/* MARU Center — Wireframe shell (doc chrome outside the canvas) */

:root {
  --bg: #666666;
  --surface: #ffffff;
  --ink: #1a2332;
  --muted: #5c6678;
  --line: #c8cdd6;
  --nav: #2a2a2a;
  --nav-accent: #8a8a8a;
  --radius: 4px;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
  --text-sm: 0.75625rem;
  --text-title: clamp(1.65rem, 3.3vw, 2.2rem);
  --version-nav-height: 3.1rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scrollbar-gutter: stable;
}

body {
  margin: 0;
  min-height: 100vh;
  padding-top: var(--version-nav-height);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.5;
  color: var(--ink);
  background: var(--bg);
}

.page {
  max-width: none;
  margin: 0 auto;
  padding: 2rem 1rem 3rem;
}

.version-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  flex-direction: row;
  width: 100%;
  margin: 0;
  padding: 0;
  background: var(--nav);
  border-bottom: 3px solid var(--nav-accent);
  box-shadow: 0 2px 6px rgb(0 0 0 / 0.18);
}

.version-nav__btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: var(--version-nav-height);
  padding: 0.9rem 0.35rem;
  border: none;
  border-bottom: 3px solid transparent;
  border-radius: 0;
  font-family: var(--font);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  color: rgb(255 255 255 / 0.78);
  background: transparent;
}

.version-nav__btn + .version-nav__btn {
  border-left: 1px solid rgb(255 255 255 / 0.12);
}

.version-nav__btn:hover,
.version-nav__btn:focus-visible {
  color: #ffffff;
  background: rgb(255 255 255 / 0.06);
  outline: none;
}

.version-nav__btn--active,
.version-nav__btn--active:hover {
  color: #ffffff;
  border-bottom-color: #ffffff;
  background: rgb(255 255 255 / 0.08);
}

.version-nav__btn--wireframe.version-nav__btn--active {
  border-bottom-color: #90caf9;
}

.version-nav__btn--current.version-nav__btn--active {
  border-bottom-color: #ffb74d;
}

.header {
  max-width: 1200px;
  margin: 0 auto 1.5rem;
  padding: 0 0.25rem;
}

.header__eyebrow {
  margin: 0 0 0.35rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #ffffff;
}

.header__title {
  margin: 0 0 0.35rem;
  font-size: var(--text-title);
  font-weight: 600;
  line-height: 1.15;
  color: #ffffff;
}

.header__meta {
  margin: 0;
  font-size: 0.9rem;
  color: rgb(255 255 255 / 0.82);
}

.wf-stage {
  padding: 0;
}