:root{color-scheme:light;font-family:PingFang SC,Microsoft YaHei,sans-serif;color:#1f2937;background:radial-gradient(circle at top left,rgba(255,183,77,.35),transparent 28%),radial-gradient(circle at bottom right,rgba(14,165,233,.22),transparent 30%),linear-gradient(135deg,#f7f8fc 0%,#eef3ff 100%)}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;overflow:hidden}#app{height:100vh}a{color:inherit;text-decoration:none}.app-shell{max-width:1200px;margin:0 auto;padding:40px 20px;height:100vh;display:grid;grid-template-columns:360px 1fr;gap:24px;overflow:hidden}.chat-layout{max-width:1320px;grid-template-columns:320px 1fr}.hero-panel,.chat-panel{border:1px solid rgba(148,163,184,.18);border-radius:24px;background:rgba(255,255,255,.82);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);box-shadow:0 20px 60px #0f172a14;min-height:0}.hero-panel{padding:32px;display:flex;flex-direction:column;justify-content:center}.session-panel{justify-content:space-between;gap:20px}.session-panel-top{display:flex;flex-direction:column;gap:16px}.session-list{flex:1;min-height:0;overflow-y:auto;display:flex;flex-direction:column;gap:10px;padding-right:4px}.session-item{width:100%;border:1px solid rgba(203,213,225,.9);border-radius:16px;background:#fff;padding:14px 14px 14px 16px;display:flex;align-items:center;justify-content:space-between;gap:12px;cursor:pointer;text-align:left;transition:all .2s ease}.session-item:hover{border-color:#3b82f673;transform:translateY(-1px)}.session-item.active{border-color:#2563eb73;background:linear-gradient(135deg,#eff6ff 0%,#eef2ff 100%);box-shadow:0 10px 24px #2563eb14}.session-item-main{min-width:0;display:flex;flex-direction:column;gap:6px}.session-item-main strong{font-size:14px;color:#0f172a;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.session-item-main span{font-size:12px;color:#64748b}.session-delete{flex-shrink:0}.session-empty{padding:18px 14px;border-radius:16px;background:rgba(248,250,252,.9);color:#64748b;font-size:14px}.hero-badge{width:fit-content;padding:8px 14px;border-radius:999px;background:#111827;color:#fff;font-size:12px;letter-spacing:.08em;text-transform:uppercase}.hero-panel h1{margin:20px 0 12px;font-size:40px;line-height:1.15}.hero-panel p{margin:0;font-size:16px;line-height:1.8;color:#4b5563}.chat-panel{height:100%;min-height:0;display:flex;flex-direction:column;overflow:hidden}.chat-header{padding:24px 24px 16px;border-bottom:1px solid rgba(226,232,240,.9);display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.chat-header h2{margin:0 0 6px;font-size:24px}.chat-header span{color:#6b7280;font-size:14px}.chat-toolbar{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.message-list{flex:1;min-height:0;padding:24px;overflow-y:auto;display:flex;flex-direction:column;gap:18px;scroll-behavior:smooth;scrollbar-width:thin;scrollbar-color:rgba(148,163,184,.65) transparent}.message-list::-webkit-scrollbar{width:10px}.message-list::-webkit-scrollbar-track{background:transparent}.message-list::-webkit-scrollbar-thumb{background:rgba(148,163,184,.55);border-radius:999px;border:2px solid transparent;background-clip:padding-box}.message-list::-webkit-scrollbar-thumb:hover{background:rgba(100,116,139,.75);background-clip:padding-box}.message-item{display:flex;gap:12px}.message-item.user{flex-direction:row-reverse}.message-avatar{width:42px;height:42px;border-radius:14px;display:flex;align-items:center;justify-content:center;background:#111827;color:#fff;flex-shrink:0}.message-item.user .message-avatar{background:#f97316}.message-bubble{max-width:min(78%,680px);padding:16px 18px 44px;border-radius:20px;background:#f8fafc;box-shadow:inset 0 0 0 1px #e2e8f0d9;position:relative}.message-item.user .message-bubble{background:linear-gradient(135deg,#ffedd5 0%,#fdba74 100%);box-shadow:none}.message-role{margin-bottom:8px;font-size:13px;color:#6b7280}.message-actions{position:absolute;right:14px;bottom:12px;display:flex;align-items:center;gap:8px}.message-icon-button{width:30px;height:30px;border:1px solid rgba(148,163,184,.45);border-radius:999px;background:rgba(255,255,255,.92);color:#475569;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s ease;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}.message-icon-button:hover{border-color:#3b82f673;color:#1d4ed8;background:#ffffff}.message-icon-button:disabled{cursor:not-allowed;opacity:.55}.message-content{line-height:1.7;color:#111827;overflow-wrap:anywhere}.streaming-text{white-space:pre-wrap}.message-content p{margin:0 0 12px}.message-content p:last-child{margin-bottom:0}.message-content pre{margin:0;padding:14px 16px;overflow-x:auto;background:#f8fafc;border:none}.message-content code{font-family:SFMono-Regular,Menlo,Monaco,monospace;font-size:13px}.message-content :not(pre)>code{padding:2px 6px;border-radius:6px;background:rgba(226,232,240,.9);color:#0f172a}.message-content ul,.message-content ol{margin:10px 0;padding-left:22px}.message-content li+li{margin-top:6px}.message-content blockquote{margin:14px 0;padding:8px 14px;border-left:4px solid #fb923c;background:rgba(255,237,213,.5);color:#7c2d12}.message-content a{color:#2563eb;text-decoration:none}.message-content a:hover{text-decoration:underline}.message-content table{width:100%;border-collapse:collapse;margin:14px 0;overflow:hidden}.message-content th,.message-content td{padding:10px 12px;border:1px solid rgba(203,213,225,.8);text-align:left}.message-content th{background:rgba(241,245,249,.9)}.message-content .hljs{color:#1e293b;background:#f8fafc}.message-content .code-block{margin:14px 0;border:1px solid rgba(203,213,225,.9);border-radius:16px;overflow:hidden;background:#f8fafc}.message-content .code-block-streaming{opacity:.98}.message-content .code-block-streaming .code-toolbar{background:#f8fafc}.message-content .code-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 14px;border-bottom:1px solid rgba(203,213,225,.9);background:#eef2ff}.message-content .code-language{font-size:12px;font-weight:600;text-transform:uppercase;color:#475569}.message-content .copy-code-button{border:1px solid rgba(148,163,184,.6);border-radius:8px;background:#ffffff;color:#1e293b;font-size:12px;line-height:1;padding:8px 10px;cursor:pointer;transition:background-color .2s ease,border-color .2s ease}.message-content .copy-code-button:hover{background:#f8fafc;border-color:#64748bcc}.message-content .copy-code-button:disabled{cursor:default;color:#0369a1;border-color:#0ea5e959;background:#e0f2fe}.streaming-text{white-space:pre-wrap;word-break:break-word}.streaming-tail{white-space:pre-wrap;word-break:break-word;line-height:1.7}.message-content .hljs-keyword,.message-content .hljs-selector-tag,.message-content .hljs-literal{color:#9f1239}.message-content .hljs-string,.message-content .hljs-attr,.message-content .hljs-template-tag{color:#047857}.message-content .hljs-number,.message-content .hljs-attribute,.message-content .hljs-built_in{color:#b45309}.message-content .hljs-title,.message-content .hljs-function,.message-content .hljs-section{color:#1d4ed8}.message-content .hljs-comment,.message-content .hljs-quote{color:#64748b;font-style:italic}.input-panel{padding:20px 24px 24px;border-top:1px solid rgba(226,232,240,.9)}.input-panel .el-textarea__inner{min-height:44px!important;max-height:180px;padding:12px 14px;border-radius:16px;line-height:1.7;scrollbar-width:thin;scrollbar-color:rgba(148,163,184,.65) transparent}.input-panel .el-textarea__inner::-webkit-scrollbar{width:8px}.input-panel .el-textarea__inner::-webkit-scrollbar-track{background:transparent}.input-panel .el-textarea__inner::-webkit-scrollbar-thumb{background:rgba(148,163,184,.5);border-radius:999px}.input-actions{margin-top:14px;display:flex;align-items:center;justify-content:space-between;gap:16px}.input-actions span{font-size:13px;color:#6b7280}.input-toggles{display:flex;align-items:center;gap:14px;flex-wrap:wrap}.search-toggle{display:inline-flex;align-items:center;gap:10px;color:#475569;font-size:13px}.search-result-card{margin-bottom:12px;padding:12px 14px;border-radius:14px;background:linear-gradient(135deg,#eff6ff 0%,#f8fafc 100%);border:1px solid rgba(191,219,254,.95)}.search-result-index{font-size:12px;font-weight:700;color:#2563eb;margin-bottom:4px}.search-result-title{display:inline-block;font-size:14px;font-weight:600;color:#0f172a;text-decoration:none;margin-bottom:6px}.search-result-title:hover{color:#1d4ed8;text-decoration:underline}.search-result-snippet{margin:0;font-size:13px;color:#475569;line-height:1.7}.search-answer-divider{margin:14px 0 12px;font-size:12px;font-weight:700;letter-spacing:.04em;color:#64748b;text-transform:uppercase}.weather-card{margin-bottom:14px;padding:16px 18px;border-radius:18px;background:linear-gradient(135deg,#eff6ff 0%,#dbeafe 45%,#f8fafc 100%);border:1px solid rgba(147,197,253,.85)}.weather-card-city{font-size:14px;font-weight:700;color:#1d4ed8;margin-bottom:10px}.weather-card-main{display:flex;align-items:baseline;gap:12px;margin-bottom:10px}.weather-card-main strong{font-size:32px;line-height:1;color:#0f172a}.weather-card-main span{font-size:15px;color:#334155}.weather-card-meta{display:flex;flex-wrap:wrap;gap:10px 16px;font-size:13px;color:#475569}@media (max-width: 960px){body{overflow:auto}#app,.app-shell{height:auto}.app-shell{grid-template-columns:1fr;min-height:100vh;overflow:visible}.chat-panel{height:72vh}}.auth-page{min-height:100vh;display:grid;place-items:center;padding:24px}.auth-panel{width:min(420px,100%);display:flex;flex-direction:column;gap:14px;padding:32px;border-radius:24px;background:rgba(255,255,255,.88);border:1px solid rgba(148,163,184,.18);box-shadow:0 20px 60px #0f172a14}.auth-brand{font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:#475569}.auth-panel h1{margin:0 0 4px;font-size:32px}.auth-link{font-size:14px;color:#2563eb}@media (max-width: 640px){.app-shell{padding:20px 12px;gap:16px}.hero-panel,.chat-panel{border-radius:20px}.hero-panel{padding:24px}.hero-panel h1{font-size:30px}.message-bubble{max-width:100%}.input-actions{flex-direction:column;align-items:stretch}.chat-header{flex-direction:column}}