/* ===== MiniAI 共用设计系统 ===== */
*{margin:0;padding:0;box-sizing:border-box}
:root{
  /* 黑灰基调：用灰阶亮度差建立层次，不靠彩色 */
  --bg:#09090b; --bg-soft:#111113; --bg-elev:#17171a; --bg-hover:#1e1e22;
  --bg-side:#0b0b0d;
  --border:#242428; --border-hover:#34343a; --border-strong:#45454d;
  --text:#f4f4f5; --text-dim:#9b9ba3; --text-faint:#63636b;
  /* 唯一的强调色：靛紫。只用在关键交互上（主按钮/链接/选中/焦点），其余保持灰阶 */
  --accent:#7d7bf5; --accent-strong:#9d9bff;
  --accent-soft:rgba(125,123,245,.14); --accent-line:rgba(125,123,245,.32);
  --blue:#7d7bf5; --blue-dark:#9d9bff; --blue-soft:rgba(125,123,245,.14);
  --on-accent:#ffffff; --ring:rgba(125,123,245,.3);
  /* 语义色降饱和，和灰底更协调，但报错仍然一眼能认出 */
  --ok:#6ee7b7; --warn:#fcd34d; --err:#fca5a5;
  --radius:12px; --radius-lg:16px;
  --shadow-1:0 1px 2px rgba(0,0,0,.5);
  --shadow-2:0 14px 34px -14px rgba(0,0,0,.75);
  --shadow-3:0 34px 70px -26px rgba(0,0,0,.9);
}
html{scroll-behavior:smooth}
body{
  min-height:100vh;background-color:var(--bg);color:var(--text);
  background-image:
    radial-gradient(ellipse 70% 45% at 50% -8%,rgba(125,123,245,.10),transparent 72%),
    radial-gradient(ellipse 50% 35% at 88% 4%,rgba(255,255,255,.045),transparent 70%);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  line-height:1.65;
}
a{color:var(--accent);text-decoration:none;transition:color .18s}
a:hover{color:var(--accent-strong)}
h1,h2,h3,h4{font-weight:650;letter-spacing:-.02em;line-height:1.25}
::selection{background:rgba(125,123,245,.32)}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-thumb{background:#2a2a2e;border-radius:6px}
::-webkit-scrollbar-thumb:hover{background:#3a3a40}
::-webkit-scrollbar-track{background:transparent}

/* ---- 导航 ---- */
.nav{
  width:100%;height:64px;background-color:rgba(9,9,11,.72);
  backdrop-filter:blur(18px) saturate(180%);
  display:flex;align-items:center;gap:32px;padding:0 32px;
  border-bottom:1px solid rgba(255,255,255,.06);position:sticky;top:0;z-index:100;
}
.nav .logo{font-size:19px;font-weight:650;letter-spacing:-.02em;cursor:pointer;user-select:none}
.nav .logo span{color:var(--accent)}
.nav .links{display:flex;gap:26px;list-style:none}
.nav .links a{color:var(--text-dim);font-size:14px;position:relative;transition:color .2s}
.nav .links a:hover,.nav .links a.on{color:var(--text)}
.nav .right{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav .who{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--text-dim)}
.nav .who img{width:30px;height:30px;border-radius:50%;object-fit:cover;border:1px solid var(--border)}
.nav .who .av{width:30px;height:30px;border-radius:50%;background:var(--accent-soft);color:var(--accent);
  border:1px solid var(--accent-line);display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:650}
.nav-toggle{display:none;margin-left:auto;background:none;border:1px solid var(--border);
  color:var(--text-dim);border-radius:8px;padding:6px 12px;font-size:16px;cursor:pointer}

