.a2-reference{--ref-paper:#f5f2e9;--ref-rule:#c9c5b8;--ref-blue:#176c89;--ref-ink:#243b40;--ref-muted:#66736e;--ref-rust:#9a633b;color:#182326;padding:108px 0 70px;background:linear-gradient(180deg,#fafaf7,#eeeee7 72%,#fafaf7);overflow:hidden}
.a2-reference *{box-sizing:border-box}.a2-reference button{appearance:none;display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:0;background:none;box-shadow:none;color:inherit;font:inherit;letter-spacing:normal;line-height:1.4;cursor:pointer;text-transform:none;min-width:0;min-height:44px;padding:0}.a2-reference button[aria-pressed=true]{background:none;color:var(--ref-blue);box-shadow:none}.a2-reference button:hover{transform:none}.a2-reference button:focus-visible,.a2-reference a:focus-visible{outline:2px solid var(--ref-blue);outline-offset:5px}.a2-reference h2,.a2-reference h3,.a2-reference p{margin:0}.a2-reference a{color:var(--ref-blue);text-decoration:none}.a2-reference .ref-heading{position:static;inset:auto;z-index:auto;background:none;backdrop-filter:none;border:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:7%;align-items:end;margin-bottom:54px}.a2-reference .a2-kicker{display:flex;align-items:center;gap:18px;margin-bottom:20px}.a2-reference .ref-coming{display:inline-block;padding:4px 10px;border:1px solid #bec9c3;border-radius:20px;color:#69756e;font-size:11px;font-weight:400;letter-spacing:.05em}.a2-reference .a2-lead{max-width:540px;line-height:1.65;color:#566268}.a2-reference .ref-follow{display:inline-flex;align-items:center;gap:32px;margin-top:21px;font-size:15px}.a2-reference .ref-follow>span{font-size:23px}.a2-reference .ref-small{font-size:10px;font-weight:500;letter-spacing:.12em;text-transform:uppercase;line-height:1.6}.a2-reference .ref-atlas{position:relative;background:#294849;border-radius:6px 6px 3px 3px;padding:0 12px 10px;box-shadow:0 28px 44px -34px #1d393c80,0 4px 0 #1b3536,0 5px 0 #aeb6ac}.a2-reference .ref-atlas-bar{display:flex;align-items:center;justify-content:space-between;padding:18px 19px 16px;color:#e1e7dd;font-size:11px;letter-spacing:.12em;text-transform:uppercase}.a2-reference .ref-atlas-bar>span:first-child{display:flex;align-items:center;gap:12px}.a2-reference .ref-atlas-bar>span:last-child{font-size:10px;color:#b3c4ba;letter-spacing:.06em;text-transform:none}.a2-reference .ref-atlas-bar svg{width:24px;height:22px;fill:none;stroke:#c4c7a6;stroke-width:1}.a2-reference .ref-topic-tabs{display:flex;align-items:end;gap:5px;padding:0 17px;background:#294849}.a2-reference .ref-topic-tabs button{padding:12px 22px 11px;border-radius:4px 4px 0 0;color:#c5d3c9;min-height:47px;font-size:13px;position:relative;gap:10px;background:linear-gradient(#365859,#2e4c4d);border:1px solid #496361;border-bottom:0;transition:background .25s,color .25s}.a2-reference .ref-topic-tabs button[aria-pressed=true]{background:#f3f0e7;color:#294849;box-shadow:0 -3px 10px #0d29261a;border-color:#e5e2d7;z-index:2}.a2-reference .ref-tab-mark{font-family:Georgia,serif;font-size:20px;line-height:1}.a2-reference .ref-book{display:grid;grid-template-columns:46% 54%;position:relative;background:var(--ref-paper);box-shadow:0 2px 1px #aba896,0 4px 0 #e2dfd1,0 5px 1px #9e9f8e,0 7px 0 #d9d7ca;border-radius:1px;min-height:600px}.a2-reference .ref-book:after{content:"";position:absolute;inset:0 auto 0 46%;width:24px;transform:translateX(-50%);pointer-events:none;background:linear-gradient(90deg,transparent,#4f574c12 30%,#52604f22 49%,#fffcf6b0 52%,#a7a99415 70%,transparent);z-index:2}.a2-reference .ref-page{position:relative;padding:26px 36px 