:root {
  --fo-paper: #f3ebc6;
  --fo-ink: #2a2414;
  --fo-cob: #0f766e;
  --fo-cob-deep: #0b5a54;
  --fo-brown: #5c4a2a;
  --fo-line: #ddd0a0;
  --fo-sheet: #fbf7e3;
  --fo-night: #1d1910;
  --fo-r1: 10px;
  --fo-r2: 2px;
  --fo-cjk: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", sans-serif;
  --fo-lat: "Javanese Text", "Cambria", serif;
  --fo-wide: 1180px;
  --fo-read: 38em;
}

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

html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--fo-paper);
  color: var(--fo-ink);
  font-family: var(--fo-cjk);
  font-size: 16px;
  line-height: 1.8;
}

a { color: var(--fo-cob-deep); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: var(--fo-ink); }

:focus-visible { outline: 3px solid var(--fo-cob); outline-offset: 2px; border-radius: var(--fo-r2); }

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

.fo-skip {
  position: absolute;
  left: 12px;
  top: -60px;
  z-index: 20;
  padding: 10px 16px;
  background: var(--fo-ink);
  color: var(--fo-sheet);
  text-decoration: none;
}
.fo-skip:focus { top: 8px; }

.fo-main:focus { outline: none; }

.fo-top {
  background: var(--fo-paper);
  border-bottom: 3px double var(--fo-brown);
}
.fo-top-in {
  max-width: var(--fo-wide);
  margin: 0 auto;
  padding: 10px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.fo-brand { display: inline-flex; align-items: center; min-height: 44px; color: var(--fo-ink); }
.fo-mark { display: block; height: 36px; width: auto; }
.fo-mark-page { fill: var(--fo-cob); }
.fo-mark-rule { stroke: var(--fo-sheet); stroke-width: 2; stroke-linecap: round; fill: none; }
.fo-mark-word { fill: currentColor; }

.fo-nav-ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 4px; }
.fo-nav-a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  min-width: 48px;
  padding: 0 14px;
  color: var(--fo-ink);
  text-decoration: none;
  border-radius: var(--fo-r2);
  font-size: 15px;
}
.fo-nav-a:hover { background: var(--fo-sheet); color: var(--fo-ink); }
.fo-nav-a[aria-current="page"] { background: var(--fo-ink); color: var(--fo-sheet); }

.fo-hero {
  max-width: var(--fo-wide);
  margin: 0 auto;
  padding: 28px 24px 40px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 556px;
  grid-template-areas:
    "text book"
    "pick book";
  grid-template-rows: auto 1fr;
  column-gap: 40px;
  row-gap: 22px;
}
.fo-hero-text { grid-area: text; }
.fo-kicker { color: var(--fo-brown); font-size: 15px; letter-spacing: .04em; }
.fo-h1 {
  margin: 6px 0 14px;
  font-size: clamp(47px, 7.2vw, 93px);
  line-height: 1.04;
  font-weight: 800;
  letter-spacing: -.01em;
  line-break: strict;
}
.fo-h1-seg { display: inline-block; }
.fo-art-h1 .fo-hseg { display: inline-block; }
.fo-lede { max-width: 30em; font-size: 17px; line-height: 1.8; }

.fo-pick {
  grid-area: pick;
  align-self: start;
  position: relative;
  max-width: 30em;
  margin-top: 10px;
  padding: 22px 20px 14px;
  background: var(--fo-sheet);
  border: 3px double var(--fo-brown);
  border-radius: var(--fo-r2);
}
.fo-pick-label {
  position: absolute;
  top: -13px;
  left: 14px;
  padding: 1px 10px;
  background: var(--fo-ink);
  color: var(--fo-sheet);
  font-size: 13px;
  line-height: 1.7;
}
.fo-pick-link {
  display: block;
  color: var(--fo-ink);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.5;
  text-decoration-color: var(--fo-cob);
  text-decoration-thickness: 2px;
  text-underline-offset: 5px;
}
.fo-pick-why { margin-top: 6px; font-size: 15px; line-height: 1.7; color: var(--fo-ink); }
.fo-pick-by { margin-top: 4px; text-align: right; font-size: 13px; color: var(--fo-brown); }

