/* ==========================================================================
   ai.css · AI 浮标 + AI 配置页
   --------------------------------------------------------------------------
   视觉沿用平台设计系统（蓝青渐变 / 白底 / 10px 圆角 / 轻阴影）。
   浮标与面板的层级：内容 < 浮标 8002 / 面板 8000 < 弹窗 9000 < 提示条 9500。
   ========================================================================== */

/* ============================================================ 一、浮标 */
.aiw-root[hidden]{display:none}

.aiw-fab{
  position:fixed;right:24px;bottom:24px;z-index:8002;
  display:flex;align-items:center;gap:8px;
  height:56px;min-width:56px;padding:0 15px;
  border:0;border-radius:28px;cursor:pointer;
  background:linear-gradient(135deg,#1d4ed8 0%,#2563eb 46%,#06b6d4 100%);
  color:#fff;box-shadow:0 10px 26px rgba(29,78,216,.34),0 3px 8px rgba(16,32,64,.16);
  transition:transform .18s ease,box-shadow .18s ease,padding .18s ease;
  touch-action:none;user-select:none;-webkit-user-select:none;
}
.aiw-fab:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(29,78,216,.4),0 4px 10px rgba(16,32,64,.18)}
.aiw-fab.pressing{transform:scale(.95)}
.aiw-fab.drag{transition:none;cursor:grabbing;transform:none}
.aiw-fab-ico{display:flex;width:26px;height:26px;flex:none}
.aiw-fab-ico svg{width:26px;height:26px}
.aiw-fab-txt{
  max-width:0;opacity:0;overflow:hidden;white-space:nowrap;
  font:600 13.5px/1 var(--font);letter-spacing:.3px;
  transition:max-width .2s ease,opacity .16s ease;
}
.aiw-fab:hover .aiw-fab-txt{max-width:90px;opacity:1}
.aiw-fab.active{background:linear-gradient(135deg,#1e40af,#0e7490)}
.aiw-fab-badge{display:none}

/* 浮标呼吸光点：提示「这里随时能问」 */
.aiw-fab::after{
  content:"";position:absolute;right:9px;top:9px;width:7px;height:7px;border-radius:50%;
  background:#34d399;box-shadow:0 0 0 3px rgba(52,211,153,.28);
  animation:aiwPulse 2.6s ease-in-out infinite;
}
.aiw-fab.active::after{display:none}
@keyframes aiwPulse{0%,100%{box-shadow:0 0 0 3px rgba(52,211,153,.26)}50%{box-shadow:0 0 0 6px rgba(52,211,153,.05)}}

/* ============================================================ 二、面板 */
.aiw-panel[hidden]{display:none}
.aiw-panel{
  position:fixed;z-index:8000;width:404px;
  height:min(646px,calc(100vh - 116px));
  display:flex;flex-direction:column;overflow:hidden;
  background:#fff;border:1px solid var(--line);border-radius:18px;
  box-shadow:0 28px 72px rgba(16,32,64,.22),0 8px 22px rgba(16,32,64,.08);
  animation:aiwIn .18s cubic-bezier(.2,.8,.3,1);
}
@keyframes aiwIn{from{opacity:0;transform:translateY(10px) scale(.98)}to{opacity:1;transform:none}}

.aiw-hd{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  padding:13px 14px 12px;border-bottom:1px solid var(--line2);
  background:linear-gradient(135deg,#f7faff 0%,#f2fbff 100%);
}
.aiw-hd-l{display:flex;align-items:center;gap:10px;min-width:0}
.aiw-orb{
  width:32px;height:32px;flex:none;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:var(--grad);color:#fff;box-shadow:0 4px 12px rgba(37,99,235,.28);
}
.aiw-orb svg{width:17px;height:17px}
.aiw-hd-t{display:flex;flex-direction:column;gap:2px;min-width:0}
.aiw-hd-t b{font-size:14px;color:var(--t1);letter-spacing:.2px}
.aiw-hd-t span{font-size:11px;color:var(--t3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:190px}
.aiw-hd-r{display:flex;gap:2px;flex:none}
.aiw-ico-btn{
  width:29px;height:29px;border:0;border-radius:8px;background:transparent;color:var(--t2);
  display:flex;align-items:center;justify-content:center;cursor:pointer;transition:background .15s,color .15s;
}
.aiw-ico-btn:hover{background:rgba(37,99,235,.08);color:var(--c-primary)}
.aiw-ico-btn svg{width:15px;height:15px}

