vectorSeek
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zsjz-ai


			
				
					
						
						
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							<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org" lang="zh-CN">
<head>
    <meta charset="UTF-8"/>
    <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
    <title th:text="${nickname}">Solon Code Web</title>
    <link rel="stylesheet" href="/js/a/layui/css/layui.css"/>
    <link rel="stylesheet" href="/js/a/css/theme.css"/>
    <style>
        :root {
            --sidebar-width: 260px;
        }

        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html, body {
            height: 100%;
            overflow: hidden;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-primary);
            display: flex;
            font-size: 14px;
            transition: background 0.3s, color 0.3s;
        }

        /* ===== Sidebar ===== */
        .sidebar {
            width: var(--sidebar-width);
            background: var(--bg-sidebar);
            border-right: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            flex-shrink: 0;
            height: 100vh;
            transition: background 0.3s;
        }

        .sidebar-header {
            padding: 20px 16px 16px;
        }

        .new-chat-btn {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 11px 0;
            border: 1px dashed var(--border-color);
            border-radius: 10px;
            background: transparent;
            color: var(--text-primary);
            cursor: pointer;
            font-size: 14px;
            transition: all 0.2s;
        }

        .new-chat-btn:hover {
            background: var(--accent-light);
            border-color: var(--accent);
            color: var(--accent);
        }

        .sidebar-title {
            padding: 16px 16px 8px;
            font-size: 11px;
            color: var(--text-secondary);
            font-weight: 600;
            letter-spacing: 1px;
            text-transform: uppercase;
        }

        .sidebar-list {
            flex: 1;
            overflow-y: auto;
            padding: 4px 10px;
        }

        .sidebar-item {
            padding: 10px 12px;
            border-radius: 10px;
            cursor: pointer;
            color: var(--text-sidebar);
            font-size: 13px;
            display: flex;
            align-items: center;
            transition: all 0.15s;
            margin-bottom: 2px;
        }

        .sidebar-item:hover {
            background: var(--bg-hover);
        }

        .sidebar-item.active {
            background: var(--accent-light);
            color: var(--accent);
            font-weight: 500;
        }

        .sidebar-item-label {
            flex: 1;
            min-width: 0;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .sidebar-item-del {
            display: none;
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            border: none;
            background: none;
            border-radius: 6px;
            cursor: pointer;
            color: var(--text-secondary);
            font-size: 14px;
            align-items: center;
            justify-content: center;
            margin-left: 4px;
            transition: all 0.15s;
        }

        .sidebar-item:hover .sidebar-item-del {
            display: flex;
        }

        .sidebar-item-del:hover {
            background: #ef444422;
            color: #ef4444;
        }

        .sidebar-footer {
            padding: 14px 16px;
            border-top: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            align-items: stretch;
            gap: 12px;
        }

        .sidebar-footer-meta {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .sidebar-config-btn {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 12px;
            border: 1px solid var(--border-color);
            border-radius: 10px;
            background: var(--bg-main);
            color: var(--text-primary);
            cursor: pointer;
            font-size: 13px;
            transition: all 0.2s;
        }

        .sidebar-config-btn:hover {
            border-color: var(--accent);
            background: var(--accent-light);
            color: var(--accent);
        }

        .model-modal {
            position: fixed;
            inset: 0;
            display: none;
            align-items: center;
            justify-content: center;
            padding: 24px;
            background: rgba(15, 23, 42, 0.45);
            z-index: 999;
        }

        .model-modal.active {
            display: flex;
        }

        .model-modal-card {
            width: min(680px, 100%);
            max-height: 90vh;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            border: 1px solid var(--border-color);
            border-radius: 18px;
            background: var(--bg-input-box);
            box-shadow: var(--shadow-lg);
        }

        .model-modal-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 20px 14px;
            border-bottom: 1px solid var(--border-color);
        }

        .model-modal-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
        }

        .model-modal-close {
            width: 34px;
            height: 34px;
            border: none;
            border-radius: 10px;
            background: transparent;
            color: var(--text-secondary);
            cursor: pointer;
            transition: all 0.2s;
        }

        .model-modal-close:hover {
            background: var(--bg-hover);
            color: var(--text-primary);
        }

        .model-modal-body {
            padding: 18px 20px;
            overflow-y: auto;
        }

        .model-form-grid {
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: 16px;
        }

        .model-field {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .model-field.full {
            grid-column: 1 / -1;
        }

        .model-field label {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-primary);
        }

        .model-field input,
        .model-field select,
        .model-field textarea {
            width: 100%;
            border: 1px solid var(--border-input);
            border-radius: 12px;
            background: var(--bg-main);
            color: var(--text-primary);
            padding: 11px 12px;
            font: inherit;
            outline: none;
            transition: all 0.2s;
        }

        .model-field input:focus,
        .model-field select:focus,
        .model-field textarea:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 4px rgba(79, 110, 247, 0.08);
        }

        .model-field textarea {
            min-height: 84px;
            resize: vertical;
        }

        .model-save-btn,
        .model-cancel-btn {
            height: 44px;
            border-radius: 12px;
            font-size: 14px;
            cursor: pointer;
            transition: all 0.2s;
        }

        .model-modal-footer {
            padding: 16px 20px 20px;
            border-top: 1px solid var(--border-color);
            display: flex;
            justify-content: flex-end;
            gap: 12px;
        }

        .model-cancel-btn {
            min-width: 92px;
            border: 1px solid var(--border-color);
            background: transparent;
            color: var(--text-secondary);
        }

        .model-cancel-btn:hover {
            background: var(--bg-hover);
            color: var(--text-primary);
        }

        .model-save-btn {
            min-width: 120px;
            border: none;
            background: var(--accent);
            color: #fff;
        }

        .model-save-btn:hover {
            background: var(--accent-hover);
        }

        .model-switch {
            display: flex;
            align-items: center;
            gap: 10px;
            padding-top: 8px;
            color: var(--text-primary);
        }

        .model-switch input {
            width: 16px;
            height: 16px;
        }

        .model-hint {
            margin-top: 4px;
            font-size: 12px;
            color: var(--text-secondary);
        }

        /* Streaming indicator for sidebar items */
        .sidebar-item.streaming {
            border-left: 3px solid var(--accent);
            padding-left: 9px;
        }

        .sidebar-item.streaming:hover .sidebar-item-del {
            display: none;
        }

        .sidebar-item-spinner {
            flex-shrink: 0;
            width: 16px;
            height: 16px;
            border: 2px solid var(--border-color);
            border-top-color: var(--accent);
            border-radius: 50%;
            animation: blob-spin 0.8s linear infinite;
            margin-left: 6px;
        }

        /* ===== Main ===== */
        .main-area {
            flex: 1;
            display: flex;
            flex-direction: column;
            height: 100vh;
            min-width: 0;
            background: var(--bg-main);
            transition: background 0.3s;
        }

        /* Header */
        .main-header {
            padding: 14px 28px;
            display: flex;
            align-items: center;
            justify-content: flex-end;
            flex-shrink: 0;
        }

        .theme-toggle {
            background: none;
            border: 1px solid var(--border-color);
            border-radius: 10px;
            padding: 6px 10px;
            cursor: pointer;
            color: var(--text-secondary);
            font-size: 16px;
            transition: all 0.2s;
            display: flex;
            align-items: center;
        }

        .theme-toggle:hover {
            background: var(--bg-hover);
            color: var(--text-primary);
        }

        /* ===== Welcome ===== */
        .welcome-view {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 0 24px 80px;
        }

        .welcome-avatar {
            width: 120px;
            height: 120px;
            position: relative;
            margin-bottom: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .welcome-avatar .blob {
            position: absolute;
        }

        .welcome-avatar .blob-outer {
            width: 110px;
            height: 110px;
            background: conic-gradient(from 0deg, #4f6ef7, #818cf8 15%, #a78bfa 30%, #c084fc 50%, #818cf8 70%, #4f6ef7 85%, #4f6ef7);
            border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
            animation: blob-morph1 8s ease-in-out infinite, blob-spin 6s linear infinite;
            opacity: 0.82;
            filter: blur(1.5px) drop-shadow(0 0 14px rgba(79, 110, 247, 0.4));
        }

        .welcome-avatar .blob-core {
            width: 38px;
            height: 38px;
            z-index: 1;
            border-radius: 50% 40% 60% 35% / 40% 55% 35% 60%;
            background: linear-gradient(135deg, var(--accent), #a78bfa, #c084fc, var(--accent));
            background-size: 300% 300%;
            animation: core-flow 4s ease infinite, core-morph 5s ease-in-out infinite, core-pulse 3s ease-in-out infinite;
            box-shadow: 0 0 20px rgba(79, 110, 247, 0.45), 0 0 44px rgba(167, 139, 250, 0.2);
            filter: blur(0.5px);
        }

        @keyframes blob-morph1 {
            0%, 100% {
                border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
            }
            25% {
                border-radius: 30% 60% 70% 40% / 50% 60% 30% 60%;
            }
            50% {
                border-radius: 50% 60% 30% 60% / 30% 50% 70% 60%;
            }
            75% {
                border-radius: 40% 60% 50% 40% / 60% 40% 60% 50%;
            }
        }