/* ---- 按钮 ---- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  font-family:inherit;font-size:14px;font-weight:500;cursor:pointer;
  padding:10px 20px;border-radius:10px;border:1px solid transparent;
  transition:background-color .18s,border-color .18s,color .18s,transform .12s,box-shadow .18s;
  white-space:nowrap;line-height:1.4;
}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn:active:not(:disabled){transform:translateY(.5px)}
/* 主按钮＝强调色。全站只有这里和链接/选中态用彩色，其余保持灰阶 */
.btn-primary{background:var(--accent);color:var(--on-accent);font-weight:600}
.btn-primary:hover:not(:disabled){background:var(--accent-strong);
  box-shadow:0 8px 24px -10px rgba(125,123,245,.75)}
.btn-ghost{background:transparent;border-color:var(--border-hover);color:var(--text-dim)}
.btn-ghost:hover:not(:disabled){color:var(--text);border-color:var(--border-strong);background:var(--bg-elev)}
.btn-soft{background:var(--bg-elev);border-color:var(--border);color:var(--text-dim)}
.btn-soft:hover:not(:disabled){background:var(--bg-hover);color:var(--text);border-color:var(--border-hover)}
.btn-danger{background:rgba(252,165,165,.1);border-color:rgba(252,165,165,.26);color:var(--err)}
.btn-danger:hover:not(:disabled){background:rgba(252,165,165,.18)}
.btn-ok{background:rgba(110,231,183,.1);border-color:rgba(110,231,183,.26);color:var(--ok)}
.btn-ok:hover:not(:disabled){background:rgba(110,231,183,.18)}
.btn-sm{padding:6px 13px;font-size:13px;border-radius:8px}
.btn-block{width:100%}
.btn:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible
  {outline:2px solid var(--ring);outline-offset:2px}

/* ---- 布局 ---- */
.wrap{max-width:1080px;margin:0 auto;padding:0 32px}
.wrap-sm{max-width:780px;margin:0 auto;padding:0 32px}
.page-pad{padding:44px 0 80px}
.section{padding:56px 0}
.section-title{font-size:26px;margin-bottom:10px}
.section-sub{color:var(--text-dim);font-size:15px;margin-bottom:34px}
.row{display:flex;align-items:center;gap:12px}
.row-between{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.grid{display:grid;gap:18px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.mt-1{margin-top:8px}.mt-2{margin-top:16px}.mt-3{margin-top:24px}.mt-4{margin-top:32px}
.mb-1{margin-bottom:8px}.mb-2{margin-bottom:16px}.mb-3{margin-bottom:24px}
.dim{color:var(--text-dim)}.faint{color:var(--text-faint)}
.small{font-size:13px}.mono{font-family:ui-monospace,Consolas,"Courier New",monospace}
.hidden{display:none!important}
.center{text-align:center}
.nowrap{white-space:nowrap}
.scroll-x{overflow-x:auto}

/* ---- 卡片 ---- */
.card{
  background:var(--bg-soft);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:26px;box-shadow:inset 0 1px 0 rgba(255,255,255,.035),var(--shadow-1);
  transition:border-color .25s,transform .25s,box-shadow .25s;
}
.card.hoverable:hover{border-color:var(--border-hover);transform:translateY(-3px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.055),var(--shadow-2)}
.card h3{font-size:16px;margin-bottom:9px;letter-spacing:-.01em}
.card p{color:var(--text-dim);font-size:14px;line-height:1.75}
.card .icon{
  width:42px;height:42px;border-radius:12px;background:var(--accent-soft);color:var(--accent);
  border:1px solid var(--accent-line);
  display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:650;margin-bottom:18px;
}
.stat{background:var(--bg-soft);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:20px 22px;box-shadow:inset 0 1px 0 rgba(255,255,255,.035)}
.stat .k{color:var(--text-dim);font-size:13px;margin-bottom:8px}
.stat .v{font-size:28px;font-weight:650;letter-spacing:-.02em}
.stat .v.blue{color:var(--text)}

