// ==UserScript==
// @name         LGSinLG
// @namespace    https://www.luogu.com.cn/user/1816684
// @version      1.0.19
// @description  支持将个人主页、文章、剪贴板通过洛谷保存站API嵌入到国内站当中
// @author       https://www.luogu.com.cn/user/1816684
// @match        *://*.luogu.com.cn/*
// @grant        GM_xmlhttpRequest
// @grant        GM_setValue
// @grant        GM_getValue
// @license MIT
// ==/UserScript==

(function() {
    'use strict';

    console.log('[LGSinLG] 脚本启动，版本 1.0.19', new Date().toISOString());

    window.addEventListener('unhandledrejection', function(event) {
        console.error('[LGSinLG] 未捕获的 Promise 拒绝:', event.reason);
        console.error('[LGSinLG] 当前 URL:', location.href);
        if (event.reason && event.reason.stack) {
            console.error('[LGSinLG] 堆栈:', event.reason.stack);
        }
    });

    if (window.self !== window.top) return;
    if (window.__LGSinLG_script_running) return;
    window.__LGSinLG_script_running = true;

    const USER_CONFIG = {
        templatePasteId: 'o1lvqcmv',
        templateArticleId: 'omfzy7i3',
        colorMap: {
            'Green': '#52c41a',
            'Blue': '#3498db',
            'Red': '#e74c3c',
            'Orange': '#f39c12',
            'Purple': '#9b59b6',
            'Gray': '#95a5a6',
            'Cheater': '#e74c3c',
        },
        categoryMap: {
            1: '个人纪录',
            2: '题解',
            3: '科技·工程',
            4: '算法·理论',
            5: '生活·游记',
            6: '学习·文化课',
            7: '休闲·娱乐',
            8: '闲话'
        }
    };

    // Shiki 代码块专用样式
    const SHIKI_CSS = `
        .shiki, .shiki span {
            color: var(--shiki-light, #24292e);
        }
        .shiki {
            background-color: var(--shiki-light-bg, #f6f8fa);
        }
        @media (prefers-color-scheme: dark) {
            .shiki, .shiki span {
                color: var(--shiki-dark, #c9d1d9);
            }
            .shiki {
                background-color: var(--shiki-dark-bg, #0d1117);
            }
        }
        pre.shiki {
            padding: 16px;
            border-radius: 8px;
            border: 1px solid #d0d7de;
            background-color: #f6f8fa !important;
            overflow-x: auto;
            font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
            font-size: 13px;
            line-height: 1.5;
            tab-size: 4;
            margin: 1em 0;
        }
        @media (prefers-color-scheme: dark) {
            pre.shiki {
                background-color: #0d1117 !important;
                border-color: #30363d;
            }
        }
        .shiki {
            counter-reset: line;
        }
        .shiki .line::before {
            counter-increment: line;
            content: counter(line);
            display: inline-block;
            width: 2em;
            margin-right: 1em;
            text-align: right;
            color: #8c959f;
            user-select: none;
        }
        @media (prefers-color-scheme: dark) {
            .shiki .line::before {
                color: #484f58;
            }
        }
        .code-line.highlight {
            background: rgba(255, 229, 100, 0.25);
        }
        .md-block.info,
        .md-block.warning,
        .md-block.success,
        .md-block.error {
            border: 0 solid rgba(228, 228, 228, 0);
            border-left-width: 6px;
            padding: 10px;
            margin: 12px 0;
        }
        .md-block.info { border-left-color: #7da7ff; }
        .md-block.warning { border-left-color: #ffb454; }
        .md-block.success { border-left-color: #4dd27a; }
        .md-block.error { border-left-color: #ff5757; }
        .md-block > .md-block-title {
            font-weight: 700;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: inherit;
            margin-bottom: 4px;
            position: relative;
            padding-left: 1.8em;
        }
        .md-block.info > .md-block-title { color: #7da7ff; }
        .md-block.warning > .md-block-title { color: #ffb454; }
        .md-block.success > .md-block-title { color: #4dd27a; }
        .md-block.error > .md-block-title { color: #ff5757; }
        .md-block > .md-block-body { margin-top: 4px; }
        .md-block > .md-block-body > p:last-child { margin-bottom: 0; }
        .md-block > .md-block-title::before {
            content: '';
            display: inline-block;
            width: 1em;
            height: 1em;
            background-color: currentColor;
            -webkit-mask-repeat: no-repeat;
            mask-repeat: no-repeat;
            -webkit-mask-size: contain;
            mask-size: contain;
            position: absolute;
            left: 0.2em;
            top: 50%;
            transform: translateY(-50%);
        }
        .md-block.success > .md-block-title::before {
            -webkit-mask-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg"%20viewBox="0 0 512 512"><path d="M256 512A256 256 0 1 0 256 0a256 256 0 1 0 0 512zM369 209L241 337c-9.4 9.4-24.6 9.4-33.9 0l-64-64c-9.4-9.4-9.4-24.6 0-33.9s24.6-9.4 33.9 0l47 47L335 175c9.4-9.4 24.6-9.4 33.9 0s9.4 24.6 0 33.9z"/></svg>');
            mask-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg"%20viewBox="0 0 512 512"><path d="M256 512A256 256 0 1 0 256 0a256 256 0 1 0 0 512zM369 209L241 337c-9.4 9.4-24.6 9.4-33.9 0l-64-64c-9.4-9.4-9.4-24.6 0-33.9s24.6-9.4 33.9 0l47 47L335 175c9.4-9.4 24.6-9.4 33.9 0s9.4 24.6 0 33.9z"/></svg>');
        }
        .md-block.warning > .md-block-title::before {
            -webkit-mask-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg"%20viewBox="0 0 512 512"><path d="M256 512A256 256 0 1 0 256 0a256 256 0 1 0 0 512zm0-384c13.3 0 24 10.7 24 24V264c0 13.3-10.7 24-24 24s-24-10.7-24-24V152c0-13.3 10.7-24 24-24zM224 352a32 32 0 1 1 64 0 32 32 0 1 1 -64 0z"/></svg>');
            mask-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg"%20viewBox="0 0 512 512"><path d="M256 512A256 256 0 1 0 256 0a256 256 0 1 0 0 512zm0-384c13.3 0 24 10.7 24 24V264c0 13.3-10.7 24-24 24s-24-10.7-24-24V152c0-13.3 10.7-24 24-24zM224 352a32 32 0 1 1 64 0 32 32 0 1 1 -64 0z"/></svg>');
        }
        .md-block.info > .md-block-title::before {
            -webkit-mask-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg"%20viewBox="0 0 512 512"><path d="M256 512A256 256 0 1 0 256 0a256 256 0 1 0 0 512zM216 336h24V272H216c-13.3 0-24-10.7-24-24s10.7-24 24-24h48c13.3 0 24 10.7 24 24v88h8c13.3 0 24 10.7 24 24s-10.7 24-24 24H216c-13.3 0-24-10.7-24-24s10.7-24 24-24zm40-208a32 32 0 1 1 0 64 32 32 0 1 1 0-64z"/></svg>');
            mask-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg"%20viewBox="0 0 512 512"><path d="M256 512A256 256 0 1 0 256 0a256 256 0 1 0 0 512zM216 336h24V272H216c-13.3 0-24-10.7-24-24s10.7-24 24-24h48c13.3 0 24 10.7 24 24v88h8c13.3 0 24 10.7 24 24s-10.7 24-24 24H216c-13.3 0-24-10.7-24-24s10.7-24 24-24zm40-208a32 32 0 1 1 0 64 32 32 0 1 1 0-64z"/></svg>');
        }
        .md-block.error > .md-block-title::before {
            -webkit-mask-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg"%20viewBox="0 0 512 512"><path d="M256 512A256 256 0 1 0 256 0a256 256 0 1 0 0 512zM175 175c9.4-9.4 24.6-9.4 33.9 0l47 47 47-47c9.4-9.4 24.6-9.4 33.9 0s9.4 24.6 0 33.9l-47 47 47 47c9.4 9.4 9.4 24.6 0 33.9s-24.6 9.4-33.9 0l-47-47-47 47c-9.4 9.4-24.6 9.4-33.9 0s-9.4-24.6 0-33.9l47-47-47-47c-9.4-9.4-9.4-24.6 0-33.9z"/></svg>');
            mask-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg"%20viewBox="0 0 512 512"><path d="M256 512A256 256 0 1 0 256 0a256 256 0 1 0 0 512zM175 175c9.4-9.4 24.6-9.4 33.9 0l47 47 47-47c9.4-9.4 24.6-9.4 33.9 0s9.4 24.6 0 33.9l-47 47 47 47c9.4 9.4 9.4 24.6 0 33.9s-24.6 9.4-33.9 0l-47-47-47 47c-9.4 9.4-24.6 9.4-33.9 0s-9.4-24.6 0-33.9l47-47-47-47c-9.4-9.4-9.4-24.6 0-33.9z"/></svg>');
        }
        .heading-pin-icon {
            width: 18px;
            height: 18px;
            stroke-width: 2;
        }
        .md-block-title {
            cursor: pointer;
            user-select: none;
        }
        .toggle-icon {
            display: inline-block;
            transition: transform 0.25s;
            margin-left: 0.5em;
            font-size: 0.9em;
            line-height: 1;
            flex-shrink: 0;
        }
        .toggle-icon.collapsed {
            transform: rotate(-90deg);
        }
        .shiki-wrapper {
            position: relative;
        }
        .shiki-copy-btn {
            position: absolute;
            top: 8px;
            right: 8px;
            background: rgba(0,0,0,0.05);
            border: 1px solid #d0d7de;
            border-radius: 4px;
            padding: 2px 8px;
            font-size: 12px;
            cursor: pointer;
            opacity: 0;
            transition: opacity 0.2s;
            z-index: 5;
        }
        .shiki-wrapper:hover .shiki-copy-btn {
            opacity: 1;
        }
        @media (prefers-color-scheme: dark) {
            .shiki-copy-btn {
                background: rgba(255,255,255,0.05);
                border-color: #30363d;
            }
        }
        /* 行号边距微调 */
        .shiki .line {
            display: block;
            padding-left: 3.5em;  /* 为行号留出固定空间，原来的 ::before 用了 2em + margin-right 1em，这里再加一点内边距 */
            text-indent: -3.5em;  /* 让行号向左突出，保持代码对齐 */
        }
        pre:not(.shiki) {
            background-color: #f6f8fa !important;
            border-color: #d0d7de;
        }
        @media (prefers-color-scheme: dark) {
            pre:not(.shiki) {
                background-color: #0d1117 !important;
                border-color: #30363d;
            }
        }
    `;