        @keyframes blob-spin {
            to {
                transform: rotate(360deg);
            }
        }

        @keyframes core-flow {
            0% {
                background-position: 0% 50%;
            }
            50% {
                background-position: 100% 50%;
            }
            100% {
                background-position: 0% 50%;
            }
        }

        @keyframes core-morph {
            0%, 100% {
                border-radius: 50% 40% 60% 35% / 40% 55% 35% 60%;
            }
            20% {
                border-radius: 35% 55% 40% 60% / 55% 35% 60% 40%;
            }
            40% {
                border-radius: 60% 35% 50% 45% / 35% 60% 45% 55%;
            }
            60% {
                border-radius: 40% 60% 35% 55% / 60% 40% 55% 35%;
            }
            80% {
                border-radius: 55% 45% 55% 40% / 45% 50% 40% 60%;
            }
        }

        @keyframes core-pulse {
            0%, 100% {
                transform: scale(1);
                box-shadow: 0 0 20px rgba(79, 110, 247, 0.45), 0 0 44px rgba(167, 139, 250, 0.2);
            }
            50% {
                transform: scale(1.1);
                box-shadow: 0 0 28px rgba(79, 110, 247, 0.55), 0 0 56px rgba(167, 139, 250, 0.3);
            }
        }

        .welcome-title {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .welcome-sub {
            color: var(--text-secondary);
            font-size: 15px;
            margin-bottom: 24px;
        }

        /* Quick Questions */
        .quick-questions {
            width: 100%;
            max-width: 680px;
            margin-bottom: 16px;
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .quick-q-chip {
            padding: 6px 14px;
            border: 1px solid var(--border-color);
            border-radius: 20px;
            background: var(--bg-input-box);
            color: var(--text-secondary);
            font-size: 13px;
            cursor: pointer;
            transition: all 0.2s;
            white-space: nowrap;
            max-width: 320px;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .quick-q-chip:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: var(--accent-light);
        }

        .welcome-input-box {
            width: 100%;
            max-width: 680px;
            background: var(--bg-input-box);
            border: 1px solid var(--border-input);
            border-radius: 16px;
            box-shadow: var(--shadow-lg);
            display: flex;
            flex-direction: column;
            transition: all 0.25s;
        }

        .welcome-input-box:focus-within {
            border-color: var(--accent);
            box-shadow: var(--shadow-lg), 0 0 0 4px rgba(79, 110, 247, 0.08);
        }

        .welcome-input-box textarea {
            border: none;
            outline: none;
            resize: none;
            background: transparent;
            padding: 18px 20px 8px;
            font-family: var(--font-sans);
            font-size: 15px;
            color: var(--text-primary);
            min-height: 54px;
            max-height: 140px;
            line-height: 1.6;
        }

        .welcome-input-box textarea::placeholder {
            color: var(--text-secondary);
        }

        .welcome-toolbar {
            display: flex;
            align-items: center;
            justify-content: flex-end;
            padding: 8px 14px;
        }

        .welcome-send-btn {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            border: none;
            background: var(--accent);
            color: #fff;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            transition: all 0.2s;
        }

        .welcome-send-btn:hover {
            background: var(--accent-hover);
            transform: scale(1.06);
        }

        /* ===== Chat View ===== */
        .chat-view {
            flex: 1;
            display: none;
            flex-direction: column;
            min-height: 0;
        }

        .chat-view.active {
            display: flex;
        }

        .messages-wrap {
            flex: 1;
            overflow-y: auto;
        }

        .messages-inner {
            max-width: 820px;
            margin: 0 auto;
            padding: 28px 24px 12px;
        }

        /* Message */
        .msg-row {
            display: flex;
            margin-bottom: 28px;
            gap: 14px;
            animation: msg-in 0.25s ease-out;
        }

        @keyframes msg-in {
            from {
                opacity: 0;
                transform: translateY(8px);
            }
            to {
                opacity: 1;
                transform: none;
            }
        }

        .msg-row.user {
            justify-content: flex-end;
        }

        .msg-row.assistant {
            justify-content: flex-start;
        }

        .msg-avatar {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 600;
        }

        .msg-row.assistant .msg-avatar {
            background: linear-gradient(135deg, var(--accent), #a78bfa);
            color: #fff;
        }

        .msg-row.user .msg-avatar {
            background: var(--bg-hover);
            color: var(--text-secondary);
        }

        .msg-bubble {
            max-width: 75%;
            line-height: 1.75;
            word-break: break-word;
        }

        .msg-row.user .msg-bubble {
            background: var(--bg-user-msg);
            color: var(--text-user-msg);
            padding: 12px 18px;
            border-radius: 20px 20px 4px 20px;
            font-size: 14px;
        }

        .msg-row.assistant .msg-bubble {
            max-width: 88%;
            min-width: 88%;
        }

        /* Markdown */
        .md-content {
            padding: 2px 0;
            color: var(--text-ai-msg);
            font-size: 14px;
        }

        .md-content > :first-child {
            margin-top: 0;
        }

        .md-content > :last-child {
            margin-bottom: 0;
        }

        .md-content p {
            margin: 7px 0;
        }

        .md-content h1, .md-content h2, .md-content h3, .md-content h4 {
            margin: 16px 0 8px;
            font-weight: 600;
            color: var(--text-primary);
        }

        .md-content h1 {
            font-size: 1.35em;
        }

        .md-content h2 {
            font-size: 1.2em;
        }

        .md-content h3 {
            font-size: 1.08em;
        }

        .md-content strong {
            font-weight: 600;
        }

        .md-content code {
            background: var(--bg-code);
            padding: 2px 7px;
            border-radius: 5px;
            font-family: var(--font-mono);
            font-size: 0.87em;
        }

        .md-content pre {
            background: var(--bg-code-block);
            padding: 16px 18px;
            border-radius: 10px;
            overflow-x: auto;
            margin: 10px 0;
        }

        .md-content pre code {
            background: none;
            padding: 0;
            color: var(--text-code);
            font-size: 13px;
        }

        .md-content ul, .md-content ol {
            padding-left: 22px;
            margin: 7px 0;
        }

        .md-content li {
            margin: 4px 0;
        }

        .md-content blockquote {
            border-left: 3px solid var(--accent);
            padding-left: 14px;
            color: var(--text-secondary);
            margin: 10px 0;
        }

        .md-content a {
            color: var(--accent);
            text-decoration: none;
        }

        .md-content a:hover {
            text-decoration: underline;
        }

        .md-content table {
            border-collapse: collapse;
            margin: 10px 0;
            width: 100%;
            font-size: 13px;
        }

        .md-content th, .md-content td {
            border: 1px solid var(--border-color);
            padding: 7px 12px;
            text-align: left;
        }

        .md-content th {
            background: var(--bg-hover);
            font-weight: 600;
        }

        .md-content img {
            max-width: 100%;
            border-radius: 8px;
        }

        .md-content hr {
            border: none;
            border-top: 1px solid var(--border-color);
            margin: 14px 0;
        }

        /* Tool Card */
        .tool-card {
            margin: 10px 0;
            border: 1px solid var(--border-color);
            border-radius: 10px;
            overflow: hidden;
            transition: border-color 0.2s;
        }

        .tool-card-header {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 14px;
            cursor: pointer;
            transition: background 0.15s;
            font-size: 13px;
        }

        .tool-card-header:hover {
            background: var(--bg-hover);
        }

        .tool-status-icon {
            width: 22px;
            height: 22px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 12px;
            transition: all 0.3s;
        }

        .tool-status-icon.loading {
            border: 2px solid var(--border-color);
            border-top-color: var(--accent);
            animation: blob-spin 0.8s linear infinite;
        }

        .tool-status-icon.done {
            background: #22c55e;
            color: #fff;
            border: none;
            animation: none;
        }

        .tool-name {
            font-weight: 600;
            color: var(--text-primary);
        }

        .tool-label {
            color: var(--text-secondary);
            font-size: 12px;
        }

        .tool-toggle {
            margin-left: auto;
            color: var(--text-secondary);
            font-size: 14px;
            transition: transform 0.2s;
        }

        .tool-card.expanded .tool-toggle {
            transform: rotate(90deg);
        }

        .tool-card-body {
            display: none;
            padding: 0 14px 12px;
            font-family: var(--font-mono);
            font-size: 12px;
            color: var(--text-secondary);
            white-space: pre-wrap;
            word-break: break-all;
            max-height: 200px;
            overflow-y: auto;
            border-top: 1px solid var(--border-color);
        }

        .tool-card.expanded .tool-card-body {
            display: block;
        }

        .chunk-error {
            margin: 8px 0;
            padding: 10px 14px;
            background: var(--error-bg);
            border-left: 3px solid var(--error-border);
            border-radius: 6px;
            color: var(--error-text);
            font-size: 13px;
        }