.aiw-ctx{
  display:flex;align-items:center;gap:6px;padding:7px 14px;
  background:#fbfdff;border-bottom:1px solid var(--line2);
  font-size:11.5px;color:var(--t3);
}
.aiw-ctx-dot{width:5px;height:5px;border-radius:50%;background:#10b981;flex:none}
#aiw-ctx-t{flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.aiw-kb{
  flex:none;padding:1px 7px;border-radius:999px;font-size:10.5px;
  background:#eef3fa;color:var(--t3);border:1px solid var(--line);
}
.aiw-kb.ok{background:#ecfdf5;color:#047857;border-color:#a7f3d0}
.aiw-kb.warn{background:#fffbeb;color:#b45309;border-color:#fde68a}

/* ------------------------------------------------------------ 消息区 */
.aiw-body{
  flex:1;min-height:0;overflow-y:auto;overscroll-behavior:contain;
  padding:14px;display:flex;flex-direction:column;gap:13px;
  background:#fff;
}
.aiw-body::-webkit-scrollbar{width:6px}
.aiw-body::-webkit-scrollbar-thumb{background:#dfe7f3;border-radius:3px}

.aiw-msg{display:flex;flex-direction:column;gap:4px;max-width:92%}
.aiw-msg.me{align-self:flex-end;align-items:flex-end}
.aiw-bubble{
  padding:9px 12px;border-radius:12px 12px 12px 4px;
  background:#f4f7fc;border:1px solid var(--line2);
  font-size:13px;line-height:1.72;color:var(--t1);word-break:break-word;
}
.aiw-msg.me .aiw-bubble{
  background:var(--grad);border-color:transparent;color:#fff;
  border-radius:12px 12px 4px 12px;box-shadow:0 4px 12px rgba(37,99,235,.2);
}
.aiw-meta{display:flex;align-items:center;gap:8px;font-size:10.5px;color:var(--t4);padding-left:2px}
.aiw-refs{padding:0 6px;border-radius:999px;background:#f1f5fb;border:1px solid var(--line2);color:var(--t3);font-size:10px}
.aiw-copy{
  border:0;background:transparent;color:var(--t4);cursor:pointer;padding:1px;display:flex;border-radius:4px;
}
.aiw-copy:hover{color:var(--c-primary);background:rgba(37,99,235,.07)}
.aiw-copy svg{width:12px;height:12px}

/* 空态 */
.aiw-empty{display:flex;flex-direction:column;align-items:center;text-align:center;padding:14px 6px 4px;gap:8px}
.aiw-empty-orb{
  width:52px;height:52px;border-radius:16px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#eff6ff,#ecfeff);color:var(--c-primary);
  border:1px solid #dbeafe;box-shadow:0 8px 20px rgba(37,99,235,.1);
}
.aiw-empty-orb svg{width:26px;height:26px}
.aiw-empty-t{font-size:14px;font-weight:700;color:var(--t1)}
.aiw-empty-d{font-size:12px;color:var(--t2);line-height:1.7;max-width:280px}
.aiw-sugs{display:flex;flex-direction:column;gap:7px;width:100%;margin-top:4px}
.aiw-sug{
  display:flex;align-items:center;justify-content:space-between;gap:8px;text-align:left;
  padding:9px 11px;border-radius:10px;border:1px solid var(--line);
  background:#fbfdff;color:var(--t1);font:500 12.5px/1.5 var(--font);cursor:pointer;
  transition:border-color .15s,background .15s,transform .15s;
}
.aiw-sug:hover{border-color:#bfdbfe;background:#f2f8ff;transform:translateX(2px)}
.aiw-sug i{font-style:normal;color:var(--c-primary);flex:none}
.aiw-note{
  display:flex;gap:7px;align-items:flex-start;margin-top:10px;padding:9px 10px;border-radius:9px;
  background:#f8fafc;border:1px dashed var(--line);color:var(--t3);font-size:11px;line-height:1.6;text-align:left;
}
.aiw-note svg{width:13px;height:13px;flex:none;margin-top:1px;color:var(--t3)}

