.container{max-width:800px;margin:0 auto;padding:0 20px}.page-header{background:var(--accent-light);text-align:center;padding:40px 0 28px}.page-title{color:var(--ink-primary);letter-spacing:-.02em;margin-bottom:8px;font-size:clamp(1.6rem,3vw,2.1rem);font-weight:800}.page-desc{color:var(--ink-secondary);font-size:15px}.section{padding:32px 0 64px}.chat-wrap{background:var(--bg-card);border:1px solid var(--border-default);border-radius:var(--card-radius);height:calc(100vh - 280px);min-height:420px;box-shadow:var(--shadow-md);flex-direction:column;display:flex;overflow:hidden}.chat-messages{flex-direction:column;flex:1;gap:20px;padding:24px;display:flex;overflow-y:auto}.msg{flex-direction:column;gap:6px;display:flex;position:relative}.msg-meta{color:var(--ink-tertiary);align-items:center;gap:10px;font-size:12px;display:flex}.msg-role{font-weight:700}.msg-role-ai{color:var(--accent-ai-deep)}.msg-role-user{color:var(--ink-secondary)}.msg-time{color:var(--ink-tertiary);font-variant-numeric:tabular-nums}.msg-copy{border:1px solid var(--border-default);border-radius:var(--radius-full);color:var(--ink-tertiary);cursor:pointer;opacity:0;transition:opacity var(--duration-fast) ease;background:0 0;margin-left:auto;padding:2px 10px;font-family:inherit;font-size:11px}.msg:hover .msg-copy{opacity:1}.msg-copy:hover{border-color:var(--accent-ai);color:var(--accent-ai)}.msg-copy.copied{background:var(--color-success);color:#fff;border-color:var(--color-success)}.msg-body{color:var(--ink-primary);word-break:break-word;font-size:14px;line-height:1.75}.msg-user .msg-body{background:var(--accent-ai-light);border-radius:var(--radius-md);align-self:flex-end;max-width:85%;padding:12px 16px}.msg-ai .msg-body{padding:0}.markdown-content p{margin:0 0 10px}.markdown-content p:last-child{margin-bottom:0}.markdown-content h1,.markdown-content h2,.markdown-content h3{color:var(--ink-primary);margin:1em 0 .4em;font-weight:700;line-height:1.4}.markdown-content h1{font-size:1.35em}.markdown-content h2{font-size:1.2em}.markdown-content h3{font-size:1.08em}.markdown-content strong{color:var(--accent-ai-deep);font-weight:700}.markdown-content ul,.markdown-content ol{margin:10px 0;padding-left:1.5em}.markdown-content li{margin:4px 0}.markdown-content a{color:var(--accent-primary);text-decoration:underline}.markdown-content blockquote{border-left:3px solid var(--accent-ai);color:var(--ink-secondary);margin:12px 0;padding-left:14px}.markdown-content table{border-collapse:collapse;width:100%;margin:12px 0;font-size:13px}.markdown-content th,.markdown-content td{border:1px solid var(--border-default);text-align:left;padding:6px 10px}.markdown-content th{background:var(--bg-page);font-weight:600}.markdown-content code{color:var(--accent-ai-deep);background:#6366f11a;border-radius:4px;padding:2px 6px;font-family:ui-monospace,Cascadia Code,Consolas,monospace;font-size:.9em}.markdown-content pre{border-radius:var(--radius-md);background:#1e1e24;max-height:420px;margin:12px 0;padding:14px 16px;position:relative;overflow-x:auto}.markdown-content pre code{color:#d4d4d4;background:0 0;padding:0;font-size:13px;line-height:1.6}.code-copy-btn{color:#d4d4d4;cursor:pointer;opacity:0;transition:opacity var(--duration-fast) ease;background:#ffffff1a;border:1px solid #ffffff26;border-radius:6px;padding:3px 10px;font-family:inherit;font-size:11px;position:absolute;top:8px;right:8px}.markdown-content pre:hover .code-copy-btn{opacity:1}.code-copy-btn:hover{background:#fff3}.code-copy-btn.copied{background:var(--color-success);color:#fff;border-color:var(--color-success)}.hljs{color:#d4d4d4;background:0 0}.msg-sources{background:var(--accent-ai-light);border-radius:var(--radius-sm);flex-wrap:wrap;align-items:center;gap:6px;margin-top:10px;padding:10px 12px;display:flex}.sources-label{color:var(--accent-ai-deep);margin-right:4px;font-size:12px;font-weight:600}.source-tag{background:var(--bg-card);border:1px solid var(--border-default);border-radius:var(--radius-full);color:var(--accent-ai-deep);transition:border-color var(--duration-fast) ease, box-shadow var(--duration-fast) ease;align-items:center;gap:6px;padding:3px 10px;font-size:12px;text-decoration:none;display:inline-flex}.source-tag:hover{border-color:var(--accent-ai);box-shadow:var(--shadow-sm);transform:translateY(-1px)}.source-name{font-weight:500}.source-relevance{color:var(--ink-tertiary);font-size:11px}.msg-thinking .msg-body{background:var(--bg-page);border-radius:var(--radius-md);align-self:flex-start;align-items:center;gap:10px;padding:12px 16px;display:flex}.msg-thinking.error .msg-body{background:#ff3b3014;flex-wrap:wrap}.chat-spinner{border:2px solid var(--border-default);border-top-color:var(--accent-ai);border-radius:50%;flex-shrink:0;width:16px;height:16px;animation:.8s linear infinite spin}.thinking-text{color:var(--ink-secondary);font-size:14px}.error-text{color:var(--color-error);font-size:14px}.retry-btn{background:var(--color-error);color:#fff;border-radius:var(--radius-full);cursor:pointer;border:none;padding:4px 12px;font-family:inherit;font-size:12px}.retry-btn:hover{opacity:.9}.msg.highlight{animation:2s ease-out highlight-pulse}@keyframes highlight-pulse{0%{box-shadow:0 0 0 3px var(--accent-ai)}to{box-shadow:0 0 #0000}}.suggestions{border-top:1px solid var(--border-default);background:var(--bg-card);flex-wrap:wrap;gap:8px;padding:12px 24px;display:flex}.suggestion-chip{background:var(--bg-page);border:1px solid var(--border-default);border-radius:var(--radius-full);color:var(--ink-secondary);cursor:pointer;transition:border-color var(--duration-fast) ease, color var(--duration-fast) ease;padding:6px 14px;font-family:inherit;font-size:13px}.suggestion-chip:hover{border-color:var(--accent-ai);color:var(--accent-ai)}.chat-form{border-top:1px solid var(--border-default);background:var(--bg-card);gap:8px;padding:16px 24px;display:flex}.chat-input{border:1px solid var(--border-default);border-radius:var(--radius-full);background:var(--bg-page);color:var(--ink-primary);transition:border-color var(--duration-fast) ease;flex:1;padding:12px 18px;font-family:inherit;font-size:14px}.chat-input:focus{border-color:var(--accent-ai)}.chat-send{background:var(--accent-ai);color:#fff;border-radius:var(--radius-full);cursor:pointer;transition:background var(--duration-fast) ease;border:none;padding:12px 24px;font-family:inherit;font-size:14px;font-weight:600}.chat-send:hover{background:var(--accent-ai-deep)}@media (width<=600px){.chat-wrap{height:calc(100vh - 240px)}.chat-messages{gap:16px;padding:16px}.msg-user .msg-body{max-width:92%}.msg-meta{gap:6px;font-size:11px}.markdown-content pre{padding:12px;font-size:12px}.code-copy-btn{opacity:1}.suggestions,.chat-form{padding:12px 16px}}