/* ---- 表单 ---- */
.field{margin-bottom:18px}
.field label{display:block;color:var(--text-dim);font-size:13px;margin-bottom:8px}
.field .hint{color:var(--text-faint);font-size:12px;margin-top:6px}
input[type=text],input[type=email],input[type=password],input[type=number],input[type=time],textarea,select{
  width:100%;background:var(--bg-elev);border:1px solid var(--border);border-radius:10px;
  padding:11px 14px;color:var(--text);font-size:14px;font-family:inherit;outline:none;
  transition:border-color .18s,box-shadow .18s,background-color .18s;
}
input::placeholder,textarea::placeholder{color:var(--text-faint)}
input:hover:not(:focus),textarea:hover:not(:focus),select:hover:not(:focus){border-color:var(--border-hover)}
input:focus,textarea:focus,select:focus{border-color:var(--border-strong);box-shadow:0 0 0 3px var(--ring)}
textarea{resize:vertical;line-height:1.7}
.field-code{display:flex;gap:10px}
.field-code input{flex:1}
.field-code .btn{flex-shrink:0}
label.check{display:flex;align-items:center;gap:8px;color:var(--text-dim);font-size:13px;cursor:pointer}
label.check input{width:auto;accent-color:#d4d4d8}
/* 用 label.switch 而不是 .switch：否则会被上面的 .field label{display:block}
   按优先级盖掉，轨道（span）块级化后宽高失效，开关会塌成一个孤零零的圆点 */
label.switch{display:inline-flex;align-items:center;gap:9px;cursor:pointer;user-select:none;
  position:relative;font-size:14px;line-height:1.4;margin-bottom:0;color:var(--text-dim)}
/* 不能用 display:none，否则键盘 Tab 不到它，也没有焦点环 */
.switch input{position:absolute;width:1px;height:1px;opacity:0;margin:0;pointer-events:none}
.switch .track{width:42px;height:24px;border-radius:12px;background:#26262c;position:relative;
  border:1px solid var(--border-hover);flex-shrink:0;
  transition:background-color .2s,border-color .2s}
.switch .track::after{content:"";position:absolute;top:2px;left:2px;width:18px;height:18px;
  border-radius:50%;background:#8b8b95;box-shadow:0 1px 2px rgba(0,0,0,.5);
  transition:left .2s,background-color .2s}
.switch input:checked + .track{background:var(--accent);border-color:var(--accent)}
.switch input:checked + .track::after{left:20px;background:#fff}
.switch input:focus-visible + .track{outline:2px solid var(--ring);outline-offset:2px}
.switch:hover .track{border-color:var(--border-strong)}
.switch .txt{font-size:14px;color:var(--text-dim);transition:color .18s}
/* 打开时把文字也提亮，一眼能看出状态 */
.switch input:checked ~ .txt{color:var(--text)}

/* ---- 提示 ---- */
.alert{border-radius:12px;padding:13px 16px;font-size:14px;margin-bottom:16px;border:1px solid;line-height:1.7}
.alert-ok{background:rgba(110,231,183,.07);border-color:rgba(110,231,183,.22);color:#a7f3d0}
.alert-err{background:rgba(252,165,165,.07);border-color:rgba(252,165,165,.22);color:#fecaca}
.alert-info{background:var(--accent-soft);border-color:var(--accent-line);color:#dcdbff}
.alert-warn{background:rgba(252,211,77,.07);border-color:rgba(252,211,77,.22);color:#fde68a}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;padding:4px 11px;border-radius:20px;
  background:var(--accent-soft);border:1px solid var(--accent-line);color:var(--accent)}
.badge.gray{background:var(--bg-hover);border-color:var(--border);color:var(--text-dim)}
.badge.ok{background:rgba(110,231,183,.1);border-color:rgba(110,231,183,.28);color:var(--ok)}
.badge.err{background:rgba(252,165,165,.1);border-color:rgba(252,165,165,.28);color:var(--err)}
.badge.warn{background:rgba(252,211,77,.1);border-color:rgba(252,211,77,.28);color:var(--warn)}
.dot{width:6px;height:6px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 8px 0 rgba(125,123,245,.75);display:inline-block}
.spin{width:15px;height:15px;border:2px solid rgba(255,255,255,.2);border-top-color:var(--accent);
  border-radius:50%;animation:spin .7s linear infinite;display:inline-block}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---- 表格 ---- */
.table{width:100%;border-collapse:collapse;font-size:14px}
.table th{text-align:left;color:var(--text-dim);font-weight:500;font-size:13px;
  padding:12px 14px;border-bottom:1px solid var(--border);white-space:nowrap}
.table td{padding:13px 14px;border-bottom:1px solid rgba(255,255,255,.045);color:#b9b9c0}
.table tr:hover td{background:rgba(255,255,255,.025)}
.table .actions{display:flex;gap:8px;flex-wrap:wrap}
.empty{padding:60px 20px;text-align:center;color:var(--text-faint);font-size:14px}