/* 输入中 */
.aiw-typing{display:flex;gap:4px;align-items:center;padding:12px 14px}
.aiw-typing i{width:6px;height:6px;border-radius:50%;background:#93a7c4;animation:aiwDot 1.1s infinite ease-in-out}
.aiw-typing i:nth-child(2){animation-delay:.15s}
.aiw-typing i:nth-child(3){animation-delay:.3s}
@keyframes aiwDot{0%,80%,100%{transform:translateY(0);opacity:.45}40%{transform:translateY(-4px);opacity:1}}
.aiw-caret{display:inline-block;width:7px;height:14px;margin-left:2px;vertical-align:-2px;background:var(--c-primary);border-radius:1px;animation:aiwCaret .9s steps(2) infinite}
@keyframes aiwCaret{0%,100%{opacity:1}50%{opacity:0}}

/* 失败与中断提示（不写入会话历史，带「重试 / 忽略」）
   说明：这里刻意不用 chat 气泡样式 —— 它不是一个「回答」，而是通道故障的
   提示条，视觉上要和 AI 的正文一眼区分开，否则用户会把它当答案复制走。 */
.aiw-fail{
  max-width:92%;padding:10px 12px;border-radius:12px;
  background:#fff7ed;border:1px solid #fed7aa;color:#9a3412;
  font-size:12.5px;line-height:1.65;
}
.aiw-fail-t{font-weight:600}
.aiw-fail-p{margin-top:3px;font-size:11.5px;color:#b45309}
.aiw-fail-a{display:flex;gap:8px;margin-top:8px}
.aiw-fail-btn{
  display:inline-flex;align-items:center;gap:4px;
  padding:4px 10px;border-radius:8px;border:1px solid #fdba74;background:#ffedd5;
  color:#9a3412;font:600 11.5px/1.4 var(--font);cursor:pointer;transition:all .15s;
}
.aiw-fail-btn:hover{background:#fed7aa}
.aiw-fail-btn svg{width:12px;height:12px}
.aiw-fail-btn.ghost{background:transparent;border-color:#fdba74;color:#b45309;font-weight:500}
.aiw-fail-btn.ghost:hover{background:#ffedd5}

/* ------------------------------------------------------------ 输入区 */
.aiw-ft{padding:9px 12px 10px;border-top:1px solid var(--line2);background:#fff}
.aiw-chips{display:flex;gap:6px;overflow-x:auto;padding-bottom:8px;scrollbar-width:none}
.aiw-chips::-webkit-scrollbar{display:none}
.aiw-chip{
  flex:none;padding:4px 9px;border-radius:999px;border:1px solid var(--line);
  background:#f8fafd;color:var(--t2);font:500 11px/1.5 var(--font);cursor:pointer;white-space:nowrap;
  transition:all .15s;
}
.aiw-chip:hover{border-color:#bfdbfe;background:#eff6ff;color:var(--c-primary)}

