// ==UserScript==
// @name         广建智能查寝 
// @namespace    http://tampermonkey.net/
// @version      12.3
// @description  解决了一些已知问题。
// @author       Security Researcher
// @license      MIT
// @match        *://xsgz.gdcvi.edu.cn/*
// @match        *://cas.gdcvi.edu.cn/lyuapServer/login*
// @match        *://*.map.qq.com/*
// @match        *://*.mapapi.qq.com/*
// @match        *://*.lbs.qq.com/*
// @match        *://*.3gimg.qq.com/*
// @run-at       document-start
// @grant        GM_getValue
// @grant        GM_setValue
// ==/UserScript==

(function() {
    'use strict';

    const D_LAT = 23.738999;
    const D_LNG = 113.0890105;

    const Store = {
        get: (k, d) => { try { return typeof GM_getValue === 'function' ? GM_getValue(k, d) : (parseFloat(localStorage.getItem(k)) || d); } catch(e) { return d; } },
        set: (k, v) => { try { if (typeof GM_setValue === 'function') GM_setValue(k, v); else localStorage.setItem(k, v); } catch(e) {} }
    };

    let F_LAT = Store.get('gdcvi_fake_lat', D_LAT);
    let F_LNG = Store.get('gdcvi_fake_lng', D_LNG);

    if (window === window.top) {
        setInterval(() => {
            const frames = document.querySelectorAll('iframe');
            frames.forEach(f => {
                try { if (f.contentWindow) f.contentWindow.postMessage({ type: 'SYNC_COORD', lat: F_LAT, lng: F_LNG }, '*'); } catch(err){}
            });
        }, 1000);
    }

    const mainWorldScript = function(initLat, initLng) {
        if(window.__CYBER_HOOK_ACTIVE__) return;
        window.__CYBER_HOOK_ACTIVE__ = true;

        let lat = parseFloat(initLat);
        let lng = parseFloat(initLng);

        window.addEventListener('message', (e) => {
            if (!e.data) return;
            if (e.data.type === 'SYNC_COORD') {
                lat = parseFloat(e.data.lat);
                lng = parseFloat(e.data.lng);
            } else if (e.data.type === 'PRIME_AUTO_CLICK') {
                window.__AUTO_CLICKED__ = true;
            }
        });

        const PI = 3.1415926535897932384626;
        const a = 6378245.0;
        const ee = 0.00669342162296594323;

        const transformLat = (x, y) => {
            let ret = -100.0 + 2.0 * x + 3.0 * y + 0.2 * y * y + 0.1 * x * y + 0.2 * Math.sqrt(Math.abs(x));
            ret += (20.0 * Math.sin(6.0 * x * PI) + 20.0 * Math.sin(2.0 * x * PI)) * 2.0 / 3.0;
            ret += (20.0 * Math.sin(y * PI) + 40.0 * Math.sin(y / 3.0 * PI)) * 2.0 / 3.0;
            ret += (160.0 * Math.sin(y / 12.0 * PI) + 320 * Math.sin(y * PI / 30.0)) * 2.0 / 3.0;
            return ret;
        };
        
        const transformLng = (x, y) => {
            let ret = 300.0 + x + 2.0 * y + 0.1 * x * x + 0.1 * x * y + 0.1 * Math.sqrt(Math.abs(x));
            ret += (20.0 * Math.sin(6.0 * x * PI) + 20.0 * Math.sin(2.0 * x * PI)) * 2.0 / 3.0;
            ret += (20.0 * Math.sin(x * PI) + 40.0 * Math.sin(x / 3.0 * PI)) * 2.0 / 3.0;
            ret += (150.0 * Math.sin(x / 12.0 * PI) + 300.0 * Math.sin(x / 30.0 * PI)) * 2.0 / 3.0;
            return ret;
        };
        
        const gcj02towgs84 = (lng, lat) => {
            let dlat = transformLat(lng - 105.0, lat - 35.0);
            let dlng = transformLng(lng - 105.0, lat - 35.0);
            let radlat = lat / 180.0 * PI;
            let magic = Math.sin(radlat);
            magic = 1 - ee * magic * magic;
            let sqrtmagic = Math.sqrt(magic);
            dlat = (dlat * 180.0) / ((a * (1 - ee)) / (magic * sqrtmagic) * PI);
            dlng = (dlng * 180.0) / (a / sqrtmagic * Math.cos(radlat) * PI);
            return [lng * 2 - (lng + dlng), lat * 2 - (lat + dlat)];
        };

        const getFakeData = () => {
            const jitter = () => (Math.random() - 0.5) * 0.00004;
            return { lat: lat + jitter(), lng: lng + jitter(), accuracy: 10 + Math.random() * 5 };
        };