    // ---------- 工具函数 ----------
    function getUserIdFromUrl() {
        const m = location.pathname.match(/^\/user\/(\d+)\/?$/);
        return m ? m[1] : null;
    }
    function getPasteIdFromUrl() {
        const m = location.pathname.match(/\/paste\/([a-zA-Z0-9]+)/);
        return m ? m[1] : null;
    }
    function getArticleIdFromUrl() {
        const m = location.pathname.match(/\/article\/([a-zA-Z0-9]+)/);
        return m ? m[1] : null;
    }

    function parseApiTime(rawTime) {
        if (!rawTime) return null;
        if (typeof rawTime === 'number') {
            return new Date(rawTime * 1000).toISOString();
        }
        if (typeof rawTime === 'string') {
            const d = new Date(rawTime);
            if (!isNaN(d.getTime())) return d.toISOString();
        }
        return null;
    }

    function formatTime(isoStr) {
        if (!isoStr) return '未知';
        const d = new Date(isoStr);
        if (isNaN(d.getTime())) return '未知';
        const pad = n => String(n).padStart(2, '0');
        return `${d.getFullYear()}-${pad(d.getMonth()+1)}-${pad(d.getDate())} ${pad(d.getHours())}:${pad(d.getMinutes())}`;
    }

    function getRelativeTime(isoStr) {
        if (!isoStr) return '';
        const now = new Date();
        const d = new Date(isoStr);
        const diff = now - d;
        const seconds = Math.floor(diff / 1000);
        if (seconds < 60) return '刚刚';
        const minutes = Math.floor(seconds / 60);
        if (minutes < 60) return `${minutes} 分钟前`;
        const hours = Math.floor(minutes / 60);
        if (hours < 24) return `${hours} 小时前`;
        const days = Math.floor(hours / 24);
        if (days < 30) return `${days} 天前`;
        const months = Math.floor(days / 30);
        if (months < 12) return `${months} 个月前`;
        const years = Math.floor(months / 12);
        return `${years} 年前`;
    }

    function constrainImages(container) {
        if (!container) return;
        const imgs = container.querySelectorAll('img');
        imgs.forEach(img => {
            img.style.maxWidth = '100%';
            img.style.height = 'auto';
        });
    }

    function forceExternalLinks(container) {
        if (!container) return;
        const links = container.querySelectorAll('a');
        links.forEach(a => {
            let href = a.getAttribute('href');
            if (!href) return;
            if (href.startsWith('#')) return;
            if (href.startsWith('/')) {
                href = `https://www.luogu.com.cn${href}`;
                a.setAttribute('href', href);
            }
            a.setAttribute('rel', 'noopener noreferrer');
        });
    }

    function createClickableUsername(name, color, userId) {
        const span = document.createElement('span');
        span.style.cssText = `font-weight: bold; color: ${color}; cursor: pointer;`;
        span.textContent = name;
        span.addEventListener('click', function(e) {
            e.preventDefault();
            window.top.location.href = `/user/${userId}`;
        });
        return span;
    }

    function injectShikiCSS(doc) {
        if (!doc || !doc.head) return;
        const style = doc.createElement('style');
        style.textContent = SHIKI_CSS;
        doc.head.appendChild(style);
        console.log('[LGSinLG] Shiki 代码块样式已注入');
    }

    function addMdBlockToggle(doc) {
        if (!doc || !doc.body) return;
        const blocks = doc.querySelectorAll('.md-block');
        blocks.forEach(block => {
            const title = block.querySelector('.md-block-title');
            if (!title || title.dataset.toggleBound) return;
            const body = block.querySelector('.md-block-body');
            if (!body) return;
            const icon = doc.createElement('span');
            icon.className = 'toggle-icon';
            icon.textContent = '▸';
            title.appendChild(icon);
            title.addEventListener('click', () => {
                const collapsed = icon.classList.toggle('collapsed');
                body.style.display = collapsed ? 'none' : '';
            });
            title.style.cursor = 'pointer';
            title.dataset.toggleBound = 'true';
        });
        console.log('[LGSinLG] md-block 折叠功能已激活');
    }

    function addShikiCopyButtons(doc) {
        if (!doc || !doc.body) return;
        const allPres = doc.querySelectorAll('pre');
        allPres.forEach(pre => {
            // 避免重复处理
            if (pre.parentElement && pre.parentElement.classList.contains('shiki-wrapper')) return;
            if (pre.dataset.lgsCopyProcessed) return;
            pre.dataset.lgsCopyProcessed = 'true';

            // 包裹 wrapper
            const wrapper = doc.createElement('div');
            wrapper.className = 'shiki-wrapper';
            pre.parentNode.insertBefore(wrapper, pre);
            wrapper.appendChild(pre);

            // 对非 shiki 的 pre 添加基础外框样式（仅当没有 shiki 类时）
            if (!pre.classList.contains('shiki')) {
                pre.style.padding = '16px';
                pre.style.borderRadius = '6px';
                pre.style.border = '1px solid #d0d7de';
                pre.style.backgroundColor = '#f6f8fa';
                pre.style.overflowX = 'auto';
                pre.style.fontFamily = 'monospace';
                pre.style.fontSize = '14px';
                pre.style.lineHeight = '1.6';
                pre.style.margin = '1em 0';
                pre.style.display = 'block';
            }

            // 添加复制按钮（逻辑不变）
            const btn = doc.createElement('button');
            btn.className = 'shiki-copy-btn';
            btn.textContent = '复制';
            btn.addEventListener('click', () => {
                const code = pre.textContent || '';
                navigator.clipboard.writeText(code).then(() => {
                    btn.textContent = '已复制';
                    setTimeout(() => { btn.textContent = '复制'; }, 2000);
                }).catch(() => {
                    const ta = doc.createElement('textarea');
                    ta.value = code;
                    ta.style.position = 'fixed';
                    ta.style.opacity = '0';
                    doc.body.appendChild(ta);
                    ta.select();
                    doc.execCommand('copy');
                    doc.body.removeChild(ta);
                    btn.textContent = '已复制';
                    setTimeout(() => { btn.textContent = '复制'; }, 2000);
                });
            });
            wrapper.appendChild(btn);
        });
        console.log('[LGSinLG] 代码块复制按钮已添加（无行号修改）');
    }