.aiw-in{display:flex;align-items:flex-end;gap:8px}
.aiw-in textarea{
  flex:1;min-height:40px;max-height:120px;resize:none;padding:10px 12px;
  border:1px solid var(--line);border-radius:12px;background:#fbfdff;color:var(--t1);
  font:400 13px/1.55 var(--font);outline:none;transition:border-color .15s,box-shadow .15s;
}
.aiw-in textarea:focus{border-color:#93c5fd;box-shadow:0 0 0 3px rgba(37,99,235,.1);background:#fff}
.aiw-in textarea:disabled{background:#f4f6fa;color:var(--t4);cursor:not-allowed}
.aiw-send{
  width:40px;height:40px;flex:none;border:0;border-radius:12px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;color:#fff;
  background:var(--grad);box-shadow:0 6px 16px rgba(37,99,235,.28);
  transition:transform .15s,box-shadow .15s;
}
.aiw-send:hover{transform:translateY(-1px);box-shadow:0 9px 20px rgba(37,99,235,.34)}
.aiw-send svg{width:17px;height:17px}
.aiw-send.stopping{background:linear-gradient(135deg,#e11d48,#f43f5e);box-shadow:0 6px 16px rgba(244,63,94,.3)}
.aiw-tip{display:flex;justify-content:space-between;gap:8px;margin-top:6px;font-size:10px;color:var(--t4)}
.aiw-tip-r{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;text-align:right}

/* ------------------------------------------------------ Markdown 排版 */
.aiw-md .ai-p{margin:5px 0}
.aiw-md .ai-p:first-child{margin-top:0}
.aiw-md .ai-h1{font-size:15px;font-weight:700;margin:10px 0 5px;color:var(--t1)}
.aiw-md .ai-h2{font-size:14px;font-weight:700;margin:9px 0 4px;color:var(--t1)}
.aiw-md .ai-h3{font-size:13.2px;font-weight:700;margin:8px 0 4px;color:var(--t1)}
.aiw-md .ai-h4{font-size:13px;font-weight:600;margin:7px 0 3px;color:var(--t2)}
.aiw-md .ai-list{margin:4px 0;padding-left:18px}
.aiw-md .ai-list li{margin:2px 0}
.aiw-md .ai-code{padding:1px 5px;border-radius:4px;background:rgba(37,99,235,.08);font-family:var(--mono);font-size:12px}
.aiw-md .ai-pre{margin:7px 0;padding:9px 11px;border-radius:8px;background:#0f172a;color:#e2e8f0;overflow-x:auto;font-size:12px;line-height:1.6}
.aiw-md .ai-pre code{font-family:var(--mono);white-space:pre}
.aiw-md .ai-quote{margin:6px 0;padding:5px 10px;border-left:3px solid #bfdbfe;background:#f8fbff;color:var(--t2);border-radius:0 6px 6px 0}
.aiw-md a{color:#2563eb;text-decoration:underline}
.aiw-table-wrap{overflow-x:auto;margin:8px 0}
.ai-table{border-collapse:collapse;width:100%;font-size:11.8px;background:#fff}
.ai-table th,.ai-table td{border:1px solid var(--line);padding:5px 7px;text-align:left;vertical-align:top}
.ai-table th{background:#f2f7ff;font-weight:600;color:var(--t1);white-space:nowrap}
.ai-table tr:nth-child(even) td{background:#fafcff}
.aiw-msg.me .ai-table{color:var(--t1)}

/* ============================================================ 三、配置页 */
.aic{display:flex;flex-direction:column;gap:14px}

.aic-hero{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:15px 18px;border-radius:var(--r2);border:1px solid #dbeafe;
  background:linear-gradient(135deg,#f4f9ff 0%,#f0fdff 100%);
}
.aic-hero-l{display:flex;align-items:center;gap:13px;min-width:0}
.aic-hero-ico{
  width:42px;height:42px;flex:none;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--grad);color:#fff;box-shadow:0 8px 18px rgba(37,99,235,.24);font:700 15px/1 var(--font);
}
.aic-hero-t{display:flex;flex-direction:column;gap:4px}
.aic-hero-t b{font-size:15px;color:var(--t1)}
.aic-hero-t span{font-size:12px;color:var(--t2)}
.aic-badges{display:flex;gap:6px;flex-wrap:wrap;margin-top:2px}
.aic-badge{
  display:inline-flex;align-items:center;gap:4px;padding:2px 8px;border-radius:999px;
  font-size:11px;border:1px solid transparent;
}
.aic-badge.ok{background:#ecfdf5;color:#047857;border-color:#a7f3d0}
.aic-badge.warn{background:#fffbeb;color:#b45309;border-color:#fde68a}
.aic-badge.info{background:#eff6ff;color:#1d4ed8;border-color:#bfdbfe}
.aic-badge.mute{background:#f1f5f9;color:var(--t2);border-color:var(--line)}
.aic-badge i{width:5px;height:5px;border-radius:50%;background:currentColor;display:inline-block}

