@font-face {
  font-family: "Antiaveraging Serif";
  src: url("/assets/fonts/source-han-serif-regular.woff2") format("woff2");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

:root {
  --reader-header-control-height: 56px;
  --reader-header-height: calc(var(--reader-header-control-height) + env(safe-area-inset-top));
}

@font-face {
  font-family: "Antiaveraging Serif";
  src: url("/assets/fonts/source-han-serif-bold.woff2") format("woff2");
  font-style: normal;
  font-weight: 700;
  font-display: swap;
}

@font-face {
  font-family: "Antiaveraging Sans";
  src: url("/assets/fonts/pretendard-regular.woff2") format("woff2");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "Antiaveraging Sans";
  src: url("/assets/fonts/pretendard-semibold.woff2") format("woff2");
  font-style: normal;
  font-weight: 600;
  font-display: swap;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--page);
  color: var(--ink);
  font-family: "Antiaveraging Serif", ui-serif, "Apple SD Gothic Neo", "Noto Serif KR", "Source Han Serif K", serif;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--page);
  color: var(--ink);
}

body.font-scale-0 {
  --reader-body-size: 16px;
  --reader-body-line-height: 1.82;
  --reader-caption-size: 13px;
  --reader-caption-line-height: 1.64;
}

body.font-scale-1 {
  --reader-body-size: 17px;
  --reader-body-line-height: 1.88;
  --reader-caption-size: 14px;
  --reader-caption-line-height: 1.7;
}

body.font-scale-2 {
  --reader-body-size: 18px;
  --reader-body-line-height: 1.94;
  --reader-caption-size: 15px;
  --reader-caption-line-height: 1.76;
}

a {
  color: inherit;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

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

.skip-link {
  position: fixed;
  inset-block-start: 12px;
  inset-inline-start: 12px;
  z-index: 20;
  min-height: 40px;
  padding: 10px 14px;
  transform: translateY(-72px);
  background: var(--ink);
  color: var(--page);
}

.skip-link:focus {
  transform: translateY(0);
}

.reader-header {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--reader-header-height);
  min-height: var(--reader-header-height);
  padding-block-start: env(safe-area-inset-top);
  padding-inline-start: calc(24px + env(safe-area-inset-left));
  padding-inline-end: calc(24px + env(safe-area-inset-right));
  background: var(--page);
  border-block-end: 1px solid var(--panel);
}

.reader-header__title,
.reader-header__contents {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  font-size: 15px;
  text-decoration: none;
}

.reader-header__title {
  font-weight: 700;
}

.reader-header__contents {
  color: var(--muted);
}

.reader-header__search {
  flex: 0 0 40px;
  padding: 0;
  text-decoration: none;
}

.reader-header__search svg {
  width: 18px;
  height: 18px;
}

.reader-header__font-controls {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-inline-start: auto;
  margin-inline-end: 12px;
}

.reader-icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  min-height: 40px;
  padding: 0 10px;
  border: 1px solid var(--panel);
  border-radius: 999px;
  background: var(--page);
  color: var(--muted);
  font: inherit;
  cursor: pointer;
}

.reader-icon-button:hover,
.reader-icon-button:focus-visible,
.reader-icon-button.is-active {
  border-color: var(--ink);
  color: var(--ink);
}

.reader-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 680px);
  gap: 48px;
  align-items: start;
  width: min(100% - 48px, 948px);
  margin: 0 auto;
  padding: calc(var(--reader-header-height) + 44px) 0 72px;
}

.reader-rail {
  position: sticky;
  inset-block-start: calc(var(--reader-header-height) + 28px);
  max-height: calc(100vh - var(--reader-header-height) - 48px);
  overflow: auto;
  padding: 0 0 24px;
  color: var(--muted);
  font-family: "Antiaveraging Sans", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", sans-serif;
  font-size: 13px;
  line-height: 1.45;
}

.reader-rail ol,
.reader-rail ul,
.reader-rail__group {
  margin: 0;
  padding: 0;
}

.reader-rail li {
  list-style: none;
}

.reader-rail a {
  display: flex;
  align-items: center;
  min-height: 32px;
  padding: 6px 8px;
  border-radius: 6px;
  text-decoration: none;
}

.reader-rail a:hover,
.reader-rail a:focus,
.reader-rail a[aria-current="page"] {
  background: var(--panel);
  color: var(--ink);
}

.reader-rail__matter {
  margin-block-end: 18px;
  padding-block-end: 18px;
  border-block-end: 1px solid var(--panel);
}

.reader-main {
  min-width: 0;
}

.reader-column {
  width: min(100%, var(--reader-width));
}

.chapter,
.matter {
  background: transparent;
}

.chapter h1,
.matter h1 {
  margin: 0 0 32px;
  font-size: 32px;
  line-height: 1.3;
  letter-spacing: 0;
}

.chapter h2,
.matter h2 {
  margin: 48px 0 16px;
  font-size: 22px;
  line-height: 1.45;
  letter-spacing: 0;
}

.chapter h3,
.matter h3 {
  margin: 36px 0 12px;
  font-size: 18px;
  line-height: 1.5;
  letter-spacing: 0;
}

.chapter p,
.matter p,
.chapter li,
.matter li,
figcaption {
  font-size: var(--reader-body-size);
  line-height: var(--reader-body-line-height);
  letter-spacing: 0;
  word-break: keep-all;
  overflow-wrap: anywhere;
}

