/* 数据知产云 · 总控 —— 主题 A「简洁专业」，支持浅色 / 深色 */
:root{
  --bg:#ffffff;--side:#f6f7f9;--surface:#ffffff;--surface-2:#f8fafc;--hover:#eef1f5;--active:#e6eaf0;
  --line:#e5e8ee;--line-2:#d5dae2;--text:#0f172a;--text-2:#334155;--sub:#64748b;
  --accent:#2f6bff;--accent-2:#4338ca;--accent-soft:#edf2ff;--accent-text:#2459e0;--on-accent:#ffffff;
  --ok:#16a34a;--ok-soft:#e8f7ee;--warn:#b45309;--warn-soft:#fdf3e1;--bad:#dc2626;--bad-soft:#fdecec;
  --pro:#6d4ae8;--pro-soft:#f1edff;--bubble:#eef2f8;--code:#f1f4f8;
  --shadow:0 1px 2px rgba(15,23,42,.04),0 4px 16px rgba(15,23,42,.04);--shadow-lg:0 8px 32px rgba(15,23,42,.10);
  --radius:14px;
  --font:"MiSans",-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Microsoft YaHei","Segoe UI",sans-serif;
  color-scheme:light;
}
[data-theme="dark"]{
  --bg:#111318;--side:#0c0e12;--surface:#171a21;--surface-2:#1b1f27;--hover:#1f242d;--active:#262c37;
  --line:#262b35;--line-2:#343b48;--text:#e7eaf0;--text-2:#c4cad4;--sub:#8b94a3;
  --accent:#5b8cff;--accent-2:#7c6cff;--accent-soft:#1b2540;--accent-text:#8eb0ff;--on-accent:#ffffff;
  --ok:#3fcf7a;--ok-soft:#132a1d;--warn:#f0b35a;--warn-soft:#2d2313;--bad:#f87171;--bad-soft:#321a1c;
  --pro:#b39dff;--pro-soft:#251f3d;--bubble:#1f2530;--code:#1f242d;
  --shadow:0 1px 2px rgba(0,0,0,.3);--shadow-lg:0 12px 40px rgba(0,0,0,.45);
  color-scheme:dark;
}
*{box-sizing:border-box}
html,body{height:100%;margin:0}
body{font:15px/1.7 var(--font);color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;transition:background .2s,color .2s}
button{font:inherit;color:inherit;cursor:pointer}
.i{flex:none;display:inline-block;vertical-align:middle}
.hidden{display:none!important}
.muted{color:var(--sub)}
.err{color:var(--bad);font-size:13px;min-height:20px;margin-top:8px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:10px;padding:7px 14px;font-size:14px;text-decoration:none;transition:background .15s,border-color .15s}
.btn:hover{background:var(--hover)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--on-accent)}
.btn.primary:hover{filter:brightness(1.06)}
.btn.ghost{background:transparent}
.btn.block{width:100%;margin-top:12px;padding:11px}
.btn.sm{padding:4px 10px;font-size:13px;border-radius:8px}
.icon-btn{display:inline-grid;place-items:center;border:0;background:transparent;width:36px;height:36px;border-radius:9px;color:var(--sub);flex:none}
.icon-btn:hover{background:var(--hover);color:var(--text)}
.logo{display:block;width:44px;height:44px;border-radius:12px}
.logo.sm{width:28px;height:28px;border-radius:8px}
.logo.lg{width:56px;height:56px;border-radius:15px;margin:0 auto}
.logo.xl{width:60px;height:60px;border-radius:16px;margin:0 auto;box-shadow:0 8px 24px rgba(47,107,255,.25)}

/* 登录 */
.login{min-height:100%;display:grid;place-items:center;padding:24px;background:radial-gradient(1200px 600px at 50% -10%,var(--accent-soft),transparent 60%),var(--side)}
.login-card{width:100%;max-width:360px;background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:36px 32px;text-align:center;box-shadow:var(--shadow-lg)}
.login-card h1{font-size:20px;margin:16px 0 2px;font-weight:600}
.login-card input{width:100%;margin-top:22px;padding:12px 14px;border:1px solid var(--line);border-radius:12px;font-size:16px;text-align:center;letter-spacing:.3em;background:var(--surface-2);color:var(--text)}
.login-card input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}

/* 布局 */
.app{display:flex;height:100%;height:100dvh;overflow:hidden}
