:root{--cq:#0f1a2e;--cq-2:#1a2840;--nj:#d3b46a;--zhu:#b8361f;--paper:#f5f6f1;--paper-2:#e9ebe4;--ink:#17202e;--ink-2:#5d6570;--gold:#856626;--hair:#17202e21;--accent:var(--zhu);--on-accent:#f5f6f1;--serif:"KingHwa OldSong", "Yicang Symbols", "Songti SC", "STSong", "SimSun", serif;--sans:"Yicang Symbols", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif;--z:1;--rail:340px;color-scheme:light}:root[data-paper=zhu]{--paper:#efe9d8;--paper-2:#e3dcc8;--ink:#231f17;--ink-2:#6a6251;--gold:#7a5e22;--hair:#231f1724}:root[data-paper=ciqing]{--paper:var(--cq);--paper-2:var(--cq-2);--ink:#e2d9be;--ink-2:#a3a69f;--gold:var(--nj);--hair:#e2d9be29;--accent:#e8917a;--on-accent:var(--cq);color-scheme:dark}*{box-sizing:border-box}html{background:var(--paper);color:var(--ink);font-family:var(--sans);-webkit-text-size-adjust:100%}body{font-synthesis-weight:none;min-height:100dvh;margin:0;line-height:1.8}a{color:inherit}button{font:inherit;color:inherit;cursor:pointer;background:0 0;border:0;padding:0}h1,h2,h3{font-family:var(--serif);text-wrap:balance;margin:0;line-height:1.35}p{margin:0}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.skip{background:var(--paper);z-index:50;padding:8px 12px;position:absolute;top:-48px;left:8px}.skip:focus{top:8px}.shelf-page{background:var(--cq);color:#e2d9be;--hair:#d3b46a4d;--accent:#e8917a;color-scheme:dark;min-height:100dvh;overflow-x:hidden}.shelf{max-width:1160px;padding:max(32px, env(safe-area-inset-top)) max(20px, env(safe-area-inset-right)) 64px max(20px, env(safe-area-inset-left));flex-direction:column;gap:28px;margin:0 auto;display:flex}.site-links{flex-wrap:wrap;gap:4px 18px;font-size:14px;display:flex}.site-links a{color:#a3a69f;align-items:center;min-height:32px;text-decoration:none;display:inline-flex}.site-links a:hover{color:var(--nj)}.shelf-head{flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:8px 24px;display:flex}.shelf-head h1{letter-spacing:.32em;color:var(--nj);font-size:40px;font-weight:700}.shelf-head p{color:#a3a69f;font-size:14px}.resume{background:var(--cq-2);flex-wrap:wrap;align-items:baseline;gap:4px 12px;padding:12px 14px;font-size:14px;text-decoration:none;display:flex}.resume[hidden]{display:none}.resume b{font-family:var(--serif);color:var(--nj);font-weight:600}.resume span:last-child{color:#e8917a;margin-left:auto}.cases{grid-template-columns:repeat(4,minmax(0,1fr));gap:36px 24px;display:grid}.case{flex-direction:column;min-width:0;display:flex;position:relative}.case-wide{grid-column:span 2}.case-meta{justify-content:space-between;align-items:baseline;gap:8px;display:flex}.case-meta h2{color:#f5f6f1;letter-spacing:.05em;font-size:19px;font-weight:600}.case-count{color:#8c9086;font-size:12px;font-family:var(--sans);letter-spacing:.02em}.case-note{color:#a3a69f;min-height:2.4em;margin-top:3px;margin-bottom:12px;font-size:13px;line-height:1.6}.shelf-stage{perspective:1000px;min-width:0;max-width:100%;margin-top:auto;position:relative}.shelf-mask{cursor:pointer;z-index:5;opacity:0;pointer-events:none;background:0 0;border:0;width:44px;margin:0;padding:0;transition:opacity .25s;position:absolute;top:0;bottom:16px}.shelf-mask.prev{background:linear-gradient(90deg, var(--cq) 15%, #0f1a2ecc 60%, transparent 100%);left:0}.shelf-mask.next{background:linear-gradient(-90deg, var(--cq) 