/* Marketing stylesheet for apps/web/app — a standalone subset of the BoardUI
   semantics adopted in apps/desktop/src/ui/styles/app.css. No framework.

   The layout language follows the General Intelligence Company reference: a
   display serif at weight 400 with tight tracking, a quiet sans for everything
   utilitarian, hairline borders, 8/12/16/24px radii, a frosted navigation pill
   and border-only actions. Reference token roles are noted in comments; every
   colour value below is one this page already used. */
:root {
  /* Colours — names and values unchanged. */
  --background-full: #fff;                  /* canvas / paper */
  --background-primary-default: #fafafa;    /* linen — cards, quiet bands */
  --background-secondary-default: #f5f5f5;  /* recessed wash */
  --separator-border: #e5e5e5;              /* mist — the hairline */
  --text-primary: #0a0a0a;                  /* ink black — headlines */
  --text-secondary: #737373;                /* ash — muted helper text */
  --text-readable: #525252;                 /* charcoal — body copy */
  --button-primary-default-start: #3b82f6;
  --button-primary-default-end: #2563eb;    /* signal blue — outlined actions */
  --primary-hover: #1d4ed8;
  --radius: .05rem;
  --art-outline: #737373;
  --art-fill: #fafafa;
  --art-shade: #e5e5e5;
  --art-detail: #d4d4d4;
  --focus-ring: #2563eb;

  /* Typography — families */
  --font-display: 'Fraunces', 'Iowan Old Style', Georgia, 'Times New Roman', serif;
  --font-sans: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;

  /* Typography — scale */
  --text-caption: .8125rem;
  --text-body-sm: .9375rem;
  --text-body: 1rem;
  --text-subheading: 1.125rem;
  --text-heading-sm: 1.6875rem;
  --text-heading: 2.5rem;
  --text-display: 3.375rem;

  /* Spacing — 4px base */
  --spacing-4: .25rem;
  --spacing-8: .5rem;
  --spacing-12: .75rem;
  --spacing-16: 1rem;
  --spacing-20: 1.25rem;
  --spacing-24: 1.5rem;
  --spacing-32: 2rem;
  --spacing-40: 2.5rem;
  --spacing-48: 3rem;
  --spacing-64: 4rem;
  --spacing-80: 5rem;

  /* Border radius */
  --radius-md: 4px;
  --radius-lg: 8px;
  --radius-xl: 12px;
  --radius-2xl: 16px;
  --radius-3xl: 24px;
  --radius-nav: 50px;

  /* Elevation */
  --shadow-sm: 0 2px 6px rgba(0, 0, 0, .15);
  --shadow-subtle: 0 1px 1px rgba(0, 0, 0, .08), 0 4px 5px rgba(0, 0, 0, .08);
  --shadow-sm-2: 0 1px 8px rgba(0, 0, 0, .05);
  --shadow-modal: 0 2px 4px rgba(0, 0, 0, .04), 0 12px 32px rgba(0, 0, 0, .12);

  /* Layout */
  --page-max-width: 64rem;

  /* Hero band */
  --hero-band-top: #779bc1;
  --hero-band-mid: #9abfda;
  --hero-band-end: #cbdfec;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-block-start: 6rem; }
body { margin: 0; background: var(--background-full); color: var(--text-primary); font-family: var(--font-sans); font-size: var(--text-body); line-height: 1.5; letter-spacing: -.01em; font-variant-numeric: tabular-nums; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
.mx-auto { margin-inline: auto; }
h1, h2, h3, p { margin: 0; }
h1, h2, h3 { font-family: var(--font-display); font-weight: 400; font-feature-settings: "liga" 0; font-optical-sizing: auto; text-wrap: balance; }
h1 { font-size: clamp(2.25rem, 3.6vw, var(--text-display)); line-height: 1.1; letter-spacing: -.02em; }
h2, .section-heading h3 { font-size: clamp(1.75rem, 2.4vw, 2.25rem); line-height: 1.1; letter-spacing: -.02em; margin-block: var(--spacing-12) var(--spacing-16); }
em, .serif { font-style: normal; color: var(--text-secondary); }
.eyebrow { color: var(--text-secondary); font-size: var(--text-caption); font-weight: 600; line-height: 1.3; letter-spacing: .06em; }

