/* 刘兵 · 克丽奥的眼镜：维米尔画室的颜色——珍珠灰的墙、群青、铅锡黄，窗光从左上来，地上是黑白方砖。
   类名前缀 lb-；所有规则挂在 .c-liu-bing 或 lb- 类上。 */
.c-liu-bing {
  --bg: #ece8df; --paper: #f8f6f0; --ink: #1b2233; --ink-2: #3f4759; --ink-3: #5c6375; --rule: rgba(27, 34, 51, .17);
  --acc: #23428a; --acc-ink: #f8f6f0; --gold: #c99a2e; --gold-2: #e9c766; --tile: #23252c;
  --head: "ZCOOL XiaoWei", "Noto Serif SC", serif; --body: "Noto Serif SC", "Songti SC", serif; --lat: "Cormorant Garamond", "Noto Serif SC", serif; --latsc: "Cormorant SC", "Cormorant Garamond", serif;
  --bar-bg: rgba(236, 232, 223, .93); --chip-bg: rgba(248, 246, 240, .9); --chip-ring: #f8f6f0;
  background-color: var(--bg);
}
.c-liu-bing .dlg { --dlg-bg: #ebe7de; --dlg-paper: #fbfaf6; --dlg-ink: #1b2233; --dlg-ink-2: #3f4759; --dlg-ink-3: #5f6678;
  --dlg-me: #23428a; --dlg-me-ink: #f8f6f0; --dlg-acc: #23428a; --dlg-rule: rgba(27, 34, 51, .14); }
.c-liu-bing .c3bar { border-bottom: 1px solid var(--rule); }
.c-liu-bing .c3bar__t a, .c-liu-bing .c3bar__t span { font-family: var(--body); }
.c-liu-bing .c3bar__prog { background: var(--acc); height: 2px; }
.c-liu-bing .mk { color: var(--acc); letter-spacing: .16em; font-weight: 600; }
/* 窗光：每一屏的左上角 */
.c-liu-bing .c3hero, .c-liu-bing .c3q, .c-liu-bing .c3end { background-image: radial-gradient(ellipse 62% 54% at 0% 0%, rgba(255, 251, 236, .9), rgba(255, 251, 236, 0) 72%); }

/* ---------- 页边的镜片（目录） ---------- */
.c-liu-bing .c3toc { right: 14px; }
.lb-toc { gap: 10px !important; }
.c-liu-bing .c3toc a { gap: 10px; color: var(--ink-3); }
.c-liu-bing .c3toc a::after { width: 15px; height: 15px; border: 1.5px solid var(--ink-2); background: radial-gradient(circle at 35% 30%, rgba(255, 255, 255, .9), rgba(255, 255, 255, .25) 60%); }
.c-liu-bing .c3toc a span { font-size: 12.5px; }
.c-liu-bing .c3toc a span b { margin-right: 6px; font-weight: 700; color: var(--acc); }
.c-liu-bing .c3toc a[aria-current="true"] { color: var(--ink); }
.c-liu-bing .c3toc a[aria-current="true"]::after { background: radial-gradient(circle at 35% 30%, #6d8fd6, var(--acc) 65%); border-color: var(--acc); box-shadow: 0 0 0 3px rgba(35, 66, 138, .18); }
.c-liu-bing .c3toc a:hover span, .c-liu-bing .c3toc a:focus-visible span { background: rgba(248, 246, 240, .95); padding: 1px 6px; }
@media (min-width: 1200px) {
  .c-liu-bing .c3hero, .c-liu-bing .c3q, .c-liu-bing .c3end { padding-right: max(120px, calc((100vw - 1200px) / 2)); padding-left: max(56px, calc((100vw - 1200px) / 2 - 30px)); }
}

