:root{color-scheme:light;--archive-blue: #173f5f;--archive-blue-deep: #0d2b40;--paper: #f7f8f5;--paper-raised: #ffffff;--graphite: #172026;--muted: #68747a;--mist: #dde3e1;--mist-light: #edf0ee;--index-orange: #d96c2c;--error: #a43b35;--display: "Songti SC", "STSong", "Noto Serif CJK SC", serif;--body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;--utility: "SFMono-Regular", Consolas, "Liberation Mono", monospace}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%}body{min-width:320px;overflow:hidden;background:var(--paper);color:var(--graphite);font-family:var(--body);-webkit-font-smoothing:antialiased}button,input,textarea{border-radius:0;font:inherit}button:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid rgba(217,108,44,.34);outline-offset:2px}.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}.app{display:flex;height:100%;flex-direction:column}.app-header{z-index:2;display:flex;min-height:84px;align-items:center;justify-content:space-between;gap:32px;padding:14px clamp(20px,3vw,46px);background:var(--archive-blue);color:#fff}.brand{display:flex;align-items:center;gap:14px}.brand-mark{display:grid;width:48px;height:48px;place-items:center;border:1px solid rgba(255,255,255,.48);background:#ffffff14}.brand-mark span{font-family:var(--display);font-size:25px}.brand-line{display:flex;align-items:baseline;gap:12px}.app-header h1{font-family:var(--display);font-size:25px;font-weight:700;letter-spacing:.12em}.brand-edition,.section-kicker,.query-label,.msg-label{font-family:var(--utility);letter-spacing:.12em}.brand-edition{color:#ffffff94;font-size:14px}.subtitle{margin-top:3px;color:#ffffffad;font-size:14px}.status{display:flex;align-items:center;gap:9px;white-space:nowrap;color:#ffffffc7;font-size:14px}.status-dot{width:8px;height:8px;border:2px solid rgba(255,255,255,.45);background:#8fc5a6;box-shadow:0 0 0 3px #8fc5a621}.status-error{color:#ffd5ce}.status-error .status-dot{background:#e48778}.app-body{display:flex;flex:1;min-height:0}.section-kicker{margin-bottom:7px;color:var(--index-orange);font-size:14px;font-weight:700}.panel{display:flex;width:380px;flex-shrink:0;flex-direction:column;gap:18px;overflow-y:auto;border-right:1px solid #cbd3d0;background:var(--mist-light);padding:28px 24px}.panel-heading,.chat-header{display:flex;align-items:flex-end;justify-content:space-between;gap:16px}.panel h2,.chat h2{font-family:var(--display);font-size:24px;line-height:1;letter-spacing:.06em}.library-count{display:flex;align-items:baseline;gap:5px;color:var(--archive-blue)}.library-count strong{font-family:var(--utility);font-size:21px;font-weight:500}.library-count span{color:var(--muted);font-size:14px}.panel-intro{color:var(--muted);font-size:14px;line-height:1.7}.panel-actions{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid #bfc9c6;border-left:1px solid #bfc9c6}.panel-actions button{min-height:42px;border:0;border-right:1px solid #bfc9c6;border-bottom:1px solid #bfc9c6;background:transparent;color:var(--archive-blue);cursor:pointer;font-size:14px;transition:background .14s ease,color .14s ease}.panel-actions .action-primary{grid-column:1 / -1;background:var(--archive-blue);color:#fff;font-weight:600}.panel-actions button:hover:not(:disabled){background:var(--paper-raised)}.panel-actions 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#bfc9c6;padding-bottom:7px;color:var(--muted);font-family:var(--utility);font-size:14px}.doc-list{display:flex;list-style:none;flex-direction:column}.doc-empty{display:flex;flex-direction:column;gap:5px;border-bottom:1px solid #ccd4d2;padding:17px 0;color:var(--graphite);font-size:14px}.doc-empty