.sidebar{width:268px;flex-shrink:0;background:var(--side);border-right:1px solid var(--line);display:flex;flex-direction:column;padding:12px}
.side-top{display:flex;justify-content:space-between;align-items:center;padding:4px 6px 12px}
.brand{display:flex;gap:10px;align-items:center}
.brand span{display:flex;flex-direction:column;line-height:1.25}
.brand b{font-weight:600;font-size:15px}
.brand small{font-size:11px;color:var(--sub)}
.new-chat{width:100%;justify-content:flex-start;padding:9px 12px;box-shadow:var(--shadow)}
.side-scroll{flex:1;overflow-y:auto;margin:8px -4px 0;padding:0 4px}
.side-label{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--sub);margin:16px 8px 4px}
.side-item{display:flex;align-items:center;gap:8px;width:100%;text-align:left;border:0;background:transparent;padding:8px 10px;border-radius:9px;font-size:14px;white-space:nowrap;overflow:hidden;color:var(--text-2)}
.side-item:hover{background:var(--hover);color:var(--text)}
.side-item.active{background:var(--active);color:var(--text);font-weight:500}
.side-item .t{flex:1;overflow:hidden;text-overflow:ellipsis}
.side-item .del{opacity:0;border:0;background:transparent;color:var(--sub);padding:2px;border-radius:6px;display:inline-grid;place-items:center}
.side-item .del:hover{color:var(--bad);background:var(--bad-soft)}
.side-item:hover .del,.side-item.active .del{opacity:1}
.side-empty{font-size:13px;color:var(--sub);padding:4px 10px}
.side-bottom{border-top:1px solid var(--line);padding-top:8px}
.usage-mini{font-size:12px;color:var(--sub);padding:2px 10px}
.badge{font-size:11px;line-height:18px;padding:0 8px;border-radius:99px;background:var(--hover);color:var(--sub);flex-shrink:0;font-weight:500}
.badge.queued{background:var(--accent-soft);color:var(--accent-text)}
.badge.running{background:var(--accent-soft);color:var(--accent-text)}
.badge.done{background:var(--ok-soft);color:var(--ok)}
.badge.paused,.badge.blocked{background:var(--warn-soft);color:var(--warn)}
.badge.failed,.badge.cancelled{background:var(--bad-soft);color:var(--bad)}

.main{flex:1;min-width:0;display:flex;flex-direction:column;background:var(--bg)}
.topbar{height:56px;display:flex;align-items:center;gap:6px;padding:0 16px;border-bottom:1px solid var(--line)}
.conv-title{flex:1;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mode-wrap{position:relative;display:inline-flex;align-items:center}
.mode{appearance:none;-webkit-appearance:none;border:1px solid var(--line);border-radius:9px;padding:5px 28px 5px 12px;background:var(--surface);color:var(--text);font:inherit;font-size:13px;cursor:pointer}
.mode-wrap .i{position:absolute;right:9px;pointer-events:none;color:var(--sub)}
.thread{flex:1;overflow-y:auto;padding:8px 16px 24px}
.messages{max-width:780px;margin:0 auto}
.empty{max-width:580px;margin:12vh auto 0;text-align:center}
.empty h2{font-size:26px;margin:20px 0 6px;font-weight:600;letter-spacing:.01em}
.chips{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:26px}
.chip{display:inline-flex;align-items:center;gap:7px;border:1px solid var(--line);background:var(--surface);border-radius:99px;padding:8px 16px;font-size:14px;color:var(--text-2);box-shadow:var(--shadow);transition:all .15s}
.chip .i{color:var(--accent)}
.chip:hover{border-color:var(--accent);color:var(--text)}

/* 消息 */
.msg{margin:24px 0}
.msg.user{display:flex;justify-content:flex-end}
.msg.user .bubble{background:var(--bubble);border-radius:18px 18px 4px 18px;padding:9px 16px;max-width:82%;white-space:pre-wrap;word-break:break-word}