/* ---------- 首屏：画室 ---------- */
.c-liu-bing .c3hero { padding-top: calc(var(--bar) + 24px); padding-bottom: 36px; }
.lb-hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.02fr); gap: clamp(24px, 4.2vw, 64px); align-items: start; max-width: 1200px; margin: 0 auto; }
.lb-studio { margin: 0; }
.lb-studio__frame { position: relative; width: fit-content; max-width: 100%; margin: 0 auto; padding: 10px; background: #2b2a2c;
  box-shadow: inset 0 0 0 1px #4a4847, 0 22px 40px -20px rgba(20, 22, 30, .6); }
.lb-studio__frame img { display: block; width: auto; max-width: 100%; height: auto; max-height: calc(100svh - 270px); min-height: 360px; object-fit: contain; }
.lb-hs { position: absolute; left: var(--x); top: var(--y); transform: translate(-50%, -50%); display: inline-flex; align-items: center; gap: 6px; min-height: 40px; padding: 4px 12px 4px 4px;
  border: 0; border-radius: 22px; background: rgba(248, 246, 240, .9); color: var(--ink); font: 600 14px/1 var(--body); cursor: pointer; box-shadow: 0 4px 14px rgba(0, 0, 0, .35); transition: background .2s, color .2s; }
.lb-hs i { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; background: var(--acc); color: var(--acc-ink); font: 600 16px/1 var(--lat); font-style: normal; }
.lb-hs::before { content: ""; position: absolute; left: 4px; top: 50%; width: 30px; height: 30px; margin-top: -15px; border-radius: 50%; border: 2px solid var(--gold-2); animation: lb-ping 2.6s ease-out infinite; pointer-events: none; }
@keyframes lb-ping { 0% { transform: scale(1); opacity: .9; } 80%, 100% { transform: scale(1.8); opacity: 0; } }
.lb-hs[aria-pressed="true"] { background: var(--acc); color: var(--acc-ink); }
.lb-hs[aria-pressed="true"] i { background: var(--gold-2); color: var(--ink); }
.lb-hs[aria-pressed="true"]::before { animation: none; opacity: 0; }
.lb-studio__out { max-width: 560px; margin: 12px auto 0; min-height: 4.6em; font-size: 14.5px; line-height: 1.75; color: var(--ink-2); }
.lb-studio__out p { margin: 0; }
.lb-studio__out b { color: var(--acc); }
.lb-studio figcaption { max-width: 560px; margin: 6px auto 0; font-size: 12.5px; line-height: 1.6; color: var(--ink-3); }
.lb-k { margin: 0; font-size: 14px; letter-spacing: .22em; color: var(--acc); font-weight: 600; }
.lb-title h1 { margin: 0; font-family: var(--head); font-weight: 400; font-size: clamp(64px, 7vw, 100px); line-height: 1.02; letter-spacing: .12em; color: var(--ink); }
.lb-en { margin: 2px 0 10px; display: flex; gap: 14px; align-items: baseline; font-family: var(--lat); font-size: 24px; font-style: italic; color: var(--ink-2); }
.lb-en span + span { font-style: normal; font-size: 19px; letter-spacing: .06em; }
.lb-who { margin: 0 0 4px; font-size: 18.5px; font-weight: 700; line-height: 1.6; }
.lb-now { margin: 0 0 10px; font-size: 13px; line-height: 1.7; color: var(--ink-2); }
.lb-rel { position: relative; margin: 0 0 12px; padding: 8px 14px 9px 16px; background: var(--paper); border-left: 4px solid var(--acc); box-shadow: 0 1px 0 var(--rule), 0 10px 24px -18px rgba(27, 34, 51, .5); }
.lb-rel p { margin: 0; font-size: 13.5px; line-height: 1.7; }
.lb-rel .mk { margin-bottom: 2px; }
.lb-glasses ol { list-style: none; margin: 0 0 10px; padding: 0; }
.lb-glasses a { display: grid; grid-template-columns: 1.6em 1fr auto; gap: 8px; align-items: baseline; padding: 2px 0; border-bottom: 1px dotted var(--rule); text-decoration: none; font-size: 14px; line-height: 1.5; }
.lb-glasses a i { font-style: normal; font-family: var(--head); color: var(--acc); }
.lb-glasses a .l { font-size: 12.5px; color: var(--ink-3); white-space: nowrap; }
.lb-glasses a .l::before { content: "◌ "; color: var(--gold); }
.lb-glasses a:hover .t { text-decoration: underline; }
.lb-shelf ul { list-style: none; margin: 0 0 10px; padding: 0; display: flex; flex-wrap: wrap; gap: 0 12px; font-size: 13px; line-height: 1.7; }
.lb-shelf small { margin-left: 2px; font-family: var(--lat); font-size: 14px; color: var(--ink-3); }
.c-liu-bing .c3-btn { border-radius: 0; min-height: 40px; }
.c-liu-bing .c3-btn--go { background: var(--acc); border-color: var(--acc); color: var(--acc-ink); }
.c-liu-bing .c3-btn--deep { background: transparent; color: var(--ink); border-color: var(--ink); }
.lb-go { margin: 0; }

