@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@500;600;700;900&family=ZCOOL+XiaoWei&display=swap');
:root{--ink:#18221f;--deep:#17231f;--jade:#486b5e;--paper:#f4f0e7;--paper2:#ebe5d8;--gold:#a88346;--line:rgba(24,34,31,.14);--muted:#707871}
*{box-sizing:border-box}html,body{margin:0;height:100%;color:var(--ink);font-family:"Noto Serif SC",serif;background:var(--paper)}
button,input,textarea{font:inherit}.hidden{display:none!important}.grain{position:fixed;inset:0;pointer-events:none;opacity:.22;z-index:20;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.08'/%3E%3C/svg%3E")}
.login-shell{min-height:100%;display:grid;place-items:center;padding:24px;background:radial-gradient(circle at 70% 20%,#315044 0,transparent 38%),linear-gradient(145deg,#111b18,#1c2c26 72%,#0d1714);position:relative;overflow:hidden}
.login-shell:before{content:"";position:absolute;width:54vw;height:54vw;border:1px solid rgba(244,240,231,.08);border-radius:50%;left:-20vw;bottom:-32vw;box-shadow:0 0 0 8vw rgba(244,240,231,.018),0 0 0 17vw rgba(244,240,231,.012)}
.seal{position:absolute;right:8%;top:8%;font:900 clamp(120px,22vw,340px)/1 "ZCOOL XiaoWei";color:rgba(244,240,231,.035);transform:rotate(7deg)}
.login-card{width:min(570px,100%);padding:54px;border:1px solid rgba(255,255,255,.16);background:rgba(244,240,231,.97);box-shadow:0 32px 90px #08100db8;position:relative}
.login-card:before{content:"";position:absolute;inset:10px;border:1px solid rgba(168,131,70,.25);pointer-events:none}.eyebrow{letter-spacing:.22em;text-transform:uppercase;font-size:11px;color:var(--gold);font-weight:700}
h1{font-family:"ZCOOL XiaoWei";font-size:48px;margin:12px 0 14px;letter-spacing:.08em}.lede{line-height:1.9;color:#5f6862;margin-bottom:34px}
label{display:block;font-size:13px;margin-bottom:9px}.login-row{display:flex}.login-row input{min-width:0;flex:1 1 0;width:0;border:1px solid #b9b5a9;background:#fffaf0;padding:14px;outline:none}.login-row input:focus{border-color:var(--jade)}
.login-row button,.new-chat,#send{border:0;background:var(--deep);color:#fff;padding:0 24px;cursor:pointer}.error{color:#9d3d32;font-size:12px;min-height:18px}.principles{display:flex;align-items:center;gap:12px;margin-top:22px;color:#66716b;font-size:12px}.principles i{height:1px;flex:1;background:#c9c3b7}
.app-shell{height:100%;display:grid;grid-template-columns:292px 1fr;background:var(--paper)}aside{background:var(--deep);color:#eae5da;padding:24px 18px;display:flex;flex-direction:column;min-width:0}
.brand{display:flex;gap:12px;align-items:center;padding:2px 6px 24px}.brand strong{display:block;font-size:17px}.brand small{display:block;color:#98a49f;margin-top:4px;font-size:11px}.mini-seal{width:38px;height:38px;border:1px solid #bd9b63;color:#d0ae75;display:grid;place-items:center;font-family:"ZCOOL XiaoWei";font-size:23px;transform:rotate(-2deg)}
.new-chat{background:#f0eadf;color:var(--deep);padding:13px;width:100%;text-align:left;margin-bottom:18px}nav{overflow:auto;flex:1}.conversation-row{display:grid;grid-template-columns:minmax(0,1fr) 32px;align-items:stretch}.conversation{display:block;width:100%;border:0;border-left:2px solid transparent;background:transparent;color:#b7c0bc;text-align:left;padding:12px 11px;cursor:pointer;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:13px}.conversation.active{background:#22342d;color:white;border-left-color:#bd9b63}.delete-conversation{border:0;background:transparent;color:#6f7c75;cursor:pointer;font-size:17px;opacity:0;transition:.2s}.conversation-row:hover .delete-conversation,.delete-conversation:focus-visible{opacity:1;color:#d7b3a5}.delete-conversation:hover{background:#382b27;color:#fff}
.aside-foot{border-top:1px solid rgba(255,255,255,.1);padding-top:16px;color:#89968f;font-size:10px}.aside-foot div{margin-bottom:10px}.aside-foot button{border:0;background:none;color:#aab4af;cursor:pointer;padding:2px 10px 2px 0}.aside-foot button:hover{color:#fff}.status-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:#7baa8a;margin-right:5px}
.workbench{min-width:0;min-height:0;overflow:hidden;display:grid;grid-template-rows:74px minmax(0,1fr) auto;height:100%;background:linear-gradient(90deg,rgba(168,131,70,.035) 1px,transparent 1px),var(--paper);background-size:42px 42px}