    // ---------- 个人介绍卡片 ----------
    const CARD_ID = 'lgsinlg-intro-card';

    function isAdminUser() {
        const rows = document.querySelectorAll('.l-flex-info-row');
        for (const row of rows) {
            const span = row.querySelector('span');
            if (span && span.textContent.trim() === '用户类型') {
                const right = row.querySelector('.right');
                if (right && right.textContent.trim() === '管理员') return true;
            }
        }
        return false;
    }

    function removeUserCardIfExists() {
        const card = document.getElementById(CARD_ID);
        if (card) card.remove();
    }

    function getLoginUid() {
        const selectors = [
            '.lfe-header a[href^="/user/"]',
            '.header a[href^="/user/"]',
            'a[href^="/user/"].avatar-link',
            'a[href^="/user/"].user-link',
            '.user-menu a[href^="/user/"]',
            '.avatar a[href^="/user/"]',
            'nav a[href^="/user/"]',
            '.navbar a[href^="/user/"]',
            '.app-header a[href^="/user/"]'
        ];
        for (const sel of selectors) {
            const el = document.querySelector(sel);
            if (el) {
                const match = el.getAttribute('href').match(/\/user\/(\d+)/);
                if (match) {
                    console.log('[LGSinLG] getLoginUid 匹配到:', sel, 'ID:', match[1]);
                    return match[1];
                }
            }
        }
        console.warn('[LGSinLG] getLoginUid 未找到登录用户ID');
        return null;
    }

    function getOrCreateCard(uid) {
        if (isAdminUser()) return null;
        let card = document.getElementById(CARD_ID);
        if (card && card.dataset.uid === uid) {
            return { card, contentDiv: card.querySelector('.lfe-marked-wrap.introduction'), refreshBtn: card.querySelector('button') };
        }
        if (card) card.remove();

        const container = document.querySelector('.sidebar-container > .main');
        if (!container) return null;
        const templateCard = container.querySelector('.l-card');
        if (!templateCard) return null;

        card = document.createElement('div');
        card.id = CARD_ID;
        card.dataset.uid = uid;
        card.className = templateCard.className;
        for (const attr of templateCard.attributes) {
            if (attr.name.startsWith('data-v-')) card.setAttribute(attr.name, attr.value);
        }

        const header = document.createElement('div');
        header.className = 'header';
        header.style.cssText = 'display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px;';
        const h3 = document.createElement('h3');
        h3.style.margin = '0'; h3.textContent = '个人介绍';

        const editSpan = document.createElement('span');
        editSpan.className = 'edit-button';
        const refreshBtn = document.createElement('button');
        refreshBtn.className = 'lform-size-small';
        refreshBtn.type = 'button';
        refreshBtn.textContent = '更新';

        const style = refreshBtn.style;
        style.appearance = 'button';
        style.backgroundColor = 'rgba(52,152,219,0)';
        style.backgroundImage = 'none';
        style.borderColor = 'rgb(52,152,219)';
        style.borderRadius = '3px';
        style.borderStyle = 'solid';
        style.borderWidth = '1px';
        style.boxSizing = 'border-box';
        style.color = 'rgb(52,152,219)';
        style.cursor = 'pointer';
        style.display = 'block';
        style.fontFamily = '-apple-system, "system-ui", "Helvetica Neue", "PingFang SC", "Noto Sans", "Noto Sans SC", "Source Sans Pro", "Source Han Sans", "Segoe UI", Arial, "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif';
        style.fontSize = '14px';
        style.fontWeight = '400';
        style.lineHeight = '21px';
        style.margin = '0';
        style.minWidth = '44px';
        style.outline = 'none';
        style.overflow = 'visible';
        style.padding = '2px 12px';
        style.textAlign = 'center';
        style.textIndent = '0';
        style.textShadow = 'none';
        style.textTransform = 'none';
        style.verticalAlign = 'middle';
        style.wordSpacing = '0';

        editSpan.appendChild(refreshBtn);
        header.appendChild(h3);
        header.appendChild(editSpan);
        card.appendChild(header);

        const contentDiv = document.createElement('div');
        contentDiv.className = 'lfe-marked-wrap introduction';
        contentDiv.style.cssText = 'overflow-wrap: break-word; word-break: break-all;';
        card.appendChild(contentDiv);
        container.appendChild(card);

        refreshBtn.addEventListener('click', () => handleRefresh(uid, refreshBtn, contentDiv));
        return { card, contentDiv, refreshBtn };
    }

    function fetchAndUpdateCard(uid) {
        if (isAdminUser()) { removeUserCardIfExists(); return; }

        const elements = getOrCreateCard(uid);
        if (!elements) {
            if (!fetchAndUpdateCard._retryCount) fetchAndUpdateCard._retryCount = 0;
            if (fetchAndUpdateCard._retryCount < 10) {
                fetchAndUpdateCard._retryCount++;
                setTimeout(() => fetchAndUpdateCard(uid), 300);
            } else {
                console.warn('[LGSinLG] 卡片容器多次重试仍未出现，放弃');
                fetchAndUpdateCard._retryCount = 0;
            }
            return;
        }
        fetchAndUpdateCard._retryCount = 0;

        elements.contentDiv.innerHTML = '加载中...';
        GM_xmlhttpRequest({
            method: 'GET',
            url: `https://api.luogu.me/user/query/${uid}`,
            onload: function(res) {
                try {
                    const data = JSON.parse(res.responseText);
                    if (data.code === 200 && data.data) {
                        const intro = data.data.renderedIntroduction || '<p>暂无个人介绍</p>';
                        elements.contentDiv.innerHTML = intro;
                        constrainImages(elements.contentDiv);
                        // 移除 heading-anchor 锚点
                        const headingAnchors = elements.contentDiv.querySelectorAll('a.heading-anchor');
                        headingAnchors.forEach(a => a.remove());
                    } else {
                        elements.contentDiv.innerHTML = '<p>获取简介失败</p>';
                    }
                } catch (e) {
                    elements.contentDiv.innerHTML = '<p>数据解析错误</p>';
                }
            },
            onerror: function() {
                elements.contentDiv.innerHTML = '<p>网络请求失败</p>';
            }
        });
    }

    function handleRefresh(uid, btn, contentDiv) {
        if (btn.disabled) return;
        btn.textContent = '已发送';
        btn.disabled = true;
        GM_xmlhttpRequest({
            method: 'POST',
            url: `https://api.luogu.me/user/${uid}/refresh`,
            onload: function(res) {
                try {
                    const data = JSON.parse(res.responseText);
                    if (data.code === 200) {
                        GM_xmlhttpRequest({
                            method: 'GET',
                            url: `https://api.luogu.me/user/query/${uid}`,
                            onload: function(resp) {
                                try {
                                    const p = JSON.parse(resp.responseText);
                                    if (p.code === 200 && p.data) {
                                        contentDiv.innerHTML = p.data.renderedIntroduction || '<p>暂无个人介绍</p>';
                                        constrainImages(contentDiv);
                                        // 刷新后同样移除 heading-anchor
                                        const headingAnchors = contentDiv.querySelectorAll('a.heading-anchor');
                                        headingAnchors.forEach(a => a.remove());
                                    } else {
                                        contentDiv.innerHTML = '<p>获取简介失败</p>';
                                    }
                                } catch (e) {
                                    contentDiv.innerHTML = '<p>数据解析错误</p>';
                                }
                                btn.textContent = '更新'; btn.disabled = false;
                            },
                            onerror: function() {
                                contentDiv.innerHTML = '<p>网络请求失败</p>';
                                btn.textContent = '更新'; btn.disabled = false;
                            }
                        });
                    } else {
                        btn.textContent = '更新'; btn.disabled = false;
                    }
                } catch (e) {
                    btn.textContent = '更新'; btn.disabled = false;
                }
            },
            onerror: function() {
                btn.textContent = '更新'; btn.disabled = false;
            }
        });
    }