/* ---- 代码 ---- */
pre,code{font-family:ui-monospace,Consolas,"Courier New",monospace}
pre{background:#0b0b0d;border:1px solid var(--border);border-radius:12px;padding:16px 18px;
  overflow-x:auto;font-size:13px;line-height:1.75;color:#c9c9d1}
code:not(pre code){background:var(--bg-hover);border:1px solid var(--border);border-radius:6px;
  padding:2px 6px;font-size:12.5px;color:#e4e4e7}

/* ---- 标签页 ---- */
.tabs{display:flex;gap:6px;border-bottom:1px solid var(--border);margin-bottom:24px;overflow-x:auto}
.tabs a{padding:11px 16px;color:var(--text-dim);font-size:14px;border-bottom:2px solid transparent;
  margin-bottom:-1px;white-space:nowrap}
.tabs a:hover{color:var(--text)}
.tabs a.on{color:var(--text);border-bottom-color:var(--text)}

/* ---- 弹窗 ---- */
.mask{position:fixed;inset:0;background:rgba(0,0,0,.7);backdrop-filter:blur(4px);
  display:flex;align-items:center;justify-content:center;z-index:200;padding:20px;
  animation:fadeIn .16s ease}
.modal{background:var(--bg-soft);border:1px solid var(--border-hover);border-radius:var(--radius-lg);
  padding:26px;width:100%;max-width:440px;box-shadow:var(--shadow-3);
  animation:popIn .18s cubic-bezier(.2,.8,.3,1)}
.modal h3{margin-bottom:10px}
.modal .acts{display:flex;gap:10px;justify-content:flex-end;margin-top:22px}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes popIn{from{opacity:0;transform:translateY(8px) scale(.985)}to{opacity:1;transform:none}}

/* ---- 页脚 ---- */
.footer{border-top:1px solid var(--border);padding:40px 32px;text-align:center;margin-top:60px}
.footer p{color:var(--text-faint);font-size:13px}
.footer a{color:var(--text-dim);margin:0 10px;font-size:13px}
.footer a:hover{color:var(--text)}

