/* 刘逸 · 结扎：解剖图版的白纸与褐黑的墨；颜色只有血的两种红——动脉的猩红、静脉的暗红。字是细的，像刻线。 */
.c-liu-yi {
  --bg: #f4efe8; --paper: #fbf8f4; --ink: #221918; --ink-2: #4f4341; --ink-3: #6f615e; --rule: rgba(34, 25, 24, .15);
  --acc: #a8232c; --acc-ink: #fff8f4; --art: #c3262f; --ven: #5a1626;
  --head: "Noto Serif SC", "Songti SC", serif; --body: "Noto Serif SC", "Songti SC", serif; --lat: "Spectral", Georgia, serif;
  --bar-bg: rgba(244, 239, 232, .93); --chip-bg: rgba(255, 255, 255, .6); --chip-ring: #f4efe8;
  background: var(--bg);
}
.c-liu-yi .dlg { --dlg-bg: #f3ece6; --dlg-paper: #fffcf9; --dlg-me: #5a1626; --dlg-me-ink: #fff4f2; --dlg-acc: #a8232c; }
.c-liu-yi ::selection { background: rgba(195, 38, 47, .2); }
.c-liu-yi .c3bar { border-bottom: 1px solid var(--rule); }
.c-liu-yi .c3bar__prog { height: 3px; bottom: -2px; background: linear-gradient(90deg, var(--ven), var(--art)); }
.c-liu-yi a { text-decoration-color: rgba(168, 35, 44, .45); text-underline-offset: 3px; }
.c-liu-yi a:hover { color: var(--acc); }
.c-liu-yi .mk { color: var(--acc); letter-spacing: .14em; }
.ly-lat { font-family: var(--lat); font-style: italic; }

/* 目录：一条闭合的循环。右边动脉往下，左边静脉带着瓣膜往上回到心脏 */
.c-liu-yi .c3toc { right: 12px; }
.ly-loop { position: relative; width: 64px; height: calc(var(--n) * 60px); }
.ly-loop__svg { position: absolute; inset: 0; width: 64px; height: 100%; overflow: visible; }
.ly-loop__a, .ly-loop__v { fill: none; stroke-width: 2.2; stroke-linecap: round; transition: stroke 1.8s; }
.ly-loop__a { stroke: var(--art); }
.ly-loop__v { stroke: var(--ven); }
.ly-loop__valves path { fill: none; stroke: var(--ven); stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; transition: stroke 1.8s; }
.ly-one .ly-loop__v, .ly-one .ly-loop__valves path { stroke: var(--art); }
.ly-loop__heart { fill: var(--art); }
.ly-loop__dot { fill: var(--art); stroke: var(--bg); stroke-width: 1.6; }
.c-liu-yi .c3toc .ly-loop ol { position: absolute; inset: 0; display: block; }
.c-liu-yi .c3toc .ly-loop li { position: absolute; left: 0; right: 0; top: calc(var(--k) * 60px + 10px); height: 40px; }
.c-liu-yi .c3toc .ly-loop a { position: absolute; right: -11px; top: 0; width: 40px; height: 40px; display: block; color: var(--ink-3); }
.c-liu-yi .c3toc .ly-loop a::after { display: none; }
.c-liu-yi .c3toc .ly-loop a i { position: absolute; left: 50%; top: 50%; width: 9px; height: 9px; margin: -4.5px 0 0 -4.5px; border-radius: 50%; background: var(--bg); border: 1.6px solid var(--art); transition: transform .3s; }
.c-liu-yi .c3toc .ly-loop li:first-child a i { opacity: 0; }
.c-liu-yi .c3toc .ly-loop a b { display: none; }
.c-liu-yi .c3toc .ly-loop a span { position: absolute; right: 64px; top: 50%; max-width: none; transform: translate(6px, -50%); padding: 6px 10px; white-space: nowrap;
  background: var(--paper); border: 1px solid var(--ink); font-size: 13px; color: var(--ink); opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s; }
.c-liu-yi .c3toc .ly-loop a:hover span, .c-liu-yi .c3toc .ly-loop a:focus-visible span { opacity: 1; transform: translate(0, -50%); }
.c-liu-yi .c3toc .ly-loop a[aria-current="true"] i { transform: scale(1.35); }