.msg.assistant .meta{font-size:12px;color:var(--sub);margin-bottom:6px;display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.model-tag{background:var(--hover);border-radius:6px;padding:1px 8px;font-weight:500}
.model-tag.pro{background:var(--pro-soft);color:var(--pro)}
.model-tag.done{background:var(--ok-soft);color:var(--ok)}
details.think{margin:4px 0 8px;font-size:13px;color:var(--sub)}
details.think summary{cursor:pointer;list-style:none;display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:99px;background:var(--hover)}
details.think summary::-webkit-details-marker{display:none}
details.think .think-body{border-left:2px solid var(--line-2);padding:4px 0 4px 12px;margin-top:8px;white-space:pre-wrap;max-height:320px;overflow:auto}
.md{word-break:break-word}
.md p{margin:.55em 0}
.md h1,.md h2,.md h3,.md h4{margin:1.1em 0 .45em;line-height:1.4;font-weight:600}
.md h1{font-size:1.35em}.md h2{font-size:1.2em}.md h3{font-size:1.08em}
.md ul,.md ol{padding-left:1.4em;margin:.4em 0}
.md li{margin:.2em 0}
.md b{font-weight:600}
.md code{background:var(--code);border-radius:5px;padding:.1em .35em;font-size:.9em}
.md pre{background:var(--code);border:1px solid var(--line);border-radius:10px;padding:12px;overflow:auto}
.md pre code{background:none;padding:0}
.md table{border-collapse:collapse;margin:.6em 0;display:block;overflow-x:auto}
.md th,.md td{border:1px solid var(--line);padding:6px 10px;text-align:left;vertical-align:top}
.md th{background:var(--surface-2);font-weight:600}
.md blockquote{margin:.5em 0;padding:.2em 1em;border-left:3px solid var(--accent);background:var(--surface-2);border-radius:0 8px 8px 0;color:var(--text-2)}
.md a{color:var(--accent-text)}
.cursor::after{content:"▍";animation:blink 1s steps(1) infinite;color:var(--accent)}
@keyframes blink{50%{opacity:0}}
.typing{color:var(--sub);font-size:14px}
.msg-err{color:var(--bad);background:var(--bad-soft);border-radius:10px;padding:8px 12px;font-size:14px}

/* 卡片 */
.card{border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;margin:12px 0;background:var(--surface);box-shadow:var(--shadow);position:relative;overflow:hidden}
.card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--accent)}
.card[data-mem]::before{background:var(--pro)}
.card.delivery::before{background:var(--ok)}
.card-head{display:flex;align-items:center;gap:8px;margin-bottom:6px;flex-wrap:wrap}
.card-head .badge{margin-left:auto}
.card-kind{font-size:12px;color:var(--accent-text);background:var(--accent-soft);border-radius:6px;padding:1px 8px;font-weight:500}
.card-kind.mem{color:var(--pro);background:var(--pro-soft)}
.card-kind.done{background:var(--ok-soft);color:var(--ok)}
.card h4{margin:4px 0 0;font-size:16px;font-weight:600;flex-basis:100%;order:3;line-height:1.45}
.card dl{margin:6px 0 0;font-size:14px}
.card dt{color:var(--sub);font-size:12px;margin-top:10px}
.card dd{margin:2px 0 0;color:var(--text-2)}
.card dd ul{margin:0;padding-left:1.2em}
.card-actions{display:flex;gap:8px;margin-top:14px;flex-wrap:wrap}
.card .excerpt{max-height:180px;overflow:hidden;position:relative;font-size:14px;color:var(--text-2);margin-top:8px}
.card .excerpt::after{content:"";position:absolute;left:0;right:0;bottom:0;height:60px;background:linear-gradient(transparent,var(--surface))}
.issues{background:var(--warn-soft);border-radius:10px;padding:8px 12px;margin-top:10px;font-size:13px;color:var(--warn)}
.issues ul{margin:4px 0 0;padding-left:18px}

/* 进度 */
.prog{margin:14px 0 4px}