/* ---- 错误页 ---- */
.err-page{min-height:calc(100vh - 64px);display:flex;align-items:center;justify-content:center;
  padding:60px 24px;text-align:center}
.err-page .inner{max-width:520px}
/* 大号数字用白→深灰的渐变，比单色更有体积感，又不引入彩色 */
.err-page .code{font-size:112px;font-weight:700;line-height:1;letter-spacing:-.05em;
  background:linear-gradient(180deg,#aaa8ff,#3f3f46);-webkit-background-clip:text;
  background-clip:text;color:transparent;margin-bottom:18px}
.err-page h1{font-size:26px;margin-bottom:12px}
.err-page p{color:var(--text-dim);font-size:15px;margin-bottom:28px;line-height:1.9}
.err-page .acts{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* ---- 认证页 ---- */
.auth{min-height:100vh;display:flex;flex-wrap:wrap}
.auth .left{flex:1 1 420px;display:flex;flex-direction:column;justify-content:center;
  padding:72px 56px;background:var(--bg-soft);
  background-image:radial-gradient(ellipse 70% 50% at 30% 20%,rgba(255,255,255,.07),transparent 70%)}
/* 左上角固定的回首页入口。用 fixed 脱离文档流，不破坏左右分栏布局 */
.auth .back-home{position:fixed;top:22px;left:26px;z-index:10;
  display:inline-flex;align-items:center;gap:6px;font-size:13.5px;color:var(--text-dim);
  padding:7px 13px;border-radius:9px;border:1px solid var(--border);
  background:rgba(9,9,11,.6);backdrop-filter:blur(8px);
  transition:color .18s,border-color .18s,background-color .18s}
.auth .back-home:hover{color:var(--text);border-color:var(--border-hover);background:var(--bg-elev)}
.auth .brand{display:inline-block;font-size:22px;font-weight:650;letter-spacing:-.02em;
  margin-bottom:44px;color:var(--text)}
.auth .brand:hover{color:var(--text)}
.auth .brand span{color:var(--accent)}
.auth .left h1{font-size:42px;line-height:1.2;margin-bottom:20px;max-width:520px}
.auth .left h1 em{color:var(--text-dim);font-style:normal}
.auth .left >p{color:var(--text-dim);font-size:16px;line-height:1.9;max-width:480px;margin-bottom:44px}
.auth .steps-list{list-style:none;max-width:400px}
.auth .steps-list li{display:flex;align-items:center;gap:13px;color:var(--text-dim);
  font-size:14px;margin-bottom:15px}
.auth .steps-list li .n{width:26px;height:26px;border-radius:50%;border:1px solid #2e2e2e;
  display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;
  color:var(--text-faint);flex-shrink:0;transition:all .25s}
.auth .steps-list li.done{color:#c4c4cc}
.auth .steps-list li.done .n{background:var(--blue-soft);border-color:var(--border-strong);color:var(--text)}
.auth .steps-list li.active{color:var(--text)}
.auth .steps-list li.active .n{background:var(--accent);border-color:var(--accent);color:var(--on-accent);
  box-shadow:0 0 16px 0 rgba(125,123,245,.6)}
.auth .right{flex:0 0 420px;display:flex;flex-direction:column;justify-content:center;
  padding:56px 48px;border-left:1px solid var(--border)}
.auth .right h2{font-size:26px;margin-bottom:8px}
.auth .right .tip{color:var(--text-dim);font-size:14px;margin-bottom:30px}
.auth .switch-line{display:flex;align-items:center;justify-content:space-between;
  font-size:14px;margin-top:24px}
.avatar-row{display:flex;align-items:center;gap:18px;margin-bottom:24px}
.avatar-up{width:68px;height:68px;border-radius:50%;background:#1e1e1e;border:1px dashed #3a3a3a;
  display:flex;align-items:center;justify-content:center;color:var(--text-faint);font-size:22px;
  cursor:pointer;overflow:hidden;flex-shrink:0;transition:border-color .2s}
.avatar-up:hover{border-color:var(--blue)}
.avatar-up img{width:100%;height:100%;object-fit:cover}

/* ---- 首页 ---- */
.hero{max-width:1080px;margin:0 auto;padding:88px 32px 64px;display:flex;align-items:center;gap:56px}
.hero .l{flex:1}
.hero h1{font-size:clamp(34px,4.6vw,50px);line-height:1.15;margin-bottom:22px;letter-spacing:-.035em}
.hero h1 span{color:var(--accent)}
.hero p{color:var(--text-dim);font-size:16px;line-height:1.85;max-width:430px;margin-bottom:32px}
.hero .btns{display:flex;gap:14px;flex-wrap:wrap}
.hero .r{flex:1}
.mock{width:100%;background:var(--bg-soft);border:1px solid var(--border);
  border-radius:18px;box-shadow:inset 0 1px 0 rgba(255,255,255,.05),var(--shadow-3);overflow:hidden}
.mock-bar{height:40px;background:rgba(255,255,255,.03);border-bottom:1px solid var(--border);
  display:flex;align-items:center;padding:0 16px;gap:8px}
.mock-bar .d{width:10px;height:10px;border-radius:50%;background:#38383e}
.mock-body{padding:20px;display:flex;flex-direction:column;gap:14px}
.mock-msg{display:flex;gap:10px;align-items:flex-start;max-width:86%}
.mock-msg:not(.ai){margin-left:auto;justify-content:flex-end}
.mock-msg .av{width:28px;height:28px;border-radius:50%;display:flex;align-items:center;
  justify-content:center;font-size:11px;font-weight:700;flex-shrink:0;overflow:hidden;
  background:var(--bg-hover);color:var(--text-dim)}
.mock-msg .av img{width:100%;height:100%;object-fit:cover;display:block}
.mock-msg .bb{background:#f4f4f5;border:1px solid transparent;border-radius:12px;
  padding:10px 14px;font-size:13px;line-height:1.6;color:#131316;word-break:break-word}
.mock-msg.ai .bb{background:var(--accent-soft);border-color:var(--accent-line);color:#e2e1ff}
.mock-line{height:8px;border-radius:4px;background:rgba(255,255,255,.2);width:70%}
.mock-line.s{width:45%;margin-top:8px}