    // ---------- 接管流程公共部分 ----------
    function waitForIframeLoad(iframe, timeoutMs = 20000) {
        return new Promise((resolve, reject) => {
            const timer = setTimeout(() => {
                console.warn('[LGSinLG] iframe 加载超时');
                reject(new Error('iframe 加载超时'));
            }, timeoutMs);
            const onLoad = () => { clearTimeout(timer); resolve(); };
            const onError = () => {
                console.warn('[LGSinLG] iframe 加载失败');
                clearTimeout(timer);
                reject(new Error('iframe 加载失败'));
            };
            iframe.addEventListener('load', onLoad, { once: true });
            iframe.addEventListener('error', onError, { once: true });
            try {
                const doc = iframe.contentDocument || iframe.contentWindow.document;
                if (doc && doc.readyState === 'complete') {
                    clearTimeout(timer);
                    resolve();
                }
            } catch (e) {}
        });
    }

    function setupLinkInterceptor(doc) {
        if (!doc || !doc.body) return;
        const handler = (e) => {
            const target = e.target.closest('a');
            if (!target) return;
            const href = target.getAttribute('href');
            if (!href || href.startsWith('#') || href.startsWith('javascript:')) return;
            if (target.closest('.avatar')) {
                console.log('[LGSinLG] 头像链接放行，不拦截');
                return;
            }
            e.preventDefault();
            e.stopPropagation();
            console.log('[LGSinLG] 顶层跳转:', href);
            window.top.location.href = href;
        };
        doc.body.removeEventListener('click', handler, true);
        doc.body.addEventListener('click', handler, true);
    }

    function handlePastePage(pasteId) {
        console.log('[LGSinLG] 进入剪切板接管，pasteId:', pasteId);
        if (pasteId === USER_CONFIG.templatePasteId) return;
        if (window.__LGSinLG_paste_handled) return;
        window.__LGSinLG_paste_handled = true;

        const oldIframe = document.getElementById('lgsinlg-paste-iframe');
        if (oldIframe) oldIframe.remove();

        document.body.innerHTML = `
            <div id="lgsinlg-loading" style="text-align:center; padding:50px;">加载中…</div>
            <div id="lgsinlg-error" style="display:none; text-align:center; padding:50px;">
                <p id="lgsinlg-error-msg"></p>
                <button id="lgsinlg-retry-btn" style="margin-top:20px; padding:8px 20px; background:#3498db; color:#fff; border:none; border-radius:4px; cursor:pointer;">重试</button>
            </div>
        `;
        document.getElementById('lgsinlg-retry-btn').addEventListener('click', () => location.reload());

        const iframe = document.createElement('iframe');
        iframe.id = 'lgsinlg-paste-iframe';
        iframe.setAttribute('sandbox', 'allow-same-origin allow-scripts allow-popups allow-popups-to-escape-sandbox allow-forms');
        iframe.style.cssText = 'position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; border: none; z-index: 9999; display: none;';
        document.body.appendChild(iframe);
        const iframeLoad = waitForIframeLoad(iframe, 20000);
        iframe.src = `https://www.luogu.com.cn/paste/${USER_CONFIG.templatePasteId}`;
        document.title = '云剪贴板 - 洛谷｜计算机教育新生态';

        const apiPromise = new Promise((resolve, reject) => {
            GM_xmlhttpRequest({
                method: 'GET',
                url: `https://api.luogu.me/paste/query/${pasteId}`,
                onload(res) {
                    try {
                        const data = JSON.parse(res.responseText);
                        if (data.code === 200 && data.data) resolve(data.data);
                        else reject(new Error(data.message || '接口返回错误'));
                    } catch (e) { reject(new Error('数据解析失败')); }
                },
                onerror() { reject(new Error('网络请求失败')); }
            });
        });

        function showError(msg, id, type) {
            document.getElementById('lgsinlg-loading').style.display = 'none';
            document.getElementById('lgsinlg-error').style.display = 'block';
            document.getElementById('lgsinlg-error-msg').textContent = msg;
            const oldSaveBtn = document.getElementById('lgsinlg-save-btn');
            if (oldSaveBtn) oldSaveBtn.remove();
            const saveBtn = document.createElement('button');
            saveBtn.id = 'lgsinlg-save-btn';
            saveBtn.style.cssText = 'margin-left: 10px; padding: 8px 20px; background: #52c41a; color: #fff; border: none; border-radius: 4px; cursor: pointer;';
            saveBtn.textContent = '保存';
            saveBtn.addEventListener('click', () => {
                executeWorkflow(saveBtn, id, type, () => location.reload());
            });
            document.getElementById('lgsinlg-error').appendChild(saveBtn);
            const ifr = document.getElementById('lgsinlg-paste-iframe');
            if (ifr) ifr.remove();
            window.__LGSinLG_paste_handled = false;
            window.__LGSinLG_active = false;
        }

        Promise.all([iframeLoad, apiPromise])
            .then(([_, pasteData]) => {
                console.log('[LGSinLG] 剪切板 iframe 和 API 加载完成');
                const performCoreReplace = () => {
                    let doc;
                    try {
                        doc = iframe.contentDocument || iframe.contentWindow.document;
                    } catch (e) {
                        handleAutoRefresh(e);
                        return false;
                    }
                    if (!doc) return false;
                    const markedDiv = doc.querySelector('.marked');
                    const timeCaption = doc.querySelector('.content-card-top .author .lfe-caption:not(.author-margin)');
                    const actionsDiv = doc.querySelector('.actions');
                    if (!markedDiv || !timeCaption || !actionsDiv) return false;
                    markedDiv.innerHTML = pasteData.renderedContent || '<p>暂无内容</p>';
                    constrainImages(markedDiv);
                    forceExternalLinks(markedDiv);
                    // 移除 heading-anchor 锚点
                    const headingAnchors = markedDiv.querySelectorAll('a.heading-anchor');
                    headingAnchors.forEach(a => a.remove());
                    injectShikiCSS(doc);
                    const authorCaption = doc.querySelector('.author .lfe-caption.author-margin');
                    if (authorCaption) {
                        const color = USER_CONFIG.colorMap[pasteData.author.color] || '#000';
                        authorCaption.innerHTML = '作者: ';
                        authorCaption.appendChild(createClickableUsername(pasteData.author.name, color, pasteData.author.id));
                    }
                    const createdTime = formatTime(pasteData.createdAt);
                    const updatedTime = formatTime(pasteData.updatedAt);
                    timeCaption.innerHTML = `发表时间: <time>${createdTime}</time> | 更新: <time>${updatedTime}</time>`;
                    const buttons = actionsDiv.querySelectorAll('button');
                    buttons.forEach(btn => { btn.style.display = 'none'; });
                    const updateBtn = document.createElement('button');
                    updateBtn.type = 'button'; updateBtn.textContent = '更新';
                    updateBtn.style.cssText = 'background: rgb(52, 152, 219); border: 1px solid rgb(52, 152, 219); border-radius: 3px; color: #fff; cursor: pointer; font-size: 14px; padding: 4px 12px;';
                    updateBtn.addEventListener('click', () => executeWorkflow(updateBtn, pasteId, 'paste'));
                    actionsDiv.appendChild(updateBtn);
                    return true;
                };
                let attempts = 0;
                const interval = setInterval(() => {
                    try {
                        if (performCoreReplace() || ++attempts >= 50) {
                            clearInterval(interval);
                            if (!performCoreReplace()) {
                                showError('页面结构加载超时', pasteId, 'paste');
                                return;
                            }
                            const doc = iframe.contentDocument || iframe.contentWindow.document;
                            setupLinkInterceptor(doc);
                            setupSourceObserver(doc, pasteData.content);
                            addMdBlockToggle(doc);
                            addShikiCopyButtons(doc);
                            document.getElementById('lgsinlg-loading').style.display = 'none';
                            iframe.style.display = '';
                            window.__LGSinLG_active = true;
                            console.log('[LGSinLG] 剪切板接管完成');
                        }
                    } catch (e) {
                        clearInterval(interval);
                        console.error('[LGSinLG] 剪切板轮询异常', e);
                        handleAutoRefresh(e);
                    }
                }, 200);
                function setupSourceObserver(doc, rawContent) {
                    const TARGET_SELECTOR = '.card.padding-default .code-card-top pre';
                    const PROCESSED_ATTR = 'data-lgs-processed';
                    const initialPre = doc.querySelector(TARGET_SELECTOR);
                    if (initialPre && !initialPre.hasAttribute(PROCESSED_ATTR)) {
                        initialPre.textContent = rawContent;
                        initialPre.setAttribute(PROCESSED_ATTR, 'true');
                    }
                    const observer = new MutationObserver(() => {
                        const pre = doc.querySelector(TARGET_SELECTOR);
                        if (pre && !pre.hasAttribute(PROCESSED_ATTR)) {
                            pre.textContent = rawContent;
                            pre.setAttribute(PROCESSED_ATTR, 'true');
                        }
                    });
                    observer.observe(doc.body, { childList: true, subtree: true });
                }
            })
            .catch(err => {
                console.error('[LGSinLG] 剪切板 Promise 异常', err);
                showError('该剪切板尚未被保存站收录', pasteId, 'paste');
            });
    }