.prog .bar{height:6px;border-radius:99px;background:var(--hover);overflow:hidden}
.prog .bar i{display:block;height:100%;background:var(--accent);border-radius:99px;transition:width .6s ease}
.prog.done .bar i{background:var(--ok)}
.prog.paused .bar i,.prog.blocked .bar i,.prog.failed .bar i{background:var(--warn)}
.prog.running .bar i{background:linear-gradient(90deg,var(--accent),var(--accent-2),var(--accent));background-size:200% 100%;animation:flow 1.6s linear infinite}
@keyframes flow{to{background-position:-200% 0}}
.prog-txt{display:flex;justify-content:space-between;gap:12px;font-size:13px;color:var(--sub);margin-top:6px}
.prog-txt span:first-child{flex:1;min-width:0}

/* 输入区 */
.composer-wrap{padding:0 16px calc(10px + env(safe-area-inset-bottom))}
.composer{max-width:780px;margin:0 auto;display:flex;align-items:flex-end;gap:8px;border:1px solid var(--line);border-radius:24px;padding:8px 8px 8px 18px;background:var(--surface);box-shadow:var(--shadow-lg);transition:border-color .15s}
.composer:focus-within{border-color:var(--accent)}
.composer textarea{flex:1;border:0;resize:none;outline:none;font:inherit;max-height:200px;padding:6px 0;background:transparent;color:var(--text)}
.composer textarea::placeholder{color:var(--sub)}
.send{display:grid;place-items:center;width:38px;height:38px;border-radius:50%;border:0;background:var(--accent);color:var(--on-accent);flex-shrink:0;transition:filter .15s}
.send:hover{filter:brightness(1.08)}
.send:disabled{background:var(--line-2);color:var(--surface);cursor:default}
.hint{max-width:780px;margin:6px auto 0;text-align:center;font-size:12px;color:var(--sub)}

/* 详情面板 */
.panel{width:0;overflow:hidden;border-left:1px solid var(--line);background:var(--surface);transition:width .2s;display:flex;flex-direction:column}
.panel.open{width:400px}
.panel-head{display:flex;justify-content:space-between;align-items:center;padding:10px 12px 10px 18px;border-bottom:1px solid var(--line);min-height:56px}
.panel-body{padding:18px;overflow-y:auto;flex:1;min-width:360px}
.ptask-head{display:flex;align-items:flex-start;gap:10px}
.ptask-head h3{flex:1;margin:0;font-size:17px;line-height:1.45;font-weight:600}
.kv{display:grid;grid-template-columns:auto 1fr;gap:6px 14px;font-size:13px;margin:14px 0}
.kv span:nth-child(odd){color:var(--sub)}
.pactions{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:6px}
.psec{border-top:1px solid var(--line);padding-top:16px;margin-top:16px}
.psec-head{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:10px}
.psec-head span{display:flex;gap:6px;align-items:center}
.psec summary{cursor:pointer}
.psec p{margin:6px 0;font-size:14px;line-height:1.75;color:var(--text-2)}
.deliver{font-size:15px;line-height:1.85;background:var(--surface-2);border:1px solid var(--line);border-radius:12px;padding:4px 18px}
.checks{list-style:none;padding:0;margin:8px 0;font-size:13px}
.checks li{display:flex;gap:8px;padding:5px 0}
.checks li>span{flex:none;width:18px;height:18px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-size:11px;margin-top:2px}
.checks li.ok>span{background:var(--ok-soft);color:var(--ok)}
.checks li.no>span{background:var(--bad-soft);color:var(--bad)}
.steps{list-style:none;padding:0;margin:0}
.step{display:flex;gap:10px;padding:8px 0;position:relative}
.step:not(:last-child)::before{content:"";position:absolute;left:10px;top:32px;bottom:-4px;width:2px;background:var(--line)}
.step .dot{flex:none;width:22px;height:22px;border-radius:50%;background:var(--ok-soft);color:var(--ok);font-size:12px;display:flex;align-items:center;justify-content:center;font-weight:700}
