/* 张东林 · 单位线段：一张作图纸。墨是深蓝黑，唯一的亮色是单位线段的朱红；希腊人的“面”用一点赭黄。 */
.c-zhang-donglin {
  --bg: #f4f2ec; --paper: #fbfaf7; --ink: #18233b; --ink-2: #454e63; --ink-3: #646b7b; --rule: rgba(24, 35, 59, .16);
  --acc: #c23b26; --acc-ink: #fff; --ochre: #d99a1f; --ochre-2: rgba(226, 173, 60, .30);
  --head: "Noto Serif SC", "Songti SC", serif; --body: "Noto Serif SC", "Songti SC", serif; --stix: "STIX Two Text", "Times New Roman", serif;
  --bar-bg: rgba(244, 242, 236, .93); --chip-bg: rgba(251, 250, 247, .9); --chip-ring: #fbfaf7;
  background-color: var(--bg);
}
.c-zhang-donglin .dlg { --dlg-bg: #eeece5; --dlg-paper: #fbfaf7; --dlg-ink: #18233b; --dlg-ink-2: #454e63; --dlg-ink-3: #646b7b;
  --dlg-me: #1d2b48; --dlg-me-ink: #f4f2ec; --dlg-acc: #b8361f; }
.c-zhang-donglin .c3bar { border-bottom: 1px solid var(--ink); }
.c-zhang-donglin .c3bar__prog { height: 3px; bottom: -2px; }
.zd-k, .c-zhang-donglin .mk { font-family: var(--body); letter-spacing: .14em; color: var(--ink-3); }
.c-zhang-donglin .mk { font-size: 12.5px; }

/* 右侧目录：竖直的数轴 */
.c-zhang-donglin .c3toc { right: 16px; }
.zd-nav { position: relative; display: block !important; height: min(52vh, 360px); width: 70px; }
.zd-nav::before { content: ""; position: absolute; right: 7px; top: -10px; bottom: -10px; width: 1px; background: var(--ink); opacity: .55; }
.zd-nav li { position: absolute; right: 0; top: calc(var(--y) * 100%); transform: translateY(-50%); }
.c-zhang-donglin .c3toc .zd-nav a { min-height: 26px; color: var(--ink-3); font-family: var(--stix); font-size: 13px; }
.c-zhang-donglin .c3toc .zd-nav a b { font-style: italic; }
.c-zhang-donglin .c3toc .zd-nav a span { font-family: var(--body); }
.c-zhang-donglin .c3toc .zd-nav a::after { width: 15px; height: 1px; border: 0; border-radius: 0; background: currentColor; }
.c-zhang-donglin .c3toc .zd-nav a[aria-current="true"] { color: var(--acc); }
.c-zhang-donglin .c3toc .zd-nav a[aria-current="true"]::after { width: 26px; height: 4px; background: var(--acc); }

/* 单位线段 */
.zd-unit { display: block; width: min(340px, 78%); height: auto; overflow: visible; }
.zd-unit__base { stroke: var(--ink); stroke-width: 1; }
.zd-unit__ab { stroke: var(--acc); stroke-width: 6; stroke-dasharray: 400; stroke-dashoffset: 0; animation: zd-draw 1.4s cubic-bezier(.3, .7, .2, 1) .3s both; }
.zd-unit__tk { stroke: var(--ink); stroke-width: 1.5; }
.zd-unit text { font-family: var(--stix); font-style: italic; font-size: 16px; fill: var(--ink); }
.zd-unit .zd-unit__l { fill: var(--acc); font-style: normal; font-size: 13px; }
@keyframes zd-draw { from { stroke-dashoffset: 400; } to { stroke-dashoffset: 0; } }