    function handleArticlePage(articleId) {
        console.log('[LGSinLG] 进入文章接管，articleId:', articleId);
        if (articleId === USER_CONFIG.templateArticleId) return;
        if (window.__LGSinLG_article_handled) return;
        window.__LGSinLG_article_handled = true;

        document.body.innerHTML = `
            <div id="lgsinlg-loading" style="text-align:center; padding:50px;">加载中…</div>
            <div id="lgsinlg-error" style="display:none; text-align:center; padding:50px;">
                <p id="lgsinlg-error-msg"></p>
                <button id="lgsinlg-retry-btn" style="margin-top:20px; padding:8px 20px; background:#3498db; color:#fff; border:none; border-radius:4px; cursor:pointer;">重试</button>
            </div>
        `;
        document.getElementById('lgsinlg-retry-btn').addEventListener('click', () => location.reload());

        const iframe = document.createElement('iframe');
        iframe.id = 'lgsinlg-article-iframe';
        iframe.setAttribute('sandbox', 'allow-same-origin allow-scripts allow-popups allow-popups-to-escape-sandbox allow-forms');
        iframe.style.cssText = 'position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; border: none; z-index: 9999; display: none;';
        document.body.appendChild(iframe);
        const iframeLoad = waitForIframeLoad(iframe, 20000);
        iframe.src = `https://www.luogu.com.cn/article/${USER_CONFIG.templateArticleId}`;

        const apiPromise = new Promise((resolve, reject) => {
            GM_xmlhttpRequest({
                method: 'GET',
                url: `https://api.luogu.me/article/query/${articleId}`,
                onload(res) {
                    try {
                        const data = JSON.parse(res.responseText);
                        if (data.code === 200 && data.data) resolve(data.data);
                        else reject(new Error(data.message || '接口返回错误'));
                    } catch (e) { reject(new Error('数据解析失败')); }
                },
                onerror() { reject(new Error('网络请求失败')); }
            });
        });

        function showError(msg, id, type) {
            document.getElementById('lgsinlg-loading').style.display = 'none';
            document.getElementById('lgsinlg-error').style.display = 'block';
            document.getElementById('lgsinlg-error-msg').textContent = msg;
            const oldSaveBtn = document.getElementById('lgsinlg-save-btn');
            if (oldSaveBtn) oldSaveBtn.remove();
            const saveBtn = document.createElement('button');
            saveBtn.id = 'lgsinlg-save-btn';
            saveBtn.style.cssText = 'margin-left: 10px; padding: 8px 20px; background: #52c41a; color: #fff; border: none; border-radius: 4px; cursor: pointer;';
            saveBtn.textContent = '保存';
            saveBtn.addEventListener('click', () => {
                executeWorkflow(saveBtn, id, type, () => location.reload());
            });
            document.getElementById('lgsinlg-error').appendChild(saveBtn);
            const ifr = document.getElementById('lgsinlg-article-iframe');
            if (ifr) ifr.remove();
            window.__LGSinLG_article_handled = false;
            window.__LGSinLG_active = false;
        }