/* 黑白方砖地面 */
.lb-floor { position: relative; height: 96px; max-width: 1200px; margin: 28px auto 0; overflow: hidden; }
.lb-floor svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.lb-band { max-width: 1200px; margin: 0 auto; padding-top: 22px; display: grid; grid-template-columns: 1fr 1fr 1.1fr; gap: 30px; }
.lb-mk2 { margin-top: 16px !important; }
.c-liu-bing .c3-feats { margin: 0; padding: 0; list-style: none; counter-reset: f; }
.c-liu-bing .c3-feats li { counter-increment: f; position: relative; padding: 4px 0 4px 26px; font-size: 14px; line-height: 1.65; border-bottom: 1px dotted var(--rule); }
.c-liu-bing .c3-feats li::before { content: counter(f); position: absolute; left: 0; top: 2px; font-family: var(--lat); font-size: 18px; font-style: italic; color: var(--acc); }
.lb-bio { margin: 0; font-size: 14px; line-height: 1.85; color: var(--ink-2); }
.c-liu-bing .c3-books li, .c-liu-bing .c3-links li { font-size: 14px; border-bottom-color: var(--rule); }

/* ---------- 每一问：页边驻守的镜片名 ---------- */
.c-liu-bing .c3q, .c-liu-bing .c3end { display: block; padding-top: calc(var(--bar) + 26px); padding-bottom: 72px; }
.c-liu-bing .c3q { border-top: 1px solid var(--rule); }
.lb-q, .lb-end { max-width: 1200px; margin: 0 auto; }
.lb-grid { display: grid; grid-template-columns: 150px minmax(0, 1.2fr) minmax(0, .8fr); grid-template-rows: auto 1fr; grid-template-areas: "meta head head" "meta art body";
  column-gap: clamp(22px, 3vw, 44px); row-gap: 8px; align-items: start; }
.lb-meta { grid-area: meta; position: sticky; top: calc(var(--bar) + 24px); padding-top: 6px; border-top: 2px solid var(--ink); }
.lb-meta__n { margin: 8px 0 2px; display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--ink-2); letter-spacing: .06em; }
.lb-spec { width: 40px; height: 15px; flex: none; }
.lb-spec circle { fill: rgba(255, 255, 255, .55); stroke: var(--acc); stroke-width: 2.6; }
.lb-spec path { fill: none; stroke: var(--acc); stroke-width: 2.6; stroke-linecap: round; }
.lb-meta__l { margin: 2px 0 0; font-family: var(--head); font-size: 23px; line-height: 1.3; color: var(--acc); letter-spacing: -.02em; }
.lb-meta__e { margin: 4px 0 0; font-family: var(--latsc); font-size: 15px; letter-spacing: .05em; color: var(--ink-3); }
.lb-head { grid-area: head; }
.lb-art { grid-area: art; min-width: 0; }
.lb-body { grid-area: body; min-width: 0; }
.c-liu-bing .c3q__when b { font-family: var(--lat); font-weight: 600; font-size: 34px; color: var(--acc); letter-spacing: .02em; }
.c-liu-bing .c3q__when span { color: var(--ink-2); }
.c-liu-bing .c3q__q { margin: 2px 0 14px; font-family: var(--head); font-weight: 400; font-size: clamp(32px, 3.6vw, 50px); line-height: 1.25; letter-spacing: -.03em; text-wrap: pretty; }
.c-liu-bing .c3q__lede { font-size: 16px; line-height: 1.95; text-align: justify; }
.c-liu-bing .c3-quote { border-left: 0; padding: 4px 0 4px 22px; position: relative; }
.c-liu-bing .c3-quote::before { content: "“"; position: absolute; left: -6px; top: -14px; font-family: var(--lat); font-size: 64px; line-height: 1; color: var(--gold); }
.c-liu-bing .c3-quote blockquote p { font-size: 17.5px; font-weight: 600; }
.c-liu-bing .c3-quote blockquote p::before, .c-liu-bing .c3-quote blockquote p::after { content: ""; }
.c-liu-bing .c3-tags li { border-color: var(--acc); color: var(--acc); background: rgba(255, 255, 255, .4); }
.c-liu-bing .talk { border-color: var(--rule); background: var(--paper); }
.c-liu-bing .c3-ask { border-color: rgba(35, 66, 138, .45); border-radius: 22px; padding: 6px 14px; min-height: 40px; }
.c-liu-bing .c3-deeplink { color: var(--acc); }