/* 首屏 */
.c-zhang-donglin .c3hero { min-height: 0; padding: calc(var(--bar) + 30px) clamp(16px, 5vw, 72px) 44px; }
.zd-hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, .8fr); gap: clamp(28px, 5vw, 84px); max-width: 1240px; margin: 0 auto; align-items: start; }
.zd-k { margin: 0; font-size: 13px; }
.zd-name { margin: 2px 0 0; font-family: var(--head); font-weight: 300; font-size: clamp(64px, 9vw, 128px); line-height: 1.02; letter-spacing: .1em; }
.zd-hero .zd-unit { margin: 10px 0 2px; }
.zd-en { margin: 8px 0 16px; display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 14px; font-family: var(--stix); font-style: italic; font-size: 22px; }
.zd-yr { font-style: normal; font-size: 16px; color: var(--ink-3); }
.zd-who { margin: 0 0 4px; font-size: 19px; font-weight: 600; line-height: 1.6; }
.zd-now { margin: 0 0 16px; font-size: 14.5px; color: var(--ink-2); }
.zd-rel { position: relative; margin: 0 0 16px; padding: 12px 16px 12px 18px; background: var(--paper); border: 1px solid var(--rule); }
.zd-rel::before { content: ""; position: absolute; left: -1px; top: -1px; bottom: -1px; width: 4px; background: var(--acc); }
.zd-rel p { margin: 0; font-size: 14.5px; line-height: 1.8; }
.zd-rel .mk { margin-bottom: 2px; color: var(--acc); }
.zd-rep { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 0 14px; align-items: baseline; margin: 0 0 14px; }
.zd-rep .mk { margin: 0; }
.zd-rep ul { list-style: none; margin: 0; padding: 0; }
.zd-rep li { font-size: 15.5px; line-height: 1.7; }
.zd-rep li span { font-weight: 600; }
.zd-rep small { margin-left: 8px; font-size: 12.5px; color: var(--ink-3); }
.zd-toc .mk { margin-bottom: 4px; }
.zd-toc ol { list-style: none; margin: 0 0 14px; padding: 0; border-top: 1px solid var(--ink); }
.zd-toc li { border-bottom: 1px solid var(--rule); }
.zd-toc a { display: grid; grid-template-columns: 4.2em 1fr; align-items: baseline; min-height: 40px; padding: 6px 0; text-decoration: none; font-size: 15.5px; }
.zd-toc a b { font-family: var(--stix); font-style: italic; font-weight: 400; font-size: 18px; color: var(--acc); }
.zd-toc a:hover span, .zd-toc a:focus-visible span { text-decoration: underline; text-underline-offset: 4px; }
.c-zhang-donglin .c3-btn { border-radius: 0; min-height: 40px; font-family: var(--body); }
.c-zhang-donglin .c3-btn--go { background: var(--acc); border-color: var(--acc); color: var(--acc-ink); }
.c-zhang-donglin .c3-btn--deep { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.c-zhang-donglin .c3-btn--wm { color: var(--ink-2); border-color: var(--rule); }
.zd-go { margin: 0; }
.zd-hero__fig { margin: 0; }
.zd-hero__fig img { display: block; width: auto; max-width: 100%; height: auto; max-height: calc(100svh - 150px); margin-left: auto; mix-blend-mode: multiply; }
.zd-hero__fig figcaption, .zd-fig figcaption { margin-top: 10px; font-size: 13px; line-height: 1.65; color: var(--ink-2); }
.zd-hero__fig figcaption { max-width: 34em; margin-left: auto; }
.zd-band { max-width: 1240px; margin: 40px auto 0; padding-top: 18px; border-top: 1px solid var(--ink); display: grid; grid-template-columns: 1.25fr 1fr 1.25fr .9fr; gap: 28px; }
.zd-band .mk { color: var(--acc); }
.zd-facts { margin: 0; font-size: 14px; line-height: 1.85; color: var(--ink-2); text-align: justify; }
.c-zhang-donglin .c3-feats { margin: 0; padding: 0; list-style: none; counter-reset: f; }
.c-zhang-donglin .c3-feats li { counter-increment: f; position: relative; padding: 5px 0 5px 28px; font-size: 14px; line-height: 1.65; border-bottom: 1px solid var(--rule); }
.c-zhang-donglin .c3-feats li::before { content: counter(f); position: absolute; left: 0; top: 4px; font-family: var(--stix); font-style: italic; font-size: 16px; color: var(--acc); }
.c-zhang-donglin .c3-books li, .c-zhang-donglin .c3-links li { font-size: 14px; border-bottom-style: solid; }
.c-zhang-donglin .c3-books li > a, .c-zhang-donglin .c3-links li > a { text-decoration-color: var(--rule); text-underline-offset: 3px; }

