/* CASIDORA website — monochrome ink-and-paper design system */
:root {
  color-scheme: light;
  --bg: #f1f1f1;
  --paper: #fafafa;
  --surface: #ffffff;
  --soft: #f8f8f8;
  --ink: #171717;
  --secondary: #626262;
  --muted: #858585;
  --line: #dedede;
  --line-strong: #cfcfcf;
  --button-ink: #111111;
  --button-text: #ffffff;
  --focus: #111111;
  --dark-surface: #111111;
  --dark-text: #ffffff;
  --dark-muted: #b7b7b7;
  --dark-copy: #b7b7b7;
  --inverse-button: #ffffff;
  --inverse-button-text: #111111;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --page: 1120px;
  font-family: var(--sans);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #101010;
  --paper: #202020;
  --surface: #1b1b1b;
  --soft: #242424;
  --ink: #f4f4f4;
  --secondary: #b7b7b7;
  --muted: #909090;
  --line: #363636;
  --line-strong: #505050;
  --button-ink: #f3f3f3;
  --button-text: #111111;
  --focus: #ffffff;
  --dark-surface: #1b1b1b;
  --dark-text: #f4f4f4;
  --dark-muted: #909090;
  --dark-copy: #b7b7b7;
  --inverse-button: #f3f3f3;
  --inverse-button-text: #111111;
}
@media (prefers-color-scheme: dark) {
  :root[data-theme="system"] {
    color-scheme: dark;
    --bg: #101010;
    --paper: #202020;
    --surface: #1b1b1b;
    --soft: #242424;
    --ink: #f4f4f4;
    --secondary: #b7b7b7;
    --muted: #909090;
    --line: #363636;
    --line-strong: #505050;
    --button-ink: #f3f3f3;
    --button-text: #111111;
    --focus: #ffffff;
    --dark-surface: #1b1b1b;
    --dark-text: #f4f4f4;
    --dark-muted: #909090;
    --dark-copy: #b7b7b7;
    --inverse-button: #f3f3f3;
    --inverse-button-text: #111111;
  }
}
* { box-sizing: border-box; scrollbar-width: thin; scrollbar-color: var(--muted) transparent; }
*::-webkit-scrollbar { width: 5px; height: 5px; }
*::-webkit-scrollbar-track { background: transparent; }
*::-webkit-scrollbar-thumb { background: var(--muted); border-radius: 999px; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body { overflow-x: clip; margin: 0; background: var(--bg); color: var(--ink); font-family: var(--sans); font-size: 15px; line-height: 1.6; transition: background-color .2s ease, color .2s ease; }
main, section, header, footer { min-width: 0; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; }
svg { display: block; }
img { max-width: 100%; }
h1, h2, h3, p { margin-top: 0; }
button:focus-visible, a:focus-visible, summary:focus-visible { outline: 2px solid var(--focus); outline-offset: 4px; }
::selection { background: var(--ink); color: var(--bg); }
.page-width { width: min(calc(100% - 64px), var(--page)); margin-inline: auto; }
.skip-link { position: absolute; left: 16px; top: -60px; z-index: 60; padding: 10px 14px; background: var(--ink); color: var(--bg); border-radius: 8px; }
.skip-link:focus { top: 12px; }
.site-header { min-height: 70px; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--line); background: var(--bg); position: sticky; top: 0; z-index: 30; backdrop-filter: blur(12px); }
.header-inner { min-height: 70px; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 24px; }
.brand { display: inline-flex; width: fit-content; align-items: center; gap: 9px; color: var(--ink); font-size: 17px; font-weight: 720; letter-spacing: -.045em; }
.brand-mark { display: grid; width: 29px; height: 29px; place-items: center; overflow: hidden; border-radius: 8px; background: #111; }
.brand-mark img { width: 25px; height: 25px; object-fit: contain; }
.nav-links { display: flex; align-items: center; gap: 23px; color: var(--muted); font-size: 11px; font-weight: 580; }
.nav-links a, .header-link, .back-top, .text-link { transition: color .16s ease, border-color .16s ease; }
.nav-links a:hover, .header-link:hover, .back-top:hover, .text-link:hover { color: var(--ink); }
.header-actions { display: flex; align-items: center; justify-content: flex-end; gap: 11px; }
.theme-toggle { width: 38px; height: 38px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 50%; color: var(--ink); background: var(--surface); cursor: pointer; }
.theme-toggle svg { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 1.4; stroke-linecap: round; stroke-linejoin: round; }
.moon-icon { display: none; }
:root[data-theme="dark"] .sun-icon { display: none; }
:root[data-theme="dark"] .moon-icon { display: block; }
@media (prefers-color-scheme: dark) {
  :root[data-theme="system"] .sun-icon { display: none; }
  :root[data-theme="system"] .moon-icon { display: block; }