/* 首屏 */
.c-liu-yi .c3hero { padding: calc(var(--bar) + 26px) clamp(16px, 5vw, 72px) 36px; }
.ly-hero { max-width: 1240px; margin: 0 auto; display: grid; grid-template-columns: minmax(0, 320px) minmax(0, 1fr); grid-template-areas: "id arm" "row row" "go go"; gap: 20px 44px; }
.ly-id { grid-area: id; align-self: center; }
.ly-k { margin: 0; font-size: 13px; letter-spacing: .16em; color: var(--acc); }
.ly-n { margin: 6px 0 0; font-family: var(--head); font-weight: 200; font-size: clamp(76px, 8.4vw, 124px); line-height: 1.02; letter-spacing: .1em; color: var(--ink); }
.ly-en { margin: 8px 0 14px; display: flex; flex-wrap: wrap; gap: 4px 14px; align-items: baseline; font-family: var(--lat); font-weight: 300; font-size: 24px; color: var(--ink-2); }
.ly-en span + span { font-size: 17px; color: var(--ink-3); }
.ly-en::after { content: ""; flex-basis: 100%; height: 0; }
.ly-who { position: relative; margin: 0 0 6px; padding-top: 14px; font-size: 18px; font-weight: 600; line-height: 1.65; }
.ly-who::before { content: ""; position: absolute; left: 0; top: 0; width: 46px; height: 5px; border-radius: 1px; background: linear-gradient(90deg, var(--ven), var(--art)); }
.ly-now { margin: 0; font-size: 14px; line-height: 1.75; color: var(--ink-2); }

/* 首屏的手臂：Figura 1 与可以拖动的手 */
.ly-arm { grid-area: arm; margin: 0; }
.ly-arm__win { position: relative; overflow: hidden; }
.ly-arm__stage { position: relative; }
.ly-arm__stage img { display: block; width: 100%; height: auto; }
.ly-arm__svg { position: absolute; inset: 0; width: 100%; height: 100%; touch-action: pan-y; cursor: pointer; -webkit-user-select: none; user-select: none; }
.no-js .ly-arm__svg { display: none; }
.ly-erase line { stroke: var(--bg); stroke-linecap: round; }
.ly-blood { mix-blend-mode: multiply; }
.ly-blood line { stroke: #b3202a; stroke-linecap: round; }
.ly-nodes ellipse { fill: rgba(179, 32, 42, .5); stroke: #8c1520; stroke-width: 1.5; mix-blend-mode: multiply; }
.ly-hand { pointer-events: none; filter: drop-shadow(0 6px 8px rgba(34, 25, 24, .18)); }
.ly-hand--m { opacity: .96; }
.ly-hand.is-shake { animation: ly-shake .32s ease-in-out 2; }
@keyframes ly-shake { 25% { translate: 5px 0; } 75% { translate: -5px 0; } }
.ly-arm__bar { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 10px 16px; margin-top: 6px; }
.ly-arm__k { margin: 0; font-size: 14px; color: var(--ink-2); }
.ly-arm__k .ly-lat { margin-right: 10px; font-size: 17px; color: var(--acc); }
.ly-arm__ctl { display: flex; flex-wrap: wrap; gap: 8px; }
.ly-arm__ctl button, .ly-seg button { min-height: 44px; padding: 8px 14px; border: 1px solid var(--ink); border-radius: 0; background: transparent; color: var(--ink);
  font: inherit; font-size: 14.5px; cursor: pointer; touch-action: manipulation; }
.ly-arm__ctl button:hover:not(:disabled) { background: var(--ink); color: var(--bg); }
.ly-arm__ctl button[data-act="heart"] { border-color: var(--acc); color: var(--acc); }
.ly-arm__ctl button[data-act="heart"]:hover { background: var(--acc); color: var(--acc-ink); }
.ly-arm__ctl button:disabled { opacity: .4; cursor: default; }
.no-js .ly-arm__ctl, .no-js .ly-arm__out, .no-js .ly-arm__k { display: none; }
.ly-arm__out { margin: 8px 0 0; min-height: 3.5em; font-size: 15px; line-height: 1.75; color: var(--ink); }
.ly-arm figcaption { margin-top: 2px; font-size: 12.5px; line-height: 1.65; color: var(--ink-3); }