.fo-book {
  grid-area: book;
  align-self: start;
  margin-top: 34px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--fo-sheet);
  border: 1px solid var(--fo-line);
  border-radius: var(--fo-r2);
  box-shadow: 0 1px 0 var(--fo-line), 0 18px 30px -22px rgba(42, 36, 20, .55);
  position: relative;
}
.fo-leaf { position: relative; padding: 16px 18px 22px; min-height: 430px; }
.fo-leaf-l { background: linear-gradient(to left, rgba(92, 74, 42, .16), rgba(92, 74, 42, 0) 26px); border-right: 1px solid var(--fo-line); }
.fo-leaf-r { background: linear-gradient(to right, rgba(92, 74, 42, .16), rgba(92, 74, 42, 0) 26px); padding-right: 48px; }
.fo-leaf-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  border-bottom: 3px double var(--fo-ink);
  padding-bottom: 4px;
  margin-bottom: 8px;
}
.fo-leaf-r .fo-leaf-big { visibility: hidden; }
.fo-leaf-run { font-size: 13px; color: var(--fo-brown); }
.fo-leaf-big { font-family: var(--fo-lat); font-size: 46px; line-height: .9; font-weight: 700; }
.fo-ents { list-style: none; margin: 0; padding: 0; }
.fo-ent {
  display: flex;
  align-items: baseline;
  gap: 4px;
  font-size: 13px;
  line-height: 1.55;
  padding: 3px 0;
  position: relative;
}
.fo-ent::after { content: ""; order: 2; flex: 1; border-bottom: 1px dotted var(--fo-brown); transform: translateY(-4px); min-width: 12px; }
.fo-ent-n { order: 1; font-weight: 700; }
.fo-ent-v { order: 3; color: var(--fo-brown); }
.fo-ent-x .fo-ent-n, .fo-ent-x .fo-ent-v { text-decoration: line-through; text-decoration-color: rgba(92, 74, 42, .7); color: #6d5c3c; }
.fo-ent-mine { margin: 10px 0 30px; }
.fo-ent-mine::before {
  content: "";
  position: absolute;
  inset: -6px -9px -6px -9px;
  border: 2px solid var(--fo-cob);
  border-radius: 48% 52% 46% 54% / 58% 44% 56% 42%;
  transform: rotate(-1.6deg);
}
.fo-ent-pen {
  order: 5;
  position: absolute;
  left: 18px;
  top: calc(100% + 6px);
  color: var(--fo-cob);
  font-size: 14px;
  font-style: italic;
  font-weight: 700;
  transform: rotate(-3deg);
  white-space: nowrap;
}
.fo-thumbs {
  position: absolute;
  right: 0;
  top: 74px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.fo-thumbs span {
  width: 26px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-left: 4px;
  background: var(--fo-brown);
  color: var(--fo-sheet);
  border-radius: 34px 0 0 34px;
  font-family: var(--fo-lat);
  font-size: 14px;
  line-height: 1;
}
.fo-thumbs .fo-thumb-on { background: var(--fo-cob); width: 32px; }