}
.header-link { display: inline-flex; align-items: center; gap: 13px; padding: 9px 14px; border: 1px solid var(--line-strong); border-radius: 999px; font-size: 11px; font-weight: 650; }
.menu-toggle { display: none; width: 40px; height: 38px; padding: 9px; background: transparent; color: var(--ink); border: 1px solid var(--line); border-radius: 9px; cursor: pointer; }
.menu-toggle span { display: block; width: 100%; height: 1px; margin: 5px 0; background: currentColor; transition: transform .18s ease; }
.menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(3px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3px) rotate(-45deg); }
.eyebrow, .section-label, .visual-heading, .micro-label, .footer-code, .hero-meta, .fact-item strong, .feature-number, .feature-tag, .directory-index, .directory-title p, .workspace-index, .step-number, .example-card > span, .license-note, .footer-bottom, .install-panel-top, .install-status { font-family: var(--mono); }
.hero { min-height: 680px; display: grid; grid-template-columns: minmax(0, .88fr) minmax(0, 1.12fr); gap: clamp(28px, 4.5vw, 56px); align-items: center; padding-top: 78px; padding-bottom: 88px; }
.hero-copy { max-width: 500px; }
.eyebrow { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: 9px; letter-spacing: .12em; text-transform: uppercase; margin-bottom: 25px; }
.eyebrow-rule, .section-line { width: 25px; height: 1px; background: var(--muted); flex: 0 0 auto; }
h1 { text-wrap: balance; max-width: 580px; margin: 0 0 23px; font-size: clamp(48px, 5.6vw, 76px); line-height: .98; letter-spacing: -.072em; font-weight: 560; }
h1 span, .section-intro h2 span { color: var(--muted); }
.hero-lede { max-width: 430px; color: var(--muted); font-size: 15px; line-height: 1.75; margin-bottom: 27px; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 20px; }
.button { min-height: 45px; display: inline-flex; justify-content: center; align-items: center; gap: 18px; padding: 0 18px; border: 1px solid var(--button-ink); border-radius: 999px; font-size: 11px; font-weight: 660; transition: background-color .16s ease, color .16s ease, border-color .16s ease, transform .16s ease; }
.button:active { transform: translateY(1px); }
.button-primary { background: var(--button-ink); border-color: var(--button-ink); color: var(--button-text); }
.button-primary:hover { opacity: .86; }
.text-link { display: inline-flex; align-items: center; gap: 9px; font-size: 11px; font-weight: 670; color: var(--muted); }
.hero-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; color: var(--muted); font-size: 8px; margin-top: 31px; letter-spacing: .02em; }
.hero-meta i { width: 3px; height: 3px; border-radius: 50%; background: var(--muted); }
.hero-visual { min-width: 0; width: 100%; }
.visual-heading { display: flex; align-items: center; gap: 11px; margin-bottom: 13px; color: var(--muted); font-size: 8px; letter-spacing: .05em; }
.visual-heading-line { flex: 1; height: 1px; background: var(--line); }
.browser-preview { overflow: hidden; border: 1px solid var(--line-strong); border-radius: 16px; background: var(--surface); box-shadow: 0 24px 70px rgba(0,0,0,.075); }
.browser-topbar { height: 33px; display: flex; align-items: center; gap: 12px; padding: 0 12px; border-bottom: 1px solid var(--line); background: var(--soft); }
.window-controls { display: flex; gap: 4px; }
.window-controls i { width: 6px; height: 6px; display: block; border-radius: 50%; background: var(--line-strong); }
.browser-tab { height: 24px; min-width: 105px; display: flex; align-items: center; gap: 7px; padding: 0 10px; border-radius: 7px 7px 0 0; background: var(--surface); color: var(--secondary); font-size: 9px; }
.mini-mark, .preview-mark { width: 15px; height: 15px; display: inline-grid; place-items: center; border-radius: 4px; background: var(--ink); color: var(--bg); font-size: 10px; font-weight: 800; }
.browser-menu { margin-left: auto; color: var(--muted); letter-spacing: 2px; }
.calculator-preview { padding: 15px; }
.preview-topline { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.preview-brand { display: flex; align-items: center; gap: 7px; }
.preview-brand strong { font-size: 11px; letter-spacing: -.03em; }
.preview-brand small { margin-left: 4px; color: var(--muted); font: 7px var(--mono); letter-spacing: .1em; }
.preview-tools { display: flex; align-items: center; gap: 6px; }