        Promise.all([iframeLoad, apiPromise])
            .then(([_, articleData]) => {
                console.log('[LGSinLG] 文章 iframe 和 API 加载完成，开始替换');
                document.title = (articleData.title || '文章') + ' - 洛谷专栏';
                const performCoreReplace = () => {
                    let doc;
                    try {
                        doc = iframe.contentDocument || iframe.contentWindow.document;
                    } catch (e) {
                        handleAutoRefresh(e);
                        return false;
                    }
                    if (!doc) return false;
                    const titleEl = doc.querySelector('h1') || doc.querySelector('.article-title') || doc.querySelector('[data-role="title"]');
                    const contentSelectors = ['.marked', 'article .content', '#article-content', '.article-body', '.post-content', '.entry-content', '[data-role="content"]', '.lfe-marked-wrap'];
                    let contentDiv = null;
                    for (const sel of contentSelectors) { contentDiv = doc.querySelector(sel); if (contentDiv) break; }
                    const authorContainer = doc.querySelector('.author') || doc.querySelector('[data-role="author"]');
                    let timeCaption = doc.querySelector('.article-banner .meta time[datetime]') || doc.querySelector('.article-banner time[datetime]');
                    const updateInfo = doc.querySelector('.update-info');
                    if (!contentDiv) return false;
                    if (titleEl) { titleEl.textContent = articleData.title; if (doc.title) doc.title = articleData.title; }
                    contentDiv.innerHTML = articleData.renderedContent || '<p>暂无内容</p>';
                    constrainImages(contentDiv);
                    forceExternalLinks(contentDiv);
                    // 移除 heading-anchor 锚点（文章接管中保留原有处理）
                    const headingAnchors = contentDiv.querySelectorAll('a.heading-anchor');
                    headingAnchors.forEach(a => a.remove());
                    injectShikiCSS(doc);
                    const headings = contentDiv.querySelectorAll('h1, h2, h3, h4, h5, h6');
                    headings.forEach((heading, index) => {
                        heading.id = `lgs-toc-${index}`;
                    });
                    const tocContainer = doc.querySelector('.toc');
                    if (tocContainer) {
                        const tocUl = tocContainer.querySelector('ul');
                        if (tocUl) {
                            const templateLi = tocUl.querySelector('li');
                            const templateSpan = templateLi ? templateLi.querySelector('span') : null;
                            tocUl.innerHTML = '';
                            if (headings.length > 0 && templateLi) {
                                headings.forEach((heading, index) => {
                                    const li = templateLi.cloneNode(false);
                                    li.className = `title-${parseInt(heading.tagName.charAt(1)) - 1}`;
                                    li.title = heading.textContent.trim();
                                    let span;
                                    if (templateSpan) {
                                        span = templateSpan.cloneNode(false);
                                    } else {
                                        span = document.createElement('span');
                                        for (const attr of li.attributes) {
                                            if (attr.name.startsWith('data-v-')) span.setAttribute(attr.name, attr.value);
                                        }
                                    }
                                    span.textContent = heading.textContent.trim();
                                    li.appendChild(span);
                                    li.addEventListener('click', (e) => {
                                        e.preventDefault();
                                        heading.scrollIntoView({ behavior: 'smooth', block: 'start' });
                                    });
                                    tocUl.appendChild(li);
                                });
                                tocContainer.style.display = '';
                            } else {
                                tocContainer.style.display = 'none';
                            }
                        }
                    }
                    if (authorContainer) {
                        const avatarImg = authorContainer.querySelector('.avatar');
                        if (avatarImg) avatarImg.src = `https://cdn.luogu.com.cn/upload/usericon/${articleData.author.id}.png`;
                        const userNameDiv = authorContainer.querySelector('.user-name');
                        if (userNameDiv) {
                            const color = USER_CONFIG.colorMap[articleData.author.color] || '#000';
                            userNameDiv.innerHTML = '';
                            userNameDiv.appendChild(createClickableUsername(articleData.author.name, color, articleData.author.id));
                        }
                        const badges = authorContainer.querySelectorAll('a[target="_blank"], .fa-badge-check');
                        badges.forEach(b => b.remove());
                    }
                    if (timeCaption) {
                        timeCaption.innerHTML = `发布于 ${formatTime(articleData.createdAt)} | 更新于 ${formatTime(articleData.updatedAt)}`;
                    }
                    if (updateInfo) {
                        updateInfo.innerHTML = '';
                        const authorSpan = document.createElement('span');
                        authorSpan.textContent = '作者：';
                        const color = USER_CONFIG.colorMap[articleData.author.color] || '#000';
                        authorSpan.appendChild(createClickableUsername(articleData.author.name, color, articleData.author.id));
                        updateInfo.appendChild(authorSpan);
                        const sep = document.createTextNode(' \u00a0\u00a0 ');
                        updateInfo.appendChild(sep);
                        const timeSpan = document.createElement('span');
                        timeSpan.textContent = '创建时间：';
                        const timeTag = document.createElement('time');
                        timeTag.setAttribute('datetime', articleData.createdAt);
                        timeTag.textContent = formatTime(articleData.createdAt);
                        timeSpan.appendChild(timeTag);
                        updateInfo.appendChild(timeSpan);
                    }
                    hijackActionButtons(doc, articleData, articleId);
                    function replaceCategory(doc, categoryId) {
                        const categoryName = USER_CONFIG.categoryMap[categoryId] || `分类${categoryId}`;
                        const labelDivs = doc.querySelectorAll('.label');
                        labelDivs.forEach(label => {
                            if (label.textContent.trim() === '分类') {
                                const parent = label.parentElement;
                                if (!parent) return;
                                const nextDiv = parent.querySelector(':scope > div:not(.label)');
                                if (nextDiv) {
                                    const span = nextDiv.querySelector('span');
                                    if (span) span.textContent = categoryName;
                                    else nextDiv.textContent = categoryName;
                                }
                            }
                        });
                        const categoryLinks = doc.querySelectorAll('a[href^="/article?category="]');
                        categoryLinks.forEach(link => {
                            link.textContent = categoryName;
                            link.href = `/article?category=${categoryId}`;
                        });
                    }
                    replaceCategory(doc, articleData.category);
                    return true;
                };
                let attempts = 0;
                const interval = setInterval(() => {
                    try {
                        if (performCoreReplace() || ++attempts >= 50) {
                            clearInterval(interval);
                            if (!performCoreReplace()) {
                                showError('页面结构加载超时', articleId, 'article');
                                return;
                            }
                            const doc = iframe.contentDocument || iframe.contentWindow.document;
                            setupLinkInterceptor(doc);
                            addMdBlockToggle(doc);
                            addShikiCopyButtons(doc);
                            const actionObserver = new MutationObserver(() => {
                                hijackActionButtons(doc, articleData, articleId);
                            });
                            actionObserver.observe(doc.body, { childList: true, subtree: true });
                            doc.addEventListener('click', function(e) {
                                const editorLink = e.target.closest('a[data-lgs-editor]');
                                if (!editorLink) return;
                                if (editorLink.hasAttribute('data-lgs-disabled')) {
                                    e.preventDefault();
                                    e.stopPropagation();
                                    return;
                                }
                                e.preventDefault();
                                e.stopPropagation();
                                editorLink.setAttribute('data-lgs-disabled', 'true');
                                executeWorkflow(editorLink, articleId, 'article');
                            }, true);
                            setupSourceObserver(doc, articleData.content);
                            document.getElementById('lgsinlg-loading').style.display = 'none';
                            iframe.style.display = '';
                            window.__LGSinLG_active = true;
                            console.log('[LGSinLG] 文章接管完成');
                            setupComments(doc, articleId);
                        }
                    } catch (e) {
                        clearInterval(interval);
                        console.error('[LGSinLG] 文章轮询异常', e);
                        handleAutoRefresh(e);
                    }
                }, 200);
                function setupSourceObserver(doc, rawContent) {
                    const TARGET_SELECTOR = '.card.padding-default .code-card-top pre';
                    const PROCESSED_ATTR = 'data-lgs-processed';
                    const initialPre = doc.querySelector(TARGET_SELECTOR);
                    if (initialPre && !initialPre.hasAttribute(PROCESSED_ATTR)) {
                        const innerDiv = initialPre.querySelector('div');
                        if (innerDiv) innerDiv.textContent = rawContent;
                        else initialPre.textContent = rawContent;
                        initialPre.setAttribute(PROCESSED_ATTR, 'true');
                    }
                    const observer = new MutationObserver(() => {
                        const pre = doc.querySelector(TARGET_SELECTOR);
                        if (pre && !pre.hasAttribute(PROCESSED_ATTR)) {
                            const innerDiv = pre.querySelector('div');
                            if (innerDiv) innerDiv.textContent = rawContent;
                            else pre.textContent = rawContent;
                            pre.setAttribute(PROCESSED_ATTR, 'true');
                        }
                    });
                    observer.observe(doc.body, { childList: true, subtree: true });
                }
            })
            .catch(err => {
                console.error('[LGSinLG] 文章 Promise 异常', err);
                showError('该文章尚未被保存站收录', articleId, 'article');
            });
    }

    // ---------- 评论区接管 ----------
    function fetchReplies(articleId, after = null) {
        let url = `https://www.luogu.com.cn/article/${articleId}/replies`;
        if (after !== null) url += `?after=${after}`;
        return fetch(url).then(res => {
            if (!res.ok) throw new Error(`评论接口 HTTP ${res.status}`);
            return res.json();
        }).then(data => data.replySlice || []);
    }

    function renderReplyFromTemplate(templateRow, reply, doc) {
        console.log('[LGSinLG] 渲染评论，原始数据:', reply);
        const row = templateRow.cloneNode(true);

        const avatar = row.querySelector('.avatar');
        if (avatar) avatar.src = `https://cdn.luogu.com.cn/upload/usericon/${reply.author.uid}.png`;

        const userLink = row.querySelector('.luogu-username a[href^="/user/"]');
        if (userLink) {
            userLink.href = `/user/${reply.author.uid}`;
            userLink.textContent = reply.author.name;
            userLink.style.color = USER_CONFIG.colorMap[reply.author.color] || '#333';
            userLink.addEventListener('click', (e) => {
                e.preventDefault();
                window.top.location.href = `/user/${reply.author.uid}`;
            });
        }

        const usernameContainer = row.querySelector('.luogu-username');
        if (usernameContainer) {
            const existingBadges = usernameContainer.querySelectorAll('a[target="_blank"], .svg-inline--fa.fa-badge-check');
            existingBadges.forEach(el => {
                const anchor = el.closest('a');
                if (anchor) anchor.remove();
                else el.remove();
            });
        }

        const timeEl = row.querySelector('time');
        if (timeEl) {
            const rawTime = reply.time || reply.createdAt || reply.createTime;
            const isoTime = parseApiTime(rawTime);
            timeEl.setAttribute('datetime', isoTime || '');
            timeEl.setAttribute('title', isoTime ? formatTime(isoTime) : '未知');
            timeEl.textContent = isoTime ? getRelativeTime(isoTime) : '';
        }

        const contentDiv = row.querySelector('.content');
        if (contentDiv) {
            const content = reply.content || reply.renderedContent || '';
            contentDiv.textContent = content;
            contentDiv.style.whiteSpace = 'pre-line';
            constrainImages(contentDiv);
            forceExternalLinks(contentDiv);
        }

        const deleteLink = row.querySelector('.meta a[href*="javascript:void"]');
        if (deleteLink) deleteLink.remove();

        return row;
    }

    function setupComments(doc, articleId) {
        const commentContainer = doc.querySelector('.article-comment');
        if (!commentContainer || commentContainer.dataset.lgsProcessed) return;
        commentContainer.dataset.lgsProcessed = 'true';

        // 禁用排序下拉
        const sortWrapper = commentContainer.querySelector('.combo-wrapper');
        if (sortWrapper) {
            sortWrapper.style.pointerEvents = 'none';
            sortWrapper.style.opacity = '0.5';
            sortWrapper.title = '评论区已接管，排序不可用';
        }

        // 禁用评论输入区域
        const textarea = commentContainer.querySelector('textarea');
        if (textarea) {
            const replyForm = textarea.closest('.l-card')
                           || textarea.closest('form')
                           || textarea.closest('.reply-box')
                           || textarea.closest('.comment-editor');
            if (replyForm) {
                replyForm.style.pointerEvents = 'none';
                replyForm.style.opacity = '0.5';
                replyForm.title = '评论区已由脚本接管，暂不支持发表';
            }
        }