15%, #0f1a2ecc 60%, transparent 100%);right:0}.shelf-stage.has-left-overflow .shelf-mask.prev,.shelf-stage.has-right-overflow .shelf-mask.next{opacity:1;pointer-events:auto}.shelf-nav{backdrop-filter:blur(4px);width:26px;height:38px;color:var(--nj);z-index:8;opacity:0;cursor:pointer;background:#1a2840d9;border:1px solid #d3b46a59;border-radius:3px;justify-content:center;align-items:center;font-size:18px;line-height:1;transition:opacity .2s,background-color .2s,border-color .2s;display:flex;position:absolute;top:45%;transform:translateY(-50%)}.shelf-stage:hover .shelf-nav:not(:disabled){opacity:.85}.shelf-nav:hover:not(:disabled){border-color:var(--nj);background:#203250f2;box-shadow:0 0 8px #d3b46a4d;opacity:1!important}.shelf-nav:disabled{pointer-events:none;opacity:0!important}.shelf-nav.prev{left:2px}.shelf-nav.next{right:2px}.spines{scroll-behavior:smooth;scroll-snap-type:x proximity;scrollbar-width:none;-ms-overflow-style:none;align-items:flex-end;gap:7px;max-width:100%;height:200px;padding:18px 4px 0;display:flex;overflow:auto hidden}.spines::-webkit-scrollbar{display:none}.spines:focus-visible{border-radius:2px;outline:1px solid #d3b46a66}.shelf-board{width:100%;margin-top:-1px;position:relative}.shelf-surface{background:linear-gradient(#d8ba72 0%,#aa873b 55%,#6a501a 100%);border-radius:1px 1px 0 0;height:5px;box-shadow:inset 0 1px 1px #ffffff59}.shelf-edge{background:linear-gradient(#573f15 0%,#3e2d0f 70%,#291d09 100%);border-top:1px solid #7c5d22;border-radius:0 0 2px 2px;height:7px;box-shadow:0 8px 16px -2px #0000008c,0 3px 6px -1px #00000059}.shelf-track{cursor:pointer;opacity:0;pointer-events:none;touch-action:none;background:#d3b46a1f;border-radius:2px;width:100%;height:3px;margin-top:6px;transition:opacity .25s,background-color .15s;position:relative;overflow:hidden}.shelf-stage.can-scroll .shelf-track{opacity:1;pointer-events:auto}.shelf-track:hover{background:#d3b46a3d}.shelf-thumb{pointer-events:none;will-change:transform, width;background:linear-gradient(90deg,#aa873b 0%,#f7dc99 50%,#aa873b 100%);border-radius:2px;width:24px;height:100%;position:absolute;top:0;left:0;box-shadow:0 0 5px #d3b46a80}.spine{writing-mode:vertical-rl;font-family:var(--serif);letter-spacing:.08em;white-space:nowrap;scroll-snap-align:start;transform-origin:bottom;border-radius:2px 2px 0 0;flex:none;justify-content:flex-start;align-items:center;padding:12px 0 8px;font-size:14px;text-decoration:none;transition:transform .22s cubic-bezier(.2,.8,.25,1),box-shadow .22s cubic-bezier(.2,.8,.25,1),filter .22s;display:flex;position:relative;overflow:hidden}.spine:after{content:"";background:#ffffff40;border-radius:2px 2px 0 0;height:3px;position:absolute;top:0;left:0;right:0}.spine-text{line-height:1.2;display:inline-block}.spine.ready{color:#111b2c;background:linear-gradient(90deg,#c4a457 0%,#fae29c 16%,#d8b76c 45%,#c19c45 82%,#9b7928 100%);border:1px solid #8e6e22;border-bottom:none;font-weight:600;box-shadow:inset -1px 0 2px #00000040,inset 1px 0 1px #ffffff4d,0 2px 4px #00000059}.spine.site{color:var(--nj);border:1px solid var(--nj);background:linear-gradient(90deg,#16243b 0%,#243859 25%,#1d2f4d 70%,#121c2e 100%);border-bottom:none;font-weight:600;box-shadow:inset 0 0 8px #d3b46a26,0 2px 4px #00000059}.spine.preparing{color:#c9c3ae;background:linear-gradient(90deg,#1b2639 