@font-face{font-family:serif-cn;src:local('Noto Serif CJK SC'),local('Source Han Serif SC'),local('SimSun');font-display:swap}
*{box-sizing:border-box}html,body{margin:0;width:100%;height:100%;overflow-x:clip;overflow-y:hidden}
body{--bg:#101316;--ink:#e7ecee;--muted:#a5afb7;--line:#bfd0dd2c;--paper:#fbfaf8;--paper-ink:#30332f;--paper-muted:#666a61;--paper-line:#383f3426;--accent:#e9a198;--focus:#efb1a6;--header-height:76px;--footer-height:50px;--toolbar-height:104px;--gutter:clamp(24px,4vw,64px);--sans:'PingFang SC','Microsoft YaHei','Noto Sans CJK SC',sans-serif;--serif:serif-cn,'Songti SC','SimSun',serif;--mono:Consolas,'Liberation Mono',monospace;color:var(--ink);background:var(--bg);font:14px/1.6 var(--sans);-webkit-font-smoothing:antialiased;color-scheme:dark}
body.crimson{--bg:#160a11;--ink:#f3e3e8;--muted:#c39ea9;--line:#d4839636;--paper:#f4e9ec;--paper-ink:#38272f;--paper-muted:#71545f;--paper-line:#703a4b2e;--accent:#df8c9f}
[hidden]{display:none!important}button,input,select{font:inherit}button,a{color:inherit;-webkit-tap-highlight-color:transparent}button{min-height:44px;padding:8px 12px;border:0;border-radius:0;background:none;cursor:pointer;line-height:1.45;transition:color 160ms,background-color 160ms}button:disabled{opacity:.4;cursor:not-allowed}button:active:not(:disabled){background:#8e9e9e16}button svg{pointer-events:none}a{text-decoration:none;text-underline-offset:4px}
:where(button,a,input,select,summary,[tabindex]):focus-visible{outline:2px solid var(--focus);outline-offset:3px}::selection{background:#ddd5c9;color:#242622}.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip-link{position:fixed;z-index:100;top:12px;left:var(--gutter);padding:10px 16px;background:var(--ink);color:var(--bg);transform:translateY(-160%)}.skip-link:focus{transform:none}
header{position:fixed;z-index:30;inset:0 0 auto;height:var(--header-height);display:flex;align-items:center;gap:20px;padding:0 var(--gutter);border-bottom:1px solid var(--line);background:var(--bg)}.brand-group{display:flex;align-items:center;gap:22px;min-width:0}.desktop-back{font-size:12px;color:var(--muted);white-space:nowrap;min-height:44px;display:flex;align-items:center}.brand{font:700 clamp(19px,1.4vw,21px)/1.4 var(--sans);white-space:nowrap;padding:0;letter-spacing:0}
header nav{display:flex;align-items:center;gap:12px;margin-left:auto}header nav button{position:relative;white-space:nowrap;color:var(--muted)}header nav button.active{color:var(--ink)}header nav button.active:after{content:'';position:absolute;left:12px;right:12px;bottom:-8px;height:2px;background:var(--accent)}header small{margin-left:5px;font:11px var(--mono)}
.header-tools{display:flex;align-items:center;gap:8px}#theme{flex:0 0 40px;width:40px;padding:0}.skin-moon{display:block;width:19px;height:19px;margin:auto;border:1px solid #986575;border-radius:50%;background:radial-gradient(circle at 32% 24%,#ffffff24,transparent 46%,#00000040),linear-gradient(90deg,#111318 0 50%,#a34159 50%);transition:transform 300ms}body.crimson .skin-moon{transform:rotate(-18deg)}#theme.locked{opacity:.65}
.language-control{display:flex;align-items:center;border-left:1px solid var(--line);padding-left:8px}.language-control button{color:var(--muted);font-size:12px;padding:8px;min-width:38px}.language-control [aria-pressed=true]{color:var(--ink);text-decoration:underline;text-decoration-color:var(--accent);text-underline-offset:7px}