.step.running .dot{background:var(--accent-soft);border:2px solid var(--accent-soft);border-top-color:var(--accent);animation:spin 1s linear infinite}
.step.failed .dot{background:var(--bad-soft);color:var(--bad)}
.step.interrupted .dot{background:var(--hover);color:var(--sub)}
@keyframes spin{to{transform:rotate(360deg)}}
.step-main{flex:1;min-width:0}
.step-head{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:14px}
.step-head b{font-weight:500}
.step-head .muted{font-size:12px}
.step details{margin-top:4px;font-size:13px}
.step details summary{color:var(--sub);cursor:pointer}
.step details .md{font-size:13px;background:var(--surface-2);border-radius:8px;padding:2px 12px;margin-top:6px;max-height:420px;overflow:auto}
.step-run{font-size:13px}

/* 设置弹窗 */
.modal{position:fixed;inset:0;background:rgba(8,12,20,.45);backdrop-filter:blur(2px);display:grid;place-items:center;z-index:50;padding:16px}
.modal-card{width:100%;max-width:480px;max-height:88vh;background:var(--surface);border:1px solid var(--line);border-radius:18px;display:flex;flex-direction:column;overflow:hidden;box-shadow:var(--shadow-lg)}
.modal-body{padding:6px 20px 18px;overflow-y:auto}
.setting-row{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:12px 0;border-bottom:1px solid var(--line);font-size:14px}
.setting-row>span:last-child{display:flex;align-items:center;gap:6px}
.setting-row input{width:80px;padding:5px 8px;border:1px solid var(--line);border-radius:8px;font:inherit;background:var(--surface-2);color:var(--text)}
.seg{display:inline-flex!important;background:var(--hover);border-radius:10px;padding:3px;gap:2px!important}
.seg button{display:inline-flex;align-items:center;gap:5px;border:0;background:transparent;border-radius:8px;padding:4px 10px;font-size:13px;color:var(--sub)}
.seg button.on{background:var(--surface);color:var(--text);box-shadow:var(--shadow)}
.modal h4{margin:18px 0 6px;font-weight:600}
.mem-list .mem{display:flex;gap:8px;align-items:flex-start;padding:8px 0;border-bottom:1px dashed var(--line);font-size:14px}
.mem-list .mem span{flex:1}
.credits{font-size:12px;color:var(--sub);text-align:center;margin:14px 0 0}
.toast{position:fixed;left:50%;bottom:96px;transform:translateX(-50%);background:var(--text);color:var(--bg);padding:8px 18px;border-radius:99px;font-size:14px;z-index:60;box-shadow:var(--shadow-lg)}

.only-mobile{display:none}
.scrim{display:none}
@media (max-width:860px){
  .only-mobile{display:inline-grid}
  .sidebar{position:fixed;inset:0 auto 0 0;z-index:40;transform:translateX(-100%);transition:transform .22s;width:84vw;max-width:310px;padding-top:calc(12px + env(safe-area-inset-top))}
  .sidebar.open{transform:none;box-shadow:var(--shadow-lg)}
  .scrim.show{display:block;position:fixed;inset:0;background:rgba(8,12,20,.4);z-index:35}
  .topbar{padding:0 8px;padding-top:env(safe-area-inset-top);height:calc(54px + env(safe-area-inset-top))}
  .panel{position:fixed;inset:0;z-index:45;width:100%!important;transform:translateY(100%);transition:transform .22s;border:0}
  .panel.open{transform:none}
  .panel-body{min-width:0}
  .thread{padding:4px 14px 16px}
  .composer-wrap{padding:0 10px calc(8px + env(safe-area-inset-bottom))}
  .composer textarea{font-size:16px}
  .msg.user .bubble{max-width:88%}
  .empty{margin-top:8vh}
  .empty h2{font-size:22px}
  .seg button{padding:4px 8px}
}

/* 私有附件与拖放 */
button:disabled{cursor:not-allowed;opacity:.5}