/* ---- 聊天 ---- */
.chat-layout{display:flex;height:calc(100vh - 64px);overflow:hidden}
.chat-side{width:250px;flex-shrink:0;border-right:1px solid var(--border);background:var(--bg-side);
  display:flex;flex-direction:column}
.chat-side .top{padding:16px}
.chat-side .list{flex:1;overflow-y:auto;padding:0 10px 14px}
.chat-side .item{padding:11px 12px;border-radius:10px;color:var(--text-dim);font-size:13.5px;
  cursor:pointer;display:flex;align-items:center;gap:8px;margin-bottom:4px;
  transition:background .18s,color .18s}
.chat-side .item:hover{background:var(--bg-hover);color:var(--text)}
.chat-side .item.on{background:var(--blue-soft);color:var(--text)}
.chat-side .item .t{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chat-side .item .x{opacity:0;color:var(--text-faint);font-size:15px;padding:0 3px;border-radius:5px}
.chat-side .item:hover .x{opacity:1}
.chat-side .item .x:hover{color:var(--err)}
.chat-main{flex:1;display:flex;flex-direction:column;min-width:0}
.chat-head{height:56px;border-bottom:1px solid var(--border);display:flex;align-items:center;
  gap:12px;padding:0 22px;flex-shrink:0}
.chat-body{flex:1;overflow-y:auto;padding:26px 22px}
.msg{display:flex;gap:12px;margin-bottom:22px;max-width:820px;margin-left:auto;margin-right:auto}
.msg .av{width:32px;height:32px;border-radius:9px;flex-shrink:0;display:flex;
  align-items:center;justify-content:center;font-size:12px;font-weight:700;
  background:var(--bg-hover);color:var(--text-dim)}
.msg.ai .av{background:var(--blue-soft);color:var(--text)}
.msg .bb{background:var(--bg-elev);border:1px solid var(--border);border-radius:12px;
  padding:12px 16px;font-size:14.5px;line-height:1.8;color:#dedee3;white-space:pre-wrap;
  word-break:break-word;max-width:calc(100% - 44px)}
.msg.ai .bb{background:var(--bg-soft)}