0%,#203148 40%,#182436 100%);border:1px solid #d3b46a73;border-bottom:none;box-shadow:0 2px 4px #0000004d}.spine.planned{color:#a3a69f;background:linear-gradient(90deg,#152033 0%,#1a273e 50%,#131d2e 100%);border:1px dashed #a3a69f80;border-bottom:none}a.spine:hover,a.spine:focus-visible{z-index:6;outline:none;transform:translateY(-13px)translateZ(12px)rotateY(-3.5deg);box-shadow:-5px 12px 22px #0000008c,0 2px 6px #d3b46a40}a.spine.ready:hover{filter:brightness(1.04)}a.spine.site:hover{color:#ffe699;border-color:#ffd87d}.legend{color:#a3a69f;flex-wrap:wrap;gap:6px 20px;font-size:13px;display:flex}.legend i{vertical-align:-2px;width:10px;height:14px;margin-right:6px;display:inline-block}.book{max-width:720px;padding:32px max(20px, env(safe-area-inset-right)) 64px max(20px, env(safe-area-inset-left));flex-direction:column;gap:22px;margin:0 auto;display:flex}.crumb{color:var(--ink-2);font-size:14px;text-decoration:none}.crumb:hover{color:var(--accent)}.book h1{letter-spacing:.1em;font-size:38px}.byline{color:var(--ink-2);font-size:14px}.intro{font-family:var(--serif);font-size:18px;line-height:2}.toc{border-top:1px solid var(--hair);margin:0;padding:0;list-style:none}.toc a{border-bottom:1px solid var(--hair);font-family:var(--serif);justify-content:space-between;gap:16px;padding:14px 0;font-size:18px;font-weight:600;text-decoration:none;display:flex}.toc a:hover{color:var(--accent)}.toc span{font-family:var(--sans);color:var(--ink-2);white-space:nowrap;font-size:13px;font-weight:400}.bar{z-index:20;min-height:48px;padding:env(safe-area-inset-top) max(14px, env(safe-area-inset-right)) 0 max(14px, env(safe-area-inset-left));background:var(--paper);border-bottom:1px solid var(--hair);align-items:center;gap:12px;font-size:14px;transition:transform .2s;display:flex;position:sticky;top:0}.bar.away{transform:translateY(-105%)}.bar .where{white-space:nowrap;text-overflow:ellipsis;min-width:0;color:var(--ink-2);flex:1;overflow:hidden}.bar .where b{font-family:var(--serif);color:var(--ink);font-weight:600}.tool{min-width:40px;min-height:44px;color:var(--ink-2);white-space:nowrap;align-items:center;text-decoration:none;display:inline-flex}.tool:hover{color:var(--accent)}.no-js .tool[data-js]{display:none}.progress{z-index:30;pointer-events:none;height:2px;position:fixed;top:0;left:0;right:0}.progress i{background:var(--accent);width:0;height:100%;display:block}.reader{width:min(100%,860px);padding:32px max(18px, env(safe-area-inset-right)) 120px max(18px, env(safe-area-inset-left));margin:0 auto}.ch-title{text-align:center;margin-bottom:36px}.ch-title h1{font-size:calc(30px * var(--z));letter-spacing:.16em;font-weight:700}.ch-title p{color:var(--ink-2);font-size:13px}.seg{content-visibility:auto;contain-intrinsic-block-size:auto 36rem;margin-bottom:44px;scroll-margin-top:64px}.seg-head{color:var(--ink-2);justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:8px;font-size:13px;display:flex}.seg-head h2{letter-spacing:.08em;color:var(--ink-2);font-size:14px;font-weight:400}.seg-actions{gap:14px;display:flex}.seg-actions button{min-height:32px;color:var(--ink-2);white-space:nowrap;font-size:13px}.seg-actions button:hover{color:var(--accent)}.no-js .seg-actions{display:none}.pair{grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:0 