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inherits: true; initial-value: #c3c8cf;}@property --g-flank{syntax: "<color>"; inherits: true; initial-value: #8c939d;}@property --g-pav{syntax: "<color>"; inherits: true; initial-value: #555c66;}@property --g-shadow{syntax: "<color>"; inherits: true; initial-value: #33383f;}@property --g-onlight{syntax: "<color>"; inherits: true; initial-value: #6b727d;}:root,:root[data-gem=graphite]{--g-hi: #f1f3f5;--g-crown: #c3c8cf;--g-flank: #8c939d;--g-pav: #555c66;--g-shadow: #33383f;--g-onlight: #6b727d}:root[data-gem=ruby]{--g-hi: #ffb3c1;--g-crown: #ff758f;--g-flank: #ff4d6d;--g-pav: #c9184a;--g-shadow: #a4133c;--g-onlight: #d6336c}:root[data-gem=sapphire]{--g-hi: #bfd6ff;--g-crown: #7aa6ff;--g-flank: #3d7bff;--g-pav: #1f49c7;--g-shadow: #16338f;--g-onlight: #2f5fd6}:root[data-gem=citrine]{--g-hi: #fff3b0;--g-crown: #facc15;--g-flank: #e0a800;--g-pav: #b8860b;--g-shadow: #7a5a08;--g-onlight: #9a7209}:root{transition:--g-hi .5s ease,--g-crown .5s ease,--g-flank .5s ease,--g-pav .5s ease,--g-shadow .5s ease,--g-onlight .5s ease;--bg: #f4f5f7;--bg-raised: #ffffff;--bg-card: #ffffff;--bg-sunken: #eceef1;--text: #14161a;--text-dim: #555b64;--text-faint: #868d97;--line: rgba(20, 22, 26, .1);--line-strong: rgba(20, 22, 26, .22);--ink-rule: rgba(20, 22, 26, .65);--accent: var(--g-onlight);--accent-ink: var(--g-pav);--accent-soft: color-mix(in srgb, var(--g-flank) 12%, transparent);--accent-wash: color-mix(in srgb, var(--g-flank) 7%, transparent);--btn-bg: var(--text);--btn-text: #ffffff;--sheet-shadow: 0 1px 2px rgba(16, 18, 24, .05), 0 16px 40px -28px rgba(16, 18, 24, .25);--layer-shadow: 0 1px 2px rgba(16, 18, 24, .08), 0 20px 48px -20px rgba(16, 18, 24, .3);--radius: 2px;--radius-sm: 2px;--radius-layer: 10px;--max: 1160px;--margin-col: 184px;--gutter: clamp(18px, 4vw, 40px);--font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", "PingFang SC", "Hiragino Sans", "Apple SD Gothic Neo", "Noto Sans", Arial, sans-serif;--font-display: "Iowan Old Style", "Palatino Linotype", Palatino, "Baskerville", Georgia, "Songti SC", "Hiragino Mincho ProN", "Yu Mincho", "Apple Myungjo", "Noto Serif CJK SC", "Times New Roman", serif;--font-mark: "Iowan Old Style", "Baskerville", Georgia, serif;--font-mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;color-scheme:light}:root[data-theme=dark]{--bg: #0e0f12;--bg-raised: #15171b;--bg-card: #15171b;--bg-sunken: #090a0c;--text: #e9ebef;--text-dim: #9ba1ab;--text-faint: #666c77;--line: rgba(233, 235, 239, .09);--line-strong: rgba(233, 235, 239, .2);--ink-rule: rgba(233, 235, 239, .6);--accent: var(--g-crown);--accent-ink: var(--g-crown);--accent-soft: color-mix(in srgb, var(--g-crown) 14%, transparent);--accent-wash: color-mix(in srgb, var(--g-crown) 9%, transparent);--btn-bg: var(--text);--btn-text: var(--bg);--sheet-shadow: 0 1px 0 rgba(255, 255, 255, .04) inset, 0 1px 2px rgba(0, 0, 0, .4), 0 24px 48px -28px rgba(0, 0, 0, .8);--layer-shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 24px 56px -20px rgba(0, 0, 0, .8);color-scheme:dark}@media(prefers-color-scheme:dark){:root:not([data-theme=light]){--bg: #0e0f12;--bg-raised: #15171b;--bg-card: #15171b;--bg-sunken: #090a0c;--text: #e9ebef;--text-dim: #9ba1ab;--text-faint: #666c77;--line: rgba(233, 235, 239, .09);--line-strong: rgba(233, 235, 239, .2);--ink-rule: rgba(233, 235, 239, .6);--accent: var(--g-crown);--accent-ink: var(--g-crown);--accent-soft: color-mix(in srgb, var(--g-crown) 14%, transparent);--accent-wash: color-mix(in srgb, var(--g-crown) 9%, transparent);--btn-bg: var(--text);--btn-text: var(--bg);--sheet-shadow: 0 1px 0 rgba(255, 255, 255, .04) inset, 0 1px 2px rgba(0, 0, 0, .4), 0 24px 48px -28px rgba(0, 0, 0, .8);--layer-shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 24px 56px -20px rgba(0, 0, 0, .8);color-scheme:dark}}:lang(zh-CN){--font: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;--font-display: "Songti SC", "Noto Serif SC", "SimSun", Georgia, serif}:lang(zh-TW){--font: -apple-system, "PingFang 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.brand,:root[data-pending-view] .header .nav{visibility:hidden}img,svg{display:block;max-width:100%}a{color:var(--accent-ink);text-decoration:none}a:hover{text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}button{font:inherit;color:inherit}:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px}h1,h2,h3,h4{margin:0;line-height:1.2;letter-spacing:0;text-wrap:balance}h1,h2{font-family:var(--font-display);font-weight:400;font-feature-settings:"onum","pnum","kern","liga"}p{margin:0;text-wrap:pretty}:lang(en) h1,:lang(en) h2{letter-spacing:-.012em}.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 var(--gutter)}.chapter{position:relative;padding:clamp(64px,9vw,128px) 0}.chapter-grid{display:grid;grid-template-columns:var(--margin-col) minmax(0,1fr);column-gap:clamp(28px,4vw,56px);align-items:start}.folio{position:sticky;top:92px;display:flex;flex-direction:column;gap:14px;padding-top:6px}.folio-num{font-family:var(--font-display);font-size:44px;line-height:1;color:var(--text);font-feature-settings:"lnum","tnum";ruby-align:start;white-space:nowrap}.folio-num rt{font:500 10.5px/1 var(--font);letter-spacing:.12em;text-transform:uppercase;color:var(--accent-ink);padding-bottom:6px}:lang(zh-CN) .folio-num rt,:lang(zh-TW) .folio-num rt,:lang(ja) .folio-num rt,:lang(ko) .folio-num rt{letter-spacing:.18em;text-transform:none}.folio-rule{width:40px;height:1px;background:var(--ink-rule)}.folio-rule:after{content:"";display:block;width:14px;height:1px;background:var(--accent);margin-top:3px}.chapter-head{max-width:720px;margin-bottom:clamp(32px,5vw,56px)}.chapter-title{font-size:clamp(30px,3.8vw,46px);line-height:1.12}:lang(zh-CN) .chapter-title,:lang(zh-TW) .chapter-title,:lang(ja) .chapter-title,:lang(ko) .chapter-title{line-height:1.32;font-size:clamp(27px,3.4vw,40px)}.chapter-sub{margin-top:18px;font-size:clamp(15.5px,1.3vw,17px);color:var(--text-dim);line-height:1.75;max-width:600px}.rt-label{display:inline-flex;align-items:center;gap:10px;font-size:11.5px;font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:var(--accent-ink)}.rt-label:before{content:"";width:14px;height:1px;background:currentColor}:lang(zh-CN) .rt-label,:lang(zh-TW) .rt-label,:lang(ja) .rt-label,:lang(ko) .rt-label{letter-spacing:.2em;text-transform:none}.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:11.5px;font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:var(--accent-ink)}.eyebrow:before{content:"";width:14px;height:1px;background:currentColor}:lang(zh-CN) .eyebrow,:lang(zh-TW) .eyebrow,:lang(ja) .eyebrow,:lang(ko) .eyebrow{letter-spacing:.2em;text-transform:none}.sheet,.card{position:relative;background:var(--bg-card);border:1px solid var(--line-strong);border-radius:var(--radius);box-shadow:var(--sheet-shadow)}.sheet-stack:before{content:"";position:absolute;inset:8px -8px -8px 8px;z-index:-1;background:var(--bg-raised);border:1px solid var(--line);border-radius:var(--radius);opacity:.9}.running-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding:12px 18px;border-bottom:1px solid var(--line);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--text-faint)}:lang(zh-CN) .running-head,:lang(zh-TW) .running-head,:lang(ja) .running-head,:lang(ko) .running-head{letter-spacing:.16em;text-transform:none}.running-head b{font-weight:500;color:var(--text-dim)}.leader{display:flex;align-items:baseline;gap:10px;min-width:0}.leader:after,.leader-fill{content:"";flex:1;min-width:16px;height:1px;align-self:center;border-bottom:1px dotted var(--line-strong);transform:translateY(.1em)}.leader>:last-child{flex:none}.