/* World Economy — public site
 *
 * Design language: a deep neutral ground, warm off-white type, one amber accent
 * (the colour the game's own title row uses), cyan reserved for data and labels.
 * Sharp one-pixel borders, a faint grid, statistical typography for numbers.
 * No external fonts, no framework, works from file://.
 *
 * Sections: tokens · reset · type · layout · components · sections · responsive.
 */

/* ------------------------------------------------------------ tokens */
:root {
  /* colour */
  --color-background:      #0b0d12;
  --color-surface:         #11141b;
  --color-surface-raised:  #171b24;
  --color-surface-sunken:  #080a0e;
  --color-text:            #ecebe4;
  --color-text-muted:      #9ea1ab;
  --color-text-faint:      #5f636e;
  --color-border:          #262b36;
  --color-border-strong:   #3a4150;
  --color-primary:         #f0a83a;
  --color-primary-strong:  #ffc266;
  --color-primary-ink:     #1a1206;
  --color-secondary:       #5cc8ff;
  --color-positive:        #3ddc84;
  --color-warning:         #f0a83a;
  --color-negative:        #ff5c6c;
  --color-focus:           #ffd27a;

  /* type */
  --font-display: "Inter", "Segoe UI Variable Display", "Segoe UI", system-ui, -apple-system,
                  Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-body:    "Inter", "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue",
                  Arial, sans-serif;
  --font-mono:    ui-monospace, "Cascadia Mono", "SF Mono", Menlo, Consolas,
                  "DejaVu Sans Mono", "Liberation Mono", monospace;

  --text-display: clamp(2.5rem, 1.2rem + 4.2vw, 4.75rem);
  --text-h1:      clamp(1.9rem, 1.1rem + 2.2vw, 3rem);
  --text-h2:      clamp(1.4rem, 1rem + 1.2vw, 1.9rem);
  --text-h3:      1.125rem;
  --text-lead:    clamp(1.05rem, 0.95rem + 0.4vw, 1.25rem);
  --text-body:    1rem;
  --text-small:   0.8125rem;
  --text-label:   0.75rem;
  --text-data:    clamp(1.6rem, 1.2rem + 1.2vw, 2.4rem);

  --leading-tight: 1.05;
  --leading-snug:  1.25;
  --leading-body:  1.6;
  --tracking-label: 0.14em;

  /* space (4px base) */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;
  --space-10: 8rem;

  /* shape */
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 8px;
  --border: 1px solid var(--color-border);
  --border-strong: 1px solid var(--color-border-strong);

  /* layout */
  --container: 76rem;
  --gutter: clamp(1rem, 4vw, 2.5rem);
  --header-h: 4rem;

  /* motion */
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --dur: 160ms;

  color-scheme: dark;
}

/* ------------------------------------------------------------ reset */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 1rem); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--color-background);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
img { height: auto; }
p, h1, h2, h3, ul, ol, dl, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: var(--color-secondary); text-decoration-thickness: 1px; text-underline-offset: 0.15em; }
a:hover { color: var(--color-text); }
button { font: inherit; color: inherit; }

:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: var(--space-4); top: -100px;
  padding: var(--space-2) var(--space-4);
  background: var(--color-primary); color: var(--color-primary-ink);
  font-weight: 600; z-index: 100; border-radius: var(--radius-md);
}
.skip-link:focus { top: var(--space-2); }

/* ------------------------------------------------------------ type */
.display, .h1, .h2, h3 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
  text-wrap: balance;
}
.display { font-size: var(--text-display); line-height: var(--leading-tight); letter-spacing: -0.03em; }
.h1      { font-size: var(--text-h1); line-height: 1.12; }
.h2      { font-size: var(--text-h2); line-height: var(--leading-snug); }
h3       { font-size: var(--text-h3); line-height: 1.35; letter-spacing: -0.01em; }

.lead { font-size: var(--text-lead); line-height: 1.55; color: var(--color-text-muted); max-width: 38em; }
.eyebrow, .section__label, .chain__unit, .stat dt, .hero__facts dt, .action__index, .section__num,
.network__region-label, .network__labels text, .observed__title {
  font-family: var(--font-mono);
  font-size: var(--text-label);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.eyebrow { color: var(--color-primary); }
.data, .stat__value, .hero__facts dd { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