.aic-hero-r{display:flex;gap:8px;flex-wrap:wrap}

.aic-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}
.aic-stat{
  padding:12px 14px;border-radius:var(--r);border:1px solid var(--line);background:#fff;
  display:flex;flex-direction:column;gap:3px;
}
.aic-stat span{font-size:11.5px;color:var(--t3)}
.aic-stat b{font-size:16px;color:var(--t1);font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.aic-stat i{font-size:11px;color:var(--t3);font-style:normal;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* 五家服务商一排放不下时，宁可 3+2 也不留「孤零零最后一张」：
   按视口宽度切 5 / 3 / 2 / 1 列（auto-fit 在 4 列时会剩一张单独成行）。 */
.aic-providers{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px;align-items:stretch}
.aic-prov{
  position:relative;text-align:left;padding:12px 13px 13px;border-radius:10px;border:1.5px solid var(--line);
  background:#fff;cursor:pointer;transition:all .16s;display:flex;flex-direction:column;gap:4px;
  min-height:120px;
}
.aic-prov:hover{border-color:#bfdbfe;background:#fafdff}
.aic-prov.on{border-color:var(--c-primary);background:#f5f9ff;box-shadow:0 0 0 3px rgba(37,99,235,.09)}
.aic-prov b{
  font-size:13px;color:var(--t1);line-height:1.35;padding-right:20px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.aic-prov em{
  align-self:flex-start;font-style:normal;font-size:10.5px;font-weight:600;color:var(--c-primary);
  background:#eff6ff;border:1px solid #dbeafe;border-radius:999px;padding:1px 7px;line-height:1.6;margin-top:1px;
}
.aic-prov>span:last-child{
  font-size:11px;color:var(--t3);line-height:1.55;margin-top:2px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.aic-prov .tick{
  position:absolute;right:9px;top:9px;width:16px;height:16px;border-radius:50%;
  background:var(--c-primary);color:#fff;display:none;align-items:center;justify-content:center;font-size:10px;
}
.aic-prov.on .tick{display:flex}

.aic-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:12px}
.aic-fields{display:grid;grid-template-columns:1fr 1fr;gap:12px 14px}
.aic-fields .f-item{display:flex;flex-direction:column;gap:5px;min-width:0}
.aic-fields .f-item>span{font-size:12px;color:var(--t2);display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.aic-fields .f-item>span b#aic-temp-v{color:var(--t1);font-family:var(--mono)}
.aic-fields .f-item.full{grid-column:1 / -1}
.aic-fields .ipt{width:100%}
.aic-key{display:flex;gap:7px}
.aic-key .ipt{flex:1;font-family:var(--mono);letter-spacing:.4px}
.aic-key .btn{flex:none}
.aic-hint{font-size:11px;color:var(--t3);line-height:1.6}

.aic-range{display:flex;align-items:center;height:32px}
.aic-range input[type=range]{flex:1;width:100%;accent-color:var(--c-primary)}
.aic-temp-t{
  font-style:normal;font-size:10.5px;font-weight:600;line-height:1.6;padding:0 7px;border-radius:999px;
  background:#eff6ff;color:#1d4ed8;border:1px solid #dbeafe;
}
.aic-switch{flex-direction:row!important;align-items:center;gap:9px;padding-top:2px}
.aic-switch input{width:15px;height:15px;flex:none;accent-color:var(--c-primary)}
.aic-switch span{font-size:12px;color:var(--t2)}