.chapter p,
.matter p {
  margin: 0 0 22px;
}

.chapter ol,
.chapter ul,
.matter ol,
.matter ul {
  padding-inline-start: 1.4em;
}

figure {
  margin: 36px 0;
}

.figure-link {
  display: block;
}

figcaption {
  margin-block-start: 12px;
  color: var(--muted);
  font-size: var(--reader-caption-size);
  line-height: var(--reader-caption-line-height);
}

.figure-title {
  font-family: "Antiaveraging Sans", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", sans-serif;
  font-weight: 700;
}

.toc li,
.chapter-notes li,
.figure-list li,
.index-term li,
.bibliography li {
  margin-block-end: 12px;
}

.search-results {
  margin: 28px 0 0;
  padding: 0;
}

.search-result {
  list-style: none;
  margin: 0 0 18px;
  padding: 14px 0 14px 16px;
  border-inline-start: 4px solid var(--gold);
}

.search-result__meta {
  margin: 4px 0 0;
  color: var(--muted);
  font-family: "Antiaveraging Sans", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", sans-serif;
  font-size: 13px;
  line-height: 1.5;
}

.reader-pager {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 12px;
  margin-block-start: 56px;
  font-family: "Antiaveraging Sans", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", sans-serif;
}

.reader-pager__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--panel);
  border-radius: 8px;
  text-decoration: none;
}

.reader-footer {
  padding: 0 24px 32px;
  color: var(--muted);
  font-family: "Antiaveraging Sans", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", sans-serif;
  font-size: 13px;
  text-align: center;
}

.reader-dialog {
  width: min(100% - 32px, 720px);
  padding: 0;
  border: 1px solid var(--panel);
  border-radius: 16px;
  background: var(--page);
  color: var(--ink);
}

.reader-dialog::backdrop {
  background: rgba(32, 35, 33, 0.42);
}

.reader-dialog--wide {
  width: min(100% - 32px, 960px);
}

.reader-dialog__frame {
  padding: 20px;
}

.reader-dialog__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-block-end: 16px;
}

.reader-dialog__title {
  margin: 0;
  font-size: 20px;
  line-height: 1.4;
}

.reader-dialog__body {
  max-height: min(72vh, 720px);
  overflow: auto;
}

.reader-dialog__body p:first-child,
.reader-dialog__body li:first-child {
  margin-block-start: 0;
}

.reader-dialog__fallback {
  display: inline-flex;
  margin-block-start: 16px;
  color: var(--muted);
}

.reader-dialog__figure {
  margin: 0;
}

.reader-dialog__figure img {
  width: 100%;
  max-height: 72vh;
  object-fit: contain;
}

.reader-rail__close {
  display: none;
}

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

  .reader-rail,
  body.reader-enhanced::before {
    transition: none;
  }
}

@media (max-width: 820px) {
  .reader-header {
    padding-inline-start: calc(20px + env(safe-area-inset-left));
    padding-inline-end: calc(20px + env(safe-area-inset-right));
  }

  .reader-layout {
    display: block;
    width: 100%;
    padding: calc(var(--reader-header-height) + 24px) calc(20px + env(safe-area-inset-right)) 56px calc(20px + env(safe-area-inset-left));
  }

  body.reader-enhanced::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 14;
    pointer-events: none;
    background: rgba(32, 35, 33, 0.16);
    opacity: 0;
    transition: opacity 160ms ease;
  }

  body.reader-enhanced.contents-open::before {
    opacity: 1;
    pointer-events: auto;
  }

  .reader-rail {
    max-height: none;
    margin-block-end: 32px;
    padding-block-end: 20px;
    border-block-end: 1px solid var(--panel);
  }

  body.reader-enhanced .reader-rail {
    position: fixed;
    inset-block-start: 0;
    inset-inline-end: 0;
    z-index: 15;
    width: min(88vw, 360px);
    height: 100dvh;
    margin: 0;
    padding-block-start: calc(20px + env(safe-area-inset-top));
    padding-inline-end: calc(20px + env(safe-area-inset-right));
    padding-block-end: calc(20px + env(safe-area-inset-bottom));
    padding-inline-start: calc(20px + env(safe-area-inset-left));
    background: var(--page);
    border-block-end: 0;
    box-shadow: -16px 0 40px rgba(32, 35, 33, 0.12);
    overflow: auto;
    transform: translateX(100%);
    transition: transform 160ms ease;
  }

  body.reader-enhanced.contents-open .reader-rail {
    transform: translateX(0);
  }

  .reader-rail__close {
    display: inline-flex;
    margin-inline-start: auto;
    margin-block-end: 16px;
  }

  .reader-rail__chapters {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 2px 8px;
  }

  .chapter h1,
  .matter h1 {
    font-size: 28px;
  }

}

@media (max-width: 520px) {
  .reader-rail__chapters {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .reader-header {
    padding-inline-start: calc(12px + env(safe-area-inset-left));
    padding-inline-end: calc(12px + env(safe-area-inset-right));
    gap: 4px;
  }

  .reader-header__title {
    min-width: 0;
    font-size: 13px;
  }

  .reader-header__font-controls {
    gap: 2px;
    margin-inline: auto 4px;
  }

  .reader-icon-button {
    min-width: 34px;
    min-height: 40px;
    padding-inline: 6px;
  }

  .reader-header__contents {
    font-size: 13px;
  }
}