.preview-tools > span { min-width: 30px; padding: 4px 7px; border: 1px solid var(--line); border-radius: 7px; color: var(--secondary); text-align: center; font: 8px var(--mono); }
.preview-theme { font-size: 12px !important; }
.workspace-preview { display: grid; grid-template-columns: minmax(0, .75fr) minmax(0, 1fr); gap: 10px; align-items: stretch; }
.preview-keypad { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 5px; padding: 8px; border: 1px solid var(--line); border-radius: 10px; background: var(--soft); }
.preview-keypad button { height: 31px; border: 1px solid var(--line); border-radius: 6px; background: var(--surface); color: var(--secondary); font-size: 10px; font-weight: 620; }
.preview-keypad .preview-equals { background: var(--ink); border-color: var(--ink); color: var(--bg); }
.preview-right { display: grid; grid-template-rows: auto 1fr; gap: 7px; min-width: 0; }
.preview-display { padding: 10px 11px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); }
.display-label { display: flex; justify-content: space-between; color: var(--muted); font: 7px var(--mono); letter-spacing: .1em; }
.preview-display code { display: block; min-height: 27px; margin-top: 5px; overflow-wrap: anywhere; color: var(--ink); font: 10px/1.5 var(--mono); }
.display-divider { height: 1px; margin: 3px 0 7px; background: var(--line); }
.ready-dot::before { content: ""; display: inline-block; width: 5px; height: 5px; margin-right: 4px; border-radius: 50%; background: var(--muted); }
.preview-display strong { display: block; padding-top: 5px; font: 19px/1.2 var(--mono); letter-spacing: -.05em; }
.preview-functions { padding: 8px 9px; border: 1px solid var(--line); border-radius: 10px; background: var(--soft); }
.preview-tabs { display: flex; gap: 12px; margin-bottom: 8px; color: var(--muted); font-size: 8px; }
.preview-tabs b { color: var(--ink); border-bottom: 1px solid var(--ink); }
.preview-function-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 4px; }
.preview-function-grid span { display: grid; min-height: 22px; place-items: center; border: 1px solid var(--line); border-radius: 5px; background: var(--surface); color: var(--secondary); font-size: 8px; }
.preview-registers { margin-top: 8px; padding: 8px 9px; border: 1px solid var(--line); border-radius: 9px; background: var(--soft); }
.register-title { display: flex; justify-content: space-between; align-items: center; gap: 8px; color: var(--muted); font: 7px var(--mono); letter-spacing: .06em; }
.register-title small { font: 6px var(--mono); letter-spacing: 0; }
.register-values { display: grid; grid-template-columns: repeat(10, minmax(0,1fr)); gap: 4px; margin-top: 7px; }
.register-values span { display: flex; justify-content: space-between; padding: 4px 4px; border: 1px solid var(--line); border-radius: 5px; color: var(--muted); font: 7px var(--mono); }
.register-values b { color: var(--ink); font-weight: 650; }
.demo-examples { display: flex; align-items: center; flex-wrap: wrap; gap: 6px; margin: 11px 0 0; }
.demo-examples > span { margin-right: 4px; color: var(--muted); font: 7px var(--mono); letter-spacing: .1em; }
.demo-chip { padding: 5px 9px; border: 1px solid var(--line); border-radius: 999px; background: transparent; color: var(--muted); font-size: 8px; cursor: pointer; }
.demo-chip:hover, .demo-chip.active { border-color: var(--ink); color: var(--ink); background: var(--surface); }
.visual-note { margin: 9px 0 0; color: var(--muted); font-size: 9px; line-height: 1.5; }
.visual-note span { padding-right: 4px; color: var(--ink); }
.fact-strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--surface); }
.fact-strip-inner { display: grid; grid-template-columns: repeat(4, 1fr); }
.fact-item { min-height: 104px; display: flex; flex-direction: column; justify-content: center; padding: 18px 24px; border-right: 1px solid var(--line); }
.fact-item:first-child { padding-left: 0; }
.fact-item:last-child { border-right: 0; }
.fact-item strong { color: var(--muted); font-size: 18px; font-weight: 500; letter-spacing: -.04em; }
.fact-item span { margin-top: 4px; font-size: 12px; font-weight: 650; }
.fact-item p { margin: 2px 0 0; color: var(--muted); font-size: 10px; }
.section { padding-top: 100px; padding-bottom: 105px; }
.section-label { display: flex; align-items: center; gap: 10px; margin-bottom: 19px; color: var(--muted); font-size: 9px; letter-spacing: .09em; text-transform: uppercase; }