        const origToString = Function.prototype.toString;
        Object.defineProperty(Function.prototype, 'toString', {
            value: new Proxy(origToString, {
                apply(target, thisArg, args) {
                    if (thisArg && thisArg.__cyber_name) return 'function ' + thisArg.__cyber_name + '() { [native code] }';
                    return Reflect.apply(target, thisArg, args);
                }
            }), configurable: true, writable: true
        });

        try {
            const origIframeSrcDesc = Object.getOwnPropertyDescriptor(HTMLIFrameElement.prototype, 'src');
            if (origIframeSrcDesc) {
                const newSet = new Proxy(origIframeSrcDesc.set, {
                    apply(target, thisArg, args) {
                        if (args[0] && typeof args[0] === 'string' && args[0].includes('geolocation')) args[0] = 'about:blank';
                        return Reflect.apply(target, thisArg, args);
                    }
                });
                newSet.__cyber_name = 'set src';
                Object.defineProperty(HTMLIFrameElement.prototype, 'src', { set: newSet, get: origIframeSrcDesc.get, configurable: origIframeSrcDesc.configurable, enumerable: origIframeSrcDesc.enumerable });
            }
        } catch(e) {}

        const hookW3C = (origMethod, name) => {
            if (typeof origMethod !== 'function') return origMethod;
            const proxy = new Proxy(origMethod, {
                apply(target, thisArg, args) {
                    const suc = args[0];
                    if (typeof suc === 'function') {
                        const fd = getFakeData();
                        const [wgsLng, wgsLat] = gcj02towgs84(fd.lng, fd.lat);
                        setTimeout(() => suc({coords:{latitude: wgsLat, longitude: wgsLng, accuracy: fd.accuracy}, timestamp:Date.now()}), 50);
                    }
                    return name === 'watchPosition' ? Math.floor(Math.random() * 10000) : undefined;
                }
            });
            proxy.__cyber_name = name;
            return proxy;
        };

        if (window.Geolocation && Geolocation.prototype) {
            try {
                Object.defineProperty(Geolocation.prototype, 'getCurrentPosition', {
                    value: hookW3C(Geolocation.prototype.getCurrentPosition, 'getCurrentPosition'),
                    configurable: false, writable: false
                });
                Object.defineProperty(Geolocation.prototype, 'watchPosition', {
                    value: hookW3C(Geolocation.prototype.watchPosition, 'watchPosition'),
                    configurable: false, writable: false
                });
            } catch(e) {}
        }

        if (navigator.geolocation) {
            try {
                const geoProxy = new Proxy(navigator.geolocation, {
                    get(target, prop) {
                        if (prop === 'getCurrentPosition') return hookW3C(target[prop], 'getCurrentPosition');
                        if (prop === 'watchPosition') return hookW3C(target[prop], 'watchPosition');
                        return typeof target[prop] === 'function' ? target[prop].bind(target) : target[prop];
                    }
                });
                Object.defineProperty(navigator, 'geolocation', { 
                    value: geoProxy, 
                    configurable: false, 
                    writable: false,
                    enumerable: true 
                });
            } catch(e) {}
        }

        const proxyCache = new WeakSet();
        const hookTencentGeo = (OrigGeo) => {
            if (proxyCache.has(OrigGeo)) return OrigGeo;
            const HookedGeo = new Proxy(OrigGeo, {
                construct(target, args) {
                    const instance = Reflect.construct(target, args);
                    if (proxyCache.has(instance)) return instance;
                    const InstanceProxy = new Proxy(instance, {
                        get(target2, prop) {
                            if (prop === 'getLocation' || prop === 'getIpLocation') {
                                const fakeMethod = function(suc) {
                                    if (suc) {
                                        const fd = getFakeData();
                                        setTimeout(() => suc({ module: 'geolocation', type: 'h5', lat: fd.lat, lng: fd.lng, accuracy: fd.accuracy, nation: '中国', province: '广东省', city: '清远市', adcode: '441802', __cyber_fake__: true }), 50);
                                    }
                                };
                                fakeMethod.__cyber_name = prop;
                                return fakeMethod;
                            }
                            const val = Reflect.get(target2, prop);
                            return typeof val === 'function' ? val.bind(target2) : val;
                        }
                    });
                    proxyCache.add(InstanceProxy);
                    return InstanceProxy;
                }
            });
            proxyCache.add(HookedGeo);
            return HookedGeo;
        };