/* 每一问 */
.c-zhang-donglin .c3q { display: block; min-height: 100svh; padding: calc(var(--bar) + 22px) clamp(16px, 5vw, 72px) 60px; }
.zd-q { max-width: 1240px; margin: 0 auto; display: grid; grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr); column-gap: clamp(28px, 4.6vw, 76px);
  grid-template-areas: "ru ru" "head art" "body art"; grid-template-rows: auto auto 1fr; }
.c-zhang-donglin .c3q:nth-of-type(odd) .zd-q { grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr); grid-template-areas: "ru ru" "art head" "art body"; }
.zd-q__ru { grid-area: ru; margin: 0 0 22px; }
.zd-q__head { grid-area: head; }
.zd-q__art { grid-area: art; align-self: start; position: sticky; top: calc(var(--bar) + 18px); background: var(--bg); }
.zd-q__body { grid-area: body; }

/* 数轴（每一问顶端） */
.zd-ru { position: relative; height: 50px; }
.zd-ru > * { position: absolute; }
.zd-ru__base { left: 0; right: 0; top: 30px; height: 1px; background: var(--ink); }
.zd-ru__tk { top: 25px; width: 1px; height: 6px; background: var(--ink-3); left: calc(var(--x) * 100%); }
.zd-ru__tk--5 { top: 20px; height: 11px; background: var(--ink); }
.zd-ru__lb { top: 4px; transform: translateX(-50%); left: calc(var(--x) * 100%); font-family: var(--stix); font-size: 12px; line-height: 1; color: var(--ink-3); }
.zd-ru__seg { top: 28px; height: 5px; left: 0; width: calc(var(--x) * 100%); background: var(--acc); transform-origin: left center; }
.is-in .zd-ru__seg { animation: zd-grow 1.1s cubic-bezier(.3, .7, .2, 1) both; }
@keyframes zd-grow { from { transform: scaleX(0); } to { transform: none; } }
.zd-ru__q { top: 26px; width: 9px; height: 9px; margin-left: -4.5px; border-radius: 50%; border: 1.5px solid var(--ink); background: var(--bg); left: calc(var(--x) * 100%); }
.zd-ru__y { top: 23px; width: 15px; height: 15px; margin-left: -7.5px; border-radius: 50%; background: var(--acc); box-shadow: 0 0 0 3px var(--bg); left: calc(var(--x) * 100%); }
.zd-ru__t0 { top: 38px; left: 0; font-size: 12px; line-height: 1.2; color: var(--ink-3); letter-spacing: .06em; }
.zd-ru__t0 i { font-style: normal; font-family: var(--stix); }

