:root{--ink:#142e37;--muted:#62727a;--paper:#f5f7f5;--line:#d9e1dd;--red:#ad442e;--accent:#e4aa75;--serif:"Songti SC","STSong","Noto Serif CJK SC",serif;--sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);font-family:var(--sans);font-size:16px;font-synthesis:none}
*{box-sizing:border-box}body{margin:0;background:var(--paper)}button,select,textarea{font:inherit}button,select{cursor:pointer}button{color:inherit}button:disabled,select:disabled{cursor:wait;opacity:.55}button{border:0}button:focus-visible,a:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #b87548;outline-offset:4px}a{color:#225e6b;text-underline-offset:4px}p,h1,h2,h3{margin:0}button:hover:not(:disabled){filter:brightness(.94)}.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}.skip-link{position:absolute;left:15px;top:-80px;background:white;padding:15px;z-index:10}.skip-link:focus{top:15px}
.header{background:var(--ink);color:white;display:flex;justify-content:space-between;align-items:center;padding:22px max(32px,calc((100vw - 1240px)/2));gap:24px}.brand{display:flex;align-items:center;gap:16px}.brand-seal{width:42px;height:46px;border:1px solid #d6a476;display:grid;place-items:center;font:28px var(--serif);color:#e4ba93}.brand strong{font-family:var(--serif);font-size:23px;letter-spacing:2px;font-weight:600}.brand strong span{color:var(--accent);margin:0 4px}.brand small{display:block;color:#afc1c7;font-size:12px;margin-top:6px;letter-spacing:2px}.header nav{display:flex;gap:10px}.header-button{background:transparent;border:1px solid #516871;color:white;padding:10px 17px;border-radius:4px;font-size:14px}.header-button[aria-pressed=true]{background:#d9ae85;color:var(--ink);border-color:#d9ae85}
main{max-width:1240px;margin:auto;padding:34px 0 18px}.intro{display:flex;align-items:center;justify-content:space-between;gap:30px;margin-bottom:28px}.eyebrow{font-size:12px;letter-spacing:3px;color:var(--muted);margin-bottom:10px}.intro h1{font:400 32px/1.45 var(--serif);letter-spacing:1px}.mobile-break{display:none}.dialogue-info{text-align:right;max-width:320px}.dialogue-info strong{display:inline-block;font-size:14px;font-weight:500;color:var(--ink);border:1px solid var(--line);border-radius:4px;background:white;padding:8px 12px}.dialogue-info p{font-size:12px;line-height:1.6;color:var(--muted);margin-top:9px}
.scene-options{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:25px}.scene-option{display:flex;text-align:left;gap:18px;align-items:center;padding:16px 22px;border:1px solid var(--line);background:#fff;position:relative;border-radius:4px}.scene-option .scene-number{font:25px var(--serif);color:#9caeaf}.scene-option strong{display:block;font-size:16px;font-weight:500}.scene-option small{display:block;font-size:12px;color:var(--muted);margin-top:5px}.scene-option[aria-pressed=true]{background:var(--ink);border-color:var(--ink);color:white}.scene-option[aria-pressed=true] .scene-number{color:var(--accent)}.scene-option[aria-pressed=true] small{color:#b8cbd0}.scene-option[aria-pressed=true]:after{content:"";position:absolute;right:18px;top:18px;width:6px;height:6px;border:1px solid var(--accent);transform:rotate(45deg)}
.workspace{display:grid;grid-template-columns:335px minmax(0,1fr);gap:24px}.archive{min-width:0}.section-label{display:flex;justify-content:space-between;align-items:center;margin:0 0 12px}.section-label h2{font-weight:500;font-size:14px}.section-label span{font-size:12px;letter-spacing:2px;color:var(--muted)}.person-options{display:flex;gap:6px;margin-bottom:15px}.person-option{flex:1;padding:11px 5px;border:1px solid var(--line);border-radius:3px;background:transparent;font-size:14px}.person-option[aria-pressed=true]{border-color:var(--red);color:var(--red);background:#faf0ec}