.fo-bm {
  position: relative;
  color: var(--fo-sheet);
  background: var(--fo-cob);
}
.fo-bm-home {
  grid-area: book;
  justify-self: end;
  align-self: start;
  width: 238px;
  margin-right: 56px;
  z-index: 2;
  padding: 18px 18px 40px;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 50% calc(100% - 20px), 0 100%);
  box-shadow: inset 0 0 0 1px rgba(251, 247, 227, .25);
}
.fo-bm-home::before {
  content: "";
  position: absolute;
  left: 8px;
  right: 8px;
  top: 8px;
  bottom: 28px;
  border: 1px dashed rgba(251, 247, 227, .45);
  pointer-events: none;
}
.fo-bm-label { font-size: 13px; letter-spacing: .06em; }
.fo-bm-row { display: flex; align-items: center; gap: 8px; margin: 8px 0 10px; flex-wrap: wrap; }
.fo-bm-code {
  flex: 1 1 auto;
  padding: 6px 10px 4px;
  background: var(--fo-sheet);
  color: var(--fo-ink);
  font-family: var(--fo-lat);
  font-size: 27px;
  line-height: 1.2;
  letter-spacing: .06em;
  border-radius: var(--fo-r2);
  text-align: center;
  user-select: all;
}
.fo-bm-copy {
  flex: 0 0 auto;
  min-height: 44px;
  min-width: 64px;
  padding: 0 14px;
  border: 1px solid var(--fo-sheet);
  background: var(--fo-ink);
  color: var(--fo-sheet);
  font: inherit;
  font-size: 15px;
  border-radius: var(--fo-r2);
  cursor: pointer;
}
.fo-bm-copy:hover { background: var(--fo-night); }
.fo-bm-copy.fo-is-done { background: var(--fo-sheet); color: var(--fo-ink); }
.fo-bm-gain { font-size: 16px; line-height: 1.6; font-weight: 700; }
.fo-bm-star { font-size: .8em; line-height: 0; }
.fo-bm-foot { margin-top: 6px; font-size: 13px; line-height: 1.6; }
.fo-bm-go {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  margin-top: 14px;
  padding: 8px 14px;
  background: var(--fo-sheet);
  color: var(--fo-ink);
  font-weight: 700;
  text-decoration: none;
  text-align: center;
  border-radius: var(--fo-r2);
}
.fo-bm-go:hover { background: var(--fo-paper); color: var(--fo-ink); }
.fo-bm-note { margin-top: 8px; font-size: 13.5px; line-height: 1.65; }

.fo-bm-art {
  margin: 26px 0 30px;
  padding: 20px 64px 20px 22px;
  clip-path: polygon(0 0, 100% 0, calc(100% - 24px) 50%, 100% 100%, 0 100%);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  column-gap: 22px;
  align-items: start;
}
.fo-bm-art .fo-bm-r { padding-top: 22px; }
.fo-bm-art .fo-bm-go { margin-top: 0; }

.fo-home-body { max-width: var(--fo-wide); margin: 0 auto; padding: 0 24px 56px; }
.fo-blk {
  display: grid;
  grid-template-columns: 300px minmax(0, var(--fo-read));
  column-gap: 48px;
  padding: 34px 0 30px;
  border-top: 3px double var(--fo-brown);
}
.fo-blk > * { grid-column: 2; }
.fo-blk > h2 { grid-column: 1; grid-row: 1 / span 6; align-self: start; }
.fo-blk-alt { background: linear-gradient(to right, transparent 0, transparent 300px, var(--fo-sheet) 300px); padding-left: 0; }
.fo-blk-alt > * { padding-right: 24px; }
.fo-blk-alt > :not(h2) { padding-left: 24px; }
.fo-blk h2, .fo-index-h {
  margin: 0;
  font-size: 26px;
  line-height: 1.35;
  font-weight: 800;
  line-break: strict;
}
.fo-blk p, .fo-blk li { max-width: var(--fo-read); }
.fo-blk p { margin: 0 0 14px; }
.fo-blk ul, .fo-blk ol { margin: 0 0 16px; padding: 0; list-style: none; }
.fo-blk ul > li { position: relative; padding: 7px 0 7px 20px; border-bottom: 1px dotted var(--fo-line); }
.fo-blk ul > li::before { content: ""; position: absolute; left: 2px; top: 1.05em; width: 8px; height: 8px; background: var(--fo-cob); border-radius: 1px; }
.fo-blk ol { counter-reset: fo-step; }
.fo-blk ol > li { counter-increment: fo-step; position: relative; padding: 8px 0 8px 44px; border-bottom: 1px dotted var(--fo-line); }
.fo-blk ol > li::before {
  content: counter(fo-step);
  position: absolute;
  left: 0;
  top: 4px;
  font-family: var(--fo-lat);
  font-size: 28px;
  line-height: 1.2;
  color: var(--fo-brown);
}

