:root{
  --bg:#0c0909; --bg2:#141010; --card:#1a1414; --card2:#211a1a; --line:#332727;
  --txt:#ece4d8; --dim:#a89a8a; --red:#B31B1B; --red2:#8f1515; --gold:#D6A756;
  --green:#22C55E; --blue:#3B82F6; --amber:#B45309; --purple:#8b5cf6;
}
*{box-sizing:border-box; -webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0;height:100%}
body{
  background:
    radial-gradient(1200px 800px at 75% -10%, rgba(179,27,27,.16) 0%, transparent 60%),
    radial-gradient(900px 600px at -10% 110%, rgba(90,40,25,.14) 0%, transparent 55%),
    var(--bg);
  color:var(--txt);
  font-family:'Noto Sans SC',-apple-system,'PingFang SC','Microsoft YaHei',sans-serif;
  font-size:15px; line-height:1.7;
}
h1,h2,h3,.serif{font-family:'Noto Serif SC',serif}
#app{display:flex;flex-direction:column;height:100dvh;max-width:820px;margin:0 auto}

/* ===== 顶栏 ===== */
#topbar{
  display:flex;align-items:center;justify-content:space-between;
  padding:10px 14px calc(10px + env(safe-area-inset-top));
  background:rgba(12,9,9,.86); backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line); z-index:20; flex:0 0 auto;
}
.brand{display:flex;align-items:center;gap:9px}
.brand-mark{
  width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center;
  background:#1A0B0B;border:1.5px solid var(--red);color:#fff;
  font-family:'Noto Serif SC',serif;font-weight:900;font-size:19px;text-shadow:0 0 8px rgba(179,27,27,.7);
}
.brand-name{font-family:'Noto Serif SC',serif;font-weight:700;font-size:16px;letter-spacing:1px}
.top-actions{display:flex;gap:6px}
.icon-btn{
  width:36px;height:36px;border-radius:9px;border:1px solid #3a2c2c;background:var(--card2);
  color:var(--txt);font-size:15px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;
}
.icon-btn:active{transform:scale(.94)}

/* ===== 聊天区 ===== */
#chat{flex:1 1 auto;overflow-y:auto;padding:16px 14px 10px;scroll-behavior:smooth}
.msg{margin-bottom:14px;position:relative}
.msg.user{display:flex;justify-content:flex-end}
.user-bubble{
  background:linear-gradient(135deg,var(--red2),#5d0c0c);color:#fff;
  padding:10px 14px;border-radius:14px 14px 4px 14px;max-width:86%;white-space:pre-wrap;word-break:break-word;
  box-shadow:0 2px 10px rgba(0,0,0,.35);
}
.para{margin:0 0 10px;word-break:break-word}
.para:last-child{margin-bottom:0}
.sys-divider{text-align:center;color:var(--dim);font-size:12px;margin:16px 0;letter-spacing:3px}
.sys-divider::before,.sys-divider::after{content:'—— ';color:#4a3a33}
.sys-divider::after{content:' ——'}

/* 卡片 */
.card{border-radius:12px;padding:12px 14px;margin:0 0 12px;border-left:3px solid transparent;word-break:break-word}
.card:last-child{margin-bottom:0}
.card-gain{border-left-color:#166534;background:rgba(22,101,52,.16)}
.card-info{border-left-color:#1D4ED8;background:rgba(29,78,216,.14)}
.card-suspect{border-left-color:#B45309;background:rgba(180,83,9,.15)}
.card-danger{border-left-color:#B91C1C;background:rgba(185,28,28,.17)}
.card-identity{border-left-color:#6D28D9;background:rgba(109,40,217,.14)}
.card-worldline{border:1px solid rgba(214,167,86,.55);border-left:3px solid var(--gold);
  background:linear-gradient(180deg,rgba(70,50,22,.28),rgba(20,14,8,.45))}
.hud{background:linear-gradient(180deg,#1e1512,#131010);border:1px solid #3a2b22;border-left:3px solid var(--gold);
  border-radius:12px;padding:12px 14px;margin-bottom:12px;word-break:break-word}
.hud:last-child{margin-bottom:0}

/* LaTeX 转出的徽章 */
.cb,.fcb{display:inline-block;padding:5px 12px;border-radius:8px;font-weight:700;color:#fff;margin:3px 0;font-size:15px}
.fcb{border:2px solid}
.lg{font-size:1.3em}
.hg{font-size:1.5em}
.sm{font-size:.85em}
.tc{font-weight:600}
code{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;background:rgba(255,255,255,.09);padding:1px 6px;border-radius:5px;font-size:.92em}
a{color:#7aa2ff}
strong{font-weight:700}