.ly-row { grid-area: row; display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, .9fr) minmax(0, 1.15fr); gap: 30px; padding-top: 16px; border-top: 1px solid var(--ink); }
.ly-rel p:last-child { margin: 0; font-size: 15px; line-height: 1.85; }
.c-liu-yi .c3-books li { border-bottom: 0; font-size: 15px; }
.c-liu-yi .c3-books small { font-size: 12.5px; color: var(--ink-3); }
.ly-qs ol { list-style: none; margin: 0; padding: 0; counter-reset: q; }
.ly-qs a { display: grid; grid-template-columns: 46px minmax(0, 1fr); gap: 10px; align-items: baseline; min-height: 40px; padding: 7px 0; border-bottom: 1px solid var(--rule); text-decoration: none; font-size: 15.5px; line-height: 1.5; }
.ly-qs a b { font-family: var(--lat); font-weight: 400; font-size: 17px; color: var(--acc); }
.ly-qs a:hover span { color: var(--acc); }
.ly-go { grid-area: go; margin: 0; }
.c-liu-yi .c3-btn { border-radius: 0; min-height: 42px; }
.c-liu-yi .c3-btn--go { background: var(--acc); border-color: var(--acc); color: var(--acc-ink); }
.c-liu-yi .c3-btn--go:hover { color: var(--acc-ink); background: var(--ven); border-color: var(--ven); }
.c-liu-yi .c3-btn--deep { background: transparent; color: var(--ink); border-color: var(--ink); }
.ly-more { max-width: 1240px; margin: 40px auto 0; padding-top: 18px; border-top: 1px solid var(--rule); display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr); gap: 30px; }
.c-liu-yi .c3-feats { margin: 0; padding: 0; list-style: none; }
.c-liu-yi .c3-feats li { position: relative; padding: 5px 0 5px 18px; font-size: 14.5px; line-height: 1.65; border-bottom: 1px solid var(--rule); }
.c-liu-yi .c3-feats li::before { content: ""; position: absolute; left: 2px; top: 14px; width: 7px; height: 7px; border-radius: 50%; background: var(--art); }
.ly-facts { margin: 0; font-size: 14.5px; line-height: 1.85; color: var(--ink-2); }
.c-liu-yi .c3-links li { font-size: 14px; border-bottom: 1px solid var(--rule); }

/* 每一问：标题横贯一页，下面是图与文；标题左边一段血管 */
.c-liu-yi .c3q { display: block; padding: calc(var(--bar) + 40px) clamp(16px, 5vw, 72px) 64px; }
.ly-q { max-width: 1240px; margin: 0 auto; }
.ly-q__h { position: relative; margin-bottom: 28px; padding: 0 0 18px 28px; border-bottom: 1px solid var(--ink); }
.ly-q__h::before { content: ""; position: absolute; left: 0; top: 8px; bottom: 22px; width: 4px; border-radius: 2px; background: linear-gradient(180deg, var(--art), var(--ven)); }
.c-liu-yi .c3q__when b { font-family: var(--lat); font-weight: 300; font-size: 36px; color: var(--acc); }
.c-liu-yi .c3q__when span { font-size: 14px; }
.c-liu-yi .c3q__q { margin: 4px 0 0; font-weight: 300; font-size: clamp(32px, 4.3vw, 60px); line-height: 1.22; letter-spacing: .03em; }
.ly-q__b { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: clamp(28px, 4.6vw, 76px); align-items: start; }
.c-liu-yi .c3q:nth-of-type(odd) .ly-q__art { order: 2; }
.ly-q__txt { max-width: 680px; }
.c-liu-yi .c3q__lede { font-size: 16.5px; line-height: 1.95; text-align: justify; }
.c-liu-yi .c3-quote { margin: 18px 0; padding: 2px 0 2px 18px; border-left: 3px solid var(--art); }
.c-liu-yi .c3-quote blockquote p { font-weight: 600; }
.c-liu-yi .c3-tags li { border-radius: 0; border-color: var(--rule); background: var(--paper); }
.c-liu-yi .talk { border-radius: 30px; background: var(--paper); }
.c-liu-yi .c3-ask { border-radius: 0; border-color: rgba(34, 25, 24, .3); background: var(--paper); }

/* 图 */
.ly-fig { margin: 0; }
.ly-fig img { display: block; width: 100%; height: auto; mix-blend-mode: multiply; }
.ly-fig figcaption { margin-top: 8px; font-size: 13px; line-height: 1.65; color: var(--ink-3); }
.ly-fig figcaption b { margin-right: 8px; padding: 0 6px; border: 1px solid var(--acc); color: var(--acc); font-weight: 400; font-size: 12px; }
.ly-fig--tall img { width: auto; max-width: 100%; max-height: 62vh; margin: 0 auto; }
.ly-fig--title img { width: auto; max-width: 100%; max-height: 52vh; margin: 0 auto; }