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:42px;padding:0 18px;border-radius:var(--radius);border:1px solid transparent;font-weight:500;font-size:14px;line-height:1.2;letter-spacing:.01em;white-space:nowrap;cursor:pointer;text-decoration:none!important;transition:background-color .15s ease,border-color .15s ease,color .15s ease,box-shadow .15s ease}.btn-primary{background:var(--btn-bg);color:var(--btn-text);border-color:var(--btn-bg)}.btn-primary:hover{background:var(--accent-ink);border-color:var(--accent-ink);color:#fff}.btn-secondary{background:transparent;color:var(--text);border-color:var(--line-strong)}.btn-secondary:hover{border-color:var(--text)}.btn-sm{min-height:32px;padding:0 12px;font-size:13px}.btn:disabled{opacity:.55;cursor:not-allowed}.chip{display:inline-flex;align-items:center;gap:6px;padding:1px 7px;border-radius:var(--radius);font-size:11px;font-weight:500;line-height:18px;letter-spacing:.06em;text-transform:uppercase;color:var(--accent-ink);border:1px solid color-mix(in srgb,var(--accent) 50%,transparent)}:lang(zh-CN) .chip,:lang(zh-TW) .chip,:lang(ja) .chip,:lang(ko) .chip{letter-spacing:.1em;text-transform:none}.chip-muted{color:var(--text-dim);border-color:var(--line-strong)}.pending{cursor:not-allowed!important;opacity:.55}.pending-badge{display:inline-flex;align-items:center;padding:0 6px;border-radius:var(--radius);font-size:11px;font-weight:500;letter-spacing:.04em;line-height:18px;color:var(--text-dim);border:1px solid var(--line-strong);white-space:nowrap}.kbd{display:inline-flex;align-items:center;justify-content:center;min-width:24px;height:24px;padding:0 6px;border-radius:3px;border:1px solid var(--line-strong);border-bottom-width:2px;background:var(--bg-raised);font:500 12px/1 var(--font-mono);color:var(--text)}.wordmark{font:400 1em/1 var(--font-mark);letter-spacing:0;color:var(--text)}.wordmark .bi{color:var(--accent-ink)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.field-input{width:100%;min-width:0;padding:10px 12px;border-radius:var(--radius);border:1px solid var(--line-strong);background:var(--bg-raised);color:var(--text);font:inherit;font-size:14px}.field-input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.word{cursor:pointer;text-decoration:underline;text-decoration-color:color-mix(in srgb,var(--accent) 55%,transparent);text-decoration-thickness:1px;text-underline-offset:.22em;transition:color .15s ease,text-decoration-color .15s ease}.word:hover,.word.active{color:var(--accent-ink);text-decoration-color:var(--accent)}ruby{ruby-align:center}ruby rt{font-size:.5em;color:var(--accent-ink);font-weight:500;letter-spacing:0}:lang(en) ruby rt{font-family:var(--font);font-size:.48em}:lang(ja) h1,:lang(ja) h2,:lang(ja) h3{word-break:auto-phrase}:lang(ko){word-break:keep-all;overflow-wrap:anywhere}@media(max-width:1023px){.chapter-grid{grid-template-columns:minmax(0,1fr);row-gap:20px}.folio{position:static;flex-direction:row;align-items:center;gap:16px;padding-top:0}.folio-num{font-size:30px}.folio-rule{flex:1;width:auto}.folio-rule:after{display:none}}