/* 光标动画 */
.cursor{display:inline-block;animation:blink 1s steps(1) infinite;color:var(--gold);font-weight:700}
@keyframes blink{50%{opacity:0}}
.reasoning{margin:6px 0 10px;font-size:.85em;color:var(--dim);border:1px dashed #4a3535;border-radius:8px;padding:6px 10px}
.reasoning summary{cursor:pointer;user-select:none}
.reasoning div{margin-top:6px;white-space:pre-wrap;max-height:200px;overflow:auto}

/* 气泡操作按钮 */
.bubble-acts{position:absolute;top:-8px;right:-4px;display:flex;gap:4px;opacity:0;transition:opacity .15s}
.msg:hover .bubble-acts,.msg .bubble-acts{opacity:.55}
.msg .bubble-acts:hover{opacity:1}
.act-btn{
  width:28px;height:28px;border-radius:7px;border:1px solid #4a3535;background:var(--card2);
  color:var(--txt);font-size:13px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;
}
.err-box{border:1px solid rgba(239,68,68,.5);background:rgba(120,20,20,.18);border-radius:10px;padding:10px 12px;color:#ffb4b4;font-size:14px;margin-top:6px;word-break:break-word}
.err-box .btn{margin-top:8px}

/* ===== 快捷指令 ===== */
.chips{display:flex;gap:8px;overflow-x:auto;padding:8px 12px;background:var(--bg2);border-top:1px solid var(--line);flex:0 0 auto;scrollbar-width:none}
.chips::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;padding:7px 13px;border-radius:999px;border:1px solid #4a3535;background:#221a1a;
  color:var(--txt);font-size:13px;cursor:pointer;white-space:nowrap;
}
.chip:active{transform:scale(.95)}
.chip.hot{border-color:var(--red);color:#ffd9d9;background:#2a1212}
.chip.gold{border-color:var(--gold);color:#f0d9a8}

/* ===== 输入区 ===== */
.composer{
  display:flex;gap:8px;padding:10px 12px calc(12px + env(safe-area-inset-bottom));
  background:var(--bg2);border-top:1px solid var(--line);flex:0 0 auto;
}
#input{
  flex:1;resize:none;background:#1c1515;border:1px solid #3a2c2c;color:var(--txt);
  border-radius:12px;padding:10px 12px;font-size:16px;line-height:1.5;max-height:140px;min-height:44px;
  outline:none;font-family:inherit;
}
#input:focus{border-color:var(--red)}
.send-btn{
  width:66px;border-radius:12px;border:none;background:linear-gradient(135deg,var(--red),#7a1010);
  color:#fff;font-weight:700;font-size:15px;cursor:pointer;flex:0 0 auto;
}
.send-btn.stop{background:#555;color:#ccc}
.send-btn:active{transform:scale(.96)}

/* ===== 抽屉 ===== */
.drawer{
  position:fixed;z-index:60;background:var(--card);border:1px solid var(--line);
  display:flex;flex-direction:column;transition:transform .25s ease;box-shadow:0 -8px 40px rgba(0,0,0,.5);
}
@media (max-width:767px){
  .drawer{left:0;right:0;bottom:0;top:auto;max-height:80dvh;border-radius:16px 16px 0 0;border-bottom:none;transform:translateY(105%)}
  .drawer.open{transform:translateY(0)}
}
@media (min-width:768px){
  .drawer{right:14px;top:70px;bottom:14px;width:384px;border-radius:14px;transform:translateX(115%)}
  .drawer.open{transform:translateX(0)}
}
.drawer-head{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;border-bottom:1px solid var(--line);font-weight:700}
.drawer-body{flex:1;overflow-y:auto;padding:12px 16px}
.dim{color:var(--dim);font-weight:400;font-size:.88em}
.sec-title{font-size:12px;color:var(--gold);letter-spacing:2px;margin:14px 0 8px;border-bottom:1px dashed #4a3535;padding-bottom:4px}
.sec-title:first-child{margin-top:0}
.kv{display:flex;justify-content:space-between;gap:10px;padding:7px 2px;border-bottom:1px solid rgba(255,255,255,.05);font-size:14px}
.kv b{color:var(--dim);font-weight:500;flex:0 0 auto}
.kv span{text-align:right;word-break:break-word;color:var(--txt)}
.kv span.tap{cursor:pointer;color:#9db8ff}
.kv span.tap:hover{text-decoration:underline}
.item-row{display:flex;align-items:center;gap:8px;padding:8px 4px;border-bottom:1px solid rgba(255,255,255,.05)}
.item-row .nm{flex:1;word-break:break-word}
.item-row .del{width:26px;height:26px;border-radius:6px;border:1px solid #5a2c2c;background:transparent;color:#ff8f8f;cursor:pointer;font-size:12px}
.item-row .del:active{transform:scale(.92)}
.note-item{font-size:13px;padding:8px 10px;border-radius:8px;margin-bottom:6px;background:rgba(255,255,255,.04);word-break:break-word}
.note-item.info{border-left:3px solid #1D4ED8}
.note-item.suspect{border-left:3px solid #B45309}
.add-row{display:flex;gap:6px;margin-top:10px}
.add-row input{flex:1;background:#1c1515;border:1px solid #3a2c2c;color:var(--txt);border-radius:9px;padding:8px 10px;font-size:14px;outline:none}
.add-row button{padding:8px 14px;border-radius:9px;border:none;background:var(--red);color:#fff;cursor:pointer;font-size:13px}
.empty{padding:20px 6px;text-align:center;color:var(--dim);font-size:13px}
.dr-actions{display:flex;gap:8px;margin-top:14px;flex-wrap:wrap}
.btn{padding:8px 14px;border-radius:9px;border:1px solid #4a3535;cursor:pointer;font-size:13px;background:#332828;color:var(--txt)}
.btn:active{transform:scale(.96)}
.btn.primary{background:var(--red);border-color:var(--red);color:#fff}
.btn.danger{background:transparent;border-color:#7a2a2a;color:#ff9b9b}
.btn.ghost{background:transparent}