.section-intro { margin-bottom: 43px; }
.two-column { display: grid; grid-template-columns: 1fr .75fr; gap: 55px; align-items: end; }
.section-intro h2, .examples-heading h2 { margin: 0; font-size: clamp(34px, 4vw, 50px); line-height: 1.05; letter-spacing: -.06em; font-weight: 550; text-wrap: balance; }
.section-intro > p { max-width: 450px; margin: 0 0 3px auto; color: var(--muted); font-size: 13px; line-height: 1.75; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 11px; }
.feature-card { position: relative; min-height: 245px; padding: 20px 20px 18px; border: 1px solid var(--line); border-radius: 13px; background: var(--surface); transition: border-color .18s ease, transform .18s ease; }
.feature-card:hover { transform: translateY(-2px); border-color: var(--line-strong); }
.feature-number { position: absolute; top: 19px; right: 19px; color: var(--muted); font-size: 8px; }
.feature-icon { width: 36px; height: 36px; display: grid; place-items: center; margin-bottom: 18px; border: 1px solid var(--line); border-radius: 10px; color: var(--ink); font: 14px var(--mono); }
.feature-card h3 { margin-bottom: 9px; font-size: 16px; font-weight: 650; letter-spacing: -.035em; }
.feature-card p { min-height: 69px; margin-bottom: 12px; color: var(--muted); font-size: 11px; line-height: 1.65; }
.feature-card > code { display: block; overflow-wrap: anywhere; color: var(--secondary); font: 9px/1.55 var(--mono); }
.feature-tag { display: inline-block; margin-top: 13px; color: var(--muted); font-size: 7px; letter-spacing: .08em; }
.section-rule { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--surface); }
.function-section { padding: 93px 0 96px; }
.function-section .section-intro { margin-bottom: 37px; }
.function-directory { border-top: 1px solid var(--line); }
.directory-row { display: grid; grid-template-columns: 45px 205px minmax(0,1fr); gap: 18px; padding: 22px 4px; border-bottom: 1px solid var(--line); }
.directory-index { padding-top: 3px; color: var(--muted); font-size: 11px; }
.directory-title h3 { margin: 0 0 3px; font-size: 13px; font-weight: 660; }
.directory-title p { margin: 0; color: var(--muted); font-size: 8px; }
.directory-content p { max-width: 690px; margin: 0 0 12px; color: var(--secondary); font-size: 11px; line-height: 1.7; }
.directory-content p code { font: 10px var(--mono); color: var(--ink); }
.token-list { display: flex; flex-wrap: wrap; gap: 6px; }
.token-list code { padding: 5px 8px; border: 1px solid var(--line); border-radius: 6px; background: var(--soft); color: var(--secondary); font: 8px var(--mono); }
.fine-print { max-width: 780px; margin: 19px 0 0; color: var(--muted); font-size: 10px; line-height: 1.65; }
.workspace-section { padding-top: 103px; padding-bottom: 102px; }
.workspace-section .section-intro { margin-bottom: 37px; }
.workspace-grid { display: grid; grid-template-columns: .83fr 1.17fr; gap: 13px; align-items: stretch; }
.workspace-card { overflow: hidden; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); }
.workspace-card-visual { min-height: 272px; padding: 17px; background: var(--soft); border-bottom: 1px solid var(--line); }
.mini-window-head { display: flex; align-items: center; gap: 5px; height: 17px; margin-bottom: 10px; }
.mini-window-head > span { width: 5px; height: 5px; border-radius: 50%; background: var(--line-strong); }
.mini-window-head b { margin-left: auto; color: var(--muted); font: 7px var(--mono); }
.mini-calc { width: min(225px, 100%); margin: 0 auto; padding: 13px; border: 1px solid var(--line-strong); border-radius: 12px; background: var(--bg); box-shadow: 0 10px 25px rgba(0,0,0,.04); }
.mini-calc-heading { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; font-size: 10px; }
.mini-calc-heading span { color: var(--muted); }
.mini-calc > small, .mini-result small, .full-mini-display small { display: block; color: var(--muted); font: 7px var(--mono); letter-spacing: .08em; }
.mini-calc > code { display: block; margin: 4px 0 8px; padding: 7px 8px; border: 1px solid var(--line); border-radius: 6px; background: var(--surface); font: 9px var(--mono); }
.mini-result { padding: 7px 8px; border: 1px solid var(--line); border-radius: 6px; background: var(--surface); }
.mini-result strong { display: block; margin-top: 4px; font: 18px var(--mono); }
.mini-keypad { display: grid; grid-template-columns: repeat(4,1fr); gap: 4px; margin-top: 9px; }