#universe{position:fixed;inset:var(--header-height) 0 calc(var(--footer-height) + var(--toolbar-height));overflow:clip}body.reading #universe{bottom:var(--footer-height)}#scene{position:absolute;inset:0}#scene canvas{display:block;width:100%;height:100%;touch-action:none}#labels:empty{display:none}#scene-hint{position:absolute;left:var(--gutter);right:var(--gutter);bottom:10px;color:var(--muted);font-size:12px;text-align:center;pointer-events:none}body.reading #scene-hint{left:124px;right:51%;bottom:6px}
#folio{position:fixed;z-index:15;left:51%;right:4%;top:94px;bottom:72px;min-width:0;opacity:1;transform:none!important;pointer-events:auto}#paper{position:relative;width:100%;height:100%;padding:28px clamp(24px,3vw,44px) 42px;overflow-x:clip;overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:#878e7e70 transparent;background:var(--paper);color:var(--paper-ink);border:1px solid #4a50401a;box-shadow:0 3px 18px #0000000c;color-scheme:light;overflow-wrap:anywhere;scroll-padding:28px}#paper :where(button,a,[tabindex]):focus-visible{--focus:#a8463c}
.paper-top{display:flex;align-items:center;justify-content:space-between;gap:12px;border-bottom:1px solid var(--paper-line);padding-bottom:14px;margin-bottom:26px;color:var(--paper-muted)}.paper-back{padding-left:0;font-size:13px}.paper-reference{display:flex;align-items:center;gap:12px;min-width:0}.paper-reference>span{font:10px/1.5 var(--mono);letter-spacing:.05em}.favorite-reference{font-size:27px;line-height:1;min-width:44px;padding:6px;color:#8b8172}.favorite-reference[aria-pressed=true]{color:#aa7134}
.film-caption{display:flex;justify-content:space-between;gap:8px 20px;flex-wrap:wrap;margin:0 0 10px;font-size:12px;color:var(--paper-muted)}.film-director{white-space:normal}#paper h1{margin:0 0 28px;font:400 clamp(25px,2.25vw,34px)/1.5 var(--serif);letter-spacing:.015em}#paper h2{margin:0;font:400 23px/1.5 var(--serif)}#paper h3{font-size:15px;font-weight:500;line-height:1.7;margin:0 0 7px}.manual-section{scroll-margin-top:28px}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:0 0 14px;margin-bottom:18px;border-bottom:1px solid var(--paper-line)}.section-heading small{font-size:11px;color:var(--paper-muted);white-space:nowrap}.section-marker{width:25px;height:2px;background:var(--method,#9fa797)}
.prompt-copy{display:block;width:100%;padding:16px 17px;text-align:left;border:1px solid var(--paper-line);background:#6d725104;color:var(--paper-ink);overflow-wrap:anywhere}.prompt-copy:hover{background:#6d725109}.prompt-copy-label{display:flex;justify-content:space-between;gap:12px;margin-bottom:12px;color:var(--paper-muted);font-size:11px}.prompt-copy-text{display:block;white-space:pre-wrap;line-height:1.85;font-size:14px;user-select:text}.full-prompt-section .prompt-copy-text{font-size:15px;line-height:1.95}
.reference-caveat{font-size:11px;line-height:1.85;color:var(--paper-muted);border-left:2px solid #d2c7b8;padding-left:12px;margin:24px 0}.verification-note{font-size:12px;line-height:1.9;color:var(--paper-muted);margin:22px 0}.reference-major{padding-top:40px;margin-bottom:8px}.reference-fragment{margin:0 0 26px}.evidence-tag{display:inline-block;font-size:10px;color:var(--paper-muted);border-bottom:1px solid var(--paper-line);margin-bottom:9px}.fragment-observation{font-size:13px;line-height:1.85;color:var(--paper-muted);margin:0 0 14px}.empty{font-size:12px;line-height:1.8;color:var(--paper-muted)}.reference-sources{padding-top:40px}.source-url{display:block;margin:0 0 14px;font-size:11px;line-height:1.85;color:var(--paper-muted);overflow-wrap:anywhere}.reference-sources a.source-url{text-decoration:underline}