.fo-index { padding: 34px 0 10px; border-top: 3px double var(--fo-brown); display: grid; grid-template-columns: 300px minmax(0, 1fr); column-gap: 48px; }
.fo-index-ul { list-style: none; margin: 0; padding: 0; columns: 2; column-gap: 40px; }
.fo-index-li { break-inside: avoid; }
.fo-index-a {
  display: flex;
  align-items: baseline;
  gap: 6px;
  min-height: 44px;
  padding: 10px 0;
  color: var(--fo-ink);
  text-decoration: none;
}
.fo-index-a:hover .fo-index-name { text-decoration: underline; text-decoration-color: var(--fo-cob); }
.fo-index-name { font-weight: 700; }
.fo-index-dots { flex: 1; border-bottom: 1px dotted var(--fo-brown); transform: translateY(-5px); min-width: 16px; }
.fo-index-note { color: var(--fo-brown); font-size: 14px; }

.fo-crumbs { margin-bottom: 10px; }
.fo-crumbs-ol { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; align-items: center; font-size: 14px; }
.fo-crumbs-ol li { display: inline-flex; align-items: center; }
.fo-crumbs-ol li + li::before { content: "›"; padding: 0 8px; color: var(--fo-brown); }
.fo-crumbs-a { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; min-width: 44px; color: var(--fo-brown); }
.fo-crumbs-here { color: var(--fo-ink); }

.fo-art-wrap, .fo-listwrap { max-width: var(--fo-wide); margin: 0 auto; padding: 14px 24px 56px; }
.fo-art-head { max-width: 62em; margin-bottom: 18px; }
.fo-art-h1 {
  margin: 4px 0 12px;
  font-size: clamp(28px, 3.6vw, 44px);
  line-height: 1.28;
  font-weight: 800;
  line-break: strict;
}
.fo-byline { display: flex; flex-wrap: wrap; gap: 6px 22px; font-size: 14px; color: var(--fo-brown); }

.fo-notice { max-width: 46em; margin: 0 0 22px; background: var(--fo-sheet); border: 1px solid var(--fo-ink); border-radius: var(--fo-r2); }
.fo-notice-bar { background: var(--fo-night); color: var(--fo-sheet); font-size: 14px; font-weight: 700; padding: 6px 14px; letter-spacing: .08em; }
.fo-notice-body { padding: 12px 14px 12px; font-size: 15px; line-height: 1.75; }
.fo-notice-line + .fo-notice-line { margin-top: 6px; }
.fo-notice-meta { margin-top: 8px; font-size: 14px; color: var(--fo-brown); }
.fo-notice-a { color: var(--fo-cob-deep); }

.fo-cover { max-width: 46em; margin: 0 0 26px; }
.fo-cover-img { display: block; width: 100%; border: 1px solid var(--fo-line); border-radius: var(--fo-r2); }
.fo-cover-cap { margin-top: 6px; font-size: 14px; color: var(--fo-brown); }

.fo-art-grid { display: grid; grid-template-columns: 236px minmax(0, var(--fo-read)); column-gap: 52px; align-items: start; }
.fo-toc { position: sticky; top: 16px; background: var(--fo-sheet); border: 1px solid var(--fo-line); border-radius: var(--fo-r2); padding: 6px 4px 8px 12px; }
.fo-toc-sum { min-height: 44px; display: flex; align-items: center; font-weight: 700; cursor: pointer; }
.fo-toc-ol { list-style: none; margin: 0; padding: 0; }
.fo-toc-a { display: flex; gap: 10px; align-items: baseline; min-height: 44px; padding: 8px 6px 8px 0; color: var(--fo-ink); text-decoration: none; font-size: 14.5px; line-height: 1.5; border-top: 1px dotted var(--fo-line); }
.fo-toc-a:hover .fo-toc-t { text-decoration: underline; text-decoration-color: var(--fo-cob); }
.fo-toc-n { flex: none; width: 22px; height: 22px; display: inline-flex; align-items: center; justify-content: center; border-radius: 22px 0 0 22px; background: var(--fo-brown); color: var(--fo-sheet); font-family: var(--fo-lat); font-size: 13px; line-height: 1; transform: translateY(3px); }