header{display:flex;align-items:center;padding:0 38px;border-bottom:1px solid var(--line);background:rgba(244,240,231,.88);backdrop-filter:blur(10px)}header p{font-size:10px;color:var(--gold);letter-spacing:.2em;margin:0}header h2{font-size:18px;margin:3px 0}.mode{font-size:11px;color:#68716c}.mode span{display:inline-block;width:6px;height:6px;border-radius:50%;background:#608d76;margin-right:6px}.menu{display:none}
.materials-trigger{margin-left:auto;margin-right:18px;border:1px solid var(--line);background:#f8f3e8;color:var(--ink);padding:8px 11px;cursor:pointer;font-size:11px}.materials-trigger b{display:inline-grid;place-items:center;min-width:19px;height:19px;margin-left:7px;border-radius:50%;background:var(--deep);color:#fff;font-size:9px}
.messages{min-height:0;overflow:auto;padding:38px max(34px,calc((100% - 820px)/2));scroll-behavior:smooth}.welcome{padding:7vh 0 0;max-width:690px}.welcome h3{font-family:"ZCOOL XiaoWei";font-size:38px;margin:10px 0}.welcome>p:not(.eyebrow){line-height:1.9;color:#626c66;max-width:620px}.prompts{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:30px}.prompts button{background:rgba(255,255,255,.42);border:1px solid var(--line);padding:15px;text-align:left;color:#4b5650;cursor:pointer}.prompts button:hover{border-color:var(--gold);background:#fffaf0}
.message{margin:0 0 28px;animation:rise .35s ease}.message.user{margin-left:18%;background:#e4ded1;padding:17px 20px;border-left:2px solid var(--gold);line-height:1.75}.message.assistant{padding:0 4px;line-height:1.9}.message .role{font-size:10px;color:var(--gold);letter-spacing:.18em;margin-bottom:8px}.message-content{white-space:normal}.message-content p{margin:.5em 0}.message-content h3{font-size:20px;margin:1.8em 0 .7em;padding-bottom:.5em;border-bottom:1px solid var(--line)}.message-content h4{font-size:16px;margin:1.4em 0 .5em}.message-content hr{border:0;border-top:1px solid var(--line);margin:24px 0}.message-content .bullet{padding-left:1.25em;position:relative;margin:.45em 0}.message-content .bullet:before{content:"—";position:absolute;left:0;color:var(--gold)}.message-content .numbered{padding-left:.15em;margin:.45em 0}.message-content blockquote{margin:1em 0;padding:10px 15px;border-left:2px solid var(--gold);background:#ece6da;color:#4e5a54}.message-content code{background:#e9e3d8;padding:.1em .3em;border-radius:2px}.message-content .spacer{height:.55em}.table-scroll{overflow-x:auto;margin:16px 0}.message-content table{width:100%;border-collapse:collapse;font-size:.9em}.message-content th,.message-content td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}.message-content th{background:#e9e2d5}.cursor:after{content:"";display:inline-block;width:7px;height:16px;background:var(--gold);margin-left:3px;animation:blink 1s infinite;vertical-align:-2px}
.citations{display:flex;flex-wrap:wrap;gap:7px;margin-top:18px}.citation,.copy-answer{border:1px solid var(--line);background:#f8f4eb;color:#5e6963;padding:6px 9px;font-size:10px;cursor:pointer}.inline-kb{border:0;border-bottom:1px solid var(--gold);background:transparent;color:var(--jade);padding:0 2px;cursor:pointer;font-size:.82em}
.composer-wrap{padding:12px max(34px,calc((100% - 820px)/2)) 18px;background:linear-gradient(transparent,rgba(244,240,231,.96) 20%)}#composer{background:#fffdf7;border:1px solid #c8c1b3;box-shadow:0 12px 36px rgba(44,52,48,.11);padding:14px}textarea{display:block;width:100%;resize:none;max-height:180px;min-height:48px;border:0;background:transparent;outline:0;line-height:1.7;color:var(--ink)}.composer-foot{border-top:1px solid var(--line);padding-top:10px;display:flex;align-items:center;gap:10px}.composer-foot span{font-size:9px;color:#818983}.composer-foot #send{margin-left:auto;padding:10px 16px}.composer-foot button:disabled{opacity:.5}.attach-button{border:0;background:#ebe4d7;color:#40564d;padding:8px 11px!important;cursor:pointer}.disclaimer{text-align:center;color:#91958f;font-size:9px;margin:9px 0 0}
.focus-chips{display:flex;gap:7px;overflow-x:auto;scrollbar-width:none}.focus-chips:not(:empty){padding-bottom:10px;border-bottom:1px solid var(--line);margin-bottom:7px}.focus-chip{flex:none;border:1px solid rgba(168,131,70,.42);background:#f4ead6;color:#4c534f;padding:6px 9px;font-size:10px;cursor:pointer}.focus-chip:before{content:"重点 · ";color:var(--gold)}.upload-status{font-size:10px;color:var(--jade);min-height:0}.upload-status:not(:empty){padding:6px 0}