#reading-elevator{position:fixed;z-index:25;left:12px;top:50%;width:104px;transform:translateY(-50%);display:flex;flex-direction:column;gap:2px;padding:8px 0;border-left:1px solid var(--line);background:linear-gradient(90deg,var(--bg),transparent)}#reading-elevator button{padding:8px 8px 8px 12px;text-align:left;min-height:38px;font-size:11px;color:var(--muted);white-space:nowrap;position:relative}#reading-elevator button[aria-current=location]{color:var(--ink)}#reading-elevator button[aria-current=location]:before{content:'';position:absolute;left:-1px;top:12px;bottom:12px;width:2px;background:var(--accent)}
.reference-toolbar{position:fixed;z-index:24;left:0;right:0;bottom:var(--footer-height);min-height:var(--toolbar-height);padding:10px var(--gutter) 6px;background:var(--bg)}.reference-toolbar-main{display:flex;align-items:center;gap:12px;flex-wrap:wrap;min-width:0}.reference-search{flex:1 1 270px;min-width:0;max-width:400px}.reference-search input{width:100%;height:44px;padding:10px 12px;border:1px solid var(--line);border-radius:0;background:#ffffff03;color:var(--ink);font-size:12px}.reference-search input::placeholder{color:var(--muted)}#archive-count{font:11px var(--mono);color:var(--muted);white-space:nowrap}#clear-filters{color:var(--muted);font-size:12px;padding:8px}#draw-reference{white-space:nowrap}.reference-toolbar-hint{font-size:11px;color:var(--muted);margin:8px 0 0}
#reference-filters{position:relative}#reference-filters summary{cursor:pointer;list-style:none;min-height:44px;display:flex;align-items:center;gap:12px;padding:8px 12px;color:var(--muted);white-space:nowrap}#reference-filters summary:after{content:'+'}#reference-filters[open] summary:after{content:'−'}#filters{position:absolute;z-index:40;left:0;bottom:52px;width:min(560px,calc(100vw - 48px));max-height:65vh;overflow:auto;overscroll-behavior:contain;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;padding:22px;background:var(--bg);border:1px solid var(--line);box-shadow:0 8px 30px #00000035}#reference-filters:not([open]) #filters{display:none}.reference-filter{display:block;min-width:0}.reference-filter>span{display:block;font-size:11px;color:var(--muted);margin-bottom:6px}.reference-filter select{width:100%;height:42px;padding:8px;color:var(--ink);background:var(--bg);border:1px solid var(--line);font-size:12px;min-width:0}

#library-empty{position:absolute;z-index:5;top:50%;left:var(--gutter);right:var(--gutter);transform:translateY(-50%);text-align:center}#library-empty h1{font:400 clamp(26px,4vw,42px)/1.5 var(--serif)}#library-empty p{color:var(--muted);font-size:13px}
footer{position:fixed;z-index:30;left:0;right:0;bottom:0;min-height:var(--footer-height);display:flex;align-items:center;justify-content:space-between;gap:18px;padding:0 var(--gutter);color:var(--muted);font-size:11px;background:var(--bg)}footer button{font-size:11px;padding:8px}footer>span{min-width:0}#notice{position:fixed;z-index:80;bottom:calc(var(--footer-height) + 12px);left:50%;width:max-content;max-width:calc(100vw - 32px);transform:translate(-50%,8px);opacity:0;pointer-events:none;background:var(--paper);color:var(--paper-ink);padding:10px 18px;box-shadow:0 3px 24px #0002;font-size:12px;transition:opacity 160ms,transform 160ms}#notice.show{opacity:1;transform:translate(-50%,0)}
#manual-info,#theme-info{width:min(520px,calc(100vw - 32px));max-height:80vh;overflow:auto;padding:28px;background:var(--paper);color:var(--paper-ink);border:0;line-height:1.9}#manual-info::backdrop,#theme-info::backdrop{background:#071018a0}#manual-info h2,#theme-info h2{font:400 26px/1.5 var(--serif)}#manual-info p,#theme-info p{font-size:13px}#manual-info button,#theme-info button,#theme-info a{border-bottom:1px solid var(--paper-line)}.theme-info-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.theme-info-actions a{display:inline-flex;align-items:center;min-height:44px;padding:8px 12px;font-size:13px}