.aic-actions{display:flex;align-items:center;gap:9px;flex-wrap:wrap;padding-top:2px}
.aic-actions .sp{flex:1}

.aic-test{
  margin-top:2px;padding:11px 13px;border-radius:10px;font-size:12.5px;line-height:1.7;
  border:1px solid var(--line);background:#fbfdff;color:var(--t2);
}
.aic-test.ok{border-color:#a7f3d0;background:#f0fdf7;color:#065f46}
.aic-test.err{border-color:#fecdd3;background:#fff5f6;color:#9f1239}
.aic-test b{font-weight:700}
.aic-test .mono{font-family:var(--mono);font-size:11.5px}

/* 未配置时的开通指引（审计 P0-09：出厂不带密钥，得让运维一眼看到怎么配） */
.aic-setup-ol{margin:0 0 10px;padding-left:20px;font-size:12.5px;line-height:1.85;color:var(--t2)}
.aic-setup-ol li{margin-bottom:2px}
.aic-setup-ol code,.aic-setup-ol .mono{font-family:var(--mono);font-size:11.5px;background:#f1f5fb;padding:1px 5px;border-radius:5px}

.aic-kb-head{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;margin-bottom:9px}
.aic-kb-head b{font-size:13px;color:var(--t1)}
.aic-kb-head span{font-size:11.5px;color:var(--t3)}
.aic-kb-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(206px,1fr));gap:8px}
.aic-kb-item{
  display:flex;align-items:center;justify-content:space-between;gap:8px;min-width:0;
  padding:8px 11px;border-radius:8px;background:#f8fafd;border:1px solid var(--line2);
  font-size:11.5px;color:var(--t2);
}
.aic-kb-item b{font-weight:600;font-size:12px;color:var(--t1);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}
.aic-kb-item span{
  flex:none;color:var(--t3);font-family:var(--mono);font-size:10.5px;
  background:#fff;border:1px solid var(--line2);border-radius:999px;padding:0 6px;
}

.aic-guide{margin-top:10px;border:1px solid var(--line2);border-radius:10px;background:#fbfdff;overflow:hidden}
.aic-guide summary{
  cursor:pointer;padding:9px 12px;font-size:12.5px;font-weight:600;color:var(--t2);
  list-style:none;display:flex;align-items:center;gap:7px;
}
.aic-guide summary::-webkit-details-marker{display:none}
.aic-guide summary::before{content:"›";font-size:15px;color:var(--t3);transition:transform .15s}
.aic-guide[open] summary::before{transform:rotate(90deg)}
.aic-guide .aic-guide-body{padding:2px 13px 12px;border-top:1px solid var(--line2)}
.aic-table{width:100%;border-collapse:collapse;font-size:12px}
.aic-table th,.aic-table td{border:1px solid var(--line2);padding:6px 9px;text-align:left}
.aic-table th{background:#f4f8fd;font-weight:600;color:var(--t2)}