.drawer-backdrop{position:fixed;inset:0;z-index:38;border:0;background:rgba(13,23,20,.45);backdrop-filter:blur(2px)}.material-drawer{position:fixed;z-index:40;inset:0 0 0 auto;width:min(410px,92vw);background:#f6f1e7;border-left:1px solid rgba(168,131,70,.4);box-shadow:-24px 0 70px #0c161255;transform:translateX(105%);transition:transform .28s ease;padding:28px;overflow:auto}.material-drawer.open{transform:none}.drawer-head{display:flex;gap:18px;align-items:flex-start;border-bottom:1px solid var(--line);padding-bottom:19px}.drawer-head h3{margin:7px 0;font-size:22px}.drawer-head small{color:var(--muted);line-height:1.6}.drawer-close{margin-left:auto;border:0;background:none;font-size:27px;cursor:pointer;color:var(--ink)}.drawer-upload{width:100%;margin:18px 0;border:1px dashed var(--gold);background:#fffaf0;color:var(--jade);padding:13px;cursor:pointer}.attachment-list{display:grid;gap:10px}.attachment-card{display:grid;grid-template-columns:48px 1fr auto;gap:11px;align-items:center;padding:12px;border:1px solid var(--line);background:#fffaf2}.attachment-thumb{width:48px;height:48px;object-fit:cover;background:#e6dfd3;display:grid;place-items:center;color:var(--gold);font-size:10px;overflow:hidden}.attachment-thumb img{width:100%;height:100%;object-fit:cover}.attachment-info{min-width:0}.attachment-name{font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.attachment-meta{font-size:9px;color:var(--muted);margin-top:5px}.attachment-actions{display:grid;gap:5px}.attachment-actions button{border:0;background:none;color:var(--jade);font-size:10px;cursor:pointer;padding:3px}.attachment-actions .delete-material{color:#9d5147}.focus-toggle{grid-column:1/-1;border:0;background:#ece5d9;color:#56625c;padding:8px;cursor:pointer;font-size:10px}.focus-toggle.selected{background:var(--deep);color:#fff}.empty-materials{text-align:center;color:var(--muted);font-size:11px;line-height:1.8;padding:32px 12px}.message-focus{margin-top:9px;font-size:10px;color:#6d756f}.message-focus span{display:inline-block;border:1px solid rgba(168,131,70,.35);padding:4px 7px;margin:3px 4px 0 0;background:#f0e8da}
dialog{border:0;width:min(620px,calc(100% - 32px));padding:34px;background:#faf6ed;color:var(--ink);box-shadow:0 30px 100px #0008}dialog::backdrop{background:#101815bb}.close{float:right;border:0;background:none;font-size:27px;cursor:pointer}dialog h3{margin:8px 0}dialog small{color:var(--muted)}#citationBody{margin-top:24px;line-height:1.9;white-space:pre-wrap;border-top:1px solid var(--line);padding-top:18px}
.password-form{margin-top:24px}.password-form label{margin-top:14px}.password-form input{width:100%;border:1px solid #b9b5a9;background:#fffaf0;padding:12px;outline:none}.password-form input:focus{border-color:var(--jade)}.password-form>button{border:0;background:var(--deep);color:#fff;padding:12px 22px;cursor:pointer}.success{color:#47725e;font-size:12px;min-height:18px}
@keyframes rise{from{opacity:0;transform:translateY(8px)}}@keyframes blink{50%{opacity:0}}
@media(max-width:760px){.login-card{padding:38px 26px}h1{font-size:38px}.app-shell{grid-template-columns:1fr}aside{position:fixed;z-index:30;inset:0 18% 0 0;transform:translateX(-105%);transition:.25s;box-shadow:20px 0 50px #0006}aside.open{transform:none}.delete-conversation{opacity:1;min-width:44px}.conversation-row{grid-template-columns:minmax(0,1fr) 44px}.workbench{grid-template-rows:64px minmax(0,1fr) auto}header{padding:0 12px}.menu{display:block;border:0;background:none;font-size:20px;margin-right:9px}.materials-trigger{margin-left:auto;margin-right:10px;padding:7px 8px}.materials-trigger span{display:none}.mode{font-size:0}.mode span{margin:0}.messages{padding:22px 17px}.welcome{padding-top:3vh}.welcome h3{font-size:30px}.prompts{grid-template-columns:1fr}.message.user{margin-left:8%;padding:14px}.composer-wrap{padding:8px 10px calc(10px + env(safe-area-inset-bottom))}.composer-foot span{display:none}#send{padding:10px 12px}.disclaimer{display:none}.material-drawer{inset:auto 0 0 0;width:100%;height:min(75vh,720px);border-left:0;border-top:1px solid rgba(168,131,70,.4);transform:translateY(105%);padding:22px 17px calc(22px + env(safe-area-inset-bottom));border-radius:18px 18px 0 0}.material-drawer.open{transform:none}.drawer-close,.drawer-upload,.focus-toggle{min-height:44px}.attachment-actions button{min-height:34px}.focus-chips{margin-left:-4px;margin-right:-4px}}