/* ---- 分享页对话 ---- */
.sh-list{display:flex;flex-direction:column;gap:20px}
.sh-msg{display:flex;gap:10px;align-items:flex-start}
.sh-msg.me{justify-content:flex-end}
.sh-msg .sh-av{width:32px;height:32px;border-radius:50%;flex-shrink:0;overflow:hidden}
.sh-msg .sh-av img{width:100%;height:100%;object-fit:cover;display:block}
.sh-msg .sh-body{display:flex;flex-direction:column;max-width:82%;min-width:0}
.sh-msg.me .sh-body{align-items:flex-end}
.sh-msg .sh-who{font-size:12px;color:var(--text-faint);margin-bottom:6px}
.sh-msg .sh-text{font-size:14.5px;line-height:1.8;padding:10px 14px;border-radius:14px;
  white-space:pre-wrap;word-break:break-word;background:var(--bg-elev);
  border:1px solid var(--border);color:#dedee3}
.sh-msg.me .sh-text{background:#f4f4f5;border-color:transparent;color:#131316}
.sh-msg.ai .sh-text{background:var(--accent-soft);border-color:var(--accent-line);color:#e2e1ff}
/* 分享页同样限制消息里的图片宽度 */
.sh-msg .sh-text img{display:block;max-width:100%;height:auto;border-radius:12px;margin:8px 0 2px}
.chat-input{border-top:1px solid var(--border);padding:16px 22px 20px;flex-shrink:0}
.chat-input .box{max-width:820px;margin:0 auto;background:var(--bg-elev);border:1px solid var(--border);
  border-radius:16px;padding:14px 16px;transition:border-color .25s,box-shadow .25s}
.chat-input .box:focus-within{border-color:var(--accent-line);
  box-shadow:0 0 0 3px rgba(125,123,245,.14)}
.chat-input textarea{background:transparent;border:none;padding:0;min-height:52px;max-height:180px;
  box-shadow:none!important}
.chat-input .bar{display:flex;align-items:center;gap:10px;margin-top:10px}
.chat-input .bar .btn{margin-left:auto}
.tool-btn{display:inline-flex;align-items:center;gap:7px;background:var(--bg-elev);
  border:1px solid var(--border);border-radius:9px;padding:7px 14px;color:var(--text-dim);
  font-size:13px;cursor:pointer;font-family:inherit;transition:all .2s}
.tool-btn:hover{background:var(--bg-hover);color:var(--text);border-color:var(--border-hover)}
.tool-btn .d{width:6px;height:6px;border-radius:50%;background:#4a4a52;transition:all .2s}
.tool-btn.on{border-color:var(--accent-line);color:#fff;background:var(--accent-soft)}
.tool-btn.on .d{background:var(--accent);box-shadow:0 0 8px 0 rgba(125,123,245,.85)}
.typing span{display:inline-block;width:6px;height:6px;margin-right:4px;border-radius:50%;
  background:#6a6a72;animation:blink 1.2s infinite}
.typing span:nth-child(2){animation-delay:.2s}
.typing span:nth-child(3){animation-delay:.4s}
@keyframes blink{0%,60%,100%{opacity:.25}30%{opacity:1}}

/* ---- 管理后台 ---- */
.admin{display:flex;min-height:calc(100vh - 64px)}
.admin .side{width:212px;flex-shrink:0;border-right:1px solid var(--border);
  background:var(--bg-side);padding:20px 12px}
.admin .side .grp{color:var(--text-faint);font-size:11.5px;letter-spacing:1px;
  padding:14px 12px 8px;text-transform:uppercase}
.admin .side a{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:9px;
  color:var(--text-dim);font-size:14px;margin-bottom:3px;transition:all .18s}
.admin .side a:hover{background:var(--bg-hover);color:var(--text)}
.admin .side a.on{background:var(--blue-soft);color:var(--text)}
.admin .main{flex:1;padding:28px 32px 60px;min-width:0}
.admin .main h1{font-size:22px;margin-bottom:6px}
.admin .main .sub{color:var(--text-dim);font-size:14px;margin-bottom:26px}
.bar-chart{display:flex;align-items:flex-end;gap:14px;height:170px;padding:0 4px}
.bar-chart .col{flex:1;display:flex;flex-direction:column;align-items:center;gap:8px;height:100%}
/* 柱子用白→灰渐变，靠明度区分高低，不用彩色 */
.bar-chart .bar{width:100%;max-width:42px;border-radius:7px 7px 0 0;
  background:linear-gradient(180deg,#e4e4e7,#52525b);min-height:4px;margin-top:auto;
  transition:height .5s ease}
.bar-chart .lbl{color:var(--text-faint);font-size:11.5px;white-space:nowrap}