/* 图 */
.lb-fig { margin: 0; }
.lb-fig img { display: block; width: 100%; height: auto; }
.lb-fig figcaption, .lb-cap { margin-top: 8px; font-size: 12.5px; line-height: 1.6; color: var(--ink-3); }
.lb-fig--wide img, .lb-fig--isis img { box-shadow: 0 1px 0 var(--rule), 0 16px 30px -22px rgba(27, 34, 51, .55); }
.lb-fig--isis img { border: 1px solid var(--rule); }
.lb-fig--corot img { padding: 9px; background: #2b2a2c; box-shadow: inset 0 0 0 1px #4a4847, 0 18px 30px -18px rgba(20, 22, 30, .6); }

/* 机关通用 */
.lb-wid { padding: 14px 16px 16px; background: var(--paper); border: 1px solid var(--rule); border-top: 3px solid var(--acc); box-shadow: 0 16px 30px -24px rgba(27, 34, 51, .55); }
.lb-wk { margin: 0 0 10px; display: flex; align-items: center; gap: 8px; font-size: 13.5px; letter-spacing: .1em; font-weight: 700; color: var(--acc); }
.lb-wk .lb-spec { width: 34px; }
.lb-wid svg { display: block; width: 100%; height: auto; }
.lb-seg { display: inline-flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.lb-seg button, .lb-lab__btns button { min-height: 40px; padding: 6px 14px; border: 1.5px solid var(--acc); border-radius: 22px; background: transparent; color: var(--acc); font: inherit; font-size: 14px; cursor: pointer; }
.lb-seg button[aria-checked="true"], .lb-lab__btns button[aria-pressed="true"] { background: var(--acc); color: var(--acc-ink); }
.lb-seg button:not([aria-checked="true"]):hover, .lb-lab__btns button:not([aria-pressed="true"]):hover { background: rgba(35, 66, 138, .08); }
.lb-btn { display: inline-flex; align-items: center; min-height: 40px; padding: 6px 18px; border: 1.5px solid var(--acc); border-radius: 22px; background: var(--acc); color: var(--acc-ink); font: inherit; font-size: 14px; cursor: pointer; }
.lb-btn[aria-pressed="true"] { background: transparent; color: var(--acc); }
.lb-wid__btns { margin: 12px 0 0; }
.lb-out { margin-top: 10px; font-size: 14.5px; line-height: 1.8; color: var(--ink-2); }
.lb-out p { margin: 0 0 6px; }
.lb-out b { color: var(--ink); }
.is-live .lb-st:not(.on) { display: none; }
.lb-note { margin: 10px 0 0; font-size: 12.5px; line-height: 1.65; color: var(--ink-3); }
.lb-two { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 18px; align-items: start; }
.lb-two--col { grid-template-columns: minmax(0, 1fr); }