.note { color: var(--color-text-muted); max-width: 60em; border-left: 2px solid var(--color-primary); padding-left: var(--space-4); }
.note--small { font-size: var(--text-small); border-left-color: var(--color-border-strong); }

/* ------------------------------------------------------------ layout */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding-left: var(--gutter); padding-right: var(--gutter); }

.section { padding: var(--space-9) 0; border-top: var(--border); position: relative; }
.section--raised { background: var(--color-surface); }
.section__head { max-width: 46rem; margin-bottom: var(--space-7); }
.section__label { display: flex; gap: var(--space-3); align-items: baseline; margin-bottom: var(--space-4); color: var(--color-primary); }
.section__num { color: var(--color-text-faint); }
.section__intro { margin-top: var(--space-4); font-size: var(--text-lead); color: var(--color-text-muted); line-height: 1.55; }

/* ------------------------------------------------------------ buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  min-height: 2.75rem; padding: 0 var(--space-5);
  font-family: var(--font-display); font-weight: 600; font-size: 0.95rem; letter-spacing: 0.01em;
  text-decoration: none; border-radius: var(--radius-md); border: 1px solid transparent;
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease), transform var(--dur) var(--ease);
  white-space: nowrap;
}
.btn--primary { background: var(--color-primary); color: var(--color-primary-ink); border-color: var(--color-primary); }
.btn--primary:hover { background: var(--color-primary-strong); border-color: var(--color-primary-strong); color: var(--color-primary-ink); }
.btn--secondary { background: transparent; color: var(--color-text); border-color: var(--color-border-strong); }
.btn--secondary:hover { border-color: var(--color-text-muted); color: var(--color-text); }
.btn--ghost { background: transparent; color: var(--color-text-muted); border-color: transparent; padding-left: var(--space-3); padding-right: var(--space-3); }
.btn--ghost:hover { color: var(--color-text); }
.btn--ghost::after { content: "→"; color: var(--color-primary); }
.btn--small { min-height: 2.25rem; padding: 0 var(--space-4); font-size: var(--text-small); }
.btn:active { transform: translateY(1px); }

/* ------------------------------------------------------------ cards */
.card {
  background: var(--color-surface-raised); border: var(--border); border-radius: var(--radius-lg);
  padding: var(--space-5); position: relative;
}
.card::before {
  content: ""; position: absolute; left: var(--space-5); right: var(--space-5); top: 0; height: 2px;
  background: var(--color-primary); border-radius: 0 0 2px 2px; opacity: 0.85;
}
.card__title { margin-bottom: var(--space-3); }
.card p { color: var(--color-text-muted); }

/* ------------------------------------------------------------ header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--color-background) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: var(--border);
}
@supports not (color-mix(in srgb, red 50%, blue)) { .site-header { background: rgba(11, 13, 18, 0.94); } }
.site-header__row { display: flex; align-items: center; gap: var(--space-5); min-height: var(--header-h); }
.brand { display: inline-flex; align-items: center; gap: var(--space-3); text-decoration: none; color: var(--color-text); margin-right: auto; }
.brand__mark { color: var(--color-primary); flex: none; }
.brand__name { font-family: var(--font-display); font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; font-size: 0.95rem; }

.site-nav { display: flex; align-items: center; gap: var(--space-6); }
.site-nav__list { display: flex; gap: var(--space-5); }
.site-nav__list a {
  color: var(--color-text-muted); text-decoration: none; font-weight: 500; font-size: 0.95rem;
  padding: var(--space-2) 0; border-bottom: 1px solid transparent;
}
.site-nav__list a:hover { color: var(--color-text); border-bottom-color: var(--color-primary); }
.site-nav__actions { display: flex; align-items: center; gap: var(--space-4); }

.lang-switch { display: inline-flex; border: var(--border); border-radius: var(--radius-md); overflow: hidden; }
.lang-switch__btn {
  background: transparent; border: 0; padding: 0.35rem 0.6rem; cursor: pointer;
  font-family: var(--font-mono); font-size: var(--text-label); letter-spacing: 0.08em; color: var(--color-text-muted);
}
.lang-switch__btn + .lang-switch__btn { border-left: var(--border); }
.lang-switch__btn[aria-pressed="true"] { background: var(--color-surface-raised); color: var(--color-text); }
.lang-switch__btn:hover { color: var(--color-text); }
.no-js .lang-switch { display: none; }

