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

html {
  scroll-snap-type: y mandatory;
  scroll-behavior: smooth;
  background: var(--paper);
  color: var(--ink);
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--sans);
  background:
    radial-gradient(1200px 500px at 80% -10%, rgba(213, 221, 216, 0.7), transparent 60%),
    var(--paper);
}

button,
a {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  background: none;
  border: 0;
  padding: 0;
}

img {
  max-width: 100%;
  display: block;
}

:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 3px;
}

.chrome {
  position: fixed;
  z-index: 20;
  left: 1.25rem;
  right: 1.25rem;
  bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  pointer-events: none;
}

.chrome > * {
  pointer-events: auto;
}

.nav-btn,
.ghost-btn {
  height: 2.5rem;
  padding: 0 0.9rem;
  border-radius: 999px;
  background: rgba(251, 250, 247, 0.88);
  border: 1px solid var(--line);
  backdrop-filter: blur(10px);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.72rem;
}

.nav-btn svg,
.ghost-btn svg {
  width: 1rem;
  height: 1rem;
}

.dots {
  margin: 0 auto;
  display: flex;
  gap: 0.4rem;
  padding: 0.3rem;
  border-radius: 999px;
  background: rgba(251, 250, 247, 0.88);
  border: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.dots button {
  min-width: 5.5rem;
  height: 2rem;
  padding: 0 0.8rem;
  border-radius: 999px;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.dots button[aria-current="true"] {
  background: var(--ink);
  color: var(--white);
}

.hint {
  position: fixed;
  top: 1.1rem;
  right: 1.4rem;
  z-index: 20;
  margin: 0;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.dialog {
  width: min(640px, calc(100vw - 2rem));
  border: 0;
  border-radius: 1.25rem;
  padding: 0;
  background: var(--white);
  color: var(--ink);
  box-shadow: var(--shadow);
}

.dialog::backdrop {
  background: rgba(22, 24, 27, 0.46);
}

.dialog-head,
.dialog-body {
  padding: 1.25rem 1.4rem;
}

.dialog-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--line);
}

.dialog-head h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.6rem;
  font-weight: 500;
}

.dialog-body {
  max-height: min(70vh, 640px);
  overflow: auto;
}

.source + .source {
  margin-top: 1.1rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line);
}

.source h3 {
  margin: 0 0 0.25rem;
  font-size: 1rem;
}

.source p {
  margin: 0.2rem 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.45;
}

.source a {
  color: var(--ink);
}

body.is-assembly .hint,
body.is-assembly #sources-btn,
body.is-assembly .nav-btn span,
body.is-assembly .ghost-btn span {
  display: none;
}

body.is-assembly .nav-btn,
body.is-assembly .ghost-btn {
  width: 2.75rem;
  padding: 0;
  justify-content: center;
}

body.is-assembly .dots button {
  min-width: 0;
  width: 0.7rem;
  height: 0.7rem;
  padding: 0;
  font-size: 0;
  background: transparent;
  border: 1px solid var(--ink);
}

body.is-assembly .dots button[aria-current="true"] {
  background: var(--ink);
}

@media (max-width: 800px) {
  .nav-btn span,
  .ghost-btn span {
    display: none;
  }

  .nav-btn,
  .ghost-btn {
    width: 2.5rem;
    padding: 0;
    justify-content: center;
  }

  .hint {
    display: none;
  }
}

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