        /* HITL Card */
        .hitl-card {
            margin: 10px 0;
            border: 1px solid #f59e0b;
            border-radius: 10px;
            overflow: hidden;
            background: var(--bg-input-box);
            animation: msg-in 0.25s ease-out;
        }

        .hitl-card-header {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 14px;
            font-size: 14px;
            font-weight: 600;
            color: #f59e0b;
            border-bottom: 1px solid var(--border-color);
        }

        .hitl-card-header i {
            font-size: 18px;
        }

        .hitl-card-body {
            padding: 12px 14px;
            font-size: 13px;
            color: var(--text-primary);
        }

        .hitl-card-body .hitl-tool {
            margin-bottom: 6px;
            color: var(--text-secondary);
        }

        .hitl-card-body .hitl-tool strong {
            color: var(--text-primary);
        }

        .hitl-card-body .hitl-command {
            background: var(--bg-code-block);
            padding: 10px 14px;
            border-radius: 8px;
            font-family: var(--font-mono);
            font-size: 13px;
            color: var(--text-code);
            word-break: break-all;
            margin: 8px 0 12px;
        }

        .hitl-card-actions {
            display: flex;
            gap: 10px;
            padding: 0 14px 14px;
        }

        .hitl-btn {
            padding: 8px 20px;
            border-radius: 8px;
            border: none;
            cursor: pointer;
            font-size: 13px;
            font-weight: 500;
            transition: all 0.2s;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .hitl-btn-approve {
            background: #22c55e;
            color: #fff;
        }

        .hitl-btn-approve:hover {
            background: #16a34a;
        }

        .hitl-btn-reject {
            background: #ef4444;
            color: #fff;
        }

        .hitl-btn-reject:hover {
            background: #dc2626;
        }

        .hitl-btn:disabled {
            opacity: 0.5;
            cursor: not-allowed;
        }

        /* Msg Actions */
        .msg-actions {
            display: flex;
            gap: 6px;
            margin-top: 10px;
            opacity: 0;
            transition: opacity 0.2s;
        }

        .msg-row.assistant:hover .msg-actions {
            opacity: 1;
        }

        .msg-action-btn {
            background: none;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 5px 10px;
            cursor: pointer;
            color: var(--text-secondary);
            font-size: 12px;
            transition: all 0.15s;
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .msg-action-btn:hover {
            background: var(--bg-hover);
            color: var(--text-primary);
            border-color: var(--accent);
        }

        /* Thinking */
        .inline-thinking {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 0;
            color: var(--text-secondary);
            font-size: 13px;
        }

        .thinking-row {
            display: flex;
            gap: 14px;
            margin-bottom: 28px;
            animation: msg-in 0.25s ease-out;
        }

        .thinking-bubble {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-secondary);
            font-size: 14px;
            padding: 10px 0;
        }

        .thinking-dots {
            display: flex;
            gap: 5px;
        }

        .thinking-dots span {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--thinking-dot);
            animation: dot-bounce 1.4s ease-in-out infinite;
        }

        .thinking-dots span:nth-child(2) {
            animation-delay: 0.2s;
        }

        .thinking-dots span:nth-child(3) {
            animation-delay: 0.4s;
        }

        @keyframes dot-bounce {
            0%, 80%, 100% {
                opacity: 0.25;
                transform: scale(0.85);
            }
            40% {
                opacity: 1;
                transform: scale(1.15);
            }
        }

        /* Thinking Block (collapsible reasoning content) */
        .thinking-block {
            margin: 0 0 12px;
            border: 1px solid var(--thinking-block-border);
            border-radius: 10px;
            overflow: hidden;
            background: var(--thinking-block-bg);
        }

        .thinking-block-header {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 14px;
            cursor: pointer;
            font-size: 13px;
            user-select: none;
            transition: background 0.15s;
        }

        .thinking-block-header:hover {
            background: var(--bg-hover);
        }

        .thinking-block-label {
            color: var(--text-secondary);
            font-weight: 500;
        }

        .thinking-block-toggle {
            margin-left: auto;
            color: var(--text-secondary);
            font-size: 12px;
            transition: transform 0.25s;
        }

        .thinking-block.expanded .thinking-block-toggle {
            transform: rotate(90deg);
        }

        .thinking-block-body {
            padding: 0 14px 12px;
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            border-top: 1px solid var(--thinking-block-border);
            max-height: 300px;
            overflow-y: auto;
        }

        .thinking-block-body .md-content {
            color: var(--text-secondary);
            font-size: 13px;
        }

        .thinking-block:not(.expanded) .thinking-block-body {
            display: none;
        }

        .thinking-block.streaming {
            border-color: var(--accent);
        }

        .thinking-block.streaming .thinking-block-label {
            color: var(--accent);
        }

        .thinking-block-dots {
            display: inline-flex;
            gap: 4px;
            margin-left: 4px;
            vertical-align: middle;
        }

        .thinking-block-dots span {
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background: var(--accent);
            animation: dot-bounce 1.4s ease-in-out infinite;
        }

        .thinking-block-dots span:nth-child(2) {
            animation-delay: 0.2s;
        }

        .thinking-block-dots span:nth-child(3) {
            animation-delay: 0.4s;
        }

        /* Bottom Input */
        .input-wrap {
            padding: 12px 24px 22px;
            flex-shrink: 0;
        }

        .input-box {
            max-width: 820px;
            margin: 0 auto;
            background: var(--bg-input-box);
            border: 1px solid var(--border-input);
            border-radius: 14px;
            box-shadow: var(--shadow);
            display: flex;
            flex-direction: column;
            transition: all 0.25s;
        }

        .input-box:focus-within {
            border-color: var(--accent);
            box-shadow: var(--shadow), 0 0 0 3px rgba(79, 110, 247, 0.06);
        }

        .input-box textarea {
            border: none;
            outline: none;
            resize: none;
            background: transparent;
            padding: 14px 16px 6px;
            font-family: var(--font-sans);
            font-size: 14px;
            color: var(--text-primary);
            min-height: 44px;
            max-height: 140px;
            line-height: 1.6;
        }

        .input-box textarea::placeholder {
            color: var(--text-secondary);
        }

        .input-toolbar {
            display: flex;
            align-items: center;
            justify-content: flex-end;
            padding: 6px 10px;
        }

        .send-btn {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: none;
            background: var(--accent);
            color: #fff;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            transition: all 0.2s;
        }

        .send-btn:hover {
            background: var(--accent-hover);
        }

        .send-btn:disabled {
            opacity: 0.4;
            cursor: not-allowed;
        }

        .send-btn.stop-mode {
            background: #ef4444;
        }

        .send-btn.stop-mode:hover {
            background: #dc2626;
        }

        .send-btn.stop-mode .stop-icon {
            width: 14px;
            height: 14px;
            background: #fff;
            border-radius: 3px;
        }

        /* Image Preview */
        .img-preview-wrap {
            padding: 8px 14px 0;
            display: none;
        }

        .img-preview-wrap.has-img {
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }

        .img-preview {
            position: relative;
            display: inline-block;
        }

        .img-preview img {
            max-height: 80px;
            max-width: 200px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            object-fit: cover;
        }

        .img-preview-remove {
            position: absolute;
            top: -6px;
            right: -6px;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: #ef4444;
            color: #fff;
            border: 2px solid var(--bg-input-box);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            line-height: 1;
        }

        .img-preview-remove:hover {
            background: #dc2626;
        }

        /* Scrollbar */
        .messages-wrap::-webkit-scrollbar, .sidebar-list::-webkit-scrollbar, .thinking-block-body::-webkit-scrollbar {
            width: 5px;
        }

        .messages-wrap::-webkit-scrollbar-thumb, .sidebar-list::-webkit-scrollbar-thumb, .thinking-block-body::-webkit-scrollbar-thumb {
            background: var(--border-color);
            border-radius: 3px;
        }

        .messages-wrap::-webkit-scrollbar-track, .sidebar-list::-webkit-scrollbar-track, .thinking-block-body::-webkit-scrollbar-track {
            background: transparent;
        }

        @media (max-width: 768px) {
            .sidebar {
                display: none;
            }

            .model-form-grid {
                grid-template-columns: 1fr;
            }
        }
    </style>
</head>
<body data-theme="light">

<!-- Sidebar -->
<div class="sidebar">
    <div class="sidebar-header">
        <button class="new-chat-btn" id="newChatBtn">
            <i class="layui-icon layui-icon-addition"></i> 新对话
        </button>
    </div>
    <div class="sidebar-title">最近对话</div>
    <div class="sidebar-list" id="historyList"></div>
    <div class="sidebar-footer">
        <!--        <div class="sidebar-footer-meta">-->
        <!--            <i class="layui-icon layui-icon-util" style="font-size:16px;color:var(&#45;&#45;text-secondary)"></i>-->
        <!--            <span style="font-size:12px;color:var(&#45;&#45;text-secondary)" th:text="${nickname}">AI</span>-->
        <!--        </div>-->
        <button class="sidebar-config-btn" id="modelConfigBtn" type="button">
            <i class="layui-icon layui-icon-set-fill"></i>
            <span>模型配置</span>
        </button>
    </div>
</div>