/* AI 完整页面：消息区加高，参考资料条 */
.ai-page .ai-msgs{max-height:520px}
.ai-src{
  display:flex;flex-wrap:wrap;gap:5px;margin-top:6px;
}
.ai-src span{
  padding:1px 7px;border-radius:999px;background:#f1f5fb;border:1px solid var(--line2);
  color:var(--t3);font-size:10.5px;
}
.ai-page .ai-preset-chips .btn{max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ====================================================== 三、AI 页面视觉（第四十一轮）
   之前这页只有一张白卡 + 一个输入框，看起来像「后台调试面板」。这里给它三件东西：
   一句「它能干什么」（hero）、一个像对话框的容器（shell）、一组可以直接点的问题（starters）。
   不引入任何图片资源：全部用渐变 + SVG，离线部署与打印都不会掉图。 */
.ai-hero{
  display:flex;align-items:center;gap:16px;padding:18px 20px;margin-bottom:14px;
  border-radius:16px;border:1px solid #f0dfe8;overflow:hidden;position:relative;
  background:
    radial-gradient(120% 140% at 100% 0%,rgba(124,92,255,.12) 0%,rgba(124,92,255,0) 62%),
    linear-gradient(120deg,#fff7fa 0%,#fbf8ff 52%,#f7f6ff 100%);
}
.ai-hero::after{
  content:"";position:absolute;right:-40px;top:-60px;width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(225,29,72,.10),rgba(225,29,72,0) 70%);pointer-events:none;
}
.ai-hero-l{display:flex;align-items:flex-start;gap:14px;min-width:0;flex:1}
.ai-hero-badge{
  width:52px;height:52px;flex:none;border-radius:15px;color:#fff;
  display:flex;align-items:center;justify-content:center;
  background:var(--grad);
  box-shadow:0 10px 22px rgba(225,29,72,.24),inset 0 1px 0 rgba(255,255,255,.30);
}
.ai-hero-t{min-width:0}
.ai-hero-t h2{margin:0 0 4px;font-size:18px;font-weight:700;color:var(--t1);letter-spacing:.2px}
.ai-hero-t p{margin:0;font-size:12.5px;line-height:1.7;color:var(--t2);max-width:640px}
.ai-hero-chips{display:flex;flex-wrap:wrap;gap:7px;margin-top:9px}
.ai-hchip{
  display:inline-flex;align-items:center;gap:5px;padding:3px 10px;border-radius:999px;
  background:rgba(255,255,255,.86);border:1px solid #f0dfe8;font-size:11px;color:var(--t2);
}
.ai-hchip i{font-style:normal;color:var(--t3)}
.ai-hero-r{flex:none;text-align:right;display:flex;flex-direction:column;align-items:flex-end;gap:6px}
.ai-state{
  display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:999px;
  font-size:11.5px;font-weight:600;background:#fff;border:1px solid var(--line2);color:var(--t3);
}
.ai-state i{width:7px;height:7px;border-radius:50%;background:#94a3b8}
.ai-state.on{color:#0f7b4f;border-color:#c9ecdb;background:#f2fbf6}
.ai-state.on i{background:#16a34a;box-shadow:0 0 0 3px rgba(22,163,74,.14)}
.ai-hero-model{font-size:11px;color:var(--t3);max-width:280px;text-align:right;line-height:1.5}

/* 对话容器：头部一条、消息区、底部输入区，三段用不同底色分开 */
.ai-shell{
  border:1px solid var(--line);border-radius:16px;background:#fff;overflow:hidden;
  box-shadow:0 2px 4px rgba(16,32,64,.04),0 12px 32px rgba(16,32,64,.06);
}
.ai-shell-hd{
  display:flex;align-items:center;gap:9px;padding:11px 16px;
  border-bottom:1px solid var(--line2);background:linear-gradient(180deg,#fbfdff,#f7fafd);
}
.ai-shell-hd b{font-size:13px;color:var(--t1)}
.ai-shell-dot{width:7px;height:7px;border-radius:50%;background:#cbd5e1;flex:none}
.ai-shell-dot.on{background:#16a34a;box-shadow:0 0 0 3px rgba(22,163,74,.13)}
.ai-shell-meta{font-size:11px;color:var(--t3);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ai-clear{color:var(--t3)}
.ai-shell .ai-msgs{
  max-height:none;min-height:380px;height:calc(100vh - 470px);padding:16px 18px;
  background:linear-gradient(180deg,#fcfdff 0%,#fff 46%);
}
/* 输入区：整块淡底 + 上方细分隔线，视觉上从「页面」收束成「输入台」 */
.ai-composer{padding:10px 16px 12px;border-top:1px solid var(--line2);background:#fbfcfe}
.ai-composer .ai-preset-chips{margin:0 0 8px}
.ai-composer .ai-input-row{align-items:stretch;gap:10px}
.ai-composer .ai-input-row textarea{
  min-height:64px;border-radius:12px;padding:11px 13px;font-size:13.5px;line-height:1.65;
  background:#fff;border:1px solid var(--line);transition:border-color .15s,box-shadow .15s;
}
.ai-composer .ai-input-row textarea:focus{
  outline:none;border-color:#f0a9bf;box-shadow:0 0 0 3px rgba(225,29,72,.10);
}
.ai-send{
  align-self:stretch;min-width:96px;border-radius:12px;font-weight:600;
  background:var(--grad);
  border:0;box-shadow:0 6px 16px rgba(225,29,72,.22);
}
.ai-send:hover{filter:brightness(1.04)}
.ai-send:disabled{background:#c7d2e4;box-shadow:none;filter:none}
.ai-foot{display:flex;justify-content:space-between;gap:10px;margin-top:8px;font-size:10.8px;color:var(--t4,#94a3b8);flex-wrap:wrap}
.ai-foot kbd{
  font-family:var(--mono);font-size:10px;padding:1px 5px;border-radius:4px;
  background:#fff;border:1px solid var(--line2);color:var(--t3);
}