/* 机关二：两种血 */
.ly-bl, .ly-ed { padding: 16px 18px 14px; border: 1px solid var(--ink); background: var(--paper); box-shadow: 8px 8px 0 rgba(168, 35, 44, .08); }
.ly-mk { margin: 0 0 6px; font-size: 13px; letter-spacing: .16em; color: var(--acc); }
.ly-bl svg { display: block; width: 100%; height: auto; overflow: visible; font-family: var(--body); }
.ly-fill { transition: fill 1.6s ease; }
.ly-tube--a .ly-fill { fill: var(--art); }
.ly-tube--v .ly-fill { fill: var(--ven); }
.ly-bl[data-st="2"] .ly-fill { fill: var(--acc); }
.ly-flowr { animation: ly-flow 2.2s linear infinite; }
.ly-flowr--v { animation-direction: reverse; }
@keyframes ly-flow { to { transform: translateX(40px); } }
.ly-bubs { transition: opacity 1.3s ease, transform 1.6s ease; }
.ly-bub { fill: #fff; stroke: rgba(255, 255, 255, .5); stroke-width: 2; animation: ly-bub 3.4s ease-in-out var(--d) infinite; }
@keyframes ly-bub { 0% { transform: translateX(-20px); opacity: 0; } 15% { opacity: .95; } 85% { opacity: .95; } 100% { transform: translateX(var(--x)); opacity: 0; } }
.ly-bl[data-st="1"] .ly-bubs, .ly-bl[data-st="2"] .ly-bubs { opacity: 0; transform: translateY(-26px); }
.ly-tl { font-size: 24px; fill: var(--ink); }
.ly-sp { font-size: 21px; fill: var(--art); transition: opacity 1s; }
.ly-bl:not([data-st="0"]) .ly-sp { opacity: 0; }
.ly-ticks, .ly-meas { opacity: 0; transition: opacity 1s ease 1.1s; }
.ly-bl[data-st="2"] .ly-ticks, .ly-bl[data-st="2"] .ly-meas { opacity: 1; }
.ly-meas { font-size: 21px; fill: var(--acc); }
.ly-seg { display: flex; flex-wrap: wrap; margin-top: 8px; }
.ly-seg button + button { border-left: 0; }
.ly-seg button[aria-pressed="true"] { background: var(--ink); color: var(--bg); }
.ly-out { margin: 10px 0 0; min-height: 3.6em; font-size: 14.5px; line-height: 1.75; color: var(--ink); }
.ly-out q { quotes: "“" "”"; color: var(--acc); }

/* 重译：两个中译本 */
.ly-tr { display: grid; grid-template-columns: minmax(0, .72fr) minmax(0, 1.28fr); gap: 22px; align-items: start; }
.ly-bars { list-style: none; display: flex; align-items: flex-end; gap: 3px; height: 54px; margin: 12px 0 6px; padding: 0; }
.ly-bars li { flex: 1 1 0; height: 100%; background: var(--ink); transition: flex-grow .9s ease, opacity .6s ease, margin .9s ease; }
.ly-bars .lt { flex-grow: 1.7; background: var(--art); }
.ly-bars .af { display: none; }
.ly-ed[data-ed="2007"] .ly-bars .lt { flex-grow: 0; opacity: 0; margin-left: -3px; }
.ly-bars__k { margin: 0; display: flex; flex-wrap: wrap; gap: 4px 16px; font-size: 12.5px; color: var(--ink-3); }
.ly-bars__k span::before { content: ""; display: inline-block; width: 10px; height: 10px; margin-right: 6px; vertical-align: -1px; background: var(--ink); }
.ly-bars__k .k2::before { background: var(--art); }
.ly-bars__k .k3 { display: none; }
.ly-ed[data-ed="2007"] .ly-bars__k .k2 { opacity: .35; }
.ly-terms { margin: 10px 0 0; padding-top: 6px; border-top: 1px dashed var(--rule); }
.ly-terms p { margin: 6px 0 0; display: flex; flex-wrap: wrap; gap: 4px 14px; align-items: baseline; font-size: 14.5px; }
.ly-terms b { flex-basis: 100%; font-weight: 400; font-size: 12.5px; color: var(--ink-3); }
.ly-terms span { display: inline-flex; gap: 6px; align-items: baseline; }
.ly-terms i { font-family: var(--lat); font-size: 15px; color: var(--ink-3); }
.ly-terms i::after { content: "→"; margin-left: 6px; font-style: normal; color: var(--acc); }