.nav-toggle {
  display: none; width: 2.75rem; height: 2.75rem; padding: 0; background: transparent;
  border: var(--border); border-radius: var(--radius-md); cursor: pointer; position: relative;
}
.nav-toggle__bar, .nav-toggle__bar::before, .nav-toggle__bar::after {
  position: absolute; left: 50%; width: 1.25rem; height: 2px; background: var(--color-text); transform: translateX(-50%);
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.nav-toggle__bar { top: 50%; margin-top: -1px; }
.nav-toggle__bar::before, .nav-toggle__bar::after { content: ""; left: 0; transform: none; }
.nav-toggle__bar::before { top: -6px; }
.nav-toggle__bar::after { top: 6px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar::after { transform: translateY(-6px) rotate(-45deg); }

/* ------------------------------------------------------------ hero */
.hero { position: relative; padding: var(--space-9) 0 var(--space-8); overflow: hidden; }
.hero__grid {
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(to right, var(--color-border) 1px, transparent 1px),
    linear-gradient(to bottom, var(--color-border) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.35;
  -webkit-mask-image: radial-gradient(ellipse at 70% 40%, #000 30%, transparent 75%);
          mask-image: radial-gradient(ellipse at 70% 40%, #000 30%, transparent 75%);
}
.hero__inner { position: relative; display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: var(--space-8); align-items: center; }
.hero__copy .eyebrow { margin-bottom: var(--space-5); }
.hero__copy .display { max-width: 14ch; }
.hero__copy .lead { margin-top: var(--space-5); }
.hero__actions { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-6); }

.hero__facts { display: grid; grid-template-columns: repeat(4, auto); gap: var(--space-6); margin-top: var(--space-8); padding-top: var(--space-5); border-top: var(--border); width: max-content; max-width: 100%; }
.hero__facts div { display: flex; flex-direction: column-reverse; gap: var(--space-1); }
.hero__facts dd { font-size: 1.75rem; font-weight: 500; color: var(--color-text); line-height: 1; }
.hero__facts dt { white-space: nowrap; }

.hero__art { margin: 0; min-width: 0; }
.hero__copy { min-width: 0; }
.network { width: 100%; height: auto; }
.network__regions rect { fill: var(--color-surface); stroke: var(--color-border); stroke-dasharray: 3 4; }
.network__region-label { fill: var(--color-text-faint); font-size: 11px; }
.network__edges path { stroke: var(--color-border-strong); stroke-width: 1.5; }
.network__edge--flow { stroke: var(--color-primary) !important; stroke-dasharray: 4 6; }
.network__nodes circle { fill: var(--color-surface-raised); stroke: var(--color-border-strong); stroke-width: 1.5; }
.network__nodes text { fill: var(--color-text); font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em; text-anchor: middle; }
.network__node--primary circle { stroke: var(--color-primary); stroke-width: 2; fill: var(--color-surface-sunken); }
.network__node--primary text { fill: var(--color-primary); }
.network__node--demand circle { stroke-dasharray: 3 3; }
.network__node--demand text { fill: var(--color-text-muted); }
.network__labels text { fill: var(--color-text-faint); font-size: 10px; text-transform: none; letter-spacing: 0.04em; }
.network__caption { margin-top: var(--space-4); font-size: var(--text-small); color: var(--color-text-faint); line-height: 1.5; }

@media (prefers-reduced-motion: no-preference) {
  .network__edge--flow { animation: flow 1.6s linear infinite; }
  @keyframes flow { to { stroke-dashoffset: -20; } }
}

/* ------------------------------------------------------------ living economy */
.causal { position: relative; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: var(--space-5); counter-reset: step; }
.causal::before {
  content: ""; position: absolute; left: 0; right: 0; top: 0.55rem; height: 1px; background: var(--color-border-strong);
}
.causal__step { position: relative; padding-top: var(--space-6); counter-increment: step; }
.causal__step::before {
  content: ""; position: absolute; top: 0; left: 0; width: 1.1rem; height: 1.1rem; border-radius: 50%;
  background: var(--color-background); border: 2px solid var(--color-primary);
}
.causal__step--last::before { background: var(--color-primary); }
.causal__step h3 { font-size: 1.35rem; margin-bottom: var(--space-2); }
.causal__step p { color: var(--color-text-muted); font-size: 0.95rem; }

