:root{--ink:#172435;--muted:#657489;--blue:#2259d9;--line:#e3e9f1;--nav:#11263d;--bg:#f5f7fb;--green:#19806a;--red:#b83b46;--radius:14px}*{box-sizing:border-box}body{margin:0;color:var(--ink);font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg)}button,input,textarea,select{font:inherit}button,a,input,textarea,select{outline-offset:4px}button{cursor:pointer}button:disabled{opacity:.55;cursor:wait}button{border:1px solid var(--line);border-radius:9px;background:#fff;color:var(--ink);padding:9px 16px}button:hover{border-color:#9fb7dc}a{color:var(--blue);text-decoration:none}h1,h2,h3,p{margin-top:0}h1{font-size:30px;letter-spacing:-1px;line-height:1.3;margin-bottom:10px}h2{font-size:21px;line-height:1.4}h3{font-size:17px;margin-bottom:6px}p{margin-bottom:14px}[hidden]{display:none!important}.muted{color:var(--muted)}.small{font-size:14px}.eyebrow{font-size:12px;letter-spacing:3px;font-weight:700;color:var(--blue);margin:24px 0 14px}.primary{background:var(--blue);color:#fff;border-color:var(--blue);font-weight:600}.primary:hover{background:#1b49b8;color:#fff}.secondary{background:#ecf2ff;border-color:#dce6fe;color:var(--blue)}.text-button{border:0;background:none;color:inherit;font-size:14px;padding:8px 0}.icon-button{border:0;background:transparent;font-size:25px;padding:0 8px}.brand-mark{width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;background:var(--blue);color:#fff;border-radius:11px;font-weight:800;font-size:23px}.login-wrap{min-height:100vh;display:grid;place-items:center;background:radial-gradient(ellipse at 80% 15%,#dae7ff 0,transparent 45%),var(--bg);padding:24px}.login-card{width:100%;max-width:430px;background:#fff;padding:44px;border:1px solid var(--line);border-radius:22px;box-shadow:0 20px 60px #16396210}.login-card .primary{width:100%;display:flex;justify-content:space-between;margin-top:22px}.login-card .small{margin:24px 0 0;text-align:center}.error{color:var(--red);font-size:14px}.sidebar{width:236px;height:100vh;position:fixed;top:0;left:0;background:var(--nav);color:#b6c6d9;padding:32px 20px;display:flex;flex-direction:column}.brand{display:flex;gap:12px;color:#fff;align-items:center;font-weight:700;font-size:19px;margin-bottom:44px;padding:0 7px}.brand 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60px}.page-heading{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:26px}.page-heading p{margin:8px 0 0}.grid{display:grid;grid-template-columns:1.5fr 1fr;gap:24px}.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;margin-bottom:20px}.card-head{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:15px}.card-head h2{margin:0}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:24px}.stat{padding:22px 24px;background:#fff;border:1px solid var(--line);border-radius:var(--radius)}.stat span{font-size:14px;color:var(--muted)}.stat strong{display:block;font-size:32px;line-height:1.5;font-weight:600;margin-top:7px}.notice{background:#edf3fe;border:1px solid #dce6fa;color:#365781;padding:14px 18px;border-radius:10px;font-size:14px;margin-bottom:22px}.empty{padding:32px 10px;text-align:center}.empty .empty-icon{font-size:32px;color:#86a1c6;margin-bottom:10px}.empty h3{margin:6px 0}.empty p{color:var(--muted);font-size:14px}.task{padding:17px 0;border-bottom:1px solid var(--line)}.task:last-child{border-bottom:0;padding-bottom:0}.task:first-child{padding-top:0}.task-line{display:flex;align-items:flex-start;gap:12px}.task-line input{width:19px;height:19px;margin-top:5px;accent-color:var(--blue);flex-shrink:0}.task-body{flex:1;min-width:0}.task-title{font-size:16px;font-weight:600;overflow-wrap:anywhere}.task-meta{font-size:13px;color:var(--muted);margin-top:5px}.task-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:5px}.task-actions button{font-size:13px;padding:3px 0;border:0;color:var(--blue)}.badge{display:inline-block;padding:3px 9px;border-radius:6px;font-size:12px;background:#eef2f7;color:#5c6d80;white-space:nowrap}.badge.green{background:#e6f5f0;color:var(--green)}.badge.blue{background:#ecf2ff;color:var(--blue)}.badge.amber{background:#fff4dc;color:#96631a}.filters{display:flex;gap:12px;margin-bottom:20px;flex-wrap:wrap}.filters select{min-width:150px;width:auto}.project-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.project-card{padding:20px;background:#fff;border:1px solid var(--line);border-radius:12px;cursor:pointer}.project-card:hover{border-color:var(--blue)}label{display:block;font-size:14px;font-weight:600;margin-bottom:18px}input,textarea,select{display:block;width:100%;border:1px solid #d6dfea;background:#fff;color:var(--ink);padding:11px 13px;border-radius:9px;margin-top:7px;font-size:15px}textarea{resize:vertical;min-height:85px;line-height:1.6}input:focus,textarea:focus,select:focus{outline:2px