/* Frosted navigation pill */
.site-header {
  position: fixed;
  inset-block-start: var(--spacing-16);
  inset-inline-start: 50%;
  translate: -50% 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: var(--spacing-12);
  inline-size: max-content;
  max-inline-size: calc(100% - var(--spacing-32));
  min-block-size: 2.5rem;
  padding: var(--spacing-4) var(--spacing-16) var(--spacing-4) var(--spacing-16);
  background: rgba(255, 255, 255, .72);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border: 1px solid var(--separator-border);
  border-radius: var(--radius-nav);
  box-shadow: var(--shadow-sm);
}
.brand { display: inline-flex; align-items: center; gap: var(--spacing-8); font-size: 1rem; font-weight: 600; letter-spacing: -.02em; }
.brand-icon { display: block; inline-size: 1.75rem; block-size: 1.75rem; border-radius: var(--radius); object-fit: cover; }
.site-header nav { display: flex; gap: var(--spacing-4); }
.site-header nav a { padding: var(--spacing-8) var(--spacing-12); border-radius: var(--radius-lg); color: var(--text-readable); font-size: var(--text-body-sm); font-weight: 500; line-height: 1; }
.site-header nav a:hover { background: var(--background-secondary-default); color: var(--text-primary); }
.site-header .button { background: var(--background-full); }

/* Border-only actions */
.button { display: inline-flex; justify-content: center; align-items: center; gap: var(--spacing-8); min-block-size: 1.75rem; padding: .375rem var(--spacing-12); border: 1px solid var(--button-primary-default-end); border-radius: var(--radius-lg); background: transparent; color: var(--button-primary-default-end); font-weight: 500; font-size: .875rem; line-height: 1; letter-spacing: -.01em; transition: border-color .15s ease, color .15s ease, background-color .15s ease; }
.button:hover { border-color: var(--primary-hover); color: var(--primary-hover); }
.button-secondary { border-color: var(--text-primary); color: var(--text-primary); }
.button-secondary:hover { background: var(--background-secondary-default); border-color: var(--text-primary); color: var(--text-primary); }
.button-small { min-block-size: 1.625rem; padding: .375rem .625rem; font-size: .8125rem; }
.btn-glyph { display: grid; place-items: center; inline-size: 1.125rem; block-size: 1.125rem; border: 1px solid currentColor; border-radius: 50%; font-size: .625rem; line-height: 1; padding-block-start: 1px; }

.container-5xl { inline-size: calc(100% - var(--spacing-64)); max-inline-size: var(--page-max-width); }

/* Hero */
.hero-band { position: relative; overflow: hidden; background: linear-gradient(var(--hero-band-top) 0%, var(--hero-band-mid) 58%, var(--hero-band-end) 100%); color: var(--background-full); }
.hero { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: center; justify-content: flex-start; text-align: center; min-block-size: 100dvh; padding-block: 8rem 2rem; }
.hero>h1 { margin-block: var(--spacing-12) var(--spacing-16); }
.intro { font-size: var(--text-body); line-height: 1.6; color: rgb(255 255 255 / .92); max-inline-size: 46ch; }
.actions { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--spacing-8); margin-block-start: var(--spacing-24); }
.hero-band .serif { color: inherit; }
.hero-band .eyebrow { color: rgb(255 255 255 / .88); }
.hero-band .button { background: var(--background-full); border: 0; padding-inline: var(--spacing-16); color: var(--button-primary-default-end); }
.hero-band .button:hover { background: var(--background-primary-default); color: var(--primary-hover); }
.hero-band .button-secondary { background: transparent; border: 1px solid var(--background-full); color: var(--background-full); }
.hero-band .button-secondary:hover { background: rgb(255 255 255 / .12); border-color: var(--background-full); color: var(--background-full); }
.illustration { min-inline-size: 0; overflow: hidden; }
.illustration svg { display: block; inline-size: 100%; block-size: 100%; }
.hairline-art { display: block; inline-size: 100%; block-size: 100%; object-fit: contain; padding: 0; }
.illustration[data-figure] { display: grid; place-items: center; container-type: size; padding: 0; background: var(--background-full); }
.illustration .figure-stage { inline-size: min(100cqw, 125cqh, 25rem); aspect-ratio: 5 / 4; }
.illustration .figure-stage svg { inline-size: 100%; block-size: 100%; }
.figure-read { position: absolute; inset: auto var(--spacing-16) var(--spacing-12) auto; color: var(--text-secondary); font: .625rem/1 ui-monospace, monospace; pointer-events: none; }

