*{box-sizing:border-box;margin:0;padding:0}
:root{
 --bg:#0f1418; --bg2:#161d24; --bg3:#1e2731; --line:#2a3542;
 --fg:#e6edf3; --fg2:#9aa8b6; --fg3:#5f6c7a;
 --mint:#4ade80; --mint-d:#22c55e; --mint-dim:rgba(74,222,128,.12);
 --user:#2a3a4a; --danger:#f87171; --warn:#fbbf24;
 --r:14px; --r2:10px;
}
@media (prefers-color-scheme: light){
 :root{--bg:#f5f7f9;--bg2:#fff;--bg3:#eef2f5;--line:#dde4ea;--fg:#1a2530;--fg2:#5a6875;--fg3:#93a1ae;--user:#e3ecf4}
}
html,body{height:100%}
body{
 background:var(--bg); color:var(--fg);
 font:15px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
 -webkit-font-smoothing:antialiased; overflow:hidden;
}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
input,textarea,select{font:inherit;color:inherit;background:var(--bg3);border:1px solid var(--line);border-radius:var(--r2);padding:9px 12px;outline:none;width:100%}
input:focus,textarea:focus,select:focus{border-color:var(--mint-d);box-shadow:0 0 0 3px var(--mint-dim)}
textarea{resize:none;line-height:1.6}
.hidden{display:none!important}

/* ========= 登录 ========= */
#login{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background:radial-gradient(1200px 600px at 50% -10%,rgba(74,222,128,.10),transparent 60%),var(--bg);z-index:100}
.login-box{width:min(380px,90vw);background:var(--bg2);border:1px solid var(--line);border-radius:20px;padding:34px 28px;box-shadow:0 24px 64px rgba(0,0,0,.35)}
.login-logo{display:flex;align-items:center;gap:11px;margin-bottom:6px}
.login-logo .leaf{width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,var(--mint),var(--mint-d));display:flex;align-items:center;justify-content:center;font-size:20px}
.login-logo h1{font-size:20px;font-weight:650;letter-spacing:.5px}
.login-sub{color:var(--fg2);font-size:13px;margin:0 0 22px 49px}
.login-box input{margin-bottom:12px;height:44px}
.login-btn{width:100%;height:44px;border-radius:var(--r2);background:linear-gradient(135deg,var(--mint),var(--mint-d));color:#06210f;font-weight:650;font-size:15px;transition:.15s}
.login-btn:hover{filter:brightness(1.08)}
.login-btn:disabled{opacity:.55;cursor:not-allowed}
.login-err{color:var(--danger);font-size:13px;min-height:20px;margin-top:10px;text-align:center}

/* ========= 主布局 ========= */
#app{display:flex;height:100%;height:100dvh}
.side{width:264px;flex:0 0 264px;background:var(--bg2);border-right:1px solid var(--line);display:flex;flex-direction:column;transition:margin-left .25s}
.side-head{padding:16px 16px 12px;display:flex;align-items:center;gap:10px;border-bottom:1px solid var(--line)}
.side-head .leaf{width:32px;height:32px;border-radius:10px;background:linear-gradient(135deg,var(--mint),var(--mint-d));display:flex;align-items:center;justify-content:center;font-size:17px;flex:0 0 auto}
.side-head .nm{font-weight:650;font-size:15px}
.side-head .st{font-size:11px;color:var(--fg3)}
.side-body{flex:1;overflow-y:auto;padding:14px 16px 18px}
.side-body::-webkit-scrollbar{width:6px}
.side-body::-webkit-scrollbar-thumb{background:var(--line);border-radius:3px}
.sec{margin-bottom:20px}
.sec-t{font-size:11px;font-weight:650;letter-spacing:.9px;color:var(--fg3);text-transform:uppercase;margin-bottom:10px;display:flex;align-items:center;justify-content:space-between}
.sec-t button{font-size:11px;color:var(--mint);text-transform:none;letter-spacing:0;font-weight:600}

/* 好感度 */
.favor-card{background:var(--bg3);border-radius:var(--r);padding:13px 14px}
.favor-row{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:9px}
.favor-lv{font-size:16px;font-weight:650;color:var(--mint)}
.favor-num{font-size:12px;color:var(--fg2);font-variant-numeric:tabular-nums}
.bar{height:7px;border-radius:4px;background:var(--line);overflow:hidden;position:relative}
.bar>i{display:block;height:100%;border-radius:4px;background:linear-gradient(90deg,var(--mint-d),var(--mint));transition:width .5s cubic-bezier(.4,0,.2,1);width:50%}
.bar-tip{display:flex;justify-content:space-between;font-size:10px;color:var(--fg3);margin-top:5px}