<!-- Main -->
<div class="main-area">
    <div class="main-header">
      <!--  <button class="theme-toggle" id="themeBtn" title="切换主题">
            <i class="layui-icon" id="themeIcon">&#xe748;</i>
        </button>-->
    </div>

    <!-- Welcome View -->
    <div class="welcome-view" id="welcomeView">
        <div class="welcome-avatar">
            <div class="blob blob-outer"></div>
            <div class="blob-core"></div>
        </div>
        <div class="welcome-title" th:text="'你好，我是 ' + ${nickname} + '！'">你好，我是 清鉴 ！</div>
        <div class="welcome-sub">有什么我可以帮你的吗?</div>
        <div class="quick-questions" id="welcomeQuickQs"></div>
        <div class="welcome-input-box">
            <div class="img-preview-wrap" id="welcomeImgWrap">
                <div class="img-preview"><img id="welcomeImgPreview" src="" alt=""/><span class="img-preview-remove"
                                                                                          id="welcomeImgRemove">&times;</span>
                </div>
            </div>
            <textarea id="welcomeInput" placeholder="和我聊聊天吧..." rows="1" autofocus></textarea>
            <div class="welcome-toolbar">
                <button class="welcome-send-btn" id="welcomeSendBtn" title="发送">
                    <i class="layui-icon layui-icon-release"></i>
                </button>
            </div>
        </div>
    </div>

    <!-- Chat View -->
    <div class="chat-view" id="chatView">
        <div class="messages-wrap" id="messagesWrap">
            <!-- Per-session containers are added here dynamically -->
        </div>
        <div class="input-wrap">
            <div class="quick-questions" id="chatQuickQs" style="max-width:820px;margin:0 auto 10px;"></div>
            <div class="input-box">
                <div class="img-preview-wrap" id="chatImgWrap">
                    <div class="img-preview"><img id="chatImgPreview" src="" alt=""/><span class="img-preview-remove"
                                                                                           id="chatImgRemove">&times;</span>
                    </div>
                </div>
                <textarea id="chatInput" placeholder="请输入消息..." rows="1"></textarea>
                <div class="input-toolbar">
                    <button class="send-btn" id="chatSendBtn" title="发送">
                        <i class="layui-icon layui-icon-release"></i>
                    </button>
                </div>
            </div>
        </div>
    </div>
</div>

<div class="model-modal" id="modelConfigModal">
    <div class="model-modal-card" role="dialog" aria-modal="true" aria-labelledby="modelConfigTitle">
        <div class="model-modal-header">
            <div>
                <div class="model-modal-title" id="modelConfigTitle">模型配置</div>
                <div class="model-hint">系统当前仅维护一套聊天模型配置，打开后会自动加载默认模型信息。 </div>
            </div>
            <button class="model-modal-close" id="modelConfigCloseBtn" type="button" aria-label="关闭">
                <i class="layui-icon layui-icon-close"></i>
            </button>
        </div>
        <div class="model-modal-body">
            <form id="modelConfigForm">
                <input type="hidden" id="modelId" name="id"/>
                <input type="hidden" id="modelCategory" name="category" value="chat"/>
                <div class="model-form-grid">
                    <div class="model-field">
                        <label for="providerCode">服务商</label>
                        <select id="providerCode" name="providerCode"></select>
                    </div>
                    <div class="model-field">
                        <label for="modelName">模型名称</label>
                        <input id="modelName" name="modelName" type="text" placeholder="例如：qwen3.5-plus" required/>
                    </div>
                    <div class="model-field full">
                        <label for="apiHost">API Host</label>
                        <input id="apiHost" name="apiHost" type="text"
                               placeholder="例如：https://dashscope.aliyuncs.com/compatible-mode/v1"/>
                    </div>
                    <div class="model-field full">
                        <label for="apiKey">API Key</label>
                        <input id="apiKey" name="apiKey" type="text" placeholder="请输入 API Key"/>
                    </div>
                    <div class="model-field">
                        <label for="hasUse">启用状态</label>
                        <div class="model-switch">
                            <input id="hasUse" type="checkbox"/>
                            <span>设为当前聊天使用模型</span>
                        </div>
                    </div>
                </div>
            </form>
        </div>
        <div class="model-modal-footer">
            <button class="model-cancel-btn" id="modelCancelBtn" type="button">取消</button>
            <button class="model-save-btn" id="modelSaveBtn" type="button">保存配置</button>
        </div>
    </div>
</div>

<script src="/js/a/layui/layui.js"></script>
<script src="/js/a/js/marked.min.js"></script>

<script th:inline="javascript">
    var SSE_ENDPOINT = /*[[${sseEndpoint}]]*/ '/js/a/ai/chat';
</script>

<script>
    /* ===== DOM ===== */
    var welcomeView = document.getElementById('welcomeView');
    var chatView = document.getElementById('chatView');
    var messagesWrap = document.getElementById('messagesWrap');
    var welcomeInput = document.getElementById('welcomeInput');
    var welcomeSendBtn = document.getElementById('welcomeSendBtn');
    var chatInput = document.getElementById('chatInput');
    var chatSendBtn = document.getElementById('chatSendBtn');
    // var themeBtn = document.getElementById('themeBtn');
    var themeIcon = document.getElementById('themeIcon');
    var newChatBtn = document.getElementById('newChatBtn');
    var historyList = document.getElementById('historyList');
    var modelConfigBtn = document.getElementById('modelConfigBtn');
    var modelConfigModal = document.getElementById('modelConfigModal');
    var modelConfigCloseBtn = document.getElementById('modelConfigCloseBtn');
    var modelCancelBtn = document.getElementById('modelCancelBtn');
    var modelSaveBtn = document.getElementById('modelSaveBtn');
    var providerCodeSelect = document.getElementById('providerCode');
    var modelConfigForm = document.getElementById('modelConfigForm');
    var modelIdInput = document.getElementById('modelId');
    var modelNameInput = document.getElementById('modelName');
    var apiHostInput = document.getElementById('apiHost');
    var apiKeyInput = document.getElementById('apiKey');
    var hasUseInput = document.getElementById('hasUse');

    /* ===== Constants ===== */
    var DOTS_HTML = '<span class="thinking-dots"><span></span><span></span><span></span></span>';
    var CHAT_MODEL_CATEGORY = 'chat';
    var SINGLE_MODEL_ID = '1';

    /* ===== Per-Session State ===== */
    function SessionState(sessionId) {
        this.sessionId = sessionId;
        this.container = document.createElement('div');
        this.container.className = 'messages-inner';
        this.container.style.display = 'none';
        messagesWrap.appendChild(this.container);
        this.eventSource = null;
        this.isStreaming = false;
        this.currentBubbleEl = null;
        this.reasonBuffer = '';
        this.thinkingBlockEl = null;
        this.thinkingBodyMdEl = null;
        this.thinkingBodyWrapEl = null;
        this.thinkingBuffer = '';
        this.pendingToolCard = null;
        this.thinkingEl = null;
        this.inlineThinkingEl = null;
        this.silenceTimer = null;
        this.contentRafId = null;
        this.reasonRafId = null;
    }

    var sessionMap = {};
    var activeSessionId = null;

    /* ===== Global State ===== */
    var SESSION_ID = 'web-' + Date.now().toString(36);
    var isStreaming = false;
    var inChatMode = false;
    var chatHistory = [];
    var currentChatIndex = -1;
    var pendingImageBase64 = null;
    var pendingImageMime = null;
    var userScrolledUp = false;
    var providerOptions = [
        {providerCode: 'ollama', providerName: 'Ollama'},
        {providerCode: 'qwen', providerName: '千问'},
        {providerCode: 'DeepSeek', providerName: 'DeepSeek'}
    ];
    var modelConfigLoading = false;