.pillars { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-4); margin-top: var(--space-8); }

/* ------------------------------------------------------------ game */
.actions { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; background: var(--color-border); border: var(--border); border-radius: var(--radius-lg); overflow: hidden; }
.action { background: var(--color-surface-raised); padding: var(--space-5); transition: background-color var(--dur) var(--ease); }
.action:hover { background: var(--color-surface); }
.action__index { display: block; color: var(--color-primary); margin-bottom: var(--space-5); }
.action h3 { margin-bottom: var(--space-2); }
.action p { color: var(--color-text-muted); font-size: 0.95rem; }
#game .note { margin-top: var(--space-7); }

/* ------------------------------------------------------------ world / chain */
.chain { display: grid; grid-template-columns: minmax(0, 8fr) minmax(0, 4fr); gap: var(--space-6); align-items: start; }
.chain__list { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--space-4); }
.chain__node {
  position: relative; background: var(--color-surface-raised); border: var(--border); border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-4) var(--space-5);
}
.chain__node:not(:last-child)::after {
  content: "→"; position: absolute; right: -0.95rem; top: 1.1rem; color: var(--color-primary);
  font-size: 1.1rem; line-height: 1; z-index: 1;
}
.chain__node--primary { border-color: var(--color-primary); background: var(--color-surface-sunken); }
.chain__unit { color: var(--color-secondary); text-transform: none; letter-spacing: 0.06em; margin-bottom: var(--space-4); }
.chain__node h3 { margin-bottom: var(--space-2); }
.chain__node p { color: var(--color-text-muted); font-size: 0.925rem; }

.chain__side { border-left: 2px solid var(--color-secondary); padding: var(--space-1) 0 var(--space-1) var(--space-5); }
.chain__side h3 { margin-bottom: var(--space-2); }
.chain__side p { color: var(--color-text-muted); font-size: 0.95rem; }

.systems { display: grid; grid-template-columns: repeat(auto-fit, minmax(20rem, 1fr)); gap: var(--space-4) var(--space-6); margin-top: var(--space-8); padding-top: var(--space-6); border-top: var(--border); }
.systems li { color: var(--color-text-muted); font-size: 0.95rem; }
.systems strong { color: var(--color-text); font-weight: 600; }

/* ------------------------------------------------------------ emergent */
.emergent { display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 6fr); gap: var(--space-8); align-items: start; }
.statements li {
  font-family: var(--font-display); font-weight: 700; letter-spacing: -0.02em;
  font-size: clamp(1.5rem, 1.1rem + 1.5vw, 2.25rem); line-height: 1.15;
  padding: var(--space-4) 0; border-bottom: var(--border); color: var(--color-text-muted);
}
.statements li:first-child { padding-top: 0; }
.statements li:last-child { color: var(--color-text); border-bottom: 0; }
.statements li:last-child::before { content: ""; display: inline-block; width: 0.5em; height: 0.5em; background: var(--color-primary); margin-right: 0.5em; vertical-align: 0.12em; }
.observed { background: var(--color-surface-raised); border: var(--border); border-radius: var(--radius-lg); padding: var(--space-5); }
.observed__title { color: var(--color-primary); margin-bottom: var(--space-4); }
.observed__list li { color: var(--color-text-muted); font-size: 0.95rem; padding: var(--space-3) 0; border-top: var(--border); }
.observed__list li:first-child { border-top: 0; padding-top: 0; }
.observed__list li:last-child { padding-bottom: 0; }

/* ------------------------------------------------------------ screenshots */
.shots { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-5); }
.shot { margin: 0; }
.shot--wide { grid-column: 1 / -1; }
.shot img {
  width: 100%; aspect-ratio: 16 / 9; object-fit: cover; object-position: top left;
  border: var(--border); border-radius: var(--radius-md); background: var(--color-surface-sunken);
}
.shot figcaption { margin-top: var(--space-3); font-size: var(--text-small); color: var(--color-text-muted); }
/* An intentional placeholder for a screenshot that does not exist yet: `<div class="shot--placeholder">DEV PLACEHOLDER</div>`. */
.shot--placeholder {
  aspect-ratio: 16 / 9; display: grid; place-items: center; border: 1px dashed var(--color-border-strong); border-radius: var(--radius-md);
  color: var(--color-text-faint); font-family: var(--font-mono); font-size: var(--text-label); letter-spacing: var(--tracking-label); text-transform: uppercase;
  background: repeating-linear-gradient(135deg, transparent 0 14px, var(--color-surface) 14px 16px);
}