.person-card{background:#fff;border:1px solid var(--line);border-top:3px solid var(--red);padding:25px 24px 22px;min-height:408px}.card-top{display:flex;justify-content:space-between;align-items:center}.card-index{font-size:12px;color:var(--muted);letter-spacing:2px}.person-mark{font:20px var(--serif);color:var(--red);border:1px solid #d9b5a8;padding:5px 8px}.person-card h3{font:38px var(--serif);letter-spacing:5px;margin:18px 0 8px}.person-role{font-size:14px;color:var(--muted)}.person-description{font-size:15px;line-height:1.8;margin:17px 0}.person-tags{display:flex;gap:8px;flex-wrap:wrap}.person-tags span{font-size:12px;color:#536960;background:#edf2ef;padding:5px 8px}.timeline{border-top:1px solid var(--line);margin-top:22px;padding-top:18px;display:grid;gap:15px}.fact{display:grid;grid-template-columns:46px 1fr;gap:12px;align-items:start}.fact-time{font-size:12px;font-family:var(--serif);color:var(--red);line-height:1.7}.fact p{font-size:14px;line-height:1.8}.fact button{background:transparent;border:0;padding:0 3px;color:#657c7d;font-size:12px;text-decoration:underline;text-underline-offset:3px}.archive-note{display:flex;gap:10px;margin:18px 2px;color:var(--muted);font-size:12px;line-height:1.8}.archive-note>span{color:var(--red);font-size:18px}
.conversation{min-width:0;background:#fff;border:1px solid var(--line);display:flex;flex-direction:column;border-radius:4px;overflow:hidden;box-shadow:0 8px 30px #142e3705}.scene-heading{padding:24px 29px;background:#e9efec;border-bottom:1px solid var(--line)}.chapter-line{display:flex;justify-content:space-between;color:#526a66;font-size:12px;letter-spacing:2px;margin-bottom:12px;gap:15px}.scene-heading h2{font:24px/1.6 var(--serif);letter-spacing:.5px}.scene-heading>p{font-size:14px;color:#637573;line-height:1.8;margin-top:9px}.chat-topline{display:flex;align-items:center;justify-content:space-between;padding:16px 28px 8px;font-size:12px;color:var(--muted)}.text-button{background:transparent;font-size:12px;color:var(--muted);text-decoration:underline;text-underline-offset:4px;padding:5px}.messages{height:260px;overflow-y:auto;padding:18px 28px 22px;scrollbar-width:thin;scrollbar-color:#b9c7c2 transparent;display:flex;flex-direction:column;gap:22px}.message{max-width:94%;flex-shrink:0}.message .speaker{font-size:12px;color:#71837d;display:flex;align-items:center;gap:10px;margin-bottom:10px}.message .speaker .label{font-size:12px;color:#a35a40;background:#f8eeea;padding:3px 6px}.message p{font-size:16px;line-height:1.95;white-space:pre-wrap;overflow-wrap:anywhere}.message.assistant{padding-left:14px;border-left:2px solid #ccb196}.message.user{align-self:flex-end;background:#eef3f1;border-radius:4px;padding:13px 18px;max-width:85%}.message.user .speaker{margin-bottom:5px}.message.notice{padding:12px 16px;background:#fff5e9;border-left:2px solid #ce9a55}.message.notice p{font-size:14px}.evidence-list{display:flex;flex-wrap:wrap;align-items:center;gap:7px;margin-top:12px;font-size:12px;color:var(--muted)}.evidence-button{background:#f4f6f4;border:1px solid #e5ebe7;border-radius:3px;padding:4px 7px;color:#5b726c;font-size:12px}.thinking{color:var(--muted);font-size:14px;padding:6px 0;animation:breathe 1.2s ease-in-out infinite}
.composer-area{border-top:1px solid #e8edea;padding:16px 28px 14px;margin-top:auto}.suggestions{display:flex;gap:7px;flex-wrap:wrap;margin-bottom:12px}.suggestion{border:1px solid var(--line);background:white;border-radius:3px;font-size:12px;line-height:1.5;padding:7px 10px;text-align:left}.suggestion:hover{border-color:#698b81}.composer-area form{display:flex;gap:12px;align-items:stretch}.composer-area textarea{flex:1;min-width:0;resize:vertical;min-height:75px;max-height:160px;padding:12px;border:1px solid #cddbd3;border-radius:4px;line-height:1.6;font-size:16px;background:#fafcfb;color:var(--ink)}textarea::placeholder{color:#82918b}.primary-button{background:var(--ink);color:white;border-radius:4px;padding:12px 18px;font-size:14px;white-space:nowrap}.composer-caption{display:flex;justify-content:space-between;align-items:center;margin-top:7px;color:var(--muted);font-size:12px}.composer-caption .text-button{color:var(--red)}.status{color:var(--red);font-size:14px;line-height:1.6}.status:not(:empty){margin-top:8px}footer{display:flex;justify-content:space-between;margin-top:28px;color:#7a8a84;font-size:12px;gap:14px}