.fallback-gallery{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:12px;padding:20px var(--gutter);height:100%;overflow:auto}.fallback-gallery button{padding:0;min-width:0;text-align:left}.fallback-gallery img{display:block;width:100%;aspect-ratio:16/9;object-fit:cover}.fallback-gallery span{display:block;font-size:11px;margin-top:5px}.fallback-reading-images{position:absolute;left:124px;right:51%;top:16px;bottom:24px;display:flex;flex-direction:column;justify-content:center;gap:18px}.fallback-reading-images figure{margin:0;min-height:0}.fallback-reading-images img{display:block;width:100%;max-height:27vh;object-fit:contain}.fallback-reading-images figcaption{font-size:11px;color:var(--muted);margin-top:6px;text-align:center}.fallback-reading-images p{text-align:center;font-size:12px;color:var(--muted)}
@media(max-width:1150px){header{gap:12px}.brand-group{gap:14px}header nav{gap:4px}.reference-toolbar-main{gap:8px}.reference-search{max-width:290px;flex-basis:220px}#filters{left:-100px}}
@media(max-width:900px){body{--gutter:20px;--reading-top:clamp(300px,53vh,426px);--toolbar-height:140px}#folio{left:20px;right:20px;top:calc(var(--reading-top) + 44px);bottom:calc(var(--footer-height) + 10px)}#paper{padding:20px 22px 32px}#reading-elevator{left:20px;right:20px;width:auto;top:var(--reading-top);height:44px;transform:none;flex-direction:row;gap:4px;border-left:0;border-bottom:1px solid var(--line);overflow-x:auto;scrollbar-width:none;padding:0;background:var(--bg)}#reading-elevator button{flex:0 0 auto;min-height:44px;padding:8px 10px}#reading-elevator button[aria-current=location]:before{left:10px;right:10px;top:auto;bottom:0;height:2px;width:auto}body.reading #scene-hint{display:none}.reference-search{max-width:none;flex-basis:240px}.fallback-gallery{grid-template-columns:repeat(4,minmax(0,1fr))}.fallback-reading-images{left:20px;right:20px;top:12px;bottom:auto;height:calc(var(--reading-top) - var(--header-height) - 24px);gap:12px}.fallback-reading-images img{max-height:calc((var(--reading-top) - var(--header-height) - 60px)/2)}}
@media(max-width:700px){body{--header-height:112px;--footer-height:56px;--toolbar-height:168px;--gutter:16px}header{padding:8px 16px;flex-wrap:wrap;gap:0;align-content:center}.brand-group{flex:0 0 100%;justify-content:space-between;gap:12px;height:42px}.brand{font-size:18px}header nav{margin-left:0;gap:0;height:44px}header nav button{padding:8px;font-size:12px}header nav button.active:after{left:8px;right:8px;bottom:0}.header-tools{margin-left:auto;gap:4px}.language-control{padding-left:4px}.language-control button{padding:7px 6px;min-width:36px;font-size:11px}#theme{width:34px;flex-basis:34px}.reference-toolbar{padding-top:8px}.reference-search{flex:0 0 100%}.reference-toolbar-main{gap:5px}.reference-toolbar-main>#reference-filters summary{padding:8px}.reference-toolbar-main>#draw-reference{padding:8px;font-size:12px}#archive-count{font-size:10px}#clear-filters{font-size:11px}.reference-toolbar-hint{margin-top:2px;font-size:10px}#filters{position:fixed;left:16px;right:16px;bottom:calc(var(--footer-height) + var(--toolbar-height));width:auto;max-height:calc(100vh - var(--header-height) - var(--footer-height) - var(--toolbar-height) - 12px);padding:16px;gap:12px}#folio{left:16px;right:16px}#reading-elevator{left:16px;right:16px}#paper{padding:18px 20px 28px}#paper h1{font-size:26px}#paper h2{font-size:21px}.paper-top{margin-bottom:22px;gap:8px}.paper-reference{gap:7px}.paper-reference>span{font-size:9px}.prompt-copy{padding:14px}.prompt-copy-text,.full-prompt-section .prompt-copy-text{font-size:13px}.section-heading small{font-size:10px}.reference-major{padding-top:30px}footer{font-size:10px;gap:10px;padding:0 16px}footer>span:last-child{display:none}.fallback-gallery{grid-template-columns:repeat(3,minmax(0,1fr));padding:12px 16px;gap:8px}.fallback-gallery span{font-size:10px}}