/* Every illustration sits in the same card: hairline, 24px, soft elevation. */
.scene, .local-art, .closing-art { position: relative; background: var(--background-primary-default); border: 1px solid var(--separator-border); border-radius: var(--radius-3xl); box-shadow: var(--shadow-subtle); overflow: hidden; }
/* Keep the computer in the content flow, a comfortable gap below the actions. */
.hero-decor.illustration { position: relative; flex-shrink: 0; inline-size: 100%; block-size: 320px; margin-block-start: 5.5rem; background: transparent; pointer-events: none; }
.hero-decor .figure-stage { pointer-events: auto; }
.hero-decor .figure-read { display: none; }

/* Page layout */
.page-layout { display: grid; grid-template-columns: minmax(14rem, 1fr) minmax(0, 42rem) minmax(14rem, 1fr); align-items: start; inline-size: 100%; }
.feature-content { grid-column: 2; inline-size: 100%; max-inline-size: 42rem; margin-inline: auto; }
.section-sidebar { --sidebar-accent: #8000ff; grid-column: 1; grid-row: 1; align-self: start; position: sticky; inset-block-start: 6rem; inline-size: 14rem; padding: var(--spacing-48) var(--spacing-24); }
.section-sidebar nav { position: relative; display: grid; }
.section-sidebar nav::before { content: ""; position: absolute; inset-inline-start: 0; inset-block: 13px; inline-size: 24px; background: repeating-linear-gradient(to bottom, var(--art-detail) 0 1px, transparent 1px 9px); pointer-events: none; }
.section-sidebar a { position: relative; display: flex; align-items: center; min-block-size: 27px; padding-inline-start: 36px; color: var(--text-secondary); font-size: .75rem; line-height: 1.5; }
.section-sidebar a::before { content: ""; position: absolute; inset-inline-start: 0; inset-block-start: 13px; inline-size: 24px; block-size: 1px; background: var(--art-detail); }
.section-sidebar a:hover { color: var(--sidebar-accent); }
.section-sidebar a[aria-current] { padding-inline-start: 52px; color: var(--sidebar-accent); }
.section-sidebar a[aria-current]::before { inline-size: 40px; background: var(--sidebar-accent); }
main, .feature-content { min-inline-size: 0; }
.section { inline-size: 100%; border-block-end: 1px solid var(--separator-border); }

/* Feature sections */
.features-intro { padding-block: var(--spacing-80) var(--spacing-32); }
.features-intro h2 { font-size: clamp(2rem, 3vw, 2.75rem); }
.features-intro p { color: var(--text-readable); font-size: var(--text-body); line-height: 1.6; }
.feature { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: var(--spacing-24) var(--spacing-40); align-items: center; padding-block: var(--spacing-48); }
.section-heading { min-inline-size: 0; }
.section-heading p, .local>p, .closing>p { color: var(--text-readable); font-size: var(--text-body); line-height: 1.6; }
.scene { display: grid; place-items: center; block-size: 18rem; padding: var(--spacing-16); }
.section-foot { grid-column: 1 / -1; display: flex; flex-wrap: wrap; align-items: center; gap: var(--spacing-8) var(--spacing-16); color: var(--text-secondary); font-size: var(--text-caption); line-height: 1.3; }
.pill { color: var(--text-readable); font-weight: 600; letter-spacing: .06em; }
.tiny-star { display: none; }

/* Local-first band */
.local { display: grid; grid-template-columns: minmax(0, 1fr); justify-items: center; text-align: center; gap: var(--spacing-16); padding: var(--spacing-48) var(--spacing-32); max-inline-size: 42rem; margin-block: var(--spacing-32); border: 0; background: var(--background-secondary-default); border-radius: var(--radius-3xl); }
.local>.eyebrow, .local>h2, .local>p, .local-note { grid-column: 1; }
.local-art { grid-column: 1; grid-row: 1; inline-size: min(100%, 22rem); block-size: 15rem; align-self: center; padding: var(--spacing-16); }
.local-note { font-size: var(--text-caption); font-weight: 500; letter-spacing: .06em; color: var(--text-secondary); margin-block-start: var(--spacing-16); }
.status-dot { display: inline-block; inline-size: .375rem; block-size: .375rem; border-radius: 50%; background: var(--text-secondary); margin-inline-end: var(--spacing-8); }

/* Closing */
.closing { display: flex; flex-direction: column; align-items: center; text-align: center; padding-block: var(--spacing-80); border: 0; }
.closing .closing-art { inline-size: min(100%, 18rem); block-size: 12rem; flex-shrink: 0; margin-block-end: var(--spacing-16); padding: 0; border: 0; box-shadow: none; }
.closing>p { max-inline-size: 40ch; }
.closing .actions { justify-content: center; }