27px;background-image:repeating-linear-gradient(93deg,#a8a38e04 0px,#a8a38e04 1px,transparent 1px,transparent 4px)}.a2-reference .ref-plate{background-color:#f2efe5;background-image:linear-gradient(90deg,#f8f6ee 0%,#efede2 96%,#e4e1d2 100%)}.a2-reference .ref-page-running{font-size:10px;letter-spacing:.11em;text-transform:uppercase;display:flex;align-items:center;justify-content:space-between;color:#7c8171;padding-bottom:16px;border-bottom:1px solid #c9cbbd8c;min-height:31px}.a2-reference .ref-plate h3{font-family:Georgia,'Times New Roman',serif;font-size:31px;font-weight:400;line-height:1.16;letter-spacing:-.03em;margin:26px 0 7px;color:#274a4a}.a2-reference .ref-drawing{height:246px;display:flex;align-items:center;justify-content:center;position:relative}.a2-reference .ref-drawing svg{display:block;width:100%;height:100%;overflow:visible}.a2-reference .ref-drawing svg text{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;fill:#56726f}.a2-reference .ref-drawing svg .ref-serif-svg{font-family:Georgia,'Times New Roman',serif}.a2-reference .ref-ink-line{fill:none;stroke:#587b77;stroke-width:1.1;stroke-linecap:round;stroke-linejoin:round}.a2-reference .ref-dashed{stroke-dasharray:4 5}.a2-reference .ref-emphasis{stroke:#176c89;stroke-width:1.8}.a2-reference .ref-acoustic-line{stroke-dasharray:5 8;animation:ref-ray-flow 5s linear infinite}.a2-reference .ref-drawing .ref-movable{transition:transform .75s cubic-bezier(.2,.7,.2,1)}.a2-reference .ref-context{margin-top:7px}.a2-reference .ref-context>span{display:block;color:#768073;margin-bottom:8px}.a2-reference .ref-context>div{display:flex;border:1px solid #c5caba;border-radius:3px;overflow:hidden}.a2-reference .ref-context button{flex:1;font-size:12px;min-height:42px;padding:8px 7px;color:#5e6e62;background:#f8f7ef;border:0}.a2-reference .ref-context button+button{border-left:1px solid #c5caba}.a2-reference .ref-context button[aria-pressed=true]{background:#dce8df;color:#244c49;box-shadow:inset 0 -2px #507b6d}.a2-reference .ref-plate-caption{display:flex;align-items:center;gap:16px;margin-top:20px;color:#879181}.a2-reference .ref-plate-caption .ref-small{font-size:9px;letter-spacing:.07em}.a2-reference .ref-plate-rule{height:8px;flex:1;min-width:20px;background:repeating-linear-gradient(90deg,#a5b3a0,#a5b3a0 1px,transparent 1px,transparent 4px);border-top:1px solid #a5b3a0}.a2-reference .ref-reading{padding-left:42px;padding-right:38px}.a2-reference .ref-reading:before{content:"";position:absolute;top:0;right:0;width:24px;height:24px;background:linear-gradient(225deg,#dee0d2 48%,#f9f8f0 51%);filter:drop-shadow(-1px 2px 1px #56624a15)}.a2-reference .ref-stitched{width:22px;height:10px;background:repeating-linear-gradient(90deg,#9b8f6f,#9b8f6f 1px,transparent 1px,transparent 5px);opacity:.6}.a2-reference .ref-reading h3{font-family:Georgia,'Times New Roman',serif;font-size:28px;font-weight:400;line-height:1.24;letter-spacing:-.025em;margin:25px 0 20px;max-width:470px}.a2-reference .ref-reading-mode{display:flex;gap:23px;border-bottom:1px solid #cbd0c1;margin-bottom:21px}.a2-reference .ref-reading-mode button{font-size:12px;position:relative;min-height:37px;padding-bottom:8px;color:#758171;justify-content:flex-start}.a2-reference .ref-reading-mode button[aria-pressed=true]{color:#254d4c}.a2-reference .ref-reading-mode button[aria-pressed=true]:after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;background:#476e64}.a2-reference .ref-reading-content{min-height:195px;display:flex;flex-direction:column;justify-content:flex-start;gap:20px}.a2-reference .ref-claim{display:grid;grid-template-columns:5px 1fr;column-gap:14px}.a2-reference .ref-claim:before{content:"";grid-row:1/3;display:block;background:#6b998a;border-radius:2px;margin-top:3px}.a2-reference .ref-claim.ref-inference:before{background:#b79b6c}.a2-reference .ref-claim .ref-small{color:#537665;font-size:9px;margin-bottom:5px;letter-spacing:.1em}.a2-reference .ref-claim.ref-inference .ref-small{color:#987b4d}.a2-reference .ref-claim p{font-size:15px;line-height:1.6;color:#46594f}.a2-reference .ref-compare{border-top:1px solid #cbd0c1}.a2-reference .ref-compare-row{display:grid;grid-template-columns:110px 1fr;gap:17px;padding:13px 0;border-bottom:1px solid #cbd0c1;font-size:14px;line-height:1.5;color:#46594f}.a2-reference .ref-compare-row strong{font-size:11px;font-weight:500;color:#315a53}.a2-reference .ref-comparison-note{font-size:11px;line-height:1.6;color:#8a8069;padding-top:10px}.a2-reference .ref-next-question{margin-top:20px;padding:14px 0 14px;border-top:1px solid #cbd0c1;border-bottom:1px solid #cbd0c1}.a2-reference .ref-next-question>.ref-small{font-size:9px;color:#889078}.a2-reference .ref-next-question p{font-family:Georgia,'Times New Roman',serif;font-size:17px;line-height:1.45;color:#53684f;margin-top:4px;font-style:italic}.a2-reference .ref-source-link{width:100%;justify-content:space-between;gap:15px;text-align:left;font-size:12px;color:#416954;margin-top:10px;min-height:45px}.a2-reference .ref-round{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;flex:none;border:1px solid #b8c4ae;border-radius:50%;font-size:19px}.a2-reference .ref-book-foot{display:flex;justify-content:space-between;gap:15px;padding:22px 19px 4px;color:#bdcdc1;font-size:10px;letter-spacing:.04em}.a2-reference .ref-book-foot>span:last-child{color:#97b5a6}.a2-reference .ref-source-shelf{display:grid;grid-template-columns:1fr repeat(3,1.2fr);gap:15px;margin:38px 12px 0;align-items:center}.a2-reference .ref-shelf-intro{font-family:Georgia,'Times New Roman',serif;font-size:20px;line-height:1.35;color:#647564}.a2-reference .ref-shelf-intro>.ref-small{font-family:system-ui,sans-serif;display:block;font-size:9px;margin-bottom:8px;color:#7b8b78}.a2-reference .ref-source-object{min-height:101px;text-align:left;justify-content:flex-start;align-items:flex-start;gap:12px;padding:18px 12px 16px 15px;background:#faf8ef;border:1px solid #d0d0bc;box-shadow:0 3px 0 -1px #f4f2e6,0 4px 0 -1px #c8cebb,0 7px 10px #69795f0b;transform:rotate(-1.2deg);transition:box-shadow .3s,background .3s;position:relative}.a2-reference .ref-source-object:nth-of-type(2){transform:rotate(.5deg)}.a2-reference .ref-source-object:nth-of-type(3){transform:rotate(-.4deg)}.a2-reference .ref-source-object:hover{background:#fffdf3;box-shadow:0 4px 0 -1px #f4f2e6,0 5px 0 -1px #c8cebb,0 10px 17px #69795f20;transform:rotate(0)}.a2-reference .ref-source-seal{display:flex;align-items:center;justify-content:center;flex:none;width:28px;height:36px;border:1px solid #9cae97;color:#648065;font:20px Georgia,serif;box-shadow:inset 0 0 0 3px #faf8ef,inset 0 0 0 4px #c6cebb;margin-top:3px}.a2-reference .ref-source-object small{display:block;font-size:9px;color:#7b876e;line-height:1.5}.a2-reference .ref-source-object strong{display:block;font-family:Georgia,'Times New Roman',serif;font-size:16px;font-weight:400;color:#3a574c;line-height:1.3;margin-top:5px}.a2-reference .ref-source-object em{display:block;font-style:normal;font-size:9px;color:#8a8d76;margin-top:6px;line-height:1.5}.a2-reference .ref-source-arrow{font-size:18px;margin-left:auto;color:#7a8b70}.a2-reference .ref-library-note{text-align:center;margin-top:34px;color:#818a78;font-size:12px;line-height:1.7}.a2-reference .ref-sr{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.a2-reference .ref-evidence{color:#243b40;width:min(590px,calc(100vw - 36px));max-height:calc(100dvh - 50px);margin:auto;padding:28px 35px 30px;border:1px solid #a8b7a2;border-radius:4px;background:linear-gradient(90deg,#f6f3e9,#fdfbf2);box-shadow:0 30px 90px #162d3c60;overflow:auto}.a2-reference .ref-evidence::backdrop{background:#122d35aa;backdrop-filter:blur(7px)}.a2-reference .ref-evidence-top{display:flex;align-items:center;justify-content:space-between;color:#7d876e;border-bottom:1px solid #cad0bd;padding-bottom:14px;margin-bottom:28px}.a2-reference .ref-evidence-close{width:36px;height:36px;min-height:36px;border:1px solid #bdc8b0;border-radius:50%;font-size:25px;line-height:1;color:#53664c}.a2-reference .ref-evidence-close>span{display:block;transform:translateY(-1px)}.a2-reference .ref-evidence-publisher{color:#758468;font-size:11px;letter-spacing:.1em;text-transform:uppercase}.a2-reference .ref-evidence h3{font-family:Georgia,serif;font-size:32px;line-height:1.15;font-weight:400;margin:10px 0 12px}.a2-reference .ref-evidence-kind{font-size:11px;color:#8b927d}.a2-reference .ref-evidence-body{margin:25px 0;display:grid;gap:20px}.a2-reference .ref-evidence-body h4{font-size:10px;font-weight:500;color:#677d5c;text-transform:uppercase;letter-spacing:.1em;margin:0 0 8px}.a2-reference .ref-evidence-body p{font-size:15px;line-height:1.6}.a2-reference .ref-provenance{margin:20px 0 24px;border-block:1px solid #cad0bd;padding:13px 0;display:grid;gap:8px;font-size:11px;color:#7d876f}.a2-reference .ref-provenance>div{display:grid;grid-template-columns:90px 1fr;gap:15px}.a2-reference .ref-provenance dt,.a2-reference .ref-provenance dd{margin:0}.a2-reference .ref-evidence-original{display:flex;align-items:center;justify-content:space-between;min-height:44px;color:#426b59;font-size:14px}.a2-reference .ref-evidence-note{font-size:10px;line-height:1.6;color:#93977f;margin-top:18px}.a2-reference .ref-audit-arrow{transform-origin:center;animation:ref-arrow-breathe 5s ease-in-out infinite}
@keyframes ref-ray-flow{to{stroke-dashoffset:-52}}@keyframes ref-arrow-breathe{0%,100%{opacity:.5}50%{opacity:1}}
html[data-apps-motion=paused] .a2-reference *,html[data-apps-motion=paused] .a2-reference *:before,html[data-apps-motion=paused] .a2-reference *:after{animation:none!important;transition:none!important}
@media(prefers-reduced-motion:reduce){.a2-reference *,.a2-reference *:before,.a2-reference *:after{animation:none!important;transition:none!important}}
@media(max-width:1100px){.a2-reference .ref-page{padding-inline:25px}.a2-reference .ref-reading{padding-left:31px}.a2-reference .ref-plate h3{font-size:28px}.a2-reference .ref-reading h3{font-size:25px}.a2-reference .ref-reading-content{min-height:220px}.a2-reference .ref-source-shelf{grid-template-columns:repeat(3,1fr)}.a2-reference .ref-shelf-intro{grid-column:1/-1;display:flex;align-items:center;gap:20px;font-size:17px}.a2-reference .ref-shelf-intro br{display:none}.a2-reference .ref-shelf-intro>.ref-small{margin:0}.a2-reference .ref-source-object{min-height:105px}}