button:focus-visible,a:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.add-file{width:44px;height:44px;align-self:flex-end;margin-bottom:1px}
.composer{align-items:flex-end}
.composer textarea{min-width:0}
.pending-files{max-width:780px;margin:0 auto 10px;display:flex;gap:8px;overflow-x:auto;padding:3px}
.attach{display:flex;align-items:center;gap:10px;flex:0 0 260px;max-width:90%;padding:10px 8px 10px 12px;border:1px solid var(--line-2);border-radius:12px;background:var(--surface);font-size:14px}
.attach>img{width:40px;height:44px;object-fit:cover;border-radius:6px}
.attach>.i{color:var(--accent)}
.attach-main{flex:1;min-width:0;display:flex;flex-direction:column;line-height:1.45;gap:3px}
.attach-main b{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:500}
.attach-main>span{font-size:12px;color:var(--sub)}
.attach-main .attach-warning{font-size:11px;max-height:32px;overflow-y:auto}
.attach.error{border-color:var(--bad)}.attach.error .attach-main>span{color:var(--bad)}
.attach .icon-btn{width:36px;height:44px}
.sent-files{display:flex;flex-direction:column;gap:8px;margin-bottom:8px;white-space:normal}
.sent-file{display:flex;align-items:center;gap:8px;border:1px solid var(--line-2);background:var(--surface);padding:9px 12px;border-radius:10px;text-decoration:none;color:var(--text);font-size:14px;max-width:100%;min-height:44px}
.sent-file>span{flex:1;min-width:0;overflow-wrap:anywhere}.sent-file small{display:block;font-size:12px;color:var(--sub)}
.drop-zone{position:fixed;inset:12px;z-index:80;border:2px dashed var(--accent);border-radius:20px;background:color-mix(in srgb,var(--surface) 94%,transparent);display:grid;place-items:center;pointer-events:none;backdrop-filter:blur(8px);text-align:center;color:var(--accent-text);font-size:24px;font-weight:600}
.drop-zone small{display:block;color:var(--sub);font-size:14px;font-weight:400;margin-top:12px}
.hint{font-size:12px!important}
/* 风格与明暗独立切换；图像只在边缘和欢迎区露出，正文保留稳定对比度。 */
[data-style="sakura"]{--accent:#a43769;--accent-2:#7c3f8c;--accent-soft:#fcecf3;--accent-text:#9a2d60;--bubble:#f8edf3;--wall:url('/themes/sakura.webp');--bg:#fdfafb;--side:#f8f0f5}
[data-style="starry"]{--accent:#4854c5;--accent-2:#6348b5;--accent-soft:#eeeefe;--accent-text:#4449af;--bubble:#eeeffa;--wall:url('/themes/starry.webp');--bg:#fafaff;--side:#eeeef8}
[data-theme="dark"][data-style="sakura"]{--accent:#d96295;--accent-2:#a68bfa;--accent-soft:#352032;--accent-text:#ffabd0;--bubble:#302331;--side:#1c1721;--bg:#1b1820;--on-accent:#181119}
[data-theme="dark"][data-style="starry"]{--accent:#9ca5ff;--accent-2:#b8a2ff;--accent-soft:#262747;--accent-text:#bbc2ff;--bubble:#25273e;--side:#131626;--bg:#171a2b;--on-accent:#141625}
[data-style="sakura"] .main,[data-style="starry"] .main{background-image:linear-gradient(color-mix(in srgb,var(--bg) 92%,transparent),color-mix(in srgb,var(--bg) 94%,transparent)),var(--wall);background-size:cover;background-position:center}
[data-style="sakura"] .sidebar,[data-style="starry"] .sidebar{background-image:linear-gradient(color-mix(in srgb,var(--side) 86%,transparent),color-mix(in srgb,var(--side) 96%,transparent)),var(--wall);background-size:cover;background-position:center}
[data-style="sakura"] .login,[data-style="starry"] .login{background:linear-gradient(90deg,rgba(26,20,45,.35),rgba(26,20,45,.12)),var(--wall) center/cover}
[data-style="sakura"] .login-card,[data-style="starry"] .login-card{background:color-mix(in srgb,var(--surface) 96%,transparent);backdrop-filter:blur(18px)}