.c-zhang-donglin .c3q__when { gap: 12px; }
.c-zhang-donglin .c3q__when b { font-family: var(--stix); font-style: italic; font-weight: 400; font-size: 40px; line-height: 1; color: var(--acc); }
.c-zhang-donglin .c3q__when span { font-size: 14px; color: var(--ink-2); }
.c-zhang-donglin .c3q__q { margin: 10px 0 18px; font-weight: 600; font-size: clamp(28px, 3.3vw, 44px); line-height: 1.28; letter-spacing: .01em; }
.c-zhang-donglin .c3q__lede { font-size: 16.5px; line-height: 1.95; text-align: justify; }
.c-zhang-donglin .c3-quote { position: relative; margin: 22px 0; padding: 16px 0 4px; border-left: 0; border-top: 1px solid var(--ink); }
.c-zhang-donglin .c3-quote::before { content: ""; position: absolute; left: 0; top: -3px; width: 72px; height: 5px; background: var(--acc); }
.c-zhang-donglin .c3-quote blockquote p { font-size: 18px; font-weight: 600; }
.c-zhang-donglin .c3-quote blockquote p::before, .c-zhang-donglin .c3-quote blockquote p::after { content: none; }
.c-zhang-donglin .c3-orig { font-family: var(--stix); font-size: 15px; color: var(--ink-2); }
.c-zhang-donglin .c3-quote figcaption { color: var(--ink-3); }
.c-zhang-donglin .c3-tags li { border-radius: 0; border-color: var(--ink); color: var(--ink); background: var(--paper); }
.c-zhang-donglin .c3-works { margin-top: 6px; }
.c-zhang-donglin .c3-works li > a { text-underline-offset: 3px; text-decoration-color: var(--rule); }
.c-zhang-donglin .talk { border-radius: 0; border-color: var(--ink); background: var(--paper); }
.c-zhang-donglin .c3-ask { border-radius: 0; border: 1px solid var(--rule); border-left: 3px solid var(--acc); background: var(--paper); }
.c-zhang-donglin .c3-deeplink { color: var(--acc); text-underline-offset: 4px; }

/* 配图 */
.zd-fig { margin: 0; }
.zd-fig img { display: block; width: 100%; height: auto; mix-blend-mode: multiply; }
.zd-fig--inset { margin-top: 18px; padding-top: 12px; border-top: 1px dashed var(--rule); }
.zd-fig--inset img { max-width: 520px; }
.zd-fig--page img { width: auto; max-width: 100%; max-height: min(40vh, 330px); }
.zd-kk { margin: 0 0 8px; font-size: 13px; letter-spacing: .12em; color: var(--acc); }
.zd-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 40px; padding: 7px 14px; border: 1px solid var(--ink); border-radius: 0; background: var(--paper); color: var(--ink);
  font: 14px/1.3 var(--body); cursor: pointer; transition: background .15s, color .15s; }
.zd-btn:hover { background: #fff; }
.zd-btn[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
.zd-seg { display: inline-flex; flex-wrap: wrap; }
.zd-seg .zd-btn + .zd-btn { margin-left: -1px; }
.zd-ctl { margin: 12px 0 0; }
.zd-out { margin: 10px 0 0; min-height: 3.5em; font-size: 14.5px; line-height: 1.75; color: var(--ink-2); }

/* 哥白尼：一圈圈画出去 */
.zd-cop__stage { position: relative; width: min(100%, 560px, calc(100svh - 360px)); min-width: min(100%, 300px); }
.zd-cop__stage img { mix-blend-mode: multiply; }
.zd-cop__rip { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.zd-cop__r circle { fill: none; stroke: var(--acc); stroke-width: 11; opacity: .34; }
.zd-cop__l circle { fill: var(--acc); }
.zd-cop__l text { font-family: var(--body); font-size: 36px; font-weight: 600; fill: var(--acc); paint-order: stroke; stroke: var(--bg); stroke-width: 8px; stroke-linejoin: round; }
.zd-cop--armed .zd-cop__r circle { stroke-dasharray: 1; stroke-dashoffset: 1; opacity: 0; }
.zd-cop--armed .zd-cop__l g { opacity: 0; }
.zd-cop--armed.is-run .zd-cop__r circle { animation: zd-ring 1.1s cubic-bezier(.3, .6, .3, 1) calc(var(--i) * .42s) forwards; }
.zd-cop--armed.is-run .zd-cop__l g { animation: zd-fade .5s ease calc(var(--i) * .42s + .5s) forwards; }
@keyframes zd-ring { 0% { opacity: .6; stroke-dashoffset: 1; } 100% { opacity: .34; stroke-dashoffset: 0; } }
@keyframes zd-fade { to { opacity: 1; } }

