:root {
  --paper: #12100e;
  --sheet: #1c1815;
  --ink: #f0e8dc;
  --muted: #c4b6a6;
  --line: #3f372f;
  --edge: #7d6e62;
  --flower: #e7b1b6;
  --flower-deep: #f3c9cc;
  --soft: #3c2c2e;
  --reading-size: 18px;
  --header-height: 4.25rem;
  color-scheme: dark;
}

* { box-sizing: border-box; }

html { scroll-behavior: auto; }

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(900px 420px at 0% -10%, rgba(180, 90, 100, 0.14), transparent 55%),
    var(--paper);
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", "Yu Gothic", "Noto Sans CJK JP", sans-serif;
  line-height: 1.6;
}

[hidden] { display: none !important; }

.skip {
  position: absolute;
  left: 0.75rem;
  top: -4rem;
  background: var(--sheet);
  color: var(--ink);
  padding: 0.4rem 0.7rem;
  border-radius: 0.4rem;
  z-index: 6;
}

.skip:focus { top: 0.75rem; }

::selection {
  background: #5c343a;
  color: var(--ink);
}

.progress {
  position: fixed;
  inset: 0 auto auto 0;
  height: 3px;
  width: 100%;
  transform-origin: left center;
  transform: scaleX(0);
  background: var(--flower);
  z-index: 6;
  pointer-events: none;
}

.top {
  position: sticky;
  top: 0;
  z-index: 4;
  background: rgba(18, 16, 14, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

.top-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  flex: 0 0 auto;
  color: var(--flower-deep);
  text-decoration: none;
  font-family: "Yu Mincho", "YuMincho", "Hiragino Mincho ProN", "Hiragino Mincho Pro", serif;
  font-size: 1.35rem;
  letter-spacing: 0.14em;
  white-space: nowrap;
}

.brand img { display: block; }

.tools {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-wrap: wrap;
  justify-content: flex-end;
  margin-left: auto;
}

.tool,
.font-control button {
  appearance: none;
  border: 1px solid var(--edge);
  background: var(--sheet);
  color: var(--ink);
  text-decoration: none;
  border-radius: 999px;
  padding: 0.28rem 0.75rem;
  font: inherit;
  font-size: 0.92rem;
  line-height: 1.4;
  cursor: pointer;
}

.tool:hover,
.font-control button:hover { border-color: var(--flower); color: var(--flower-deep); }

.tool:focus-visible,
.font-control button:focus-visible,
.chapter-index a:focus-visible,
.toc a:focus-visible,
.pager-link:focus-visible,
.brand:focus-visible {
  outline: 2px solid var(--flower);
  outline-offset: 2px;
}

.font-control {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.font-label {
  color: var(--muted);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  margin-right: 0.1rem;
}

.font-control button { min-width: 2.1rem; padding-inline: 0.55rem; }

.font-control button:disabled {
  opacity: 0.4;
  cursor: default;
}

.layout {
  max-width: 1080px;
  margin: 0 auto;
  padding: 1.75rem 1.25rem 4rem;
}

.layout.is-reading {
  display: grid;
  grid-template-columns: minmax(0, 220px) minmax(0, 1fr);
  gap: 1.75rem;
  align-items: start;
}

.toc {
  position: sticky;
  top: calc(var(--header-height) + 0.75rem);
  max-height: calc(100vh - var(--header-height) - 1.5rem);
  overflow: auto;
  padding: 0.85rem 0.8rem;
  background: rgba(28, 24, 21, 0.92);
  border: 1px solid var(--line);
  border-radius: 0.9rem;
}

.toc-title {
  margin: 0 0 0.55rem;
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
}

.toc ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

.toc a {
  display: block;
  padding: 0.38rem 0.45rem;
  border-radius: 0.45rem;
  color: var(--ink);
  text-decoration: none;
  font-size: 0.92rem;
}

.toc a[aria-current="page"] {
  background: var(--soft);
  color: var(--flower-deep);
}

.index-title,
.chapter-title,
.work-title {
  font-family: "Yu Mincho", "YuMincho", "Hiragino Mincho ProN", "Hiragino Mincho Pro", "Noto Serif CJK JP", serif;
  font-weight: 500;
  letter-spacing: 0.06em;
}