.fo-art { font-size: 17px; line-height: 1.9; min-width: 0; }
.fo-art > * { max-width: var(--fo-read); }
.fo-art p { margin: 0 0 16px; }
.fo-art h2 {
  margin: 40px 0 14px;
  padding-top: 16px;
  border-top: 3px double var(--fo-line);
  font-size: 26px;
  line-height: 1.4;
  font-weight: 800;
  line-break: strict;
  scroll-margin-top: 16px;
}
.fo-art h3 { margin: 26px 0 8px; font-size: 19px; line-height: 1.5; scroll-margin-top: 16px; }
.fo-art ul, .fo-art ol { margin: 0 0 18px; padding-left: 1.4em; }
.fo-art li { margin: 4px 0; }
.fo-art li::marker { color: var(--fo-brown); }
.fo-art blockquote { margin: 0 0 18px; padding: 8px 16px; border-left: 4px solid var(--fo-cob); background: var(--fo-sheet); }
.fo-art code { font-family: Consolas, "Courier New", monospace; font-size: .9em; background: var(--fo-sheet); padding: 1px 5px; border: 1px solid var(--fo-line); border-radius: var(--fo-r2); word-break: break-all; }
.fo-art strong { font-weight: 800; }

.fo-shot { margin: 24px 0 26px; }
.fo-shot-img { display: block; border: 1px solid var(--fo-brown); border-radius: var(--fo-r2); background: var(--fo-night); }
.fo-shot-cap { margin-top: 8px; font-size: 14px; line-height: 1.65; color: var(--fo-brown); }

.fo-tbl-wrap { max-width: var(--fo-read); overflow-x: auto; margin: 0 0 22px; border: 1px solid var(--fo-line); border-radius: var(--fo-r2); background: var(--fo-sheet); }
.fo-tbl { width: 100%; border-collapse: collapse; font-size: 15px; line-height: 1.65; }
.fo-tbl th { background: var(--fo-ink); color: var(--fo-sheet); text-align: left; font-weight: 700; padding: 9px 12px; white-space: nowrap; }
.fo-tbl td { padding: 9px 12px; border-top: 1px solid var(--fo-line); vertical-align: top; }
.fo-tbl tbody tr:nth-child(even) td { background: rgba(243, 235, 198, .55); }

.fo-faq { max-width: 46em; margin: 40px 0 0; padding-top: 18px; border-top: 3px double var(--fo-brown); }
.fo-faq-h { margin: 0 0 12px; font-size: 24px; line-height: 1.4; }
.fo-faq-dl { margin: 0; }
.fo-faq-q { position: relative; margin: 18px 0 6px; padding-left: 34px; font-weight: 700; font-size: 17px; line-height: 1.6; }
.fo-faq-q::before { content: "问"; position: absolute; left: 0; top: 1px; width: 24px; height: 24px; display: flex; align-items: center; justify-content: center; background: var(--fo-cob); color: var(--fo-sheet); font-size: 13px; border-radius: 24px 0 0 24px; }
.fo-faq-a { margin: 0 0 0 34px; padding-bottom: 12px; border-bottom: 1px dotted var(--fo-line); font-size: 16px; line-height: 1.85; }

.fo-after { max-width: 46em; margin-top: 34px; padding: 18px 20px; background: var(--fo-sheet); border: 1px solid var(--fo-line); border-radius: var(--fo-r1); }
.fo-tags { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; margin-bottom: 12px; }
.fo-tags-k { font-size: 14px; color: var(--fo-brown); }
.fo-tags-ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.fo-tag { display: inline-flex; align-items: center; min-height: 32px; padding: 0 12px; border: 1px solid var(--fo-brown); border-radius: 16px 2px 2px 16px; font-size: 14px; color: var(--fo-ink); }
a.fo-tag { min-height: 44px; text-decoration: none; }
.fo-after-line { font-size: 15px; line-height: 1.8; }
.fo-after-line + .fo-after-line { margin-top: 6px; }
.fo-after-a { display: inline-block; padding: 9px 0; }