36px;padding:8px 0;scroll-margin-top:64px;display:grid}.pair+.pair{border-top:1px dotted var(--hair)}.yuan{font-family:var(--serif);font-size:calc(19px * var(--z));letter-spacing:.02em;line-height:2}.bai{font-size:calc(15px * var(--z));color:var(--ink-2);line-height:1.95}.yuan,.bai{text-spacing-trim:trim-start;text-autospace:normal;hanging-punctuation:allow-end;line-break:strict}.pair:target{background:color-mix(in srgb, var(--accent) 9%, transparent)}.term{color:inherit;text-decoration:underline dotted var(--accent) 1.5px;text-underline-offset:.3em;cursor:pointer}.term.on{background:color-mix(in srgb, var(--accent) 16%, transparent)}rt{font-family:var(--sans);color:var(--gold);letter-spacing:0;font-size:.5em}[data-apparatus=on] .pair[data-read] .yuan:after{content:"校";font-family:var(--sans);color:var(--gold);vertical-align:.5em;margin-left:2px;font-size:.56em}[data-mode=yuan] .bai,[data-mode=bai] .yuan{display:none}[data-mode=yuan] .reader,[data-mode=bai] .reader{width:min(100%, calc(690px * var(--z)))}[data-mode=yuan] .pair,[data-mode=bai] .pair{border:0;padding:0;display:inline}[data-mode=yuan] .yuan,[data-mode=bai] .bai{cursor:pointer;display:inline}[data-mode=yuan] .yuan{line-height:2.15}[data-mode=bai] .bai{font-size:calc(17px * var(--z));color:var(--ink);line-height:2.05}[data-mode=yuan] .pair.open .yuan,[data-mode=bai] .pair.open .bai{background:color-mix(in srgb, var(--accent) 12%, transparent)}.reveal{font-size:calc(15px * var(--z));color:var(--ink-2);border-left:2px solid var(--accent);margin:10px 0 4px;padding:2px 0 2px 12px;line-height:1.9;display:block}.reveal.src{font-family:var(--serif);color:var(--ink)}[data-vertical=on][data-mode=yuan] .reader{writing-mode:vertical-rl;width:auto;max-width:none;height:calc(100dvh - 52px);margin:0;padding:28px 24px 84px;overflow:auto hidden}[data-vertical=on][data-mode=yuan] .ch-title{text-align:start;margin:0 0 0 36px}[data-vertical=on][data-mode=yuan] .seg{margin:0 0 0 40px}[data-vertical=on][data-mode=yuan] .seg-head,[data-vertical=on] .endcard{display:none}[data-vertical=on][data-mode=yuan] .yuan{letter-spacing:.08em;line-height:2.3}[data-vertical=on][data-mode=yuan] .reveal{border-left:0;border-right:2px solid var(--accent);margin:0 10px 0 0;padding:12px 0 0}.notes-inline{margin-top:12px;font-size:14px}.notes-inline summary{cursor:pointer;color:var(--ink-2);font-size:13px}.js .notes-inline{display:none}.note-group+.note-group{margin-top:12px}.note-group h3{font-family:var(--sans);color:var(--ink-2);font-size:13px;font-weight:500}.js .note-group>h3{display:none}.note{padding:6px 0;scroll-margin-top:8px}.note .hw{font-family:var(--serif);font-size:16px;font-weight:600}.note .py{color:var(--gold);margin-left:6px;font-size:13px}.note .src{color:var(--ink-2);font-size:12.5px;display:block}.note .q{font-family:var(--serif);margin-top:2px;display:block}.note.on .hw{color:var(--accent)}.tag{color:var(--gold);margin-left:6px;font-size:12px}.rail{width:min(var(--rail), 100vw);z-index:25;background:var(--paper);border-left:1px solid var(--hair);visibility:hidden;padding-top:env(safe-area-inset-top);flex-direction:column;transition:transform .2s,visibility .2s;display:flex;position:fixed;top:0;bottom:0;right:0;transform:translate(105%)}.rail.open{visibility:visible;transform:none}.rail-head{font-family:var(--serif);color:var(--ink-2);justify-content:space-between;align-items:center;padding:8px 