solid #a9c5ff;border-color:var(--blue)}input[type=checkbox]{width:auto;display:inline;margin:0 9px 0 0}.checkbox-label{font-weight:400;display:flex;align-items:flex-start;font-size:14px}.checkbox-label input{margin-top:6px}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}.ask-layout{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(250px,1fr);gap:24px}.ask-input{min-height:120px}.ask-bottom{display:flex;gap:15px;justify-content:space-between;align-items:center}.ask-bottom select{max-width:240px;margin:0}.answer{white-space:pre-wrap;overflow-wrap:anywhere;font-size:16px;line-height:1.9}.source-card{padding:14px 0;border-bottom:1px solid var(--line)}.source-card:last-child{border:0}.source-card button{border:0;padding:0;color:var(--blue);text-align:left;font-weight:600}.source-card p{font-size:14px;color:var(--muted);margin:7px 0 0;white-space:pre-wrap;overflow-wrap:anywhere}.doc-row{display:flex;gap:15px;align-items:center;padding:18px 0;border-bottom:1px solid var(--line)}.doc-row:last-child{border:0}.doc-icon{padding:10px;background:#edf3fe;border-radius:9px;color:var(--blue);font-size:20px}.doc-info{flex:1;min-width:0}.doc-info h3{overflow-wrap:anywhere}.row-actions{display:flex;gap:8px}.upload-panel{border:1px dashed #a8bad6;border-radius:12px;padding:22px;background:#fafcff}.settings-grid{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(240px,1fr);gap:24px}.settings-list{margin:0;display:grid;gap:17px}.settings-list div{display:flex;justify-content:space-between;gap:15px}.settings-list dt{color:var(--muted);font-size:14px}.settings-list dd{margin:0;font-size:14px;text-align:right}dialog{border:1px solid var(--line);border-radius:18px;max-width:600px;width:calc(100% - 32px);padding:30px;color:var(--ink);box-shadow:0 30px 90px #10284433}dialog::backdrop{background:#10243a88;backdrop-filter:blur(3px)}.dialog-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:20px}.dialog-heading h2{margin:0}dialog pre{white-space:pre-wrap;overflow-wrap:anywhere;font:15px/1.9 inherit;max-height:60vh;overflow:auto}#toast{position:fixed;bottom:30px;left:50%;transform:translateX(-50%);padding:13px 22px;border-radius:10px;background:#173149;color:white;box-shadow:0 8px 30px #10243a33;z-index:100;max-width:90vw;display:flex;gap:18px;align-items:center}#toast button{background:none;color:#a7d2ff;border:0;padding:0}.loading{padding:40px;color:var(--muted);text-align:center}.footer-note{font-size:13px;color:var(--muted);margin-top:16px}.progress-bar{height:3px;background:linear-gradient(90deg,#dce8ff,var(--blue),#dce8ff);background-size:200% 100%;animation:move 1.4s linear infinite;margin:20px 0}@keyframes move{to{background-position:-200% 0}}@media(max-width:1050px){.sidebar{width:200px;padding:26px 14px}main{margin-left:200px}.brand{font-size:17px}#page{padding:28px}.topbar{padding:20px 28px}.grid,.ask-layout,.settings-grid{grid-template-columns:1fr}.project-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:680px){.sidebar{position:sticky;top:0;width:100%;height:auto;z-index:10;padding:10px 12px;display:block}.brand{font-size:16px;margin:0 0 10px;padding:0}.brand small,.sidebar-bottom{display:none}.brand .brand-mark{width:28px;height:28px;font-size:18px;border-radius:8px}nav{display:flex;gap:4px;justify-content:space-between}.nav{font-size:14px;gap:5px;padding:9px 7px;white-space:nowrap}.nav span{display:none}main{margin-left:0}.topbar{padding:14px 18px;font-size:12px}.topbar #date{display:none}#page{padding:24px 18px 50px}h1{font-size:26px}.page-heading{align-items:flex-start;gap:10px}.page-heading button{font-size:13px;padding:8px 11px;white-space:nowrap}.card{padding:20px}.stats{gap:8px}.stat{padding:15px 12px}.stat span{font-size:12px}.stat strong{font-size:28px}.form-row{grid-template-columns:1fr;gap:0}.project-grid{grid-template-columns:1fr}.login-card{padding:32px 26px}.ask-bottom{align-items:stretch;flex-direction:column}.ask-bottom select{max-width:none}.filters select{min-width:0;flex:1}.settings-list div{flex-wrap:wrap}dialog{padding:22px}.row-actions{flex-wrap:wrap}}

.citation{padding:0 4px;border:0;background:#ecf2ff;color:var(--blue);font-size:14px;vertical-align:baseline}

.wechat-body{white-space:pre-wrap;overflow-wrap:anywhere;font-size:15px}.wechat-filters label{flex:1;min-width:140px}.wechat-meta{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:12px}.wechat-actions{display:flex;gap:10px;flex-wrap:wrap}.wechat-message{border-left:3px solid #43a586}.wechat-message.mine{border-left-color:#2259d9}@media(max-width:680px){nav{overflow-x:auto;justify-content:flex-start}.nav{flex-shrink:0}.wechat-filters label{min-width:120px}.wechat-filters input{min-width:0}}