small{color:var(--muted);font-size:14px}.doc-item{display:grid;grid-template-columns:26px minmax(0,1fr) auto;align-items:center;gap:9px;border-bottom:1px solid #ccd4d2;padding:13px 0}.doc-index,.source-index{color:var(--index-orange);font-family:var(--utility);font-size:14px}.doc-main{display:flex;min-width:0;flex-direction:column;gap:4px}.doc-name{overflow:hidden;color:var(--graphite);font-size:14px;font-weight:600;text-overflow:ellipsis;white-space:nowrap}.doc-chunks{color:var(--muted);font-size:14px}.doc-del{border:0;border-bottom:1px solid transparent;background:transparent;padding:3px 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input{min-width:0;flex:1;border:0;background:transparent;padding:17px 18px;color:var(--graphite);font-size:14px;outline:none}.chat-input input::placeholder{color:#909a9d}.chat-input button{display:flex;min-width:124px;align-items:center;justify-content:center;gap:12px;border:0;background:var(--archive-blue);padding:0 20px;color:#fff;cursor:pointer;font-size:14px;font-weight:600;transition:background .14s ease}.chat-input button:hover:not(:disabled){background:var(--archive-blue-deep)}@media (max-width: 820px){body{overflow:auto}.app{min-height:100%;height:auto}.app-header{min-height:76px;padding:13px 18px}.brand-mark{width:42px;height:42px}.brand-edition,.subtitle{display:none}.app-body{flex-direction:column}.panel{width:100%;max-height:44vh;border-right:0;border-bottom:1px solid #cbd3d0;padding:22px 20px}.chat{min-height:620px}.chat-header{min-height:78px;padding:20px}.chat-method{display:none}.chat-messages{min-height:410px;padding:28px 20px 40px}.chat-empty{padding-left:45px}.msg,.msg-user{width:100%;grid-template-columns:34px minmax(0,1fr);gap:12px}.msg-role{width:34px;height:34px}.msg-assistant:before{top:34px;left:16px}.chat-input{position:sticky;bottom:12px;margin:0 20px 20px}.query-label{display:none}.chat-input button{min-width:104px}}@media (max-width: 480px){.status span:last-child{display:none}.brand-line h1{font-size:22px}.panel{max-height:52vh}.chat-empty{border-left:0;padding:50px 0 0}.empty-index{top:0;left:0}.chat-input{box-shadow:4px 4px #173f5f17}.chat-input input{padding:15px 13px}.chat-input button{min-width:82px;padding:0 12px}.chat-input button span{display:none}}@media (prefers-reduced-motion: reduce){*,*:before,*:after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}.gate{display:grid;height:100%;place-items:center;padding:24px;background:var(--paper)}.gate-card{display:flex;width:min(380px,100%);flex-direction:column;align-items:stretch;gap:12px;border:1px solid #c4cdca;background:var(--paper-raised);padding:34px 30px 30px;box-shadow:6px 6px #173f5f14}.gate-mark{width:52px;height:52px;align-self:center;border-color:var(--archive-blue);background:#173f5f0f;color:var(--archive-blue)}.gate-title{align-self:center;color:var(--archive-blue);font-family:var(--display);font-size:26px;font-weight:700;letter-spacing:.16em}.gate-hint{margin-bottom:6px;color:var(--muted);font-size:14px;text-align:center}.gate-input{width:100%;border:1px solid #bdc7c4;border-bottom:2px solid var(--archive-blue);background:var(--paper);padding:12px;color:var(--graphite);font-size:15px;letter-spacing:.08em;outline:none}.gate-input:focus{border-color:var(--archive-blue)}.gate-error{color:var(--error);font-size:13px;line-height:1.5;text-align:center}.gate-submit{margin-top:6px;border:0;background:var(--archive-blue);padding:12px;color:#fff;cursor:pointer;font-size:15px;font-weight:600;letter-spacing:.1em;transition:background .14s ease}.gate-submit:hover:not(:disabled){background:var(--archive-blue-deep)}