    /* ===== Session Helpers ===== */
    function getOrCreateSession(sessionId) {
        if (!sessionMap[sessionId]) {
            sessionMap[sessionId] = new SessionState(sessionId);
        }
        return sessionMap[sessionId];
    }

    function setActiveSession(sessionId) {
        if (activeSessionId && sessionMap[activeSessionId]) {
            sessionMap[activeSessionId].container.style.display = 'none';
        }
        var sess = getOrCreateSession(sessionId);
        sess.container.style.display = '';
        activeSessionId = sessionId;
        SESSION_ID = sessionId;
        isStreaming = sess.isStreaming;
        userScrolledUp = false;
        if (isStreaming) setBtnStopMode();
        else setBtnSendMode();
    }

    function deactivateSession() {
        if (activeSessionId && sessionMap[activeSessionId]) {
            sessionMap[activeSessionId].container.style.display = 'none';
        }
        activeSessionId = null;
        isStreaming = false;
        setBtnSendMode();
    }

    function showMessage(message, type) {
        if (window.layui && layui.layer) {
            layui.layer.msg(message, {icon: type === 'error' ? 2 : 1, time: 1800});
            return;
        }
        alert(message);
    }

    function toggleModelModal(show) {
        modelConfigModal.classList.toggle('active', !!show);
        if (show) {
            document.body.style.overflow = 'hidden';
        } else {
            document.body.style.overflow = '';
        }
    }

    function resetModelForm() {
        modelConfigForm.reset();
        modelIdInput.value = SINGLE_MODEL_ID;
        document.getElementById('modelCategory').value = CHAT_MODEL_CATEGORY;
        hasUseInput.checked = true;
        if (providerCodeSelect.options.length > 0) {
            providerCodeSelect.selectedIndex = 0;
        }
    }

    function fillModelForm(model) {
        modelIdInput.value = model && model.id ? model.id : '';
        document.getElementById('modelCategory').value = model && model.category ? model.category : CHAT_MODEL_CATEGORY;
        modelNameInput.value = model && model.modelName ? model.modelName : '';
        apiHostInput.value = model && model.apiHost ? model.apiHost : '';
        apiKeyInput.value = model && model.apiKey ? model.apiKey : '';
        hasUseInput.checked = !model || model.hasUse == null ? true : Number(model.hasUse) === 1;
        providerCodeSelect.value = model && model.providerCode ? model.providerCode : '';
    }

    function renderProviderSelect() {
        var html = '<option value="">请选择服务商</option>';
        for (var i = 0; i < providerOptions.length; i++) {
            var item = providerOptions[i];
            html += '<option value="' + escapeHtml(item.providerCode || '') + '">' + escapeHtml(item.providerName || item.providerCode || '') + '</option>';
        }
        providerCodeSelect.innerHTML = html;
    }

    function httpGetJson(url, callback, onError) {
        var xhr = new XMLHttpRequest();
        xhr.open('GET', url, true);
        xhr.onreadystatechange = function () {
            if (xhr.readyState !== 4) return;
            if (xhr.status >= 200 && xhr.status < 300) {
                try {
                    callback(JSON.parse(xhr.responseText));
                } catch (e) {
                    console.log(e)
                    if (onError) onError(e);
                }
                return;
            }
            if (onError) onError(xhr);
        };
        xhr.send();
    }

    function unwrapResponse(payload) {
        if (!payload || typeof payload !== 'object') {
            return payload;
        }
        if (Object.prototype.hasOwnProperty.call(payload, 'data')) {
            return payload.data;
        }
        return payload;
    }

    function loadModelConfigData(done) {
        if (modelConfigLoading) return;
        modelConfigLoading = true;
        var pending = 1;
        var failed = false;

        function finish() {
            pending--;
            if (pending > 0) return;
            modelConfigLoading = false;
            if (!failed && done) done();
        }

        function handleError() {
            failed = true;
            modelConfigLoading = false;
            showMessage('加载模型配置失败', 'error');
        }

        renderProviderSelect();

        httpGetJson('/js/a/ai/model/getInfo?id=' + encodeURIComponent(SINGLE_MODEL_ID), function (data) {
            resetModelForm();
            fillModelForm(unwrapResponse(data) || {});
            finish();
        }, handleError);
    }

    function openModelConfigModal() {
        loadModelConfigData(function () {
            toggleModelModal(true);
        });
    }

    function saveModelConfig() {
        var providerCode = providerCodeSelect.value.trim();
        var modelName = modelNameInput.value.trim();
        var apiHost = apiHostInput.value.trim();
        var apiKey = apiKeyInput.value.trim();
        if (!providerCode || !modelName || !apiHost || !apiKey) {
            showMessage('请完整填写服务商、模型名称、API Host 和 API Key', 'error');
            return;
        }

        modelSaveBtn.disabled = true;
        var params = new URLSearchParams();
        params.append('id', modelIdInput.value || SINGLE_MODEL_ID);
        params.append('category', CHAT_MODEL_CATEGORY);
        params.append('providerCode', providerCode);
        params.append('modelName', modelName);
        params.append('apiHost', apiHost);
        params.append('apiKey', apiKey);
        params.append('hasUse', hasUseInput.checked ? '1' : '0');

        fetch('/js/a/ai/create', {
            method: 'POST',
            headers: {'Content-Type': 'application/json; charset=UTF-8'},
            body: JSON.stringify(Object.fromEntries(params))
        }).then(function (resp) {
            if (!resp.ok) {
                throw new Error('save failed');
            }
            return resp.text();
        }).then(function () {
            showMessage('模型配置已保存');
            toggleModelModal(false);
        }).catch(function () {
            showMessage('保存模型配置失败', 'error');
        }).finally(function () {
            modelSaveBtn.disabled = false;
        });
    }

    /* ===== Image Paste ===== */
    var welcomeImgWrap = document.getElementById('welcomeImgWrap');
    var welcomeImgPreview = document.getElementById('welcomeImgPreview');
    var welcomeImgRemove = document.getElementById('welcomeImgRemove');
    var chatImgWrap = document.getElementById('chatImgWrap');
    var chatImgPreview = document.getElementById('chatImgPreview');
    var chatImgRemove = document.getElementById('chatImgRemove');

    function handlePasteImage(e) {
        var items = (e.clipboardData || e.originalEvent.clipboardData).items;
        for (var i = 0; i < items.length; i++) {
            if (items[i].type.indexOf('image') !== -1) {
                e.preventDefault();
                var file = items[i].getAsFile();
                var reader = new FileReader();
                reader.onload = function(evt) {
                    var dataUrl = evt.target.result;
                    var parts = dataUrl.split(',');
                    var meta = parts[0];
                    pendingImageBase64 = parts[1];
                    pendingImageMime = meta.match(/data:(.*?);/)[1];
                    showImagePreview(dataUrl);
                };
                reader.readAsDataURL(file);
                return;
            }
        }
    }

    function showImagePreview(dataUrl) {
        if (inChatMode) {
            chatImgPreview.src = dataUrl;
            chatImgWrap.classList.add('has-img');
        } else {
            welcomeImgPreview.src = dataUrl;
            welcomeImgWrap.classList.add('has-img');
        }
    }

    function clearImagePreview() {
        pendingImageBase64 = null;
        pendingImageMime = null;
        welcomeImgPreview.src = '';
        welcomeImgWrap.classList.remove('has-img');
        chatImgPreview.src = '';
        chatImgWrap.classList.remove('has-img');
    }

    modelConfigBtn.addEventListener('click', openModelConfigModal);
    modelConfigCloseBtn.addEventListener('click', function () {
        toggleModelModal(false);
    });
    modelCancelBtn.addEventListener('click', function () {
        toggleModelModal(false);
    });
    modelSaveBtn.addEventListener('click', saveModelConfig);
    // modelConfigModal.addEventListener('click', function (e) {
    //     if (e.target === modelConfigModal) {
    //         toggleModelModal(false);
    //     }
    // });
    document.addEventListener('keydown', function (e) {
        if (e.key === 'Escape' && modelConfigModal.classList.contains('active')) {
            toggleModelModal(false);
        }
    });

    welcomeInput.addEventListener('paste', handlePasteImage);
    chatInput.addEventListener('paste', handlePasteImage);
    welcomeImgRemove.addEventListener('click', clearImagePreview);
    chatImgRemove.addEventListener('click', clearImagePreview);

    /* ===== Quick Questions ===== */
    var welcomeQuickQs = document.getElementById('welcomeQuickQs');
    var chatQuickQs = document.getElementById('chatQuickQs');

    function loadQuickQuestions() {
        httpGetJson('/js/a/ai/qs', function (data) {
            var questions = unwrapResponse(data);
            if (!Array.isArray(questions) || questions.length === 0) return;
            renderQuickQChips(welcomeQuickQs, questions);
            renderQuickQChips(chatQuickQs, questions);
        });
    }

    function renderQuickQChips(container, questions) {
        container.innerHTML = '';
        for (var i = 0; i < questions.length; i++) {
            var chip = document.createElement('span');
            chip.className = 'quick-q-chip';
            chip.textContent = questions[i];
            chip.title = questions[i];
            chip.addEventListener('click', (function(q) {
                return function() {
                    if (inChatMode) {
                        chatInput.value = q;
                        chatInput.focus();
                        autoResize(chatInput);
                    } else {
                        welcomeInput.value = q;
                        welcomeInput.focus();
                        autoResize(welcomeInput);
                    }
                };
            })(questions[i]));
            container.appendChild(chip);
        }
    }

    loadQuickQuestions();

    /* ===== Marked ===== */
    if (typeof marked !== 'undefined') { marked.setOptions({ breaks: true, gfm: true }); }
    function renderMd(text) {
        if (typeof marked !== 'undefined') return marked.parse(text);
        return text.replace(/</g,'&lt;').replace(/>/g,'&gt;').replace(/\n/g,'<br>');
    }

    /* ===== Theme ===== */
    var currentTheme = localStorage.getItem('chat-theme') || 'light';
    document.body.setAttribute('data-theme', currentTheme);
/*    updateThemeIcon();
    themeBtn.addEventListener('click', function() {
        currentTheme = currentTheme === 'light' ? 'dark' : 'light';
        document.body.setAttribute('data-theme', currentTheme);
        localStorage.setItem('chat-theme', currentTheme);
        updateThemeIcon();
    });
    function updateThemeIcon() {
        themeIcon.innerHTML = currentTheme === 'light' ? '&#xe6c2;' : '&#xe748;';
        themeBtn.title = currentTheme === 'light' ? '切换至暗色' : '切换至浅色';
    }*/