dialog{border:1px solid #d1dcd6;border-radius:7px;padding:30px;width:min(660px,calc(100vw - 32px));max-height:85vh;overflow-y:auto;color:var(--ink);background:#fff}dialog::backdrop{background:#0e272abb;backdrop-filter:blur(4px)}.dialog-header{display:flex;justify-content:space-between;align-items:start;gap:20px;margin-bottom:23px}.dialog-header h2{font:26px var(--serif)}.dialog-close{background:#edf2ef;padding:8px 12px;font-size:14px;border-radius:4px}.dialog-description{font-size:15px;line-height:1.9;color:var(--muted);margin:0 0 20px}.source-item{padding:16px 0;border-top:1px solid var(--line)}.source-item strong{font-size:16px;font-weight:500}.source-item p{font-size:14px;color:var(--muted);line-height:1.8;margin:7px 0}.source-item a{font-size:14px}.highlight-fact{background:#eaf1ed;padding:16px;margin-bottom:18px;line-height:1.9;font-size:15px}.small-note{font-size:12px;color:var(--muted);line-height:1.8;margin:12px 0 20px}#reflection-question{font:22px/1.7 var(--serif);padding-bottom:20px}#reflection-dialog label{display:block;font-size:14px;margin-bottom:12px}#reflection{width:100%;resize:vertical;border:1px solid var(--line);border-radius:4px;padding:12px;font-size:16px;line-height:1.8}.noscript{padding:30px;color:var(--red)}.error-state{padding:50px 30px;grid-column:1/-1;line-height:1.8}
body.stage{background:#edf1ee}body.stage .intro,body.stage .archive,body.stage footer{display:none}body.stage main{max-width:1600px;padding:20px 30px}body.stage .workspace{display:block}body.stage .messages{height:calc(100vh - 490px);min-height:240px}body.stage .message p{font-size:clamp(22px,2.2vw,30px);line-height:1.9}body.stage .scene-heading h2{font-size:30px}body.stage .suggestion{font-size:16px}body.stage .speaker,body.stage .label,body.stage .chat-topline,body.stage .evidence-list{font-size:14px}body.stage .scene-options{margin-bottom:15px}
@keyframes breathe{50%{opacity:.5}}@media(prefers-reduced-motion:reduce){.thinking{animation:none}*{scroll-behavior:auto!important}}
.suggestion,.text-button{font-size:14px}body.stage .archive{display:block}body.stage .archive .section-label,body.stage .archive .person-card,body.stage .archive .archive-note{display:none}body.stage .person-options{margin-bottom:14px}body.stage .person-option{font-size:16px}body.stage .scene-heading>p{display:none}body.stage .scene-heading{padding-top:16px;padding-bottom:16px}
@media(max-width:1300px){main{margin:0 32px}.header{padding-left:32px;padding-right:32px}}
@media(max-width:960px){.workspace{grid-template-columns:275px minmax(0,1fr);gap:18px}.person-card{padding:22px 20px}.messages,.composer-area{padding-left:20px;padding-right:20px}.scene-heading{padding:22px 20px}.scene-heading h2{font-size:22px}.intro h1{font-size:28px}}
@media(max-width:720px){.header{padding:17px 20px;gap:15px}.brand{gap:10px}.brand-seal{width:33px;height:37px;font-size:22px}.brand strong{font-size:18px;letter-spacing:1px}.brand small{font-size:10px;letter-spacing:1px}.header nav{gap:5px;flex-direction:column}.header-button{font-size:12px;padding:6px 10px}main{margin:0 20px;padding-top:25px}.intro{align-items:flex-start;gap:16px;margin-bottom:20px;flex-direction:column}.intro h1{font-size:29px}.mobile-break{display:block}.dialogue-info{text-align:left;max-width:none}.dialogue-info p{margin-top:6px}.scene-options{gap:7px;margin-bottom:22px}.scene-option{padding:12px 9px;display:block}.scene-option .scene-number{font-size:20px;margin-bottom:8px}.scene-option strong{font-size:14px}.scene-option small{font-size:10px;letter-spacing:0}.scene-option[aria-pressed=true]:after{right:10px;top:12px}.workspace{display:flex;flex-direction:column;gap:12px}.person-card{padding:18px;min-height:0}.card-top{display:none}.person-card h3{font-size:28px;margin:0 0 8px;letter-spacing:3px}.person-description{margin:10px 0}.person-tags{display:none}.timeline{margin-top:15px;padding-top:13px;gap:8px}.timeline .fact:nth-child(n+2){display:none}.fact p{font-size:14px}.archive-note{margin:12px 2px}.scene-heading{padding:20px}.scene-heading h2{font-size:22px}.messages{height:330px;padding:18px 20px}.message{max-width:100%}.message p{font-size:16px}.chat-topline{padding-left:20px;padding-right:20px}.composer-area{padding:14px 16px}.composer-area form{gap:8px}.primary-button{padding:10px 12px}.suggestion{font-size:12px}.composer-caption>span{font-size:10px}footer{flex-direction:column;gap:8px;line-height:1.8;margin-top:20px}dialog{padding:23px}body.stage main{padding:15px 0;margin:0 15px}body.stage .scene-heading h2{font-size:23px}body.stage .messages{height:calc(100dvh - 490px);min-height:280px}body.stage .message p{font-size:21px}body.stage .suggestion{font-size:14px}}
@media(max-width:720px){.person-card{display:none}.person-options{margin-bottom:0}.archive-note{margin-bottom:3px}.suggestion{font-size:14px}.scene-option small{font-size:12px}.header-button{font-size:14px}}
#export-text{width:100%;padding:12px;border:1px solid var(--line);background:#f6f8f6;color:var(--ink);font-size:16px;line-height:1.7;resize:vertical}#export-fallback{margin-top:20px}
.workspace{grid-template-columns:275px minmax(0,1fr)}.dialogue-body{display:grid;grid-template-columns:230px minmax(0,1fr);border-top:1px solid #eef2ef;min-width:0}.avatar-panel{background:#f4f7f5;border-right:1px solid var(--line);padding:14px 10px 18px;display:flex;align-items:center;flex-direction:column;justify-content:center;min-width:0}.avatar-window{width:100%;aspect-ratio:1;overflow:hidden}.avatar-sprite{width:100%;height:100%;background-repeat:no-repeat;background-size:300% 200%;background-position:0 0;transform-origin:50% 90%}.avatar-sprite[data-person=zhong]{background-image:url('/avatars/zhong-sheet.png')}.avatar-sprite[data-person=chen]{background-image:url('/avatars/chen-sheet.png')}.avatar-sprite[data-person=peng]{background-image:url('/avatars/peng-sheet.png')}.avatar-sprite[data-frame='1']{background-position:50% 0}.avatar-sprite[data-frame='2']{background-position:100% 0}.avatar-sprite[data-frame='3']{background-position:0 100%}.avatar-sprite[data-frame='4']{background-position:50% 100%}.avatar-sprite[data-frame='5']{background-position:100% 100%}.avatar-sprite[data-state=speaking]{animation:avatar-speak 2.7s ease-in-out infinite}.avatar-sprite[data-state=thinking]{animation:avatar-think 4s ease-in-out infinite}.avatar-caption{display:flex;align-items:center;justify-content:center;gap:12px;flex-wrap:wrap;margin-top:6px}.avatar-caption strong{font:22px var(--serif);letter-spacing:2px}.avatar-caption>span{font-size:12px;color:var(--muted)}.avatar-disclosure{font-size:12px;color:var(--muted);margin:12px 0;line-height:1.8;text-align:center}.avatar-controls{display:flex;flex-wrap:wrap;gap:4px;justify-content:center}.avatar-controls button{font-size:12px}.dialogue-body .messages{height:345px;padding:16px 22px}.dialogue-body [hidden]{display:none!important}.dialogue-body .message p{font-size:17px}body.stage .dialogue-body{grid-template-columns:340px minmax(0,1fr)}body.stage .dialogue-body .messages{height:calc(100dvh - 475px);min-height:340px}body.stage .dialogue-body .message p{font-size:clamp(23px,2.1vw,30px)}body.stage .avatar-caption strong{font-size:28px}body.stage .avatar-caption>span,body.stage .avatar-controls button{font-size:14px}
@keyframes avatar-speak{0%,100%{transform:translateY(0) rotate(0deg)}50%{transform:translateY(-2px) rotate(.5deg)}}@keyframes avatar-think{0%,100%{transform:translateY(0)}50%{transform:translateY(-2px)}}@media(prefers-reduced-motion:reduce){.avatar-sprite{animation:none!important}}
@media(max-width:1100px){.workspace{grid-template-columns:240px minmax(0,1fr);gap:16px}.dialogue-body{grid-template-columns:180px minmax(0,1fr)}.dialogue-body .messages{padding:16px 18px}}
@media(max-width:850px){.workspace{grid-template-columns:220px minmax(0,1fr)}.dialogue-body{grid-template-columns:145px minmax(0,1fr)}.avatar-panel{padding:8px}.avatar-caption{gap:8px}.avatar-caption strong{font-size:20px}.dialogue-body .message p{font-size:16px}}
