-between; }
  .section-nav a { min-height: 44px; }
}
@media (max-width: 520px) {
  .section-nav { justify-content: flex-start; gap: 0 13px; }
  .section-nav a { font-size: .72rem; }
  .recovery-demo { padding: 12px; }
  .recovery-demo svg { min-height: 100px; }
  .recovery-demo svg text { font-size: 16px; }
  .phase-summary { font-size: .78rem; }
  .step-buttons { justify-content: space-between; gap: 4px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto !important; }
  .hero-canvas, .frametime-canvas { display: none !important; }
  .frametime-static { display: block !important; }
  .recovery-demo *, .hero-copy > *, .site-header::after { animation: none !important; }
  ::view-transition-group(*), ::view-transition-old(*), ::view-transition-new(*) { animation: none !important; }
}