    /* ===== View Switch ===== */
    function switchToChatMode() {
        if (inChatMode) return;
        inChatMode = true;
        welcomeView.style.display = 'none';
        chatView.classList.add('active');
        chatInput.focus();
    }
    function switchToWelcomeMode() {
        inChatMode = false;
        deactivateSession();
        welcomeView.style.display = '';
        chatView.classList.remove('active');
        welcomeInput.focus();
    }

    /* ===== Auto-resize ===== */
    function autoResize(el) {
        el.style.height = 'auto';
        el.style.height = Math.min(el.scrollHeight, 140) + 'px';
    }
    welcomeInput.addEventListener('input', function() { autoResize(this); });
    chatInput.addEventListener('input', function() { autoResize(this); });

    /* ===== Send from both inputs ===== */
    function getInputText() {
        if (inChatMode) return chatInput.value.trim();
        return welcomeInput.value.trim();
    }
    function clearInput() {
        if (inChatMode) { chatInput.value = ''; chatInput.style.height = 'auto'; }
        else { welcomeInput.value = ''; welcomeInput.style.height = 'auto'; }
    }

    welcomeInput.addEventListener('keydown', function(e) { if (e.key === 'Enter' && !e.shiftKey) { e.preventDefault(); sendMessage(); } });
    chatInput.addEventListener('keydown', function(e) { if (e.key === 'Enter' && !e.shiftKey) { e.preventDefault(); sendMessage(); } });
    welcomeSendBtn.addEventListener('click', function() { sendMessage(); });
    chatSendBtn.addEventListener('click', function() {
        if (isStreaming && activeSessionId && sessionMap[activeSessionId]) {
            finishStream(sessionMap[activeSessionId]);
        } else {
            sendMessage();
        }
    });

    /* ===== Click to focus ===== */
    document.querySelector('.welcome-input-box').addEventListener('click', function(e) {
        if (!e.target.closest('button')) welcomeInput.focus();
    });
    document.querySelector('.input-box').addEventListener('click', function(e) {
        if (!e.target.closest('button')) chatInput.focus();
    });

    /* ===== New Chat ===== */
    newChatBtn.addEventListener('click', function() {
        SESSION_ID = 'web-' + Date.now().toString(36);
        currentChatIndex = -1;
        switchToWelcomeMode();
        updateHistoryUI();
    });

    /* ===== Helpers ===== */
    messagesWrap.addEventListener('scroll', function() {
        var gap = messagesWrap.scrollHeight - messagesWrap.scrollTop - messagesWrap.clientHeight;
        userScrolledUp = gap > 80;
    });
    var scrollRafPending = false;
    function scrollToBottom(force) {
        if (!force && userScrolledUp) return;
        if (force) userScrolledUp = false;
        if (scrollRafPending) return;
        scrollRafPending = true;
        requestAnimationFrame(function() {
            scrollRafPending = false;
            messagesWrap.scrollTop = messagesWrap.scrollHeight;
        });
    }

    function resetStreamState(sess) {
        sess.currentBubbleEl = null;
        sess.reasonBuffer = '';
        sess.thinkingBlockEl = null;
        sess.thinkingBodyMdEl = null;
        sess.thinkingBodyWrapEl = null;
        sess.thinkingBuffer = '';
        if (sess.contentRafId) { cancelAnimationFrame(sess.contentRafId); sess.contentRafId = null; }
        if (sess.reasonRafId) { cancelAnimationFrame(sess.reasonRafId); sess.reasonRafId = null; }
    }

    function setBtnStopMode() {
        chatSendBtn.disabled = false;
        chatSendBtn.classList.add('stop-mode');
        chatSendBtn.innerHTML = '<div class="stop-icon"></div>';
        chatSendBtn.title = '停止生成';
    }
    function setBtnSendMode() {
        chatSendBtn.classList.remove('stop-mode');
        chatSendBtn.innerHTML = '<i class="layui-icon layui-icon-release"></i>';
        chatSendBtn.title = '发送';
        chatSendBtn.disabled = false;
    }

    /* ===== History ===== */
    function loadSessionHistory() {
        var xhr = new XMLHttpRequest();
        xhr.open('GET', '/js/a/chat/sessions', true);
        xhr.onreadystatechange = function() {
            if (xhr.readyState === 4 && xhr.status === 200) {
                try {
                    var result = JSON.parse(xhr.responseText);
                    var list = result.data;
                    chatHistory = [];
                    for (var i = 0; i < list.length; i++) {
                        chatHistory.push({ label: list[i].label, sessionId: list[i].sessionId });
                    }
                    updateHistoryUI();
                } catch (e) {}
            }
        };
        xhr.send();
    }

    function saveChatToHistory(firstMsg) {
        var label = firstMsg.length > 30 ? firstMsg.substring(0, 30) + '...' : firstMsg;
        for (var i = 0; i < chatHistory.length; i++) {
            if (chatHistory[i].sessionId === SESSION_ID) {
                currentChatIndex = i;
                updateHistoryUI();
                return;
            }
        }
        chatHistory.unshift({ label: label, sessionId: SESSION_ID });
        if (chatHistory.length > 50) chatHistory.pop();
        currentChatIndex = 0;
        updateHistoryUI();
    }

    /* Sidebar event delegation — single listener instead of per-item binding */
    historyList.addEventListener('click', function(e) {
        var delBtn = e.target.closest('.sidebar-item-del');
        if (delBtn) {
            e.stopPropagation();
            var idx = parseInt(delBtn.closest('.sidebar-item').getAttribute('data-idx'));
            if (!isNaN(idx)) deleteSession(idx);
            return;
        }
        var item = e.target.closest('.sidebar-item');
        if (item) {
            var idx = parseInt(item.getAttribute('data-idx'));
            if (!isNaN(idx)) selectSession(idx);
        }
    });

    function updateHistoryUI() {
        var frag = document.createDocumentFragment();
        for (var i = 0; i < chatHistory.length; i++) {
            var item = document.createElement('div');
            var sess = sessionMap[chatHistory[i].sessionId];
            var streaming = sess && sess.isStreaming;
            item.className = 'sidebar-item' + (i === currentChatIndex ? ' active' : '') + (streaming ? ' streaming' : '');
            item.setAttribute('data-idx', i);

            var label = document.createElement('span');
            label.className = 'sidebar-item-label';
            label.textContent = chatHistory[i].label;

            var delBtn = document.createElement('button');
            delBtn.className = 'sidebar-item-del';
            delBtn.title = '删除对话';
            delBtn.innerHTML = '<i class="layui-icon layui-icon-close"></i>';

            item.appendChild(label);
            if (streaming) {
                var spinner = document.createElement('span');
                spinner.className = 'sidebar-item-spinner';
                spinner.title = '对话进行中...';
                item.appendChild(spinner);
            }
            item.appendChild(delBtn);
            frag.appendChild(item);
        }
        historyList.innerHTML = '';
        historyList.appendChild(frag);
    }

    function deleteSession(idx) {
        var entry = chatHistory[idx];
        if (!entry) return;

        var xhr = new XMLHttpRequest();
        xhr.open('POST', '/js/a/chat/sessions/delete?sessionId=' + encodeURIComponent(entry.sessionId), true);
        xhr.onreadystatechange = function() {
            if (xhr.readyState === 4) {
                /* Clean up session state after server confirms */
                var sess = sessionMap[entry.sessionId];
                if (sess) {
                    if (sess.eventSource) sess.eventSource.close();
                    if (sess.silenceTimer) clearTimeout(sess.silenceTimer);
                    if (sess.contentRafId) cancelAnimationFrame(sess.contentRafId);
                    if (sess.reasonRafId) cancelAnimationFrame(sess.reasonRafId);
                    if (sess.container.parentNode) sess.container.parentNode.removeChild(sess.container);
                    delete sessionMap[entry.sessionId];
                }

                chatHistory.splice(idx, 1);

                if (idx === currentChatIndex) {
                    currentChatIndex = -1;
                    SESSION_ID = 'web-' + Date.now().toString(36);
                    switchToWelcomeMode();
                } else if (idx < currentChatIndex) {
                    currentChatIndex--;
                }

                updateHistoryUI();
            }
        };
        xhr.send();
    }

    function selectSession(idx) {
        if (idx === currentChatIndex && inChatMode) return;
        var entry = chatHistory[idx];
        if (!entry) return;

        currentChatIndex = idx;
        SESSION_ID = entry.sessionId;
        if (!inChatMode) switchToChatMode();
        setActiveSession(entry.sessionId);
        updateHistoryUI();

        var sess = sessionMap[entry.sessionId];
        /* Only load from server if not streaming and container has no content */
        if (!sess.isStreaming && sess.container.children.length === 0) {
            loadMessages(sess);
        } else {
            scrollToBottom(true);
        }
    }