.mini-keypad i { display: grid; height: 23px; place-items: center; border: 1px solid var(--line); border-radius: 5px; background: var(--surface); color: var(--secondary); font: 9px var(--sans); font-style: normal; }
.workspace-card-copy { padding: 19px 21px 22px; }
.workspace-index { color: var(--muted); font-size: 8px; letter-spacing: .08em; }
.workspace-card-copy h3 { margin: 8px 0 6px; font-size: 18px; font-weight: 630; letter-spacing: -.04em; }
.workspace-card-copy p { max-width: 430px; margin: 0; color: var(--muted); font-size: 11px; line-height: 1.7; }
.full-visual { padding: 18px 18px 13px; }
.full-mini-head { display: flex; align-items: center; gap: 7px; margin-bottom: 12px; }
.full-mini-head b { font-size: 10px; }
.full-mini-head small { color: var(--muted); font: 6px var(--mono); letter-spacing: .1em; }
.full-badge { margin-left: auto; padding: 4px 7px; border: 1px solid var(--line); border-radius: 5px; color: var(--muted); font: 6px var(--mono); }
.full-mini-body { display: grid; grid-template-columns: .75fr 1fr; gap: 8px; }
.full-mini-pad { display: grid; grid-template-columns: repeat(4,1fr); gap: 4px; padding: 7px; border: 1px solid var(--line); border-radius: 9px; background: var(--bg); }
.full-mini-pad i { display: grid; min-height: 24px; place-items: center; border: 1px solid var(--line); border-radius: 5px; background: var(--surface); color: var(--secondary); font: 8px var(--sans); font-style: normal; }
.full-mini-pad i:last-child { background: var(--ink); color: var(--bg); }
.full-mini-side { display: grid; align-content: start; gap: 6px; min-width: 0; }
.full-mini-display { padding: 8px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); }
.full-mini-display code { display: block; margin: 5px 0; overflow-wrap: anywhere; font: 8px var(--mono); }
.full-mini-display b { display: block; margin-top: 2px; font: 16px var(--mono); }
.full-mini-tabs { display: flex; gap: 10px; color: var(--muted); font-size: 7px; }
.full-mini-tabs b { color: var(--ink); }
.full-mini-functions { display: grid; grid-template-columns: repeat(4,1fr); gap: 4px; }
.full-mini-functions i { padding: 5px 2px; border: 1px solid var(--line); border-radius: 5px; background: var(--surface); color: var(--secondary); text-align: center; font: 7px var(--sans); font-style: normal; }
.full-mini-memory { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; margin-top: 8px; padding: 7px 8px; border: 1px solid var(--line); border-radius: 7px; color: var(--muted); font: 6px var(--mono); }
.full-mini-memory span { color: var(--secondary); }
.norm-callout { display: grid; grid-template-columns: 47px 1fr auto; gap: 18px; align-items: center; margin-top: 13px; padding: 22px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
.norm-symbol { width: 40px; height: 40px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 10px; font: 19px var(--mono); }
.norm-callout h3 { margin: 6px 0 4px; font-size: 15px; }
.norm-callout p { max-width: 590px; margin: 0; color: var(--muted); font-size: 10px; line-height: 1.6; }
.norm-preview { display: grid; grid-template-columns: repeat(3, auto); gap: 6px; align-items: center; color: var(--muted); font: 7px var(--mono); }
.norm-preview span { grid-column: span 3; }
.norm-preview b { padding: 5px 6px; border: 1px solid var(--line); border-radius: 5px; color: var(--secondary); font-weight: 500; }
.steps-section { padding: 92px 0 94px; }
.steps-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: clamp(36px, 7vw, 100px); align-items: start; }
.steps-intro h2 { margin: 0 0 17px; font-size: clamp(36px, 4.2vw, 51px); line-height: 1.03; letter-spacing: -.06em; font-weight: 550; }
.steps-intro h2 em { color: var(--muted); font-weight: 450; }
.steps-intro > p { max-width: 370px; color: var(--muted); font-size: 12px; line-height: 1.75; }
.steps-list { border-top: 1px solid var(--line); }
.step-row { display: grid; grid-template-columns: 38px 1fr 42px; gap: 15px; align-items: center; min-height: 112px; border-bottom: 1px solid var(--line); }
.step-number { color: var(--muted); font-size: 10px; }
.step-copy h3 { margin: 0 0 4px; font-size: 14px; font-weight: 650; }
.step-copy p { max-width: 470px; margin: 0; color: var(--muted); font-size: 10px; line-height: 1.65; }
.step-icon { width: 36px; height: 36px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 10px; color: var(--secondary); font: 13px var(--mono); }
.examples-section { padding: 94px 0 100px; }