.index-title {
  margin: 0 0 0.4rem;
  font-size: 1.8rem;
}

.lead,
.work-meta,
.status {
  color: var(--muted);
}

.lead { margin-top: 0; max-width: 40rem; }

.work { margin-top: 2.2rem; }

.work-title {
  margin: 0;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--line);
  font-size: clamp(1.25rem, 2.5vw, 1.65rem);
}

.work-meta {
  margin: 0.45rem 0 0.2rem;
  font-size: 0.88rem;
  letter-spacing: 0.08em;
}

.chapter-index {
  list-style: none;
  margin: 0;
  padding: 0;
}

.chapter-index a {
  display: grid;
  grid-template-columns: 4.5rem minmax(0, 1fr);
  gap: 0.8rem;
  align-items: baseline;
  padding: 0.72rem 0.15rem;
  border-bottom: 1px solid rgba(127, 110, 98, 0.45);
  color: inherit;
  text-decoration: none;
}

.chapter-index a:hover .ch-label { color: var(--flower-deep); }

.ch-label {
  color: var(--flower);
  letter-spacing: 0.08em;
  font-size: 0.95rem;
}

.ch-opening {
  color: var(--ink);
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.layout:not(.is-reading) #content {
  width: min(760px, 100%);
  margin-inline: auto;
}

#content,
.sheet,
.prose,
.pager {
  min-width: 0;
}

.sheet {
  width: min(40em, 760px, 100%);
  margin-inline: auto;
  font-size: var(--reading-size);
}

.kicker {
  margin: 0;
  color: var(--flower);
  letter-spacing: 0.18em;
  font-size: 0.78rem;
}

.chapter-title {
  margin: 0.35rem 0 1.4rem;
  font-size: 1.7rem;
  line-height: 1.4;
}

.prose {
  width: 100%;
  max-width: 760px;
  font-family: "Yu Mincho", "YuMincho", "Hiragino Mincho ProN", "Hiragino Mincho Pro", "Noto Serif CJK JP", "Source Han Serif JP", serif;
  font-size: var(--reading-size);
  line-height: 1.95;
  letter-spacing: 0.03em;
  overflow-wrap: anywhere;
  line-break: strict;
}

.prose p { margin: 0; }

.prose .gap { height: 1em; }

.prose .scene {
  margin-top: 1.35em;
  margin-bottom: 0.4em;
  text-align: center;
  letter-spacing: 0.45em;
  color: var(--muted);
}

.pager {
  width: 100%;
  max-width: 760px;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 2.8rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
}

.pager-link {
  display: inline-flex;
  align-items: center;
  min-width: 6.5rem;
  justify-content: center;
  padding: 0.55rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--edge);
  background: var(--sheet);
  color: var(--ink);
  text-decoration: none;
}

.pager-link.is-disabled {
  opacity: 0.38;
  border-style: dashed;
}

a.pager-link:hover { border-color: var(--flower); color: var(--flower-deep); }

.noscript {
  max-width: 40rem;
  margin: 1rem auto;
  padding: 0 1.25rem;
}

#content:focus { outline: none; }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 859px) {
  .layout { padding-inline: 1rem; }
  .layout.is-reading { grid-template-columns: minmax(0, 1fr); }
  .top-inner { padding-inline: 0.85rem; }
  .brand { letter-spacing: 0.08em; font-size: 1.15rem; }
  .toc { display: none; position: static; max-height: none; }
  .toc.is-open { display: block; }
  .chapter-index a { grid-template-columns: 4rem minmax(0, 1fr); }
}

@media (min-width: 860px) {
  #toggle-toc { display: none; }
}

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

@media print {
  :root {
    --paper: #ffffff;
    --sheet: #ffffff;
    --ink: #241c18;
    --muted: #5c534c;
    --line: #d9cfc3;
    --edge: #b7aa9c;
    --flower: #8c3a45;
    --flower-deep: #6d2433;
    --soft: #f6e7e2;
    color-scheme: light;
  }
  .top, .toc, .progress, .pager, .tools { display: none !important; }
  body { background: white; color: var(--ink); }
  .layout { display: block; max-width: none; padding: 0; }
  .prose { width: auto; }
}