/* 灵魂：老师与学生的两条手臂，三个词 */
.ly-pair { display: grid; gap: 18px; }
.ly-fig--mini img { opacity: .96; }
.ly-three { margin: 4px 0 0; display: flex; flex-wrap: wrap; gap: 10px; }
.ly-three span { flex: 1 1 90px; display: flex; flex-direction: column; align-items: center; padding: 10px 8px 8px; border: 1px solid var(--ink); background: var(--paper); }
.ly-three b { font-weight: 300; font-size: 26px; letter-spacing: .08em; color: var(--acc); }
.ly-three i { font-family: var(--lat); font-size: 15px; color: var(--ink-3); }
.ly-three__n { margin: 0; font-size: 13.5px; line-height: 1.75; color: var(--ink-2); }

/* 进入视野：标题左边的血管从上往下充盈 */
.js .c-liu-yi .c3q .ly-q__h::before { transform-origin: 50% 0; transform: scaleY(0); transition: transform 1.2s cubic-bezier(.3, .7, .2, 1); }
.js .c-liu-yi .c3q.is-in .ly-q__h::before { transform: none; }

/* 结尾 */
.c-liu-yi .c3end { padding: calc(var(--bar) + 30px) clamp(16px, 5vw, 72px) 70px; }
.ly-end { max-width: 1240px; margin: 0 auto; }
.c-liu-yi .c3end h2 { font-weight: 300; letter-spacing: .04em; }
.c-liu-yi .c3-lin li { border-radius: 0; background: var(--paper); }
.ly-again { margin: 10px 0 0; }
.ly-again a { display: inline-flex; align-items: center; gap: 10px; min-height: 40px; font-size: 15px; color: var(--acc); }
.ly-again a::before { content: ""; width: 22px; height: 22px; border: 2px solid var(--art); border-radius: 50%; border-right-color: transparent; transform: rotate(-30deg); }

@media (min-width: 861px) and (max-width: 1400px) {
  .c-liu-yi .c3hero, .c-liu-yi .c3q, .c-liu-yi .c3end { padding-right: 84px; }
}
@media (max-width: 1100px) {
  .ly-hero { grid-template-columns: minmax(0, 270px) minmax(0, 1fr); gap: 18px 30px; }
  .ly-n { font-size: 80px; }
  .ly-row { gap: 22px; }
  .ly-rel p:last-child, .ly-qs a { font-size: 14.5px; }
  .ly-qs a { grid-template-columns: 40px minmax(0, 1fr); gap: 8px; }
  .ly-tr { grid-template-columns: minmax(0, 1fr); }
  .ly-fig--title img { max-height: 40vh; }
}
@media (max-width: 860px) {
  .ly-hero { grid-template-columns: minmax(0, 1fr); grid-template-areas: "id" "row" "go" "arm"; }
  .ly-arm { margin-top: 10px; }
  .ly-row { grid-template-columns: minmax(0, 1fr); gap: 18px; }
  .ly-more { grid-template-columns: minmax(0, 1fr); gap: 22px; }
  .ly-q__b { grid-template-columns: minmax(0, 1fr); gap: 22px; }
  .c-liu-yi .c3q:nth-of-type(odd) .ly-q__art { order: 0; }
  .ly-fig--tall img { max-height: 50vh; }
  .ly-fig--title img { max-height: 42vh; }
}
@media (max-width: 700px) {
  .ly-arm__win { aspect-ratio: 1190 / 522; }
  .ly-arm__stage { position: absolute; top: 0; left: calc(-120 / 1190 * 100%); width: calc(1600 / 1190 * 100%); }
}
@media (max-width: 560px) {
  .c-liu-yi .c3hero { padding-top: calc(var(--bar) + 16px); }
  .ly-n { font-size: 76px; }
  .ly-en { font-size: 20px; margin-bottom: 10px; }
  .ly-who { font-size: 17px; }
  .ly-arm__ctl { width: 100%; }
  .ly-arm__ctl button { flex: 1 1 0; padding: 8px 6px; }
  .c-liu-yi .c3q { padding-top: calc(var(--bar) + 22px); }
  .c-liu-yi .c3q__q { font-size: 30px; }
  .c-liu-yi .c3q__lede { font-size: 16px; text-align: left; }
  .ly-q__h { padding-left: 20px; margin-bottom: 20px; }
  .ly-bl, .ly-ed { padding: 14px 12px 12px; box-shadow: 5px 5px 0 rgba(168, 35, 44, .08); }
  .ly-seg button { flex: 1 1 auto; padding: 8px 8px; font-size: 14px; }
  .ly-three b { font-size: 22px; }
}
@media (prefers-reduced-motion: reduce) {
  .ly-flowr, .ly-bub { animation: none !important; }
}