    function loadMessages(sess) {
        var xhr = new XMLHttpRequest();
        xhr.open('GET', '/js/a/chat/messages?sessionId=' + encodeURIComponent(sess.sessionId), true);
        xhr.onreadystatechange = function() {
            if (xhr.readyState === 4 && xhr.status === 200) {
                try {
                    var result = JSON.parse(xhr.responseText);
                    var msgs = result.data;
                    sess.container.innerHTML = '';
                    resetStreamState(sess);
                    for (var i = 0; i < msgs.length; i++) {
                        var m = msgs[i];
                        if (m.role === 'USER') {
                            resetStreamState(sess);
                            appendUserMessage(sess, m.content);
                        } else if (m.role === 'ASSISTANT') {
                            var isConsecutive = (i > 0 && msgs[i - 1].role === 'ASSISTANT');
                            if (!isConsecutive) resetStreamState(sess);
                            var el = ensureAssistantBubble(sess);
                            sess.reasonBuffer = isConsecutive ? sess.reasonBuffer + '\n\n' + m.content : m.content;
                            el.innerHTML = renderMd(sess.reasonBuffer);
                        }
                    }
                    resetStreamState(sess);
                    if (sess.sessionId === activeSessionId) scrollToBottom(true);
                } catch (e) {}
            }
        };
        xhr.send();
    }

    /* Load on startup */
    loadSessionHistory();

    /* ===== Message Rendering (Session-Aware) ===== */
    function appendUserMessage(sess, text, imageDataUrl) {
        var row = document.createElement('div');
        row.className = 'msg-row user';
        row.innerHTML = '<div class="msg-bubble"></div><div class="msg-avatar">我</div>';
        var bubble = row.querySelector('.msg-bubble');
        if (imageDataUrl) {
            var img = document.createElement('img');
            img.src = imageDataUrl;
            img.style.cssText = 'max-height:120px;max-width:240px;border-radius:8px;display:block;margin-bottom:8px;';
            bubble.appendChild(img);
        }
        var span = document.createElement('span');
        span.textContent = text;
        bubble.appendChild(span);
        sess.container.appendChild(row);
        if (sess.sessionId === activeSessionId) scrollToBottom(true);
    }

    function ensureAssistantBubble(sess) {
        if (!sess.currentBubbleEl) {
            removeThinking(sess);
            var row = document.createElement('div');
            row.className = 'msg-row assistant';
            row.innerHTML = '<div class="msg-avatar"><i class="layui-icon layui-icon-bot" style="font-size:18px"></i></div>'
                + '<div class="msg-bubble"><div class="md-content"></div>'
                + '<div class="msg-actions">'
                + '<button class="msg-action-btn copy-btn" title="复制"><i class="layui-icon layui-icon-file"></i> 复制</button>'
                + '</div></div>';
            sess.container.appendChild(row);
            sess.currentBubbleEl = row.querySelector('.md-content');
            var copyBtn = row.querySelector('.copy-btn');
            var mdRef = sess.currentBubbleEl;
            copyBtn.addEventListener('click', function() {
                var txt = mdRef.innerText || '';
                if (navigator.clipboard) { navigator.clipboard.writeText(txt); }
            });
        }
        return sess.currentBubbleEl;
    }

    function ensureThinkingBlock(sess) {
        if (!sess.thinkingBlockEl) {
            ensureAssistantBubble(sess);
            var parent = sess.currentBubbleEl.parentNode;
            var block = document.createElement('div');
            block.className = 'thinking-block streaming expanded';
            block.innerHTML = '<div class="thinking-block-header">'
                + '<span class="thinking-block-label">思考中...</span>'
                + '<span class="thinking-block-dots"><span></span><span></span><span></span></span>'
                + '<i class="layui-icon layui-icon-right thinking-block-toggle"></i>'
                + '</div>'
                + '<div class="thinking-block-body"><div class="md-content"></div></div>';
            parent.insertBefore(block, sess.currentBubbleEl);
            block.querySelector('.thinking-block-header').addEventListener('click', function() {
                block.classList.toggle('expanded');
            });
            sess.thinkingBlockEl = block;
            sess.thinkingBodyMdEl = block.querySelector('.thinking-block-body .md-content');
            sess.thinkingBodyWrapEl = block.querySelector('.thinking-block-body');
            sess.thinkingBuffer = '';
        }
        return sess.thinkingBlockEl;
    }

    function insertBeforeActions(sess, el) {
        var parent = sess.currentBubbleEl.parentNode;
        parent.insertBefore(el, parent.querySelector('.msg-actions'));
    }

    function finishThinkingBlock(sess) {
        if (sess.thinkingBlockEl) {
            if (sess.reasonRafId) {
                cancelAnimationFrame(sess.reasonRafId);
                sess.reasonRafId = null;
                if (sess.thinkingBodyMdEl) {
                    sess.thinkingBodyMdEl.innerHTML = renderMd(sess.thinkingBuffer);
                }
            }
            sess.thinkingBlockEl.classList.remove('streaming', 'expanded');
            var label = sess.thinkingBlockEl.querySelector('.thinking-block-label');
            if (label) label.textContent = '思考结束';
            var dots = sess.thinkingBlockEl.querySelector('.thinking-block-dots');
            if (dots) dots.remove();
            sess.thinkingBlockEl = null;
            sess.thinkingBodyMdEl = null;
            sess.thinkingBodyWrapEl = null;
            sess.thinkingBuffer = '';
        }
    }

    function clearThinkTags(text) {
        return text.replace(/<\s*\/?think\s*>/gi, '');
    }

    function appendReasonChunk(sess, text) {
        removeThinking(sess);
        ensureThinkingBlock(sess);
        sess.thinkingBuffer += clearThinkTags(text);
        if (!sess.reasonRafId) {
            sess.reasonRafId = requestAnimationFrame(function() {
                sess.reasonRafId = null;
                if (!sess.thinkingBlockEl) return;
                if (sess.thinkingBodyMdEl) {
                    sess.thinkingBodyMdEl.innerHTML = renderMd(sess.thinkingBuffer);
                }
                if (sess.thinkingBodyWrapEl) {
                    sess.thinkingBodyWrapEl.scrollTop = sess.thinkingBodyWrapEl.scrollHeight;
                }
                if (sess.sessionId === activeSessionId) scrollToBottom();
            });
        }
    }

    function finishPendingTool(sess) {
        if (sess.pendingToolCard) {
            var icon = sess.pendingToolCard.querySelector('.tool-status-icon');
            if (icon) { icon.className = 'tool-status-icon done'; icon.innerHTML = '<i class="layui-icon layui-icon-ok" style="font-size:12px"></i>'; }
            var label = sess.pendingToolCard.querySelector('.tool-label');
            if (label) label.textContent = '已完成';
            sess.pendingToolCard = null;
        }
    }

    function appendActionEndChunk(sess, toolName, text) {
        finishPendingTool(sess);
        ensureAssistantBubble(sess);

        var card = document.createElement('div');
        card.className = 'tool-card';
        card.innerHTML = '<div class="tool-card-header">'
            + '<span class="tool-status-icon loading"></span>'
            + '<span class="tool-name">' + escapeHtml(toolName || 'tool') + '</span>'
            + '<span class="tool-label">执行中...</span>'
            + '<i class="layui-icon layui-icon-right tool-toggle"></i>'
            + '</div>'
            + '<div class="tool-card-body"></div>';

        card.querySelector('.tool-card-body').textContent = text || '';
        card.querySelector('.tool-card-header').addEventListener('click', function() {
            card.classList.toggle('expanded');
        });

        insertBeforeActions(sess, card);
        sess.pendingToolCard = card;

        sess.reasonBuffer = '';
        var newMd = document.createElement('div');
        newMd.className = 'md-content';
        insertBeforeActions(sess, newMd);
        sess.currentBubbleEl = newMd;
        if (sess.sessionId === activeSessionId) scrollToBottom();
    }

    function appendContentChunk(sess, text, append) {
        var clean = clearThinkTags(text);
        sess.reasonBuffer = append ? sess.reasonBuffer + clean : clean;
        if (!sess.contentRafId) {
            sess.contentRafId = requestAnimationFrame(function() {
                sess.contentRafId = null;
                var el = ensureAssistantBubble(sess);
                el.innerHTML = renderMd(sess.reasonBuffer);
                if (sess.sessionId === activeSessionId) scrollToBottom();
            });
        }
    }

    function appendErrorChunk(sess, text) {
        ensureAssistantBubble(sess);
        var errEl = document.createElement('div');
        errEl.className = 'chunk-error';
        errEl.textContent = text;
        insertBeforeActions(sess, errEl);
        if (sess.sessionId === activeSessionId) scrollToBottom();
    }