        // 尝试移除原生加载更多（可能此时还未渲染）
        const nativeLoadMoreLink = commentContainer.querySelector('p[style*="text-align: center"] a[href="javascript:void 0"]');
        if (nativeLoadMoreLink && nativeLoadMoreLink.parentElement) {
            nativeLoadMoreLink.parentElement.remove();
        }

        const rowWrap = commentContainer.querySelector('.row-wrap');
        if (!rowWrap) return;

        const doInit = (templateRow) => {
            rowWrap.innerHTML = '';

            const countSpan = commentContainer.querySelector('.comment-filter-line span[style*="flex"]');
            if (countSpan) countSpan.textContent = '已加载 0 条评论';

            let allReplies = [];
            let lastId = null;
            let isLoading = false;

            function updateCount() {
                if (countSpan) countSpan.textContent = `已加载 ${allReplies.length} 条评论`;
            }

            function appendReplies(replies) {
                replies.forEach(reply => {
                    const el = renderReplyFromTemplate(templateRow, reply, doc);
                    rowWrap.appendChild(el);
                    allReplies.push(reply);
                });
                if (replies.length > 0) lastId = replies[replies.length - 1].id;
                updateCount();
                loadMoreBtn.style.display = replies.length === 0 ? 'none' : 'inline';
            }

            async function loadNextPage() {
                if (isLoading) return;
                isLoading = true;
                loadMoreBtn.textContent = '加载中…';
                try {
                    const replies = await fetchReplies(articleId, lastId);
                    appendReplies(replies);
                    if (replies.length === 0) loadMoreBtn.style.display = 'none';
                    else loadMoreBtn.textContent = '加载更多';
                } catch (e) {
                    console.error('[LGSinLG] 加载评论失败', e);
                    loadMoreBtn.textContent = '加载失败，点击重试';
                    loadMoreBtn.style.display = 'inline';
                } finally {
                    isLoading = false;
                }
            }

            function refreshComments() {
                rowWrap.innerHTML = '';
                allReplies = [];
                lastId = null;
                updateCount();
                loadMoreBtn.style.display = 'none';
                isLoading = false;
                fetchReplies(articleId).then(replies => {
                    appendReplies(replies);
                }).catch(err => {
                    console.error('[LGSinLG] 刷新评论失败', err);
                    if (countSpan) countSpan.textContent = '评论加载失败';
                });
            }

            let loadMoreBtn = doc.getElementById('lgs-load-more');
            if (!loadMoreBtn) {
                loadMoreBtn = doc.createElement('button');
                loadMoreBtn.id = 'lgs-load-more';
                loadMoreBtn.textContent = '加载更多';
                loadMoreBtn.style.display = 'none';
                loadMoreBtn.addEventListener('click', loadNextPage);

                loadMoreBtn.style.border = 'none';
                loadMoreBtn.style.backgroundColor = 'rgba(0, 0, 0, 0)';
                loadMoreBtn.style.color = 'rgb(52, 152, 219)';
                loadMoreBtn.style.cursor = 'pointer';
                loadMoreBtn.style.fontFamily = '-apple-system, "system-ui", "Helvetica Neue", "PingFang SC", "Noto Sans", "Noto Sans SC", "Source Sans Pro", "Source Han Sans", "Segoe UI", Arial, "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif';
                loadMoreBtn.style.fontSize = '16px';
                loadMoreBtn.style.height = 'auto';
                loadMoreBtn.style.lineHeight = '24px';
                loadMoreBtn.style.textAlign = 'center';
                loadMoreBtn.style.textDecoration = 'none';
                loadMoreBtn.style.width = 'auto';

                const wrapper = doc.createElement('p');
                wrapper.style.textAlign = 'center';
                wrapper.style.margin = '0';
                wrapper.appendChild(loadMoreBtn);
                commentContainer.appendChild(wrapper);
            }

            fetchReplies(articleId).then(replies => {
                appendReplies(replies);
            }).catch(err => {
                console.error('[LGSinLG] 初始评论加载失败', err);
                if (countSpan) countSpan.textContent = '评论加载失败，点击刷新重试';
            });

            // 持续监听并移除后出现的原生“加载更多”按钮
            const nativeCleaner = new MutationObserver(() => {
                const nativeLink = commentContainer.querySelector('p[style*="text-align: center"] a[href="javascript:void 0"]');
                if (nativeLink && nativeLink.parentElement) {
                    console.log('[LGSinLG] 移除后出现的原生加载更多按钮');
                    nativeLink.parentElement.remove();
                }
            });
            nativeCleaner.observe(commentContainer, { childList: true, subtree: true });
        };

        const templateRow = rowWrap.querySelector('.row');
        if (templateRow) {
            doInit(templateRow);
            return;
        }

        const observer = new MutationObserver((mutations, obs) => {
            const row = rowWrap.querySelector('.row');
            if (row) {
                obs.disconnect();
                doInit(row);
            }
        });
        observer.observe(rowWrap, { childList: true, subtree: true });
    }

    // ---------- 其他接管辅助函数 ----------
    function hijackActionButtons(doc, articleData, articleId) {
        const MARKER_EDIT = 'data-lgs-editor';
        const MARKER_LIKE = 'data-lgs-like';
        const MARKER_FAV = 'data-lgs-fav';
        const MARKER_DISLIKE = 'data-lgs-dislike';
        const actionDivs = doc.querySelectorAll('.actions');
        actionDivs.forEach(actionsDiv => {
            const allButtons = actionsDiv.querySelectorAll('.button-2line');
            allButtons.forEach(btn => {
                const rawText = (btn.querySelector('.text') || btn).textContent.trim();
                if (rawText === '收藏' && !btn.hasAttribute(MARKER_FAV)) {
                    const count = articleData.favorCount || 0;
                    const textSpan = btn.querySelector('.text');
                    if (textSpan) textSpan.textContent = count;
                    else btn.textContent = count;
                    btn.style.pointerEvents = 'none';
                    btn.style.opacity = '0.7';
                    btn.style.cursor = 'default';
                    const parentLink = btn.closest('a');
                    if (parentLink) {
                        parentLink.removeAttribute('href');
                        parentLink.style.pointerEvents = 'none';
                    }
                    btn.setAttribute(MARKER_FAV, 'true');
                } else if (rawText === '点赞' && !btn.hasAttribute(MARKER_LIKE)) {
                    const count = articleData.upvote || 0;
                    const textSpan = btn.querySelector('.text');
                    if (textSpan) textSpan.textContent = count;
                    else btn.textContent = count;
                    btn.style.pointerEvents = 'none';
                    btn.style.opacity = '0.7';
                    btn.style.cursor = 'default';
                    const parentLink = btn.closest('a');
                    if (parentLink) {
                        parentLink.removeAttribute('href');
                        parentLink.style.pointerEvents = 'none';
                    }
                    btn.setAttribute(MARKER_LIKE, 'true');
                } else if (rawText.startsWith('不推荐') && !btn.hasAttribute(MARKER_DISLIKE)) {
                    btn.style.pointerEvents = 'none';
                    btn.style.opacity = '0.7';
                    btn.style.cursor = 'default';
                    const parentLink = btn.closest('a');
                    if (parentLink) {
                        parentLink.removeAttribute('href');
                        parentLink.style.pointerEvents = 'none';
                    }
                    btn.setAttribute(MARKER_DISLIKE, 'true');
                }
            });
            const editLinks = actionsDiv.querySelectorAll('a[href*="/edit"]');
            editLinks.forEach(link => {
                if (link.hasAttribute(MARKER_EDIT)) return;
                link.removeAttribute('href');
                const textSpan = link.querySelector('.text');
                if (textSpan) textSpan.textContent = ' 更新 ';
                link.setAttribute(MARKER_EDIT, 'true');
            });
        });
    }

    function handleAutoRefresh(error) {
        console.error('[LGSinLG] handleAutoRefresh:', error && error.message);
        if (error && error.message && (error.message.includes('cross-origin') || error.message.includes('Blocked a frame'))) {
            console.warn('[LGSinLG] 跨域错误，刷新页面');
            location.reload();
        } else {
            console.warn('[LGSinLG] 非跨域错误，清理 iframe');
            const ifr = document.getElementById('lgsinlg-article-iframe') || document.getElementById('lgsinlg-paste-iframe');
            if (ifr) ifr.remove();
            if (document.getElementById('lgsinlg-article-iframe')) window.__LGSinLG_article_handled = false;
            if (document.getElementById('lgsinlg-paste-iframe')) window.__LGSinLG_paste_handled = false;
            window.__LGSinLG_active = false;
        }
    }