.fo-list-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; border-bottom: 3px double var(--fo-ink); padding-bottom: 8px; max-width: 46em; }
.fo-list-h1 { margin: 0; font-size: clamp(32px, 4.4vw, 54px); line-height: 1.2; font-weight: 800; line-break: strict; }
.fo-list-count { font-size: 15px; color: var(--fo-brown); white-space: nowrap; }
.fo-list-intro { max-width: var(--fo-read); margin: 16px 0 22px; font-size: 16.5px; }
.fo-list-intro p { margin: 0 0 12px; }
.fo-list { list-style: none; margin: 0; padding: 0; max-width: 46em; }
.fo-list-li { padding: 16px 0; border-bottom: 1px dotted var(--fo-brown); }
.fo-list-a { display: inline-block; padding: 6px 0; font-size: 20px; font-weight: 700; color: var(--fo-ink); text-decoration-color: var(--fo-cob); }
.fo-list-d { font-size: 15px; line-height: 1.75; }
.fo-list-m { margin-top: 4px; font-size: 13.5px; color: var(--fo-brown); }
.fo-list-empty { padding: 18px 0; color: var(--fo-brown); }
.fo-pages { display: flex; gap: 18px; align-items: center; flex-wrap: wrap; margin-top: 18px; font-size: 15px; }
.fo-pages-a { display: inline-flex; align-items: center; min-height: 44px; }
.fo-term-syn { font-size: 14px; color: var(--fo-brown); margin-bottom: 8px; }
.fo-termlist { list-style: none; padding: 0; }
.fo-termlist-a { display: inline-flex; align-items: center; min-height: 44px; margin-right: 10px; }

.fo-desk { max-width: 50em; margin: 0 auto; padding: 14px 24px 56px; }
.fo-desk-head { border-bottom: 3px double var(--fo-ink); padding-bottom: 8px; margin-bottom: 20px; display: flex; align-items: baseline; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.fo-desk-h1 { margin: 0; font-size: clamp(30px, 4vw, 48px); line-height: 1.22; font-weight: 800; line-break: strict; }
.fo-desk-when { font-size: 14px; color: var(--fo-brown); }
.fo-desk-body { font-size: 16.5px; line-height: 1.9; max-width: var(--fo-read); }
.fo-desk-body p { margin: 0 0 14px; }
.fo-desk-body h2 { margin: 30px 0 10px; font-size: 21px; line-height: 1.45; padding-left: 12px; border-left: 4px solid var(--fo-cob); }
.fo-desk-body h3 { margin: 0 0 8px; font-size: 18px; }
.fo-desk-body ul { padding-left: 1.3em; margin: 0 0 14px; }
.fo-desk-body li { margin: 4px 0; }
.fo-desk-body li::marker { color: var(--fo-brown); }
.fo-fn { margin: -4px 0 16px; font-size: 14px; line-height: 1.7; color: var(--fo-brown); }
.fo-desk-two { max-width: none; }
.fo-desk-two > p, .fo-desk-two > h2, .fo-desk-two > ul { max-width: var(--fo-read); }
.fo-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 0; margin: 18px 0 8px; border: 1px solid var(--fo-ink); border-radius: var(--fo-r2); background: var(--fo-sheet); }
.fo-col { padding: 16px 18px 6px; }
.fo-col + .fo-col { border-left: 3px double var(--fo-ink); }
.fo-col h3 { padding-bottom: 6px; border-bottom: 1px solid var(--fo-line); }
.fo-col-yes h3 { color: var(--fo-cob-deep); }
.fo-col-no h3 { color: var(--fo-brown); }
.fo-col ul { padding-left: 1.2em; font-size: 15.5px; line-height: 1.8; }