/* 欢迎态：三张问题卡 */
.ai-welcome{
  text-align:center;padding:18px 6px 6px;min-height:100%;
  display:flex;flex-direction:column;justify-content:center;
}
.ai-welcome-ic{
  width:56px;height:56px;margin:0 auto 12px;border-radius:18px;color:#fff;
  display:flex;align-items:center;justify-content:center;
  background:var(--grad);
  box-shadow:0 12px 26px rgba(225,29,72,.20);
}
.ai-welcome h3{margin:0 0 6px;font-size:16px;color:var(--t1)}
.ai-welcome p{margin:0 auto;max-width:520px;font-size:12.5px;line-height:1.75;color:var(--t2)}
.ai-starters{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;
  max-width:760px;margin:18px auto 6px;text-align:left;
}
.ai-starter{
  display:flex;align-items:flex-start;gap:10px;padding:12px 13px;border-radius:12px;cursor:pointer;
  background:#fff;border:1px solid var(--line2);text-align:left;transition:all .16s ease;
}
.ai-starter:hover{border-color:#f4c2d2;background:#fffafb;transform:translateY(-1px);box-shadow:0 8px 20px rgba(225,29,72,.09)}
.ai-starter .ic{
  width:28px;height:28px;flex:none;border-radius:9px;display:flex;align-items:center;justify-content:center;
  color:#e11d48;background:#fff1f5;
}
.ai-starter .tx{min-width:0;display:flex;flex-direction:column;gap:2px}
.ai-starter .tx b{font-size:12.3px;color:var(--t1);font-weight:600;line-height:1.5}
.ai-starter .tx em{font-style:normal;font-size:11px;color:var(--t3)}
.ai-welcome-f{margin-top:12px;font-size:10.8px;color:var(--t4,#94a3b8)}

@media (max-width:1080px){
  .ai-shell .ai-msgs{height:auto;min-height:320px;max-height:52vh}
  .ai-starters{grid-template-columns:1fr}
  .ai-hero{flex-wrap:wrap}
  .ai-hero-r{align-items:flex-start;text-align:left}
}

/* ============================================================ 四、响应式 */
@media (max-width:1380px){
  .aic-providers{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:860px){
  .aic-providers{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1080px){
  .aic-grid{grid-template-columns:1fr}
  .aic-stats{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:760px){
  .aiw-fab{right:14px;bottom:14px;height:50px;min-width:50px;padding:0 12px}
  .aiw-fab-txt{display:none}
  /* 平台本身是桌面布局：窄屏下面板由 JS 按「可视区」算尺寸与位置 */
  .aiw-panel.narrow{border-radius:14px}
  .aiw-tip-r{display:none}
  .aic-fields{grid-template-columns:1fr}
  .aic-stats{grid-template-columns:1fr 1fr}
  .aic-hero{padding:13px}
  .aic-providers{grid-template-columns:1fr}
  .aic-prov{min-height:0}
}

@media print{
  .aiw-root{display:none!important}
}