/* 第一问：七副眼镜看同一页 */
.lb-lab__in { display: grid; grid-template-columns: minmax(0, 1fr) minmax(200px, .72fr); gap: 18px; align-items: center; }
.lb-lens { --d: 100%; position: relative; width: 100%; max-width: 420px; aspect-ratio: 1; margin: 0 auto; border-radius: 50%; overflow: hidden; background: #f6f2e9;
  box-shadow: 0 0 0 7px #2e2c2b, 0 0 0 9px var(--gold), 0 20px 34px -12px rgba(20, 22, 30, .55), inset 0 0 40px rgba(27, 34, 51, .18); }
.lb-lens::after { content: ""; position: absolute; inset: 0; border-radius: 50%; pointer-events: none; background: radial-gradient(circle at 30% 24%, rgba(255, 255, 255, .45), rgba(255, 255, 255, 0) 38%); }
.lb-lens__pg { position: absolute; width: calc(var(--z) * 100%); left: calc(50% - var(--fx) * var(--z) * 100%); top: calc(50% - var(--fy) * var(--z) * 158.8%);
  transition: width .9s cubic-bezier(.3, .7, .2, 1), left .9s cubic-bezier(.3, .7, .2, 1), top .9s cubic-bezier(.3, .7, .2, 1), filter .9s; }
.lb-lens__pg img { display: block; width: 100%; height: auto; }
.lb-ov { position: absolute; inset: 0; width: 100%; height: 100%; }
.lb-ov .ov { opacity: 0; transition: opacity .6s .3s; }
.lb-ov rect, .lb-ov circle, .lb-ov path { fill: none; stroke: var(--acc); stroke-width: 9; }
.lb-ov text { fill: var(--acc); font: 700 64px/1 var(--body); text-anchor: middle; }
.lb-ov .ov--whig path { stroke: #b0701a; stroke-width: 12; }
.lb-ov .ov--whig text { fill: #b0701a; }
.lb-ov .ov--gender .wash { fill: rgba(246, 242, 233, .55); stroke: none; }
.lb-ov .ov--gender .ppl circle, .lb-ov .ov--gender .ppl path { fill: rgba(255, 255, 255, .6); stroke: #8a3b62; stroke-width: 10; stroke-dasharray: 26 18; }
.lb-ov .ov--gender text { fill: #8a3b62; font-size: 110px; font-weight: 700; }
.lb-ov .ov--local path { fill: rgba(35, 66, 138, .85); stroke: #f6f2e9; stroke-width: 8; }
.lb-ov .ov--local circle { fill: #f6f2e9; stroke: none; }
.lb-ov .ov--local text { font-size: 80px; }
.lb-ov .ov--anti text { fill: #6b5a3a; font-family: var(--lat); font-size: 90px; font-style: italic; }
.lb-ov .ov--anti rect { stroke: #6b5a3a; }
.lb-lab[data-lens="in"] .ov--in, .lb-lab[data-lens="out"] .ov--out, .lb-lab[data-lens="whig"] .ov--whig, .lb-lab[data-lens="anti"] .ov--anti,
.lb-lab[data-lens="gender"] .ov--gender, .lb-lab[data-lens="local"] .ov--local, .lb-lab[data-lens="kao"] .ov--kao { opacity: 1; }
.lb-lab[data-lens="whig"] .lb-lens__pg { filter: sepia(.25) saturate(1.4); }
.lb-lab[data-lens="anti"] .lb-lens__pg { filter: sepia(.55) contrast(.95); }
.lb-facts { padding: 10px 12px; border: 1px dashed var(--ink-3); background: rgba(255, 255, 255, .5); }
.lb-facts .mk { margin-bottom: 4px; font-size: 12px; }
.lb-facts ul { margin: 0; padding: 0 0 0 1.1em; font-size: 13.5px; line-height: 1.7; }
.lb-lab__btns { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.lb-lab__btns button { display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px; }
.lb-lab__btns button i { width: 11px; height: 11px; border-radius: 50%; border: 1.5px solid currentColor; }
.lb-lab__btns button[aria-pressed="true"] i { background: var(--gold-2); border-color: var(--gold-2); }
.lb-lab__out { min-height: 6.6em; }
.lb-lab__out .see { margin: 0 0 4px; color: var(--ink-3); font-size: 13.5px; }
.lb-lab__out .see b { color: var(--acc); font-size: 15px; }
.lb-lab__out .tell { margin: 0; color: var(--ink); font-size: 15px; }
.lb-lab:not(.is-live) .lb-st { margin-bottom: 12px; }

/* 第二问：照一照镜子 */
.lb-mirror__glass { perspective: 900px; }
.lb-mirror__in { position: relative; display: grid; min-height: 190px; transform-style: preserve-3d; transition: transform 1s cubic-bezier(.4, .1, .2, 1); }
.lb-mirror__f { grid-area: 1 / 1; display: flex; flex-direction: column; justify-content: center; padding: 18px 20px; border-radius: 50% / 22%; backface-visibility: hidden; -webkit-backface-visibility: hidden;
  background: radial-gradient(ellipse at 35% 25%, #ffffff, #dfe4ee 70%); border: 7px solid #2e2c2b; box-shadow: 0 0 0 2px var(--gold), inset 0 0 22px rgba(27, 34, 51, .18); text-align: center; }
.lb-mirror__f--b { transform: rotateY(180deg); background: radial-gradient(ellipse at 65% 25%, #ffffff, #e6e1d4 70%); }
.lb-mirror__f .who { margin: 0 0 6px; font-family: var(--head); font-size: 25px; color: var(--acc); }
.lb-mirror__f .who em { display: block; font-style: normal; font-family: var(--body); font-size: 14px; color: var(--ink-2); letter-spacing: .2em; }
.lb-mirror__f .say { margin: 0 auto; max-width: 22em; font-size: 14px; line-height: 1.7; }
.lb-mirror.is-flip .lb-mirror__in { transform: rotateY(180deg); }
.lb-mirror:not(.is-live) .lb-mirror__f--b { transform: none; }
.lb-mirror:not(.is-live) .lb-mirror__in { gap: 10px; }
.lb-mirror:not(.is-live) .lb-mirror__f { grid-area: auto; }