/* 对话：一条有向线段，还是两条 */
.zd-dia { padding: 16px 16px 14px; background: var(--paper); border: 1px solid var(--ink); }
.zd-dia svg { display: block; width: 100%; height: auto; font-family: var(--body); }
.zd-dia__one, .zd-dia__a, .zd-dia__b { fill: none; stroke: var(--ink); stroke-width: 3; transition: opacity .4s; }
.zd-dia__ah { fill: var(--ink); stroke: none; }
.zd-dia__one { stroke-width: 5 !important; }
.zd-dia__table { fill: var(--ochre-2); stroke: var(--ochre); stroke-width: 1.5; stroke-dasharray: 4 5; transition: opacity .5s; }
.zd-dia__p circle { fill: var(--ink); }
.zd-dia__p .zd-dia__pub { fill: var(--paper); stroke: var(--ink); stroke-width: 3; }
.zd-dia__p text { font-size: 19px; font-weight: 600; fill: var(--ink); }
.zd-dia__lab { font-size: 17px; fill: var(--acc); letter-spacing: .1em; transition: opacity .4s; paint-order: stroke; stroke: var(--paper); stroke-width: 6px; }
.zd-dia__dots circle { fill: var(--acc); }
.zd-dia[data-mode="one"] .zd-dia__a, .zd-dia[data-mode="one"] .zd-dia__b, .zd-dia[data-mode="one"] .zd-dia__table, .zd-dia[data-mode="one"] .zd-dia__lab--two,
.zd-dia[data-mode="one"] .zd-dot--two { opacity: 0; }
.zd-dia[data-mode="two"] .zd-dia__one, .zd-dia[data-mode="two"] .zd-dia__lab--one, .zd-dia[data-mode="two"] .zd-dot--one { opacity: 0; }
.zd-dia .zd-seg { margin-top: 8px; }