/* 记忆 */
.mem{display:flex;gap:8px;padding:8px 9px;border-radius:var(--r2);margin-bottom:6px;background:var(--bg3);font-size:12.5px;line-height:1.5;align-items:flex-start}
.mem.core{border-left:2px solid var(--mint-d)}
.mem.auto{border-left:2px solid var(--fg3)}
.mem p{flex:1;color:var(--fg2);word-break:break-word}
.mem button{color:var(--fg3);font-size:15px;line-height:1;opacity:0;transition:.15s}
.mem:hover button{opacity:1}
.mem button:hover{color:var(--danger)}
.empty{color:var(--fg3);font-size:12px;text-align:center;padding:10px 0}

.side-foot{border-top:1px solid var(--line);padding:10px 12px;display:flex;gap:6px}
.icon-btn{width:34px;height:34px;border-radius:9px;display:flex;align-items:center;justify-content:center;color:var(--fg2);transition:.15s;flex:0 0 auto}
.icon-btn:hover{background:var(--bg3);color:var(--mint)}
.icon-btn svg{width:17px;height:17px}

/* ========= 聊天区 ========= */
.main{flex:1;display:flex;flex-direction:column;min-width:0;background:var(--bg)}
.top{height:52px;flex:0 0 52px;border-bottom:1px solid var(--line);display:flex;align-items:center;padding:0 14px;gap:8px;background:var(--bg2)}
.top .ttl{font-weight:600;font-size:14.5px;flex:1;display:flex;align-items:center;gap:8px}
.dot{width:7px;height:7px;border-radius:50%;background:var(--fg3)}
.dot.on{background:var(--mint);box-shadow:0 0 0 3px var(--mint-dim)}
.menu-btn{display:none}

.msgs{flex:1;overflow-y:auto;overflow-x:hidden;padding:22px 0 8px;scroll-behavior:smooth}
.msgs::-webkit-scrollbar{width:8px}
.msgs::-webkit-scrollbar-thumb{background:var(--line);border-radius:4px}
.wrap{max-width:760px;margin:0 auto;padding:0 18px}

.msg{display:flex;gap:11px;margin-bottom:20px;animation:fade .25s ease}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.msg.me{flex-direction:row-reverse}
.avatar{width:32px;height:32px;border-radius:10px;flex:0 0 auto;display:flex;align-items:center;justify-content:center;font-size:15px}
.msg.her .avatar{background:linear-gradient(135deg,var(--mint),var(--mint-d))}
.msg.me .avatar{background:var(--bg3);color:var(--fg2)}
.bubble-wrap{max-width:min(640px,78%);min-width:0}
.bubble{padding:10px 14px;border-radius:var(--r);font-size:14.5px;line-height:1.72;word-break:break-word;white-space:pre-wrap;overflow-wrap:anywhere}
.msg.her .bubble{background:var(--bg2);border:1px solid var(--line);border-top-left-radius:4px}
.msg.me .bubble{background:var(--user);border-top-right-radius:4px}
.bubble.typing::after{content:'▍';animation:blink 1s steps(2) infinite;color:var(--mint)}
@keyframes blink{50%{opacity:0}}
.msg-meta{font-size:11px;color:var(--fg3);margin-top:5px;padding:0 3px;display:flex;gap:9px;align-items:center}
.msg.me .msg-meta{justify-content:flex-end}
.msg-meta button{font-size:11px;color:var(--fg3);opacity:0;transition:.15s}
.msg:hover .msg-meta button{opacity:1}
.msg-meta button:hover{color:var(--danger)}

/* 思考区 */
.think{margin-bottom:9px;border:1px solid var(--line);border-radius:var(--r2);overflow:hidden;background:var(--bg3)}
.think-h{display:flex;align-items:center;gap:7px;padding:7px 11px;font-size:11.5px;color:var(--fg2);cursor:pointer;user-select:none}
.think-h svg{width:12px;height:12px;transition:transform .2s}
.think.open .think-h svg{transform:rotate(90deg)}
.think-h .lb{flex:1}
.think-b{display:none;padding:0 12px 11px;font-size:12.5px;color:var(--fg2);line-height:1.7;white-space:pre-wrap;max-height:300px;overflow-y:auto;border-top:1px solid var(--line);padding-top:9px;margin-top:1px}
.think.open .think-b{display:block}

/* 输入 */
.composer{flex:0 0 auto;padding:10px 18px 16px;background:linear-gradient(to top,var(--bg) 70%,transparent)}
.composer-in{max-width:760px;margin:0 auto;background:var(--bg2);border:1px solid var(--line);border-radius:18px;padding:9px 9px 9px 16px;display:flex;gap:9px;align-items:flex-end;transition:.15s}
.composer-in:focus-within{border-color:var(--mint-d);box-shadow:0 0 0 3px var(--mint-dim)}
.composer textarea{border:none;background:none;padding:5px 0;max-height:180px;min-height:26px;font-size:14.5px;line-height:1.6}
.composer textarea:focus{box-shadow:none}
.send-btn{width:36px;height:36px;border-radius:11px;background:linear-gradient(135deg,var(--mint),var(--mint-d));color:#06210f;display:flex;align-items:center;justify-content:center;flex:0 0 auto;transition:.15s}
.send-btn:hover{filter:brightness(1.08)}
.send-btn:disabled{opacity:.35;cursor:not-allowed;filter:none}
.send-btn svg{width:17px;height:17px}
.send-btn.stop{background:var(--danger);color:#fff}
.composer-tip{max-width:760px;margin:7px auto 0;font-size:11px;color:var(--fg3);text-align:center}