/* 第三问：萨顿的桥 */
.lb-bridge .bank { fill: #d9d3c4; stroke: var(--ink); stroke-width: 1.4; }
.lb-bridge .water { fill: none; stroke: var(--acc); stroke-width: 1.6; opacity: .6; }
.lb-bridge .shore { font: 700 17px/1 var(--body); fill: var(--ink); text-anchor: middle; }
.lb-bridge .pier path { fill: var(--ink-2); }
.lb-bridge .deck { transform-origin: 280px 124px; transition: transform 1s cubic-bezier(.4, .1, .2, 1.2); }
.lb-bridge .deck rect { fill: #8a6a3a; stroke: var(--ink); stroke-width: 1.4; }
.lb-bridge .rail { fill: none; stroke: var(--ink); stroke-width: 1.4; }
.lb-bridge .wt { opacity: 0; transition: opacity .5s; }
.lb-bridge .wt rect { fill: var(--acc); }
.lb-bridge .wt text { fill: var(--acc-ink); font: 700 12px/1 var(--body); text-anchor: middle; }
.lb-bridge[data-view="1"] .deck { transform: rotate(-5deg); }
.lb-bridge[data-view="1"] .wt { opacity: 1; }

/* 第四问：聚光灯 */
@property --lb-sx { syntax: "<percentage>"; inherits: true; initial-value: 42%; }
@property --lb-sy { syntax: "<percentage>"; inherits: true; initial-value: 36%; }
.lb-spot { --lb-sx: 42%; --lb-sy: 36%; transition: --lb-sx .9s cubic-bezier(.3, .7, .2, 1), --lb-sy .9s cubic-bezier(.3, .7, .2, 1); }
.lb-spot[data-view="1"] { --lb-sx: 70%; --lb-sy: 52%; }
.lb-spot__img { position: relative; max-width: 460px; margin: 0 auto; }
.lb-spot__img img { display: block; width: 100%; height: auto; }
.lb-spot__light { position: absolute; inset: 0; pointer-events: none; background: radial-gradient(ellipse 30% 26% at var(--lb-sx) var(--lb-sy), rgba(20, 22, 30, 0) 0 55%, rgba(20, 22, 30, .62) 100%); }
.lb-spot:not(.is-live) .lb-spot__light { display: none; }
.lb-spot[data-view="1"] .lb-spot__img::after { content: ""; position: absolute; left: 32%; right: 32%; bottom: 0; height: 4.5%; border: 2px solid var(--gold-2); border-radius: 4px; }

/* 第五问：标签贴在哪里 */
.lb-tag__row { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: 14px; align-items: start; }
.lb-tag__row figure { position: relative; margin: 0; }
.lb-tag__row img { display: block; width: 100%; height: auto; }
.lb-tag__crop { position: relative; aspect-ratio: 1.1; border: 1px solid var(--rule); background-color: #f6f2e9; background-repeat: no-repeat; background-size: 160% auto; background-position: 43.3% 59.1%; }
.lb-tag__row figcaption { margin-top: 6px; font-size: 12.5px; line-height: 1.55; color: var(--ink-3); }
.lb-tag__t { position: absolute; top: 10px; right: -6px; padding: 4px 12px 4px 16px; background: var(--gold-2); color: var(--ink); font-size: 13px; font-weight: 700; letter-spacing: .06em;
  clip-path: polygon(10px 0, 100% 0, 100% 100%, 10px 100%, 0 50%); box-shadow: 0 6px 12px -6px rgba(0, 0, 0, .5); transition: opacity .5s, transform .5s cubic-bezier(.3, 1.4, .5, 1); }
.lb-tag.is-live .lb-tag__b .lb-tag__t { opacity: 0; transform: translateY(-14px) rotate(-8deg); }
.lb-tag.is-live[data-view="1"] .lb-tag__b .lb-tag__t { opacity: 1; transform: none; }