/* 笛卡尔的乘法 */
.zd-mul { padding: 16px 16px 14px; background: var(--paper); border: 1px solid var(--ink); box-shadow: 8px 8px 0 -1px var(--rule); }
.zd-mul__svg { display: block; width: 100%; height: auto; touch-action: pan-y; user-select: none; -webkit-user-select: none; }
.zd-mul__svg line { stroke: var(--ink); stroke-linecap: round; }
.zd-mul__base { stroke-width: 1.4; }
.zd-mul__ray { stroke-width: 1.4; }
.zd-mul__ac, .zd-mul__de { stroke-width: 1.6; }
.zd-mul__par { fill: none; stroke: var(--ink); stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.zd-mul__bd, .zd-mul__bc { stroke-width: 3.5; }
.zd-mul__be { stroke: var(--acc) !important; stroke-width: 4; opacity: .9; }
.zd-mul__ab { stroke: var(--acc) !important; stroke-width: 7; stroke-linecap: butt !important; }
.zd-mul__side { stroke-dasharray: 5 6; stroke-width: 1.6; }
.zd-mul__arc { fill: none; stroke: var(--ochre); stroke-width: 1.6; stroke-dasharray: 3 5; }
.zd-mul__area { fill: var(--ochre-2); stroke: var(--ochre); stroke-width: 2; }
.zd-mul__areat { font-family: var(--body); font-size: 30px; font-weight: 600; fill: #7a5205; }
.zd-mul text { font-family: var(--stix); font-style: italic; font-size: 21px; fill: var(--ink); }
.zd-mul__num text { font-style: normal; font-size: 15px; fill: var(--ink-2); }
.zd-mul__num text[data-n="ab"] { fill: var(--acc); }
.zd-mul__num text[data-n="be"] { fill: var(--acc); font-weight: 600; font-size: 17px; }
.zd-pt--b circle { fill: var(--ink); }
.zd-pt--e circle { fill: var(--paper); stroke: var(--acc); stroke-width: 3; }
.zd-pt--e text { fill: var(--acc); }
.zd-h { cursor: grab; outline: none; touch-action: none; }
.zd-h:active { cursor: grabbing; }
.zd-h__hit { fill: transparent; r: 24px; }
.zd-h__dot { fill: var(--paper); stroke: var(--ink); stroke-width: 3; transition: r .15s; }
.zd-h--a .zd-h__dot { stroke: var(--acc); fill: var(--acc); }
.zd-h:hover .zd-h__dot, .zd-h.is-drag .zd-h__dot { r: 10; }
.zd-h:focus-visible .zd-h__hit { fill: none; stroke: var(--acc); stroke-width: 2; stroke-dasharray: 4 4; }
.zd-mul[data-mode="gr"] .zd-mul__ac, .zd-mul[data-mode="gr"] .zd-mul__de, .zd-mul[data-mode="gr"] .zd-mul__be, .zd-mul[data-mode="gr"] .zd-mul__ab,
.zd-mul[data-mode="gr"] .zd-pt--e, .zd-mul[data-mode="gr"] .zd-h--a, .zd-mul[data-mode="gr"] .zd-mul__num, .zd-mul[data-mode="gr"] .zd-mul__par,
.zd-mul[data-mode="gr"] .zd-mul__ray { display: none; }
.zd-mul[data-mode="des"] .zd-mul__area, .zd-mul[data-mode="des"] .zd-mul__areat, .zd-mul[data-mode="des"] .zd-mul__side, .zd-mul[data-mode="des"] .zd-mul__arc { display: none; }
.zd-mul__eq { margin: 6px 0 10px; min-height: 2.2em; font-family: var(--stix); font-size: 19px; line-height: 1.5; }
.zd-mul__eq b { font-weight: 600; }
.zd-mul__eq .zd-eq__r { color: var(--acc); }
.zd-mul__eq small { margin-left: 12px; font-family: var(--body); font-size: 13px; color: var(--ink-3); }
.zd-mul[data-mode="des"] .zd-eq--gr, .zd-mul[data-mode="gr"] .zd-eq--des { display: none; }
.zd-mul__ctl { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.zd-btn--q { border-color: var(--rule); }

/* “一”的五种读法 */
.zd-ones { margin-top: 18px; padding-top: 14px; border-top: 1px solid var(--ink); }
.zd-ones ol { list-style: none; margin: 0; padding: 0; }
.zd-ones li { display: grid; grid-template-columns: 150px 6em minmax(0, 1fr); gap: 4px 14px; align-items: center; padding: 8px 0; border-bottom: 1px solid var(--rule); }
.zd-ones svg { width: 150px; height: 45px; overflow: visible; }
.zd-ones b { font-weight: 600; font-size: 15.5px; }
.zd-ones p { margin: 0; font-size: 14px; line-height: 1.65; color: var(--ink-2); }
.zd-ones svg * { fill: none; stroke: var(--ink); stroke-width: 1.5; stroke-linecap: round; }
.zd-ones .u { stroke: var(--acc); stroke-width: 6; stroke-linecap: butt; }
.zd-ones .u2 { stroke: var(--acc); stroke-width: 4; stroke-linecap: butt; }
.zd-ones .k { stroke-width: 1.8; }
.zd-ones .m { stroke: var(--ink-3); }
.zd-ones .l { stroke-width: 1.4; }
.zd-ones .x { stroke: var(--ink-3); stroke-dasharray: 3 3; }
.zd-ones .xx { stroke: var(--ink); stroke-width: 2.2; }
.zd-ones .mo { fill: var(--ink); stroke: none; }
.zd-ones .mo--r { fill: var(--acc); }
.zd-ones .rel { stroke: var(--acc); stroke-dasharray: 2 4; }
.zd-ones .cut { stroke: var(--paper); stroke-width: 3; }
.zd-ones .dash { stroke: var(--acc); stroke-width: 2; stroke-dasharray: 4 5; }
.zd-ones .h { fill: var(--paper); stroke: var(--acc); stroke-width: 3; }
.zd-ones .arr { stroke: var(--acc); stroke-width: 2; }
.zd-ones__n { margin: 8px 0 0; font-size: 12.5px; color: var(--ink-3); }
.zd-ones__n a { color: var(--acc); }