    // ---------- 公开工作流（无需 token） ----------
    function executeWorkflow(btn, targetId, type, onSuccess) {
        setButtonState(btn, '发送中...');
        const workflowName = type === 'article' ? 'article-save-pipeline' : 'paste-save-pipeline';
        GM_xmlhttpRequest({
            method: 'POST',
            url: `https://api.luogu.me/workflow/create/template/${workflowName}`,
            headers: {
                'Content-Type': 'application/json'
            },
            data: JSON.stringify({ targetId }),
            onload: function(res) {
                try {
                    const data = JSON.parse(res.responseText);
                    if (data.code === 200) {
                        resetButtonState(btn, '更新');
                        if (typeof onSuccess === 'function') onSuccess();
                    } else {
                        alert('工作流启动失败：' + (data.message || '未知错误'));
                        resetButtonState(btn, '更新');
                    }
                } catch (e) {
                    alert('响应解析失败');
                    resetButtonState(btn, '更新');
                }
            },
            onerror: function(err) {
                console.error('[LGSinLG] 网络错误', err);
                alert('网络错误，请稍后重试');
                resetButtonState(btn, '更新');
            }
        });
    }

    function setButtonState(btn, text) {
        const textSpan = btn.querySelector && btn.querySelector('.text');
        if (textSpan) textSpan.textContent = ` ${text} `;
        else btn.textContent = text;
        if (btn.tagName === 'BUTTON') btn.disabled = true;
        else btn.style.pointerEvents = 'none';
    }

    function resetButtonState(btn, text) {
        const textSpan = btn.querySelector && btn.querySelector('.text');
        if (textSpan) textSpan.textContent = ` ${text} `;
        else btn.textContent = text;
        if (btn.tagName === 'BUTTON') btn.disabled = false;
        else btn.style.pointerEvents = '';
        btn.removeAttribute('data-lgs-disabled');
    }

    // ---------- 路由与生命周期 ----------
    function cleanupTakeover() {
        console.log('[LGSinLG] 执行接管清理');
        if (waitForSecurityTimer) {
            clearTimeout(waitForSecurityTimer);
            waitForSecurityTimer = null;
        }
        window.__LGSinLG_active = false;
        window.__LGSinLG_paste_handled = false;
        window.__LGSinLG_article_handled = false;
        ['lgsinlg-paste-iframe', 'lgsinlg-article-iframe'].forEach(id => {
            const el = document.getElementById(id);
            if (el) el.remove();
        });
        const loading = document.getElementById('lgsinlg-loading');
        if (loading) loading.remove();
        const error = document.getElementById('lgsinlg-error');
        if (error) error.remove();
    }

    let currentPath = location.pathname;
    let pending = false;
    let waitForSecurityTimer = null;

    function recoverActiveIfNeeded() {
        const pasteIfr = document.getElementById('lgsinlg-paste-iframe');
        const articleIfr = document.getElementById('lgsinlg-article-iframe');
        if ((pasteIfr || articleIfr) && !window.__LGSinLG_active) {
            window.__LGSinLG_active = true;
            if (waitForSecurityTimer) {
                clearTimeout(waitForSecurityTimer);
                waitForSecurityTimer = null;
            }
        }
    }

    function isSecurityPage() {
        const warningTitle = document.querySelector('body > div:nth-child(1) > div > h3');
        return document.title === '安全访问中心 - 洛谷' && warningTitle && warningTitle.textContent.trim() === '即将离开洛谷';
    }

    function processRoute() {
        recoverActiveIfNeeded();
        console.log('[LGSinLG] processRoute active:', window.__LGSinLG_active, 'path:', location.pathname);
        if (window.__LGSinLG_active) {
            const currentPasteId = getPasteIdFromUrl();
            const currentArticleId = getArticleIdFromUrl();
            if ((currentPasteId && window.__LGSinLG_paste_handled) || (currentArticleId && window.__LGSinLG_article_handled)) {
                console.log('[LGSinLG] 仍在接管页面，忽略路由变化');
                return;
            }
            console.log('[LGSinLG] 接管已失效，清理并刷新');
            cleanupTakeover();
            location.reload();
            return;
        }
        // 移除 luogu.me 相关处理
        if (waitForSecurityTimer) {
            clearTimeout(waitForSecurityTimer);
            waitForSecurityTimer = null;
        }
        const pasteId = getPasteIdFromUrl();
        const articleId = getArticleIdFromUrl();
        if (pasteId) {
            console.log('[LGSinLG] 粘贴页 pasteId:', pasteId);
            if (isSecurityPage()) {
                handlePastePage(pasteId);
                return;
            }
            waitForSecurity(pasteId, 'paste');
            return;
        }
        if (articleId) {
            console.log('[LGSinLG] 文章页 articleId:', articleId);
            if (isSecurityPage()) {
                handleArticlePage(articleId);
                return;
            }
            waitForSecurity(articleId, 'article');
            return;
        }
        const uid = getUserIdFromUrl();
        if (uid) {
            const loginUid = getLoginUid();
            if (loginUid && loginUid === uid) {
                console.log('[LGSinLG] 自己的主页，跳过卡片');
                removeUserCardIfExists();
                return;
            }
            // 等待侧边栏容器就绪，否则稍后再试
            if (!document.querySelector('.sidebar-container > .main')) {
                setTimeout(() => processRoute(), 300);
                return;
            }
            fetchAndUpdateCard(uid);
            return;
        }
        console.log('[LGSinLG] 未匹配接管规则，清理遗留 iframe');
        removeUserCardIfExists();
        const pasteIfr = document.getElementById('lgsinlg-paste-iframe');
        if (pasteIfr) pasteIfr.remove();
        const articleIfr = document.getElementById('lgsinlg-article-iframe');
        if (articleIfr) articleIfr.remove();
        window.__LGSinLG_paste_handled = false;
        window.__LGSinLG_article_handled = false;
        window.__LGSinLG_active = false;
    }

    function waitForSecurity(id, type) {
        let attempts = 0;
        const maxAttempts = 100;
        const check = () => {
            if (isSecurityPage()) {
                console.log(`[LGSinLG] 安全页就绪，接管 ${type} ${id}`);
                if (type === 'paste') handlePastePage(id);
                else handleArticlePage(id);
                return;
            }
            if (++attempts < maxAttempts) {
                waitForSecurityTimer = setTimeout(check, 200);
            } else {
                console.warn(`[LGSinLG] 安全页等待超时，放弃接管`);
                waitForSecurityTimer = null;
                window.__LGSinLG_paste_handled = false;
                window.__LGSinLG_article_handled = false;
                window.__LGSinLG_active = false;
            }
        };
        check();
    }

    const observer = new MutationObserver(() => {
        if (pending || window.__LGSinLG_active) return;
        const newPath = location.pathname;
        if (newPath !== currentPath) {
            console.log('[LGSinLG] 路径变化:', currentPath, '->', newPath);
            currentPath = newPath;
            pending = true;
            requestAnimationFrame(() => {
                processRoute();
                pending = false;
            });
        }
    });
    const app = document.querySelector('.main-container');
    if (app) observer.observe(app, { childList: true, subtree: true });
    else observer.observe(document.body, { childList: true, subtree: true });

    window.addEventListener('popstate', () => {
        console.log('[LGSinLG] popstate 触发，新路径:', location.pathname);
        const errorDiv = document.getElementById('lgsinlg-error');
        if (errorDiv && errorDiv.style.display !== 'none') {
            location.reload();
            return;
        }
        currentPath = location.pathname;
        processRoute();
    });

    if (getPasteIdFromUrl() || getArticleIdFromUrl()) {
        processRoute();
    } else {
        let initTimer = setInterval(() => {
            const container = document.querySelector('.sidebar-container > .main, .full-container, main');
            if (container) {
                clearInterval(initTimer);
                processRoute();
            }
        }, 200);
    }
})();