/* ------------------------------------------------------------ development */
.dev { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: var(--space-8); align-items: start; }
.stats { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; background: var(--color-border); border: var(--border); border-radius: var(--radius-lg); overflow: hidden; }
.stat { background: var(--color-surface-raised); padding: var(--space-5); display: flex; flex-direction: column-reverse; gap: var(--space-2); }
.stat__value { font-size: var(--text-data); color: var(--color-text); line-height: 1; font-weight: 500; }
.stat__value--text { font-size: 1.1rem; line-height: 1.3; color: var(--color-primary); }
.dev__copy p { color: var(--color-text-muted); }
.dev__copy p + p { margin-top: var(--space-4); }
.dev__actions { margin-top: var(--space-6); }
.dev__copy .note { margin-top: var(--space-6); }

/* ------------------------------------------------------------ footer */
.site-footer { border-top: var(--border); padding: var(--space-7) 0 var(--space-8); background: var(--color-surface-sunken); }
.site-footer__row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: var(--space-5) var(--space-8); align-items: start; }
.site-footer__brand { display: flex; gap: var(--space-3); align-items: flex-start; }
.site-footer__name { font-family: var(--font-display); font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; font-size: 0.9rem; }
.site-footer__tag { color: var(--color-text-muted); font-size: var(--text-small); }
.site-footer__nav { display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-5); }
.site-footer__nav a { color: var(--color-text-muted); text-decoration: none; font-size: var(--text-small); }
.site-footer__nav a:hover { color: var(--color-text); }
.site-footer__fine { grid-column: 1 / -1; color: var(--color-text-faint); font-size: var(--text-label); font-family: var(--font-mono); letter-spacing: 0.04em; }

/* ------------------------------------------------------------ responsive */
@media (max-width: 64rem) { /* 1024 */
  .hero__inner { grid-template-columns: minmax(0, 1fr); gap: var(--space-7); }
  .hero__art { max-width: 34rem; }
  .causal { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-6) var(--space-5); }
  .causal::before { display: none; }
  .causal__step::before { left: 0; }
  .chain { grid-template-columns: 1fr; }
  .chain__list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .chain__node:nth-child(2)::after { display: none; }
  .dev { grid-template-columns: 1fr; gap: var(--space-6); }
  .emergent { grid-template-columns: 1fr; gap: var(--space-6); }
}

@media (max-width: 52rem) { /* 832: nav collapses */
  .js .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .js .site-nav {
    position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; align-items: stretch; gap: var(--space-4);
    padding: var(--space-4) var(--gutter) var(--space-5);
    background: var(--color-surface); border-bottom: var(--border);
  }
  .js .site-nav:not(.is-open) { display: none; }
  .js .site-nav__list { flex-direction: column; gap: 0; }
  .js .site-nav__list a { display: block; padding: var(--space-3) 0; border-bottom: var(--border); }
  .js .site-nav__actions { justify-content: space-between; }
  .no-js .site-header__row { flex-wrap: wrap; padding-bottom: var(--space-3); }
  .no-js .site-nav { flex-wrap: wrap; gap: var(--space-3) var(--space-5); }
  .no-js .site-nav__list { flex-wrap: wrap; gap: var(--space-2) var(--space-4); }
  .pillars { grid-template-columns: 1fr; }
  .actions { grid-template-columns: 1fr; }
  .shots { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .section { padding: var(--space-8) 0; }
  .section__head { margin-bottom: var(--space-6); }
}