.examples-heading { display: flex; justify-content: space-between; align-items: end; gap: 30px; margin-bottom: 29px; }
.examples-heading h2 { font-size: clamp(30px, 3.6vw, 43px); }
.examples-heading p { max-width: 370px; margin: 0 0 3px; color: var(--muted); font-size: 11px; line-height: 1.7; }
.example-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; }
.example-card { min-height: 190px; padding: 19px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
.example-card > span { color: var(--muted); font-size: 8px; letter-spacing: .08em; }
.example-card h3 { margin: 13px 0 8px; font-size: 15px; }
.example-card code { display: block; min-height: 34px; overflow-wrap: anywhere; padding: 8px; border-radius: 6px; background: var(--soft); color: var(--secondary); font: 9px/1.5 var(--mono); }
.example-card p { margin: 9px 0 6px; color: var(--muted); font-size: 9px; }
.example-card strong { font: 15px var(--mono); }
.privacy-section { display: grid; grid-template-columns: .82fr 1.18fr; gap: 80px; align-items: center; padding-top: 100px; padding-bottom: 104px; }
.privacy-visual { min-height: 360px; position: relative; display: grid; place-items: center; overflow: hidden; }
.privacy-globe-canvas { display: block; width: min(100%, 370px); height: auto; aspect-ratio: 1; max-width: 100%; touch-action: pan-y; }
.privacy-globe-fallback { max-width: 260px; margin: 0; padding: 14px 17px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); color: var(--muted); text-align: center; font: 10px/1.6 var(--mono); }
.privacy-globe-note { margin-top: -5px; color: var(--muted); font-size: 10px !important; }
.privacy-copy h2 { margin: 0 0 19px; font-size: clamp(37px, 4.2vw, 53px); line-height: 1.02; letter-spacing: -.065em; font-weight: 550; }
.privacy-copy > p { max-width: 520px; color: var(--muted); font-size: 12px; line-height: 1.75; }
.privacy-caveat { display: flex; align-items: flex-start; gap: 10px; margin: 22px 0 19px; padding: 12px 13px; border: 1px solid var(--line); border-radius: 9px; background: var(--surface); font-size: 9px !important; }
.privacy-caveat > span:first-child { width: 17px; height: 17px; display: grid; flex: 0 0 auto; place-items: center; border: 1px solid var(--line-strong); border-radius: 50%; color: var(--secondary); font: 10px var(--mono); }
.install-section { padding: 82px 0 87px; background: #111; color: #f5f5f5; }
.install-inner { display: grid; grid-template-columns: 1fr .95fr; gap: 70px; align-items: center; }
.light-label { color: #a7a7a7; }
.light-label .section-line { background: #777; }
.install-copy h2 { margin: 0 0 18px; font-size: clamp(42px, 5.1vw, 61px); line-height: .99; letter-spacing: -.067em; font-weight: 540; }
.install-copy h2 em { color: #989898; font-weight: 450; }
.install-copy > p { max-width: 430px; margin: 0 0 26px; color: #b7b7b7; font-size: 12px; line-height: 1.75; }
.install-points { display: grid; gap: 9px; color: #b7b7b7; font-size: 10px; }
.install-points span { display: flex; gap: 12px; align-items: center; }
.install-points b { color: #777; font: 9px var(--mono); }
.install-panel { padding: 17px; border: 1px solid #424242; border-radius: 12px; background: #191919; }
.install-panel-top { display: flex; justify-content: space-between; color: #8a8a8a; font-size: 8px; letter-spacing: .09em; }
.command-line { display: flex; align-items: center; gap: 10px; margin: 14px 0 18px; padding: 12px 10px; border: 1px solid #3c3c3c; border-radius: 7px; background: #101010; }
.command-line > span { color: #8c8c8c; font: 11px var(--mono); }
.command-line code { flex: 1; min-width: 0; overflow-wrap: anywhere; color: #f4f4f4; font: 10px var(--mono); }
.command-line button { width: 29px; height: 29px; display: grid; place-items: center; border: 1px solid #444; border-radius: 6px; background: #242424; color: #ddd; cursor: pointer; }
.command-line button svg { width: 14px; fill: none; stroke: currentColor; stroke-width: 1.4; stroke-linecap: round; stroke-linejoin: round; }
.install-next { padding-top: 14px; border-top: 1px solid #3a3a3a; }
.install-next p { margin: 0 0 8px; color: #eee; font-size: 10px; }
.install-next ol { margin: 0; padding-left: 19px; color: #b7b7b7; font-size: 9px; line-height: 1.9; }
.install-next code { color: #f4f4f4; font: 9px var(--mono); }
.install-status { min-height: 18px; margin-top: 12px; color: #838383; font-size: 7px; }
/* Keep this section on the same theme-aware ink/paper palette as the rest of the page.