@media(max-width:720px){.workspace{display:flex}.dialogue-body{grid-template-columns:1fr}.avatar-panel{border-right:0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:115px minmax(0,1fr);column-gap:15px;padding:10px 16px;justify-items:start}.avatar-window{grid-row:1/4}.avatar-caption{margin-top:0;justify-content:start}.avatar-disclosure{text-align:left;margin:4px 0}.avatar-controls{justify-content:start;gap:5px}.avatar-controls .text-button{padding-left:0}.dialogue-body .messages{height:310px;padding:18px}.scene-heading>p{display:none}.scene-heading{padding:16px 18px}.scene-heading h2{font-size:20px}body.stage .dialogue-body{grid-template-columns:1fr}body.stage .avatar-panel{grid-template-columns:140px minmax(0,1fr)}body.stage .dialogue-body .messages{height:calc(100dvh - 600px);min-height:300px}body.stage .dialogue-body .message p{font-size:22px}}
/* 下排生成帧的头部略高；只调整网页显示位置，原图保持完整。 */
.avatar-sprite[data-person=chen][data-frame='3'],.avatar-sprite[data-person=chen][data-frame='4'],.avatar-sprite[data-person=chen][data-frame='5']{translate:0 3.7%}
.avatar-sprite[data-person=zhong][data-frame='3'],.avatar-sprite[data-person=zhong][data-frame='4'],.avatar-sprite[data-person=zhong][data-frame='5']{translate:0 4.7%}
/* 写实2.5D人像：纹理网格中的头肩动作与面部、手势分别控制。 */
.dialogue-body{grid-template-columns:290px minmax(0,1fr)}
.avatar-panel{padding:12px 10px 20px;background:radial-gradient(ellipse at 50% 40%,#e4ede8 0,#f1f5f2 65%)}
.avatar-window{isolation:isolate}
.avatar-sprite{position:relative}
.avatar-sprite.has-rig{background-image:none!important;animation:none!important;translate:none!important}
.portrait-canvas{position:absolute;inset:0;width:100%;height:100%;display:none}
.has-rig .portrait-canvas{display:block}
.avatar-caption strong{font-size:25px}
.avatar-controls button,.avatar-caption>span{font-size:14px}
body.stage .dialogue-body{grid-template-columns:420px minmax(0,1fr)}
body.stage .avatar-panel{padding:10px 18px 18px}
@media(max-width:1100px){.workspace{grid-template-columns:220px minmax(0,1fr)}.dialogue-body{grid-template-columns:235px minmax(0,1fr)}}
@media(max-width:950px) and (min-width:721px){.workspace{grid-template-columns:1fr}.archive{display:grid;grid-template-columns:1fr 1fr;gap:10px}.archive .person-card{display:none}.archive .archive-note{grid-column:1/-1;margin:0 0 10px}.person-options{margin-bottom:0}.section-label{margin-bottom:0}.dialogue-body{grid-template-columns:260px minmax(0,1fr)}}
@media(max-width:720px){.dialogue-body{grid-template-columns:1fr}.avatar-panel{grid-template-columns:150px minmax(0,1fr);column-gap:12px;padding:8px 14px}.avatar-caption{flex-direction:column;align-items:start;gap:5px}.avatar-caption strong{font-size:24px}.avatar-controls{flex-direction:column;align-items:start}.avatar-disclosure{font-size:12px;line-height:1.6}.dialogue-body .messages{height:310px}body.stage .avatar-panel{grid-template-columns:175px minmax(0,1fr);padding:8px 12px}}
@media(min-width:721px){
 body.stage .header{padding:12px 30px}
 body.stage main{padding:12px 24px 14px;margin:auto}
 body.stage .scene-options{margin-bottom:10px}
 body.stage .scene-option{padding:10px 18px}
 body.stage .person-options{margin-bottom:10px}
 body.stage .person-option{padding:9px 5px}
 body.stage .scene-heading{padding:12px 24px}
 body.stage .scene-heading h2{font-size:28px}
 body.stage .chapter-line{margin-bottom:8px}
 body.stage .chat-topline{padding:10px 24px 8px}
 body.stage .avatar-panel{padding:8px 16px 10px}
 body.stage .avatar-window{width:min(100%,max(180px,calc(100dvh - 630px)))}
 body.stage .avatar-caption{margin-top:4px;gap:10px}
 body.stage .avatar-caption strong{font-size:25px}
 body.stage .avatar-disclosure{margin:5px 0}
 body.stage .dialogue-body .messages{height:calc(100dvh - 520px);min-height:300px}
 body.stage .composer-area{padding:12px 24px 10px}
 body.stage .suggestions{margin-bottom:10px}
 body.stage .suggestion{font-size:14px}
}
[hidden]{display:none!important}