@media (max-width: 36rem) { /* 576: phones */
  .hero { padding: var(--space-7) 0 var(--space-7); }
  .hero__copy .display { max-width: none; }
  .hero__facts { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-4) var(--space-6); width: auto; }
  .hero__facts dt { white-space: normal; }
  .hero__actions .btn { flex: 1 1 100%; }
  .causal { grid-template-columns: 1fr; gap: var(--space-5); }
  .causal::before { display: block; left: 0.5rem; right: auto; top: 0; bottom: 0; width: 1px; height: auto; }
  .causal__step { padding-top: 0; padding-left: var(--space-6); }
  .causal__step::before { top: 0.35rem; }
  .chain__list { grid-template-columns: 1fr; gap: var(--space-6); }
  .chain__node:not(:last-child)::after { content: "↓"; right: auto; left: var(--space-4); top: auto; bottom: -1.7rem; }
  .stats { grid-template-columns: 1fr; }
  .site-footer__row { grid-template-columns: 1fr; }
  .brand__name { font-size: 0.85rem; letter-spacing: 0.12em; }
}

/* ------------------------------------------------------------ public alpha (loop 118) */
.btn--large { min-height: 3.25rem; padding: 0 var(--space-7); font-size: 1.1rem; }
.hero__friction { margin-top: var(--space-4); color: var(--color-text); font-weight: 500; }
.hero__desktop { margin-top: var(--space-2); color: var(--color-text-faint); font-size: var(--text-small); }
.network__node--market circle { stroke: var(--color-primary); stroke-width: 2.5; fill: var(--color-surface-sunken); }
.network__node--market text { fill: var(--color-primary); }

.status { border-top: var(--border); background: var(--color-surface); }
.status__row { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-4) var(--space-7); padding: var(--space-4) var(--gutter); }
.status__badge {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-family: var(--font-mono); font-size: var(--text-label); letter-spacing: var(--tracking-label); text-transform: uppercase;
  color: var(--color-primary); border: 1px solid var(--color-primary); border-radius: 999px; padding: 0.35rem 0.8rem; white-space: nowrap;
}
.status__dot { width: 0.5rem; height: 0.5rem; border-radius: 50%; background: var(--color-primary); }
@media (prefers-reduced-motion: no-preference) { .status__dot { animation: pulse 2.4s ease-in-out infinite; } @keyframes pulse { 50% { opacity: 0.35; } } }
.status__list { display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-6); color: var(--color-text-muted); font-size: var(--text-small); }

.worlds { display: grid; grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); gap: var(--space-4); }
.world { background: var(--color-surface-raised); border: var(--border); border-radius: var(--radius-lg); padding: var(--space-5); display: flex; flex-direction: column; gap: var(--space-4); }
.world--preview { border-style: dashed; }
.world__name { font-family: var(--font-mono); font-size: var(--text-label); letter-spacing: var(--tracking-label); text-transform: uppercase; color: var(--color-primary); }
.world__facts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-3) var(--space-4); }
.world__facts div { display: flex; flex-direction: column-reverse; gap: 0.1rem; }
.world__facts dt { font-family: var(--font-mono); font-size: var(--text-label); letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-text-faint); }
.world__facts dd { font-family: var(--font-mono); font-variant-numeric: tabular-nums; font-size: 1.25rem; color: var(--color-text); }
.world__note { color: var(--color-text-faint); font-size: var(--text-small); }
.world__enter { align-self: flex-start; }

.dev__sub { margin-top: var(--space-7); margin-bottom: var(--space-2); }
.roadmap { margin-top: var(--space-8); padding-top: var(--space-6); border-top: var(--border); }
.roadmap__title { margin-bottom: var(--space-5); }
.roadmap__list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-5); }
.roadmap__step { border-left: 2px solid var(--color-border-strong); padding-left: var(--space-4); }
.roadmap__step--now { border-left-color: var(--color-primary); }
.roadmap__when { font-family: var(--font-mono); font-size: var(--text-label); letter-spacing: var(--tracking-label); text-transform: uppercase; color: var(--color-text-muted); margin-bottom: var(--space-2); }
.roadmap__step--now .roadmap__when { color: var(--color-primary); }
.roadmap__what { color: var(--color-text-muted); font-size: 0.95rem; }

.faq { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-5) var(--space-7); }
.faq__item dt { font-family: var(--font-display); font-weight: 700; letter-spacing: -0.01em; font-size: var(--text-h3); margin-bottom: var(--space-2); }
.faq__item dd { color: var(--color-text-muted); }
.faq__cta { margin-top: var(--space-8); display: flex; justify-content: center; }

@media (max-width: 52rem) {
  .roadmap__list { grid-template-columns: 1fr; }
  .faq { grid-template-columns: 1fr; }
  .status__list { flex-direction: column; gap: var(--space-1); }
}