@media(max-width:360px){header{padding-left:12px;padding-right:12px}.brand{font-size:16px}.desktop-back{font-size:11px}header nav button{padding:7px}.language-control button{min-width:32px;padding:6px 4px}#theme{width:30px;flex-basis:30px}.reference-toolbar{padding-left:12px;padding-right:12px}#folio,#reading-elevator{left:12px;right:12px}#paper{padding:16px}.paper-reference>span{font-size:8px}.paper-reference{gap:2px}#filters{left:12px;right:12px}.fallback-gallery{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}

#self-test-toggle{font-size:12px;white-space:nowrap;padding:8px 10px;color:var(--muted)}#self-test-toggle[aria-pressed=true]{color:var(--accent)}#open-self-test-rankings{min-width:36px;padding:8px}.rank-icon{display:block;width:18px;height:18px}#pause-gallery{font-size:12px;white-space:nowrap;min-width:44px;color:var(--muted)}#pause-gallery[aria-pressed=true]{color:var(--accent)}body.reading footer>span:last-child{font-size:0}body.reading footer>span:last-child:after{content:'右键 / ESC 返回';font-size:11px}
@media(max-width:480px){body{--header-height:156px}header nav{flex:0 0 100%;height:38px}.header-tools{width:100%;margin-left:0;justify-content:flex-end;height:44px;gap:6px}.brand-group{height:44px}header nav button.active:after{bottom:0}.language-control{margin-left:4px}#self-test-toggle{padding:8px 12px}body.reading footer>span:last-child:after{display:none}}

@media(min-width:701px) and (max-width:740px){body{--header-height:112px}header{padding:8px 20px;flex-wrap:wrap;gap:0;align-content:center}.brand-group{flex:0 0 100%;height:44px;justify-content:space-between}header nav{margin-left:0;height:44px}.header-tools{margin-left:auto}header nav button.active:after{bottom:0}}

/* One compact toolbar, with no separate keyboard chooser. */
body{--toolbar-height:90px}.reference-toolbar-main{flex-wrap:nowrap}.reference-search{max-width:460px}.reference-toolbar-hint{margin-top:4px}
.hide-reference{position:relative;display:flex;align-items:center;justify-content:center;width:44px;min-width:44px;height:44px;padding:10px;color:#8b8172}
.hide-reference svg{width:23px;height:23px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}.eye-slash{opacity:0}.hide-reference[aria-pressed=true]{color:#87524c}.hide-reference[aria-pressed=true] .eye-slash{opacity:1}
.eye-tooltip{position:absolute;z-index:35;right:0;top:calc(100% + 5px);width:max-content;max-width:min(280px,70vw);padding:9px 12px;border:1px solid var(--paper-line);background:var(--paper);color:var(--paper-ink);box-shadow:0 4px 18px #28251d20;font:11px/1.65 var(--sans);text-align:left;pointer-events:none;opacity:0;visibility:hidden;transform:translateY(-3px);transition:opacity 160ms,transform 160ms,visibility 160ms}
.hide-reference:hover .eye-tooltip,.hide-reference:focus-visible .eye-tooltip{visibility:visible;opacity:1;transform:translateY(0)}
@media(max-width:900px){body{--toolbar-height:100px}.reference-search{flex:1 1 auto;min-width:100px}}
@media(max-width:700px){body{--toolbar-height:136px}.reference-toolbar-main{flex-wrap:wrap}.reference-search{flex:0 0 100%}.reference-toolbar-hint{margin-top:4px}#archive-count{margin-left:auto}.paper-reference{gap:3px}.paper-reference>span{letter-spacing:0}}
@media(prefers-reduced-motion:reduce){.eye-tooltip{transition:none}}