@media(max-width:760px){.a2-reference{padding:72px 0 52px}.a2-reference .ref-heading{grid-template-columns:1fr;gap:25px;margin-bottom:34px}.a2-reference .a2-title br{display:none}.a2-reference .a2-title{max-width:450px}.a2-reference .a2-lead{font-size:17px;max-width:580px}.a2-reference .ref-atlas{padding:0 7px 8px;margin-inline:-5px}.a2-reference .ref-atlas-bar{padding:17px 12px;font-size:10px;letter-spacing:.08em}.a2-reference .ref-atlas-bar>span:last-child{max-width:100px;font-size:9px;text-align:right;line-height:1.6}.a2-reference .ref-topic-tabs{padding:0 6px;gap:3px}.a2-reference .ref-topic-tabs button{flex:1;padding:10px 8px;font-size:10px;gap:4px;min-height:51px;text-align:left;justify-content:flex-start;line-height:1.3}.a2-reference .ref-tab-mark{font-size:16px}.a2-reference .ref-book{grid-template-columns:1fr;min-height:0}.a2-reference .ref-book:after{display:none}.a2-reference .ref-page{padding:22px 23px}.a2-reference .ref-plate{background:linear-gradient(105deg,#f6f3e9,#eeecdf)}.a2-reference .ref-plate h3{font-size:29px;margin:21px 0 1px;max-width:350px}.a2-reference .ref-drawing{height:224px;max-width:470px;margin:auto}.a2-reference .ref-plate-caption{margin-top:15px}.a2-reference .ref-context{margin-top:2px}.a2-reference .ref-reading{border-top:1px solid #bfc7b0;background-image:linear-gradient(#65775310,transparent 16px);padding-top:24px}.a2-reference .ref-reading h3{font-size:27px;margin:22px 0 17px;max-width:450px}.a2-reference .ref-reading-content{min-height:0;gap:21px}.a2-reference .ref-claim p{font-size:15px}.a2-reference .ref-reading-mode{gap:25px}.a2-reference .ref-reading-mode button{font-size:11px}.a2-reference .ref-compare-row{grid-template-columns:90px 1fr;font-size:13px;gap:14px}.a2-reference .ref-next-question{margin-top:23px}.a2-reference .ref-source-link{font-size:11px}.a2-reference .ref-book-foot{padding:19px 10px 5px;font-size:9px;display:block}.a2-reference .ref-book-foot>span:last-child{display:block;margin-top:6px}.a2-reference .ref-source-shelf{margin:30px 0 0;gap:12px;grid-template-columns:1fr}.a2-reference .ref-shelf-intro{display:block;font-size:20px;margin-bottom:7px}.a2-reference .ref-shelf-intro>.ref-small{margin-bottom:5px}.a2-reference .ref-source-object,.a2-reference .ref-source-object:nth-of-type(2),.a2-reference .ref-source-object:nth-of-type(3){min-height:88px;transform:none;padding:15px 17px;align-items:center}.a2-reference .ref-source-object strong{font-size:18px;margin-top:3px}.a2-reference .ref-source-object small{font-size:10px}.a2-reference .ref-source-object em{font-size:10px;margin-top:4px}.a2-reference .ref-source-seal{width:32px;height:42px}.a2-reference .ref-library-note{max-width:290px;margin:27px auto 0;font-size:11px}.a2-reference .ref-evidence{padding:23px;width:calc(100vw - 28px)}.a2-reference .ref-evidence h3{font-size:28px}}
@media(max-width:370px){.a2-reference .ref-page{padding-inline:17px}.a2-reference .ref-topic-tabs button{font-size:9px;padding-inline:6px}.a2-reference .ref-tab-mark{display:none}.a2-reference .ref-plate h3{font-size:26px}.a2-reference .ref-drawing{height:202px}.a2-reference .ref-context button{font-size:11px}.a2-reference .ref-reading h3{font-size:25px}.a2-reference .ref-reading-mode{gap:15px}.a2-reference .ref-reading-mode button{font-size:10px}.a2-reference .ref-claim p{font-size:14px}.a2-reference .ref-source-link{font-size:10px}}
html[data-theme=dark] .a2-reference{background:linear-gradient(#171a19,#262e26);color:#eef2ef}html[data-theme=dark] .a2-reference .a2-lead{color:#b8c7c5}html[data-theme=dark] .a2-reference .a2-kicker,html[data-theme=dark] .a2-reference .ref-follow{color:#92d0df}html[data-theme=dark] .a2-reference .ref-book{color:#243b40}html[data-theme=dark] .a2-reference .ref-reading h3{color:#243b40}html[data-theme=dark] .a2-reference .ref-shelf-intro{color:#b3c4a9}html[data-theme=dark] .a2-reference .ref-coming{color:#b8c7c5;border-color:#52614d}