/* ========= 弹层 ========= */
.mask{position:fixed;inset:0;background:rgba(0,0,0,.55);backdrop-filter:blur(2px);z-index:200;display:flex;align-items:center;justify-content:center;padding:20px;animation:fade .18s}
.panel{background:var(--bg2);border:1px solid var(--line);border-radius:18px;width:min(520px,100%);max-height:86vh;display:flex;flex-direction:column;box-shadow:0 24px 64px rgba(0,0,0,.45);animation:pop .2s}
@keyframes pop{from{transform:scale(.96);opacity:0}to{transform:none;opacity:1}}
.panel-h{display:flex;align-items:center;padding:16px 20px;border-bottom:1px solid var(--line);font-weight:650;font-size:15px}
.panel-h .x{margin-left:auto;color:var(--fg2);font-size:20px;line-height:1;padding:2px 6px;border-radius:6px}
.panel-h .x:hover{background:var(--bg3)}
.panel-b{flex:1;overflow-y:auto;padding:18px 20px}
.panel-f{padding:13px 20px;border-top:1px solid var(--line);display:flex;gap:9px;justify-content:flex-end}
.btn{padding:8px 17px;border-radius:var(--r2);font-size:13.5px;font-weight:600;transition:.15s;border:1px solid var(--line)}
.btn:hover{background:var(--bg3)}
.btn.pri{background:linear-gradient(135deg,var(--mint),var(--mint-d));color:#06210f;border-color:transparent}
.btn.pri:hover{filter:brightness(1.08)}
.btn.dgr{color:var(--danger);border-color:rgba(248,113,113,.35)}
.btn.dgr:hover{background:rgba(248,113,113,.12)}

.field{margin-bottom:16px}
.field>label{display:block;font-size:12.5px;color:var(--fg2);margin-bottom:6px;font-weight:600}
.field .hint{font-size:11px;color:var(--fg3);margin-top:5px;line-height:1.5}
.switch{display:flex;align-items:center;justify-content:space-between;padding:10px 0;border-bottom:1px solid var(--line)}
.switch:last-child{border-bottom:none}
.switch span{font-size:13.5px}
.tg{width:42px;height:24px;border-radius:12px;background:var(--line);position:relative;transition:.2s;flex:0 0 auto}
.tg::after{content:'';position:absolute;top:3px;left:3px;width:18px;height:18px;border-radius:50%;background:#fff;transition:.2s}
.tg.on{background:var(--mint-d)}
.tg.on::after{transform:translateX(18px)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}

/* 用量 */
.stat{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:16px}
.stat-i{background:var(--bg3);border-radius:var(--r2);padding:12px 13px}
.stat-i .k{font-size:11px;color:var(--fg3);margin-bottom:3px}
.stat-i .v{font-size:17px;font-weight:650;font-variant-numeric:tabular-nums}
.stat-i .v.sm{font-size:14px}
.usage-note{font-size:11px;color:var(--fg3);line-height:1.6;background:var(--bg3);border-radius:var(--r2);padding:10px 12px}

.toast{position:fixed;left:50%;bottom:34px;transform:translateX(-50%) translateY(20px);background:var(--bg3);border:1px solid var(--line);color:var(--fg);padding:10px 18px;border-radius:12px;font-size:13px;z-index:400;opacity:0;pointer-events:none;transition:.25s;box-shadow:0 10px 30px rgba(0,0,0,.3);max-width:80vw;text-align:center}
.toast.on{opacity:1;transform:translateX(-50%) translateY(0)}
.toast.err{border-color:rgba(248,113,113,.5);color:#fca5a5}

/* 移动端 */
@media (max-width:820px){
 .side{position:fixed;left:0;top:0;bottom:0;z-index:150;margin-left:-264px;box-shadow:8px 0 32px rgba(0,0,0,.4)}
 .side.open{margin-left:0}
 .menu-btn{display:flex}
 .bubble-wrap{max-width:86%}
 .composer{padding:8px 10px 12px}
 .wrap{padding:0 12px}
 .msgs{padding-top:14px}
 .mask{padding:0;align-items:flex-end}
 .panel{border-radius:18px 18px 0 0;max-height:92vh;width:100%}
}