/* 结尾 */
.c-zhang-donglin .c3end { padding-top: calc(var(--bar) + 30px); border-top: 1px solid var(--ink); }
.zd-end { max-width: 1240px; margin: 0 auto; }
.zd-end__coda { display: grid; grid-template-columns: 170px minmax(0, 1fr); gap: 18px; align-items: center; max-width: 820px; margin: 0 0 34px; }
.zd-end__coda .zd-unit { width: 160px; }
.zd-end__coda p { margin: 0; font-size: 16px; line-height: 1.85; color: var(--ink-2); }
.c-zhang-donglin .c3end h2 { font-weight: 600; }
.c-zhang-donglin .c3-lin li { border-radius: 0; background: var(--paper); border-color: var(--rule); border-top: 2px solid var(--ink); }
.c-zhang-donglin .c3-lin .rel { border-radius: 0; }

@media (max-width: 1100px) {
  .zd-band { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 961px) and (max-height: 820px) {
  .c-zhang-donglin .c3hero { padding-top: calc(var(--bar) + 18px); }
  .zd-hero { grid-template-columns: minmax(0, 1.12fr) minmax(0, .78fr); }
  .zd-name { font-size: clamp(60px, 7vw, 112px); }
  .zd-en { margin: 4px 0 10px; }
  .zd-now { margin-bottom: 10px; }
  .zd-rel { padding: 8px 14px 8px 16px; margin-bottom: 10px; }
  .zd-rel p { line-height: 1.7; }
  .zd-toc a { min-height: 40px; padding: 4px 0; }
}
@media (max-width: 960px) {
  .zd-hero { grid-template-columns: minmax(0, 1fr); }
  .zd-hero__fig { max-width: 520px; }
  .zd-hero__fig img, .zd-hero__fig figcaption { margin-left: 0; }
  .zd-hero__fig img { max-height: 70vh; }
  .zd-q, .c-zhang-donglin .c3q:nth-of-type(odd) .zd-q { grid-template-columns: minmax(0, 1fr); grid-template-areas: "ru" "head" "art" "body"; grid-template-rows: none; }
  .zd-q__art { position: static; margin: 4px 0 20px; }
  .zd-cop__stage { max-width: 440px; }
}
@media (max-width: 600px) {
  .zd-band { grid-template-columns: minmax(0, 1fr); gap: 22px; }
  .zd-name { letter-spacing: .06em; }
  .zd-en { font-size: 19px; }
  .zd-toc a { grid-template-columns: 3.6em 1fr; font-size: 15px; }
  .c-zhang-donglin .c3q__when b { font-size: 32px; }
  .zd-mul, .zd-dia { padding: 12px 10px; }
  .zd-mul__eq { font-size: 16.5px; }
  .zd-mul__eq small { display: block; margin: 0; }
  .zd-ones li { grid-template-columns: 112px minmax(0, 1fr); }
  .zd-ones svg { width: 112px; height: 34px; grid-row: span 2; }
  .zd-ones b { font-size: 15px; }
  .zd-end__coda { grid-template-columns: minmax(0, 1fr); gap: 6px; }
  .zd-ru__t0 { font-size: 11px; }
  .zd-dia__p text { font-size: 28px; }
  .zd-dia__lab { font-size: 25px; }
  .zd-mul text { font-size: 30px; }
  .zd-h__hit { r: 42px; }
  .zd-mul__num text { font-size: 23px; }
  .zd-mul__num text[data-n="be"] { font-size: 26px; }
  .zd-mul__areat { font-size: 40px; }
  .zd-cop__l text { font-size: 46px; stroke-width: 10px; }
  .zd-cop__l circle { r: 12; }
}