/* ---- 响应式 ---- */
@media(max-width:1000px){
  .hero{flex-direction:column;gap:36px;padding:56px 24px 40px}
  .hero h1{font-size:34px}
  .auth .left,.auth .right{flex:none;width:100%;border-left:none;padding:48px 32px}
  .auth .right{border-top:1px solid #181818}
  .auth .left h1{font-size:32px}
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
  .admin .side{width:64px;padding:16px 8px}
  .admin .side a{justify-content:center;padding:11px 0;font-size:0}
  .admin .side a i,.admin .side a .ic{font-size:16px}
  .admin .side .grp{display:none}
  .admin .main{padding:20px 16px 50px}
}
@media(max-width:720px){
  .nav{padding:0 16px;gap:14px}
  .nav .links{display:none}
  .nav-toggle{display:block}
  .nav.open{flex-wrap:wrap;height:auto;padding:10px 16px 16px}
  .nav.open .links{display:flex;flex-direction:column;gap:12px;width:100%;order:5;padding-top:6px}
  .wrap,.wrap-sm{padding:0 18px}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .chat-side{position:fixed;left:0;top:64px;bottom:0;z-index:150;
    transform:translateX(-100%);transition:transform .25s;box-shadow:0 0 40px rgba(0,0,0,.6)}
  .chat-side.open{transform:translateX(0)}
  .err-page .code{font-size:78px}
  .table th,.table td{padding:10px 10px;font-size:13px}
}

/* ---- 管理后台：表格状态 / 分页 / 图表 ---- */
.adm-loading,.adm-empty{padding:34px 16px!important;text-align:center;
  color:var(--text-faint);font-size:13.5px}
.adm-err{color:var(--err)}
.adm-loading .spin{vertical-align:-3px;margin-right:6px;
  border-color:rgba(255,255,255,.2);border-top-color:var(--accent)}
.adm-pager{display:flex;align-items:center;justify-content:space-between;
  gap:12px;flex-wrap:wrap;padding:14px 4px 0}
.adm-total{color:var(--text-dim);font-size:13px}
.adm-pager-btns{display:flex;gap:8px;flex-wrap:wrap}
.adm-chart{display:flex;align-items:flex-end;gap:6px;padding:6px 2px 0}
.adm-col{flex:1;min-width:0;display:flex;flex-direction:column;align-items:center;
  height:100%;justify-content:flex-end;gap:7px}
.adm-bar{width:100%;max-width:46px;border-radius:6px 6px 0 0;min-height:2px;
  background:linear-gradient(180deg,#8b89ff,#4a48c9);transition:height .4s ease}
.adm-col:hover .adm-bar{background:linear-gradient(180deg,#a9a7ff,#5f5de0)}
.adm-lbl{color:var(--text-faint);font-size:11px;white-space:nowrap;height:14px}
.adm-toolbar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  margin-bottom:18px}
.adm-toolbar input[type=text],.adm-toolbar select{width:auto;min-width:130px;
  padding:8px 12px;font-size:13px}
.adm-kv{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}
.adm-kv .item{background:var(--bg-elev);border:1px solid var(--border);border-radius:11px;
  padding:13px 15px}
.adm-kv .item .k{color:var(--text-dim);font-size:12.5px;margin-bottom:6px}
.adm-kv .item .v{color:var(--text);font-size:14px;word-break:break-all}
.adm-drawer{position:fixed;top:0;right:0;bottom:0;width:min(560px,92vw);z-index:300;
  background:var(--bg-soft);border-left:1px solid var(--border);overflow-y:auto;padding:24px;
  box-shadow:-30px 0 70px -30px rgba(0,0,0,.95)}
.adm-drawer h3{margin-bottom:4px}
.adm-drawer .sub{color:var(--text-dim);font-size:13px;margin-bottom:18px}
.adm-drawer .sec{margin-top:22px}
.adm-drawer .sec h4{font-size:14px;color:var(--text);margin-bottom:10px}

/* ---- 尊重系统的"减少动态效果"设置 ---- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms!important;animation-iteration-count:1!important;
    transition-duration:.001ms!important;
  }
  .card.hoverable:hover{transform:none}
  .btn-primary:hover:not(:disabled){transform:none}
}