.fo-seek-form { margin: 8px 0 14px; }
.fo-seek-label { display: block; font-size: 14px; color: var(--fo-brown); margin-bottom: 6px; }
.fo-seek-row { display: flex; gap: 8px; max-width: 34em; }
.fo-seek-in { flex: 1; min-width: 0; min-height: 48px; padding: 8px 12px; font: inherit; font-size: 17px; color: var(--fo-ink); background: var(--fo-sheet); border: 2px solid var(--fo-ink); border-radius: var(--fo-r2); }
.fo-seek-btn { min-height: 48px; min-width: 64px; padding: 0 18px; font: inherit; font-size: 17px; font-weight: 700; color: var(--fo-sheet); background: var(--fo-cob); border: 0; border-radius: var(--fo-r2); cursor: pointer; }
.fo-seek-state { min-height: 1.6em; font-size: 15px; color: var(--fo-brown); }
.fo-seek-out { list-style: none; margin: 10px 0 0; padding: 0; max-width: 46em; }
.fo-seek-li { padding: 10px 0; border-bottom: 1px dotted var(--fo-brown); }
.fo-seek-a { display: inline-flex; align-items: center; min-height: 44px; font-size: 18px; font-weight: 700; color: var(--fo-ink); text-decoration-color: var(--fo-cob); }
.fo-seek-d { font-size: 15px; line-height: 1.7; }

.fo-lost { position: relative; padding-top: 40px; }
.fo-lost-letter { font-family: var(--fo-lat); font-size: 160px; line-height: 1; color: var(--fo-line); }
.fo-lost-say { margin: 16px 0 12px; font-size: 17px; max-width: 30em; }
.fo-lost-ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 10px; }
.fo-lost-a { display: inline-flex; align-items: center; min-height: 44px; padding: 0 16px; border: 1px solid var(--fo-ink); border-radius: var(--fo-r2); background: var(--fo-sheet); color: var(--fo-ink); text-decoration: none; }
.fo-lost-a:hover { background: var(--fo-ink); color: var(--fo-sheet); }

.fo-foot { background: var(--fo-ink); color: var(--fo-sheet); margin-top: 20px; }
.fo-foot-in { max-width: var(--fo-wide); margin: 0 auto; padding: 30px 24px 26px; display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 14px 40px; }
.fo-foot-brand { color: var(--fo-sheet); }
.fo-foot-brand .fo-mark-page { fill: var(--fo-paper); }
.fo-foot-brand .fo-mark-rule { stroke: var(--fo-ink); }
.fo-foot-say { font-size: 14.5px; line-height: 1.8; }
.fo-foot-inl { display: inline-block; padding: 12px 2px; margin: -12px 0; color: var(--fo-paper); }
.fo-foot-list { grid-column: 2; list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 0 4px; }
.fo-foot-a { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; min-width: 48px; padding: 0 10px; color: var(--fo-sheet); font-size: 14.5px; }
.fo-foot-a:hover { color: var(--fo-paper); background: rgba(251, 247, 227, .08); }
.fo-foot-a:first-child { padding-left: 0; }
.fo-foot-copy { grid-column: 2; font-family: var(--fo-lat); font-size: 13px; color: var(--fo-line); }

@media (max-width: 1100px) {
  .fo-hero { grid-template-columns: minmax(0, 1fr) 470px; }
  .fo-leaf { min-height: 400px; padding: 14px 12px 18px; }
  .fo-leaf-r { padding-right: 34px; }
  .fo-bm-home { margin-right: 40px; width: 222px; }
  .fo-blk, .fo-index { grid-template-columns: 220px minmax(0, 1fr); column-gap: 32px; }
  .fo-blk-alt { background: linear-gradient(to right, transparent 0, transparent 220px, var(--fo-sheet) 220px); }
}