   The previous inverted colors made the heading appear white in light mode. */
.project-section { padding: 85px 0; background: var(--soft); color: var(--ink); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.project-inner { display: grid; grid-template-columns: .9fr 1.1fr; gap: 75px; align-items: start; }
.project-section .section-label { color: var(--muted); }
.project-section .section-line { background: var(--muted); }
.project-heading h2 { margin: 0; color: var(--ink); font-size: clamp(38px, 4.4vw, 54px); line-height: .99; letter-spacing: -.065em; font-weight: 540; }
.project-copy > p { max-width: 530px; color: var(--secondary); font-size: 12px; line-height: 1.75; }
.project-links { display: grid; grid-template-columns: repeat(2,1fr); gap: 0 20px; margin: 20px 0; border-top: 1px solid var(--line); }
.project-links a { display: flex; justify-content: space-between; gap: 10px; padding: 11px 0; border-bottom: 1px solid var(--line); color: var(--ink); font-size: 10px; }
.project-links a:hover { color: var(--muted); }
.license-note { max-width: 550px; margin: 18px 0 0 !important; color: var(--muted) !important; font-size: 8px !important; line-height: 1.6 !important; }
.faq-section { padding-top: 98px; padding-bottom: 100px; }
.faq-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 70px; align-items: start; }
.faq-layout h2 { margin: 0; font-size: clamp(37px, 4vw, 49px); line-height: 1.02; letter-spacing: -.065em; font-weight: 550; }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { position: relative; padding: 17px 30px 17px 0; list-style: none; cursor: pointer; font-size: 12px; font-weight: 630; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; position: absolute; right: 0; top: 14px; color: var(--muted); font: 17px var(--mono); }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { max-width: 570px; margin: -2px 0 18px; color: var(--muted); font-size: 10px; line-height: 1.75; }
.closing-section { padding-top: 0; padding-bottom: 75px; }
.closing-panel { padding: 48px 50px 53px; border-radius: 14px; background: #111; color: #f4f4f4; }
.closing-panel h2 { margin: 0 0 13px; font-size: clamp(38px, 4.8vw, 58px); line-height: .98; letter-spacing: -.065em; font-weight: 540; }
.closing-panel h2 em { color: #999; font-weight: 450; }
.closing-panel > p { max-width: 450px; margin: 0 0 22px; color: #b8b8b8; font-size: 11px; }
.button-inverted { background: #f2f2f2; border-color: #f2f2f2; color: #111; }
.button-inverted:hover { background: #ddd; border-color: #ddd; }
.site-footer { border-top: 1px solid var(--line); }
.footer-top { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.footer-brand { font-size: 15px; }
.footer-top > p { margin: 0; color: var(--muted); font-size: 10px; }
.back-top { color: var(--muted); font-size: 10px; }
.footer-bottom { min-height: 46px; display: flex; align-items: center; justify-content: space-between; gap: 15px; border-top: 1px solid var(--line); color: var(--muted); font-size: 8px; }
.footer-attribution a { text-decoration: underline; text-underline-offset: 3px; }
@media (max-width: 980px) {
  .header-inner { grid-template-columns: 1fr auto auto; }
  .nav-links { gap: 14px; }
  .hero { grid-template-columns: 1fr; gap: 42px; padding-top: 63px; }
  .hero-copy { max-width: 680px; }
  .hero-visual { max-width: 740px; margin-inline: auto; }
  .feature-grid { grid-template-columns: repeat(2,1fr); }
  .privacy-section { gap: 40px; }
  .install-inner { gap: 35px; }
}
@media (max-width: 760px) {
  .page-width { width: min(calc(100% - 38px), var(--page)); }
  .site-header, .header-inner { min-height: 64px; }
  .header-inner { grid-template-columns: 1fr auto auto; gap: 8px; }
  .menu-toggle { display: block; order: 2; }
  .header-actions { order: 3; gap: 7px; }
  .header-link { display: none; }
  .nav-links { display: none; position: absolute; top: 63px; left: 0; right: 0; padding: 13px 20px 17px; border-bottom: 1px solid var(--line); background: var(--bg); box-shadow: 0 16px 25px rgba(0,0,0,.05); }
  .nav-links.is-open { display: grid; gap: 0; }
  .nav-links a { padding: 11px 0; border-bottom: 1px solid var(--line); }