    /* ===== Thinking Indicators ===== */
    function showThinking(sess) {
        removeThinking(sess);
        sess.thinkingEl = document.createElement('div');
        sess.thinkingEl.className = 'thinking-row';
        sess.thinkingEl.innerHTML = '<div class="msg-avatar" style="background:linear-gradient(135deg,var(--accent),#a78bfa);color:#fff">'
            + '<i class="layui-icon layui-icon-bot" style="font-size:18px"></i></div>'
            + '<div class="thinking-bubble">思考中' + DOTS_HTML + '</div>';
        sess.container.appendChild(sess.thinkingEl);
        if (sess.sessionId === activeSessionId) scrollToBottom(true);
    }
    function removeThinking(sess) {
        if (sess.thinkingEl && sess.thinkingEl.parentNode) { sess.thinkingEl.parentNode.removeChild(sess.thinkingEl); sess.thinkingEl = null; }
    }

    function showInlineThinking(sess) {
        if (sess.inlineThinkingEl || !sess.currentBubbleEl) return;
        sess.inlineThinkingEl = document.createElement('div');
        sess.inlineThinkingEl.className = 'inline-thinking';
        sess.inlineThinkingEl.innerHTML = '思考中 ' + DOTS_HTML;
        insertBeforeActions(sess, sess.inlineThinkingEl);
        if (sess.sessionId === activeSessionId) scrollToBottom();
    }
    function removeInlineThinking(sess) {
        if (sess.inlineThinkingEl && sess.inlineThinkingEl.parentNode) { sess.inlineThinkingEl.parentNode.removeChild(sess.inlineThinkingEl); }
        sess.inlineThinkingEl = null;
    }

    /* ===== HITL ===== */
    function appendHitlCard(sess, toolName, command) {
        ensureAssistantBubble(sess);

        var card = document.createElement('div');
        card.className = 'hitl-card';
        card.innerHTML = '<div class="hitl-card-header">'
            + '<i class="layui-icon layui-icon-tips"></i> \u9700\u8981\u6388\u6743'
            + '</div>'
            + '<div class="hitl-card-body">'
            + '<div class="hitl-tool">\u5de5\u5177: <strong>' + escapeHtml(toolName || 'unknown') + '</strong></div>'
            + (command ? '<div class="hitl-command">' + escapeHtml(command) + '</div>' : '')
            + '</div>'
            + '<div class="hitl-card-actions">'
            + '<button class="hitl-btn hitl-btn-approve">\u6279\u51c6</button>'
            + '<button class="hitl-btn hitl-btn-reject">\u62d2\u7edd</button>'
            + '</div>';

        insertBeforeActions(sess, card);

        var approveBtn = card.querySelector('.hitl-btn-approve');
        var rejectBtn = card.querySelector('.hitl-btn-reject');

        approveBtn.addEventListener('click', function() {
            approveBtn.disabled = true;
            rejectBtn.disabled = true;
            approveBtn.textContent = '\u5df2\u6279\u51c6';
            rejectBtn.style.display = 'none';
            card.style.borderColor = '#22c55e';
            handleHitlResponse(sess, 'approve');
        });

        rejectBtn.addEventListener('click', function() {
            approveBtn.disabled = true;
            rejectBtn.disabled = true;
            rejectBtn.textContent = '\u5df2\u62d2\u7edd';
            approveBtn.style.display = 'none';
            card.style.borderColor = '#ef4444';
            handleHitlResponse(sess, 'reject');
        });

        if (sess.sessionId === activeSessionId) scrollToBottom();
    }

    function escapeHtml(str) {
        var div = document.createElement('div');
        div.textContent = str;
        return div.innerHTML;
    }

    function handleHitlResponse(sess, action) {
        if (sess.eventSource) { sess.eventSource.close(); sess.eventSource = null; }
        resetStreamState(sess);

        sess.isStreaming = true;
        if (sess.sessionId === activeSessionId) {
            isStreaming = true;
            setBtnStopMode();
        }

        var url = SSE_ENDPOINT + '?hitlAction=' + encodeURIComponent(action)
            + '&sessionId=' + encodeURIComponent(sess.sessionId);

        sess.eventSource = new EventSource(url);
        sess.eventSource.onmessage = function(event) { handleSSEData(sess, event.data); };
        sess.eventSource.onerror = function() { finishStream(sess); };
    }

    /* ===== Send ===== */
    function sendMessage() {
        var text = getInputText();
        if (!text && !pendingImageBase64) return;
        /* Block only if the active session is currently streaming */
        if (activeSessionId && sessionMap[activeSessionId] && sessionMap[activeSessionId].isStreaming) return;
        if (!text) text = '请描述这张图片';

        var imageDataUrl = pendingImageBase64 ? ('data:' + pendingImageMime + ';base64,' + pendingImageBase64) : null;
        var imageBase64 = pendingImageBase64;
        var imageMime = pendingImageMime;

        if (currentChatIndex === -1) {
            SESSION_ID = 'web-' + Date.now().toString(36);
            saveChatToHistory(text);
        }

        clearInput();
        clearImagePreview();
        if (!inChatMode) switchToChatMode();
        setActiveSession(SESSION_ID);

        var sess = sessionMap[SESSION_ID];

        appendUserMessage(sess, text, imageDataUrl);

        sess.isStreaming = true;
        isStreaming = true;
        setBtnStopMode();
        resetStreamState(sess);
        showThinking(sess);

        if (imageBase64) {
            sendWithFetch(sess, text, imageBase64, imageMime);
        } else {
            sendWithEventSource(sess, text);
        }
    }

    function sendWithEventSource(sess, text) {
        if (sess.eventSource) { sess.eventSource.close(); sess.eventSource = null; }
        var url = SSE_ENDPOINT + '?input=' + encodeURIComponent(text)
            + '&sessionId=' + encodeURIComponent(sess.sessionId);

        sess.eventSource = new EventSource(url);
        sess.eventSource.onmessage = function(event) { handleSSEData(sess, event.data); };
        sess.eventSource.onerror = function() { finishStream(sess); };
    }

    function sendWithFetch(sess, text, imageBase64, imageMime) {
        if (sess.eventSource) { sess.eventSource.close(); sess.eventSource = null; }
        var body = JSON.stringify({ input: text, sessionId: sess.sessionId, imageBase64: imageBase64, imageMime: imageMime });
        var abortCtrl = new AbortController();
        sess.eventSource = { close: function() { abortCtrl.abort(); } };

        fetch(SSE_ENDPOINT, {
            method: 'POST',
            headers: { 'Content-Type': 'application/json' },
            signal: abortCtrl.signal,
            body: body
        }).then(function(resp) {
            var reader = resp.body.getReader();
            var decoder = new TextDecoder();
            var buffer = '';

            function pump() {
                reader.read().then(function(result) {
                    if (result.done) { finishStream(sess); return; }
                    buffer += decoder.decode(result.value, { stream: true });
                    var lines = buffer.split('\n');
                    buffer = lines.pop();
                    for (var i = 0; i < lines.length; i++) {
                        var line = lines[i].trim();
                        if (line.startsWith('data:')) {
                            var raw = line.substring(5).trim();
                            handleSSEData(sess, raw);
                        }
                    }
                    pump();
                }).catch(function() { finishStream(sess); });
            }
            pump();
        }).catch(function() { finishStream(sess); });
    }

    /* ===== SSE Data Handling (Session-Aware) ===== */
    function handleSSEData(sess, raw) {
        if (raw === '[DONE]') { finishStream(sess); return; }
        try {
            var chunk = JSON.parse(raw);
            if (sess.silenceTimer) clearTimeout(sess.silenceTimer);
            removeInlineThinking(sess);
            switch (chunk.type) {
                case 'reason': finishPendingTool(sess); appendReasonChunk(sess, chunk.text); break;
                case 'text':   finishThinkingBlock(sess); finishPendingTool(sess); appendContentChunk(sess, chunk.text, true); break;
                case 'action': finishThinkingBlock(sess); appendActionEndChunk(sess, chunk.toolName, chunk.text); break;
                case 'agent':  finishThinkingBlock(sess); finishPendingTool(sess); appendContentChunk(sess, chunk.text, false); break;
                case 'error':  finishThinkingBlock(sess); appendErrorChunk(sess, chunk.text); break;
                case 'hitl':   finishThinkingBlock(sess); finishPendingTool(sess); appendHitlCard(sess, chunk.toolName, chunk.command); break;
            }
            sess.silenceTimer = setTimeout(function() {
                if (sess.isStreaming && !sess.thinkingBlockEl) showInlineThinking(sess);
            }, 1000);
        } catch (e) {
            console.error('SSE数据解析失败:', raw, e);
        }
    }

    function finishStream(sess) {
        sess.isStreaming = false;
        if (sess.silenceTimer) { clearTimeout(sess.silenceTimer); sess.silenceTimer = null; }
        removeThinking(sess);
        removeInlineThinking(sess);
        finishThinkingBlock(sess);
        finishPendingTool(sess);
        if (sess.eventSource) { sess.eventSource.close(); sess.eventSource = null; }
        resetStreamState(sess);
        if (sess.sessionId === activeSessionId) {
            isStreaming = false;
            setBtnSendMode();
            chatInput.focus();
        }
        loadSessionHistory();
    }
</script>
</body>
</html>