16px 0;font-size:13px;display:flex}.rail-head .tool{font-family:var(--sans)}.tabs{border-bottom:1px solid var(--hair);gap:18px;padding:2px 16px 0;display:flex}.tabs button{color:var(--ink-2);border-bottom:2px solid #0000;min-height:40px;margin-bottom:-1px;padding:8px 0;font-size:14px}.tabs button[aria-selected=true]{color:var(--accent);border-bottom-color:var(--accent)}.rail-body{padding:12px 16px calc(24px + env(safe-area-inset-bottom));flex:1;font-size:14px;line-height:1.8;overflow-y:auto}.dock{left:50%;bottom:calc(16px + env(safe-area-inset-bottom));z-index:20;background:var(--paper-2);border:1px solid var(--hair);gap:2px;padding:3px;transition:transform .2s,opacity .2s;display:flex;position:fixed;transform:translate(-50%)}.dock.away{opacity:0;transform:translate(-50%,80px)}.dock button{white-space:nowrap;min-height:40px;padding:0 16px;font-size:14px}.dock button[aria-pressed=true]{background:var(--accent);color:var(--on-accent)}.no-js .dock{display:none}.panel{z-index:30;background:var(--paper);border:1px solid var(--hair);flex-direction:column;gap:12px;width:244px;padding:14px;font-size:13px;display:flex;position:fixed;top:54px;right:12px;box-shadow:0 8px 24px #00000024}.panel[hidden]{display:none}.panel label,.panel .label{color:var(--ink-2);margin-bottom:4px;font-size:12px;display:block}.choices{gap:6px;display:flex}.choices button{background:var(--paper-2);flex:1;min-height:36px}.choices button[aria-pressed=true]{outline:1.5px solid var(--accent);outline-offset:-1.5px}.endcard{border-top:1px solid var(--hair);flex-direction:column;gap:12px;padding-top:20px;font-size:14px;display:flex}.endcard h2{font-size:16px;font-weight:600}.endlinks{flex-wrap:wrap;gap:8px;display:flex}.endlinks a{background:var(--paper-2);padding:8px 12px;text-decoration:none}.endlinks a:hover{color:var(--accent)}.endlinks a.primary{background:var(--accent);color:var(--on-accent)}.toast{background:var(--ink);color:var(--paper);z-index:40;padding:6px 12px;font-size:13px;position:fixed;bottom:76px;left:50%;transform:translate(-50%)}.toast[hidden]{display:none}@media (width>=1200px){.reader{margin-left:max(32px, calc((100vw - var(--rail) - 860px) / 2))}[data-mode=yuan] .reader,[data-mode=bai] .reader{margin-left:max(32px, calc((100vw - var(--rail) - 690px * var(--z)) / 2))}}@media (width<=760px){.cases{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 16px}.case-wide{grid-column:1/-1}.spines{height:180px}.pair{display:block}.bai{margin-top:2px}.yuan{font-size:calc(18px * var(--z))}.rail{border-left:0;border-top:1px solid var(--hair);width:100%;height:58dvh;padding-top:0;top:auto;left:0;right:0;transform:translateY(105%);box-shadow:0 -10px 24px #0000001f}.shelf-stage.has-left-overflow .shelf-nav.prev:not(:disabled),.shelf-stage.has-right-overflow .shelf-nav.next:not(:disabled){opacity:.9}.shelf-nav{background:#1a2840eb;width:28px;height:44px;font-size:20px}.shelf-nav:active:not(:disabled){border-color:var(--nj);background:#263c60fa}}@media (width<=500px){.cases{grid-template-columns:1fr}.case-wide{grid-column:auto}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important}}@media print{.bar,.dock,.rail,.panel,.progress,.seg-actions{display:none!important}}