@media (max-width: 900px) {
  .fo-hero {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas: "text" "bm" "pick" "book";
    grid-template-rows: auto;
    row-gap: 18px;
    padding: 16px 16px 28px;
  }
  .fo-bm-home { grid-area: bm; justify-self: stretch; width: auto; margin: 0; padding: 14px 16px 30px; }
  .fo-pick { grid-area: pick; margin-top: 6px; max-width: none; }
  .fo-book { grid-area: book; margin-top: 4px; }
  .fo-blk, .fo-index { grid-template-columns: minmax(0, 1fr); }
  .fo-blk > h2 { grid-column: 1; grid-row: auto; margin-bottom: 12px; }
  .fo-blk > * { grid-column: 1; }
  .fo-blk-alt { background: var(--fo-sheet); padding-left: 16px; padding-right: 16px; margin: 0 -16px; }
  .fo-blk-alt > *, .fo-blk-alt > :not(h2) { padding-left: 0; padding-right: 0; }
  .fo-index-h { margin-bottom: 8px; }
  .fo-art-grid { grid-template-columns: minmax(0, 1fr); }
  .fo-toc { position: static; margin-bottom: 18px; }
  .fo-foot-in { grid-template-columns: minmax(0, 1fr); }
  .fo-foot-list, .fo-foot-copy { grid-column: 1; }
  .fo-home-body { padding: 0 16px 40px; }
  .fo-art-wrap, .fo-listwrap, .fo-desk { padding-left: 16px; padding-right: 16px; }
}

@media (max-width: 640px) {
  body { font-size: 15.5px; }
  .fo-top-in { padding: 4px 16px 0; gap: 0; }
  .fo-nav { width: 100%; margin: 0 -8px; }
  .fo-nav-ul { gap: 0; }
  .fo-nav-a { padding: 0 9px; font-size: 15px; }
  .fo-mark { height: 32px; }
  .fo-hero { row-gap: 14px; padding-top: 12px; }
  .fo-kicker { font-size: 14px; }
  .fo-h1 { margin: 2px 0 8px; }
  .fo-lede { font-size: 15.5px; line-height: 1.65; }
  .fo-bm-home { padding-bottom: 26px; }
  .fo-pick-by { position: absolute; top: -11px; right: 12px; margin: 0; padding: 0 6px; background: var(--fo-sheet); line-height: 1.6; }
  .fo-bm-code { font-size: 24px; }
  .fo-bm-gain { font-size: 15px; }
  .fo-pick { padding: 18px 14px 12px; }
  .fo-pick-link { font-size: 17px; }
  .fo-pick-why { font-size: 15px; line-height: 1.65; }
  .fo-book { grid-template-columns: minmax(0, 1fr); }
  .fo-leaf-l { border-right: 0; border-bottom: 1px solid var(--fo-line); min-height: 0; }
  .fo-leaf-r { min-height: 0; }
  .fo-index-ul { columns: 1; }
  .fo-blk h2, .fo-index-h { font-size: 22px; }
  .fo-hseg { display: inline-block; }
  .fo-art { font-size: 16px; line-height: 1.85; }
  .fo-art h2 { font-size: 22px; margin-top: 32px; }
  .fo-bm-art .fo-bm-r { padding-top: 0; }
  .fo-bm-art { display: block; padding: 18px 16px 22px; clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), 50% 100%, 0 calc(100% - 14px)); padding-bottom: 30px; }
  .fo-tbl-wrap { border: 0; background: transparent; overflow: visible; }
  .fo-tbl, .fo-tbl tbody, .fo-tbl tr, .fo-tbl td { display: block; width: 100%; }
  .fo-tbl thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
  .fo-tbl tr { margin-bottom: 12px; border: 1px solid var(--fo-line); border-radius: var(--fo-r2); background: var(--fo-sheet); }
  .fo-tbl td { border-top: 1px dotted var(--fo-line); padding: 8px 12px; }
  .fo-tbl td:first-child { border-top: 0; font-weight: 700; background: rgba(243, 235, 198, .7); }
  .fo-tbl tbody tr:nth-child(even) td { background: transparent; }
  .fo-tbl tbody tr td:first-child { background: rgba(243, 235, 198, .7); }
  .fo-tbl td::before { content: attr(data-k); display: block; font-size: 13px; font-weight: 400; color: var(--fo-brown); }
  .fo-cols { grid-template-columns: minmax(0, 1fr); }
  .fo-col + .fo-col { border-left: 0; border-top: 3px double var(--fo-ink); }
  .fo-list-head, .fo-desk-head { flex-direction: column; gap: 4px; }
  .fo-lost-letter { font-size: 110px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
}

@media print {
  .fo-top, .fo-foot, .fo-toc, .fo-bm { display: none; }
  body { background: #fff; }
}