* {
  box-sizing: border-box;
}

html,
body {
  min-width: 0;
  overflow-x: clip;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a,
button,
input {
  font: inherit;
}

a {
  color: inherit;
}

h1,
h2,
h3,
h4,
p,
figure,
figcaption,
dl,
dd,
ol,
ul {
  margin: 0;
}

ol,
ul {
  padding: 0;
}

li {
  list-style: none;
}

h1,
h2,
h3,
h4 {
  min-width: 0;
  overflow-wrap: anywhere;
  font-family: var(--font-display);
  font-style: normal;
  line-height: 1.05;
}

code,
time,
.pack-label,
.pack-bar,
.scene-caption,
.system-label {
  font-family: var(--font-label);
}

::selection {
  background: var(--color-accent);
  color: var(--color-accent-ink);
}

:focus-visible {
  outline: var(--rule-strong) solid var(--color-focus);
  outline-offset: var(--space-2xs);
}

.pack-bar {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  min-height: 4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-sm) var(--page-gutter);
}

.pack-brand,
.pack-links,
.pack-links a {
  display: inline-flex;
  align-items: center;
}

.pack-brand {
  min-height: 2.75rem;
  gap: var(--space-sm);
  color: var(--color-ink);
  text-decoration: none;
  white-space: nowrap;
}

.pack-mark {
  width: 1.75rem;
  display: grid;
  gap: var(--space-2xs);
}

.pack-mark i {
  display: block;
  height: var(--rule-strong);
  background: currentColor;
}

.pack-mark i:nth-child(2) {
  width: 70%;
  background: var(--color-accent);
}

.pack-mark i:nth-child(3) {
  width: 42%;
}

.pack-links {
  gap: var(--space-xs);
}

.pack-links a {
  min-height: 2.75rem;
  padding: 0 var(--space-md);
  text-decoration: none;
  white-space: nowrap;
}

.pack-links a:active {
  transform: translateY(var(--space-3xs));
}

.pack-shell {
  width: min(var(--page-max), 100%);
  margin-inline: auto;
  padding-inline: var(--page-gutter);
}

.pack-label {
  color: var(--color-muted);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.scene-caption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  color: var(--color-muted);
  font-size: var(--text-xs);
}

.pack-footer {
  display: grid;
  gap: var(--space-lg);
  padding: var(--space-2xl) var(--page-gutter);
}

.pack-footer p {
  max-width: 40ch;
  font-family: var(--font-display);
  font-size: var(--text-xl);
  line-height: 1.15;
}

.pack-footer-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.pack-footer-meta a {
  min-height: 2.75rem;
  display: inline-flex;
  align-items: center;
  color: var(--color-ink);
  text-decoration-thickness: var(--rule-hair);
  text-underline-offset: var(--space-2xs);
  white-space: nowrap;
}

.status-spinner {
  width: 1rem;
  height: 1rem;
  display: inline-block;
  border: var(--rule-strong) solid var(--color-rule);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: shared-spin 900ms linear infinite;
}

@keyframes shared-spin {
  to { transform: rotate(1turn); }
}

@media (hover: hover) and (pointer: fine) {
  .pack-links a,
  .pack-footer-meta a {
    transition: color var(--dur-micro) var(--ease-out), transform var(--dur-micro) var(--ease-out);
  }

  .pack-links a:hover,
  .pack-footer-meta a:hover {
    color: var(--color-accent);
    transform: translateY(calc(var(--space-3xs) * -1));
  }
}

@media (max-width: 40rem) {
  .pack-bar {
    align-items: center;
    gap: var(--space-xs);
    padding-block: var(--space-xs);
  }

  .pack-brand > span:last-child {
    display: none;
  }

  .pack-links {
    gap: 0;
    font-size: var(--text-xs);
  }

  .pack-links a {
    padding-inline: var(--space-xs);
  }

  .pack-links a:first-child {
    display: none;
  }

  .pack-footer-meta {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 150ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 150ms !important;
  }

  .status-spinner {
    animation-duration: 1.8s !important;
    animation-iteration-count: infinite !important;
  }
}