/* Footer */
footer { display: block; padding-block: var(--spacing-32); border-block-start: 1px solid var(--separator-border); }
.footer-meta { display: flex; justify-content: space-between; gap: var(--spacing-16) var(--spacing-32); flex-wrap: wrap; align-items: center; }
.footer-meta>span { color: var(--text-secondary); font-size: var(--text-caption); }

:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: 3px; }
.skip { position: absolute; inset-block-start: var(--spacing-8); inset-inline-start: var(--spacing-8); padding: var(--spacing-12) var(--spacing-16); background: var(--background-full); border: 1px solid var(--separator-border); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); transform: translateY(-200%); z-index: 30; }
.skip:focus { transform: none; }

/* Dialog */
dialog { inline-size: min(30rem, calc(100% - var(--spacing-32))); max-block-size: calc(100dvh - var(--spacing-32)); overflow: auto; border: 1px solid var(--separator-border); border-radius: var(--radius-2xl); padding: var(--spacing-40) var(--spacing-32) var(--spacing-32); color: var(--text-primary); background: var(--background-full); box-shadow: var(--shadow-modal); }
dialog::backdrop { background: rgb(0 0 0 / .35); }
dialog p { color: var(--text-readable); }
#dialog-title { margin-block: var(--spacing-12) var(--spacing-8); font-size: var(--text-heading-sm); }
.dialog-close { position: absolute; inset-block-start: var(--spacing-16); inset-inline-end: var(--spacing-16); display: grid; place-items: center; inline-size: 2rem; block-size: 2rem; padding: 0; background: var(--background-full); border: 1px solid var(--separator-border); border-radius: 50%; font-size: 1.125rem; line-height: 1; color: var(--text-readable); }
.dialog-close:hover { background: var(--background-secondary-default); color: var(--text-primary); }
.dialog-note { margin-block-start: var(--spacing-24); font-size: var(--text-caption); }

@media(max-width:70rem) {
  .page-layout { display: block; }
  .feature-content, .section-sidebar { inline-size: calc(100% - var(--spacing-32)); max-inline-size: 42rem; margin-inline: auto; }
  .section-sidebar { position: static; padding: var(--spacing-16) 0; border-block-end: 1px solid var(--separator-border); }
  .section-sidebar nav { display: flex; flex-wrap: wrap; gap: 0 var(--spacing-24); }
  .section-sidebar nav::before { display: none; }
  .section-sidebar a, .section-sidebar a[aria-current] { min-block-size: 2.75rem; padding-inline-start: 28px; }
  .section-sidebar a::before { inset-block-start: 50%; inline-size: 16px; }
  .section-sidebar a[aria-current]::before { inline-size: 20px; }
}
@media(max-width:48rem) {
  .container-5xl { inline-size: calc(100% - var(--spacing-32)); }
  .site-header { inset-block-start: var(--spacing-12); gap: var(--spacing-8); padding-inline-start: var(--spacing-16); max-inline-size: calc(100% - var(--spacing-24)); }
  .site-header nav { display: none; }
  .section-sidebar { display: none; }
  .section-sidebar a { font-size: var(--text-caption); }
  .hero { padding-block: 6.5rem 1.5rem; }
  .hero-decor.illustration { block-size: 260px; margin-block-start: 3.85rem; }
  .hero>h1 { margin-block: var(--spacing-12) var(--spacing-16); }
  .feature, .local, .closing { grid-template-columns: minmax(0, 1fr); padding-block: var(--spacing-32); gap: var(--spacing-16); }
  .closing { padding-block: var(--spacing-48); gap: 0; }
  .local { padding: var(--spacing-24); margin-block: var(--spacing-24); }
  .scene { block-size: auto; aspect-ratio: 1.5; padding: var(--spacing-16); }
  .section-foot { display: grid; }
  .desktop-break { display: none; }
  .local-art { grid-column: 1; grid-row: auto; block-size: 14rem; }
  .local-note { margin-block-start: 0; }
  .closing .closing-art { block-size: 10rem; }
  footer { padding-block: var(--spacing-24); }
  .footer-meta>span:nth-child(2) { display: none; }
}
@media(prefers-reduced-motion:reduce) {
  html { scroll-behavior: auto; }
}
@media(prefers-reduced-transparency:reduce) {
  .site-header { background: var(--background-full); -webkit-backdrop-filter: none; backdrop-filter: none; }
}