:root {
  color-scheme: dark;
  --background: #090b0f;
  --text: #f1eee8;
  --secondary: #bcbec4;
  --rule: #343a44;
  --cover: #233744;
  --paper: #f1e3cb;
  --serif: Lora, Georgia, serif;
  --sans: Manrope, system-ui, sans-serif;
}

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

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font: 16px/1.55 var(--sans);
}

body[data-book="omega-1"] { --cover: #50392e; }
body[data-book="mad-sports"] { --cover: #303862; }
body[data-book="last-time"] { --cover: #5a3841; }
body[data-book="after-midnight"] { --cover: #49352c; }
body[data-book="root-access"] { --cover: #3c3a58; }
body[data-book="lost-and-found"] { --cover: #324353; }
body[data-book="yalisa"] { --cover: #3c4939; }
body[data-book="inflation"] { --cover: #55422e; }

.book-site-header,
.book-page {
  width: min(calc(100% - 40px), 1060px);
  margin-inline: auto;
}

.book-site-header {
  padding-block: 12px;
  border-bottom: 1px solid var(--rule);
}

.book-site-header a,
.guide-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  color: var(--secondary);
  text-underline-offset: 4px;
}

.book-site-header img { border-radius: 6px; }

.book-site-header a:hover,
.guide-link:hover { color: var(--text); }

a:focus-visible {
  outline: 2px solid var(--paper);
  outline-offset: 4px;
}

.book-page { padding-block: clamp(30px, 6vw, 76px); }

.book-intro {
  display: grid;
  grid-template-columns: minmax(0, 280px) minmax(0, 1fr);
  align-items: center;
  gap: clamp(32px, 7vw, 92px);
}

.book-cover {
  display: block;
  width: 100%;
  aspect-ratio: 2 / 3;
  border-radius: 2px 8px 8px 2px;
  box-shadow: 0 14px 28px #0007;
}

.book-cover-image {
  height: auto;
  object-fit: cover;
}

.book-cover-type {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 12px;
  padding: 24px 20px 24px 28px;
  color: #f9f2e5;
  background: linear-gradient(90deg, #0004 0 8px, #fff2 9px, transparent 10px), var(--cover);
}

.book-cover-type strong {
  font: 600 clamp(21px, 3vw, 34px)/1.13 var(--serif);
  overflow-wrap: anywhere;
  text-wrap: balance;
}

.book-cover-type span { font-size: 13px; }

.book-summary h1 {
  margin: 0;
  font: 600 clamp(35px, 6vw, 70px)/1.07 var(--serif);
  letter-spacing: -0.035em;
  overflow-wrap: anywhere;
  text-wrap: balance;
}

.book-byline {
  margin: 12px 0 22px;
  color: var(--secondary);
  font-size: 14px;
}

.book-annotation {
  max-width: 62ch;
  margin: 0;
  font: 400 clamp(17px, 2.2vw, 21px)/1.65 var(--serif);
}

.book-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  align-items: center;
  margin-top: 27px;
}

.read-link {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 10px 18px;
  border-radius: 5px;
  background: var(--paper);
  color: #18150f;
  font-weight: 700;
  text-decoration: none;
}

.read-link:hover { background: #fff0d7; }

.listen-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 10px 18px;
  border: 1px solid var(--secondary);
  border-radius: 5px;
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}
.listen-link:hover { background: #181c24; }

.book-guide {
  margin-top: clamp(38px, 7vw, 82px);
  padding-top: 25px;
  border-top: 1px solid var(--rule);
  scroll-margin-top: 18px;
}

.book-guide h2 {
  margin: 0 0 14px;
  font: 600 clamp(24px, 3.6vw, 36px)/1.2 var(--serif);
}

.book-guide ol {
  max-width: 67ch;
  margin: 0;
  padding-left: 1.4em;
  color: var(--secondary);
}

.book-guide li + li { margin-top: 9px; }
.book-guide li::marker { color: var(--paper); }

@media (max-width: 620px) {
  .book-intro { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .book-cover { width: min(52vw, 206px); }
  .book-cover-type { padding: 14px 12px 14px 18px; }
  .book-cover-type span { font-size: 11px; }
}