/* ===== 遮罩 / 弹窗 ===== */
.backdrop{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:55;display:none;backdrop-filter:blur(2px)}
.backdrop.open{display:block}
.modal-wrap{position:fixed;inset:0;z-index:80;display:none;align-items:center;justify-content:center;padding:16px;background:rgba(0,0,0,.62);backdrop-filter:blur(3px)}
.modal-wrap.open{display:flex}
.modal{width:100%;max-width:540px;max-height:88dvh;overflow-y:auto;background:var(--card);border:1px solid #3d2e2e;border-radius:16px;padding:18px;box-shadow:0 20px 60px rgba(0,0,0,.6)}
.modal h2{font-family:'Noto Serif SC',serif;margin:0 0 14px;font-size:19px;color:var(--txt)}
.field{margin-bottom:12px}
.field label{display:block;font-size:12px;color:var(--dim);margin-bottom:5px}
.field input,.field select,.field textarea{
  width:100%;background:#1c1515;border:1px solid #3a2c2c;color:var(--txt);border-radius:10px;
  padding:9px 11px;font-size:15px;box-sizing:border-box;outline:none;font-family:inherit;
}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--red)}
.field textarea{resize:vertical}
.field.row{display:flex;align-items:center;gap:10px}
.row{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.note{font-size:12px;margin:10px 0 0}
kbd{background:#2a2020;border:1px solid #4a3535;border-bottom-width:2px;border-radius:5px;padding:1px 7px;font-size:12px;font-family:ui-monospace,Consolas,monospace;color:var(--txt)}
.keys{width:100%;border-collapse:collapse;font-size:13px}
.keys td{padding:6px 4px;border-bottom:1px solid rgba(255,255,255,.05);vertical-align:top}
.keys td:first-child{white-space:nowrap;color:var(--gold)}
.help-list{margin:8px 0 0;padding-left:20px;font-size:13px;color:var(--txt)}
.help-list li{margin-bottom:6px}

/* ===== Toast ===== */
#toast{
  position:fixed;left:50%;bottom:calc(120px + env(safe-area-inset-bottom));transform:translateX(-50%) translateY(12px);
  z-index:90;background:rgba(30,26,22,.96);border:1px solid var(--line);color:var(--txt);
  padding:9px 16px;border-radius:10px;opacity:0;transition:all .25s;pointer-events:none;
  max-width:88vw;font-size:13px;box-shadow:0 6px 24px rgba(0,0,0,.5);
}
#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
#toast.gain{background:rgba(22,101,52,.95);border-color:var(--green);color:#fff}
#toast.warn{background:rgba(146,64,14,.95);border-color:var(--amber);color:#fff}
#toast.err{background:rgba(150,20,20,.95);border-color:#EF4444;color:#fff}

/* 欢迎卡 */
.welcome{max-width:440px;margin:10vh auto 0;text-align:center;padding:0 14px}
.welcome .w-mark{font-family:'Noto Serif SC',serif;font-size:44px;color:var(--red);text-shadow:0 0 24px rgba(179,27,27,.6);letter-spacing:4px}
.welcome h2{font-size:20px;margin:10px 0 6px}
.welcome p{color:var(--dim);font-size:14px}
.welcome .btn{margin-top:14px;font-size:15px;padding:10px 22px}

::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-thumb{background:#3a2c2c;border-radius:4px}
::-webkit-scrollbar-track{background:transparent}