  .nav-links a:last-child { border-bottom: 0; }
  .hero { min-height: 0; padding-top: 58px; padding-bottom: 65px; }
  h1 { font-size: clamp(45px, 11vw, 65px); }
  .workspace-preview { grid-template-columns: minmax(0,.73fr) minmax(0,1fr); }
  .calculator-preview { padding: 10px; }
  .preview-keypad { gap: 3px; padding: 5px; }
  .preview-keypad button { height: 27px; font-size: 9px; }
  .register-title small { display: none; }
  .fact-strip-inner { grid-template-columns: repeat(2,1fr); }
  .fact-item { min-height: 90px; padding: 15px 18px; border-bottom: 1px solid var(--line); }
  .fact-item:first-child { padding-left: 18px; }
  .fact-item:nth-child(2) { border-right: 0; }
  .fact-item:nth-child(3), .fact-item:nth-child(4) { border-bottom: 0; }
  .section, .workspace-section { padding-top: 72px; padding-bottom: 75px; }
  .two-column { grid-template-columns: 1fr; gap: 15px; }
  .section-intro > p { margin: 0; }
  .feature-grid { gap: 8px; }
  .feature-card { min-height: 260px; padding: 16px; }
  .feature-card p { min-height: 95px; }
  .function-section, .steps-section { padding: 72px 0; }
  .directory-row { grid-template-columns: 26px 1fr; gap: 8px 12px; }
  .directory-content { grid-column: 2; }
  .workspace-grid { grid-template-columns: 1fr; }
  .workspace-card-visual { min-height: 250px; }
  .norm-callout { grid-template-columns: 43px 1fr; }
  .norm-preview { grid-column: 2; justify-content: start; }
  .steps-layout, .privacy-section, .install-inner, .project-inner, .faq-layout { grid-template-columns: 1fr; gap: 30px; }
  .privacy-section { padding-top: 70px; padding-bottom: 75px; }
  .privacy-visual { min-height: 260px; order: 2; }
  .install-section { padding: 68px 0; }
  .project-section { padding: 70px 0; }
  .faq-section { padding-top: 72px; padding-bottom: 76px; }
  .examples-section { padding-top: 72px; padding-bottom: 76px; }
  .examples-heading { display: block; }
  .examples-heading p { margin-top: 13px; }
  .example-grid { grid-template-columns: 1fr; }
  .example-card { min-height: 0; }
  .example-card code { min-height: 0; }
  .closing-panel { padding: 34px 25px 38px; }
}
@media (max-width: 480px) {
  .page-width { width: min(calc(100% - 30px), var(--page)); }
  .brand { font-size: 15px; }
  .brand-mark { width: 27px; height: 27px; }
  .theme-toggle { width: 35px; height: 35px; }
  .hero { padding-top: 45px; }
  .hero-actions { gap: 13px; }
  .button { min-height: 42px; padding-inline: 14px; }
  .hero-meta { gap: 7px; font-size: 7px; }
  .browser-preview { border-radius: 12px; }
  .calculator-preview { padding: 8px; }
  .preview-brand small { display: none; }
  .workspace-preview { gap: 5px; grid-template-columns: minmax(0,.68fr) minmax(0,1fr); }
  .preview-keypad button { height: 25px; font-size: 8px; }
  .preview-display { padding: 7px; }
  .preview-display code { font-size: 8px; }
  .preview-display strong { font-size: 15px; }
  .preview-functions { padding: 6px; }
  .preview-tabs { gap: 8px; font-size: 7px; }
  .preview-function-grid span { min-height: 19px; font-size: 7px; }
  .register-values { gap: 2px; }
  .register-values span { padding: 3px 2px; font-size: 6px; }
  .fact-item { padding-inline: 12px; }
  .fact-item:first-child { padding-left: 12px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card { min-height: 0; }
  .feature-card p { min-height: 0; }
  .feature-card > code { margin-bottom: 3px; }
  .norm-callout { padding: 15px; gap: 12px; }
  .full-mini-head small { display: none; }
  .full-mini-body { grid-template-columns: .72fr 1fr; }
  .full-mini-pad i { min-height: 21px; }
  .register-title { font-size: 6px; }
  .register-values span { font-size: 6px; }
  .step-row { grid-template-columns: 25px 1fr 34px; gap: 9px; }
  .step-icon { width: 31px; height: 31px; }
  .install-panel { padding: 13px; }
  .project-links { grid-template-columns: 1fr; }
  .footer-top { flex-wrap: wrap; padding-block: 13px; }
  .footer-top > p { order: 3; flex-basis: 100%; }
  .footer-bottom { align-items: flex-start; flex-direction: column; justify-content: center; padding-block: 12px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}