/* 第六问：边界拉宽拉窄 */
.lb-wide .edge { fill: rgba(35, 66, 138, .06); stroke: var(--acc); stroke-width: 2.5; stroke-dasharray: 8 6; transition: rx .9s cubic-bezier(.3, .7, .2, 1), ry .9s cubic-bezier(.3, .7, .2, 1), cx .9s cubic-bezier(.3, .7, .2, 1); }
.lb-wide .line { fill: none; stroke: var(--ink-3); stroke-width: 2; stroke-dasharray: 3 5; }
.lb-wide .it circle { fill: #fff; stroke: var(--ink-3); stroke-width: 1.4; transition: fill .6s, stroke .6s; }
.lb-wide svg { max-width: 520px; margin: 0 auto; }
.lb-wide .it text { font: 600 15px/1 var(--body); fill: var(--ink-3); text-anchor: middle; transition: fill .6s; }
.lb-wide .it--core circle { fill: var(--acc); stroke: var(--acc); }
.lb-wide .it--core text { fill: var(--acc-ink); }
.lb-wide[data-view="1"] .it--gr circle, .lb-wide[data-view="2"] .it circle { fill: #dfe6f4; stroke: var(--acc); }
.lb-wide[data-view="1"] .it--gr text, .lb-wide[data-view="2"] .it text { fill: var(--acc); }
.lb-wide[data-view="2"] .it--core circle { fill: var(--acc); }
.lb-wide[data-view="2"] .it--core text { fill: var(--acc-ink); }
.lb-range { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 2px 12px; align-items: center; margin-top: 8px; }
.lb-range label { font-size: 13.5px; font-weight: 700; color: var(--ink-2); }
.lb-range input { width: 100%; min-height: 40px; accent-color: var(--acc); cursor: pointer; }
.lb-range__t { grid-column: 2; display: flex; justify-content: space-between; margin: -8px 0 0; font-size: 12.5px; color: var(--ink-3); }

/* 南腔北调：■ 刘兵，□ 江晓原（与江晓原名片呼应） */
.lb-nq { margin-top: 18px; padding: 12px 16px; background: #fbfaf6; border: 1px solid var(--ink); border-top: 4px double var(--ink); box-shadow: 0 16px 30px -24px rgba(27, 34, 51, .55); }
.lb-nq__h { margin: 0 0 8px; display: flex; flex-wrap: wrap; gap: 4px 12px; align-items: baseline; padding-bottom: 6px; border-bottom: 1px solid var(--rule); }
.lb-nq__h b { font-family: var(--body); font-size: 19px; font-weight: 900; letter-spacing: .3em; }
.lb-nq__h span { font-size: 12.5px; color: var(--ink-3); }
.lb-nq__l { margin: 0 0 6px; font-size: 14.5px; line-height: 1.8; }
.lb-nq__l i { font-style: normal; margin-right: 4px; font-size: 15px; }
.lb-nq__l b { margin-right: 2px; }
.lb-nq__l b::after { content: "："; }
.lb-nq__l--me { background: rgba(35, 66, 138, .07); box-shadow: -6px 0 0 rgba(35, 66, 138, .07); }
.lb-nq__k { margin: 8px 0 0; display: flex; flex-wrap: wrap; gap: 4px 12px; font-size: 12.5px; color: var(--ink-3); }
.lb-nq__k a { color: var(--acc); font-weight: 700; }

/* 第七问：脚手架 */
.lb-scaf .wall { fill: #efe9dc; stroke: var(--ink); stroke-width: 1.6; }
.lb-scaf .roof { fill: var(--acc); stroke: var(--ink); stroke-width: 1.6; }
.lb-scaf .win, .lb-scaf .door { fill: #c9d3e6; stroke: var(--ink); stroke-width: 1.4; }
.lb-scaf .door { fill: #8a6a3a; }
.lb-scaf .lab { font: 700 18px/1 var(--head); fill: var(--acc); text-anchor: middle; letter-spacing: .2em; opacity: 0; transition: opacity .6s .6s; }
.lb-scaf .lab2 { font: 700 16px/1 var(--head); fill: #8a5a1a; text-anchor: middle; }
.lb-scaf .scaf path { fill: none; stroke: #b07a2a; stroke-width: 4; stroke-linecap: round; }
.lb-scaf .scaf { transition: opacity .8s, transform .8s; }
.lb-scaf .ground { stroke: var(--ink); stroke-width: 1.6; }
.lb-scaf.is-off .scaf { opacity: 0; transform: translateY(16px); }
.lb-scaf.is-off .lab { opacity: 1; }
.lb-scaf:not(.is-live) .lab { opacity: 1; }