[data-style="sakura"] .empty,[data-style="starry"] .empty{max-width:660px;margin-top:7vh;padding:38px 32px 32px;border-radius:20px;border:1px solid var(--line);background:var(--surface);position:relative;overflow:hidden}
[data-style="sakura"] .empty::before,[data-style="starry"] .empty::before{content:"";display:block;height:120px;background:var(--wall) center 34%/cover;margin:-38px -32px 30px}
[data-style="sakura"] .empty::before{background-position:center 40%}
[data-style="sakura"] .empty .logo,[data-style="starry"] .empty .logo{display:none}
.empty .muted{margin:0}
.theme-picker{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:16px 0}
.theme-choice{min-width:0;border:1px solid var(--line);border-radius:10px;background:var(--surface);padding:6px;text-align:left}
.theme-choice.on{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}
.theme-choice b,.theme-choice small{display:block;padding:0 3px;font-size:13px}.theme-choice small{font-size:11px;color:var(--sub);margin:2px 0 3px}
.theme-thumb{display:block;height:58px;border-radius:6px;margin-bottom:6px;background:center/cover}
.theme-thumb.clean{background:linear-gradient(125deg,#f3f5fa 40%,#dfe8ff)}.theme-thumb.sakura{background-image:url('/themes/sakura.webp');background-position:center 40%}.theme-thumb.starry{background-image:url('/themes/starry.webp')}
.credits a{color:var(--sub)}
@media(max-width:860px){
  [data-style="sakura"] .empty,[data-style="starry"] .empty{margin-top:4vh;padding:28px 20px 24px}
  [data-style="sakura"] .empty::before,[data-style="starry"] .empty::before{height:125px;margin:-28px -20px 24px}
  .empty h2{font-size:21px;line-height:1.5}.empty .muted{font-size:14px}.chips{margin-top:20px;gap:8px}.chip{font-size:13px;padding:9px 12px}
  .attach{flex-basis:245px}.modal-body{padding:6px 14px 18px}.theme-picker{gap:7px}
  .setting-row:first-child{flex-direction:column;align-items:flex-start;gap:8px}
}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important;animation:none!important}}
/* 对话引用与复制 */
.msg.user{flex-direction:column;align-items:flex-end}
.message-actions{display:flex;align-items:center;gap:8px;margin-top:7px}
.message-actions button{display:inline-flex;align-items:center;gap:5px;border:0;border-radius:6px;background:transparent;color:var(--sub);font-size:12px;min-height:36px;padding:4px 8px}
.message-actions button:hover{background:var(--hover);color:var(--text)}
.quote-preview{max-width:780px;margin:0 auto 10px;background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:10px;display:flex;align-items:center;gap:12px;padding:10px 10px 10px 14px}
.quote-preview>div{min-width:0;flex:1;display:flex;flex-direction:column;gap:3px}.quote-preview b{font-size:12px;color:var(--accent-text)}.quote-preview span{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;word-break:break-word;font-size:13px;color:var(--text-2);white-space:pre-wrap;max-height:48px}
.quoted-message{display:block;width:100%;text-align:left;border:0;border-left:3px solid var(--accent);background:var(--surface);padding:8px 12px;border-radius:4px 8px 8px 4px;white-space:normal;margin-bottom:8px;max-height:112px;overflow:hidden}
.quoted-message b{display:block;color:var(--accent-text);font-size:12px;font-weight:500}.quoted-message span{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;font-size:13px;color:var(--text-2);white-space:pre-wrap}
.quote-highlight{outline:2px solid var(--accent);outline-offset:8px;border-radius:8px}
@media(max-width:860px){.message-actions button{min-height:44px;padding:4px 10px}}