/* ---------- 结尾 ---------- */
.lb-floor--end { margin: 34px auto -72px; height: 110px; }
.c-liu-bing .c3end h2 { margin: 0 0 8px; font-family: var(--head); font-weight: 400; font-size: clamp(34px, 4vw, 52px); letter-spacing: .06em; }
.lb-end__lead { margin: 0 0 20px; max-width: 46em; font-size: 16px; line-height: 1.9; color: var(--ink-2); }
.c-liu-bing .c3-lin li { border-radius: 0; border-color: var(--rule); border-top: 2px solid var(--acc); background: var(--paper); }
.c-liu-bing .c3end h3 { font-family: var(--head); font-weight: 400; font-size: 22px; }

/* 触屏：链接与按钮的点按区域不小于 40px */
@media (pointer: coarse) {
  .c-liu-bing .c3toc a { min-height: 40px; min-width: 40px; }
  .lb-glasses a { min-height: 40px; align-items: center; }
  .c-liu-bing .c3-books a, .c-liu-bing .c3-links a, .c-liu-bing .c3-works a { display: inline-block; padding: 8px 0; }
  .c-liu-bing .c3-deeplink { display: inline-flex; align-items: center; min-height: 40px; }
  .lb-nq__k a { display: inline-flex; align-items: center; min-height: 40px; }
}
@media (prefers-reduced-motion: reduce) {
  .lb-hs::before { animation: none; }
}
@media (max-width: 1100px) {
  .lb-grid { grid-template-columns: 150px minmax(0, 1fr); grid-template-areas: "meta head" "meta art" "meta body"; grid-template-rows: auto auto 1fr; }
  .lb-two { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
}
@media (max-width: 960px) {
  .lb-hero { grid-template-columns: minmax(0, 1fr); }
  .lb-studio { order: 2; }
  .lb-studio__frame img { max-height: none; min-height: 0; }
  .lb-band { grid-template-columns: 1fr 1fr; }
  .lb-band__c:last-child { grid-column: 1 / -1; }
}
@media (max-width: 760px) {
  .lb-grid { grid-template-columns: minmax(0, 1fr); grid-template-areas: "meta" "head" "art" "body"; grid-template-rows: auto; row-gap: 10px; }
  .lb-meta { position: static; display: flex; flex-wrap: wrap; align-items: baseline; gap: 2px 12px; padding-top: 0; border-top: 0; border-bottom: 1px solid var(--rule); padding-bottom: 6px; }
  .lb-meta__n { margin: 0; }
  .lb-meta__l { font-size: 20px; margin: 0; }
  .lb-meta__e { margin: 0; }
  .lb-two { grid-template-columns: minmax(0, 1fr); }
  .lb-fig--corot { max-width: 250px; margin: 0 auto; }
  .lb-spot__img { max-width: 300px; }
  .lb-lab__in { grid-template-columns: minmax(0, 1fr); }
  .lb-lens { max-width: 340px; }
  .lb-tag__row { grid-template-columns: minmax(0, 1fr); }
  .lb-tag__crop { aspect-ratio: 1.5; background-position: 43.3% 57.9%; }
  .lb-band { grid-template-columns: minmax(0, 1fr); }
  .lb-floor { height: 64px; }
}
@media (max-width: 640px) {
  .c-liu-bing .c3hero { padding-top: calc(var(--bar) + 16px); }
  .lb-title h1 { font-size: 78px; }
  .lb-glasses a { grid-template-columns: 1.4em 1fr; }
  .lb-glasses a .l { display: none; }
  .lb-hs { padding: 3px 4px; gap: 0; }
  .lb-hs span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
}
.lb-tiles .l { fill: #f1eee7; }
.lb-tiles .d { fill: var(--tile); }