        let _qq = window.qq;
        Object.defineProperty(window, 'qq', {
            get() {
                if (_qq && !proxyCache.has(_qq)) {
                    _qq = new Proxy(_qq, {
                        get(target, prop) {
                            if (prop === 'maps') {
                                const maps = Reflect.get(target, prop);
                                if (maps && !proxyCache.has(maps)) {
                                    const mapsProxy = new Proxy(maps, { get(target2, prop2) { return prop2 === 'Geolocation' ? hookTencentGeo(Reflect.get(target2, prop2)) : Reflect.get(target2, prop2); } });
                                    proxyCache.add(mapsProxy);
                                    return mapsProxy;
                                }
                            }
                            return Reflect.get(target, prop);
                        }
                    });
                    proxyCache.add(_qq);
                }
                return _qq;
            },
            set(v) { _qq = v; }, configurable: true
        });

        const origOpen = XMLHttpRequest.prototype.open;
        XMLHttpRequest.prototype.open = function(method, url) { this._method = method; this._url = url; return origOpen.apply(this, arguments); };
        const origSend = XMLHttpRequest.prototype.send;
        XMLHttpRequest.prototype.send = function() {
            this.addEventListener('load', function() {
                if (window.__AUTO_CLICKED__) {
                    try {
                        const res = JSON.parse(this.responseText);
                        let msg = res.message || res.msg || res.error || '';
                        if (!msg && (this._method || '').toUpperCase() === 'GET') return; 
                        let isSuccess = false;
                        if (msg.includes('成功')) { isSuccess = true; } 
                        else if (msg.match(/(失败|不在|未到|不允许|异常|无法|太远)/)) { isSuccess = false; } 
                        else { isSuccess = (res.code === 200 || res.code === 0 || res.success === true); }
                        if (!msg) msg = isSuccess ? '已完成' : '状态非预期';
                        
                        window.postMessage({ type: 'NOTIFY_TOAST', isSuccess, msg }, '*');
                        window.__AUTO_CLICKED__ = false;
                    } catch(e) {}
                }
            });
            return origSend.apply(this, arguments);
        };
    };

    const injectToMainWorld = () => {
        const script = document.createElement('script');
        script.textContent = '(' + mainWorldScript.toString() + `)(${F_LAT}, ${F_LNG});`;
        const target = document.head || document.documentElement;
        if (target) { target.appendChild(script); script.remove(); }
    };

    if (document.head || document.documentElement) injectToMainWorld();
    else {
        const obs = new MutationObserver(() => {
            if (document.head || document.documentElement) { obs.disconnect(); injectToMainWorld(); }
        });
        obs.observe(document, { childList: true, subtree: true });
    }

    const isMapEnv = () => {
        try {
            const h = window.location.hostname || '';
            return h.includes('qq.com') || h.includes('tencent') || h.includes('map');
        } catch(e) { return false; }
    };

    const shouldRenderUI = () => {
        if (isMapEnv()) return false;
        if (window.innerWidth < 50 || window.innerHeight < 50) return false;
        try {
            if (window.parent !== window && window.parent.document) return false;
        } catch(e) {}
        return true;
    };

    let shadowRoot = null;

    window.addEventListener('message', (e) => {
        if (e.data && e.data.type === 'NOTIFY_TOAST') {
            showToast(e.data.msg, !e.data.isSuccess);
        }
    });

    const showToast = (msg, isError = false) => {
        if (!shadowRoot) return;
        const color = isError ? 'rgba(255, 59, 48, 0.9)' : 'rgba(52, 199, 89, 0.9)';
        const toast = document.createElement('div');
        toast.style.cssText = `position:absolute;top:60px;left:50%;transform:translateX(-50%);background:rgba(255,255,255,0.95);border:1px solid ${color};color:${color};padding:14px 24px;border-radius:30px;font-size:15px;font-weight:900;box-shadow:0 8px 24px rgba(0,0,0,0.15);display:flex;align-items:center;gap:10px;white-space:nowrap;z-index:9999;transition:all 0.4s cubic-bezier(0.32, 0.72, 0, 1);opacity:0;backdrop-filter:blur(10px);`;
        toast.innerHTML = (isError?'请求失败':'请求成功') + `<span style="font-size:12px;opacity:0.8;font-weight:normal;max-width:180px;overflow:hidden;text-overflow:ellipsis;margin-left:8px;">${msg}</span>`;
        shadowRoot.appendChild(toast);

        setTimeout(() => { toast.style.opacity = '1'; }, 10);
        setTimeout(() => { toast.style.opacity = '0'; toast.style.top = '-50px'; }, 3000);
        setTimeout(() => { if(toast.parentNode) toast.remove(); }, 3500);
    };

    const createUI = () => {
        if (!shouldRenderUI()) return;
        if (document.getElementById('gdcvi-stay-host')) return;

        const root = document.documentElement || document.body;
        if (!root) return;

        const hostElement = document.createElement('div');
        hostElement.id = 'gdcvi-stay-host';
        hostElement.style.cssText = 'position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:2147483647;';
        root.appendChild(hostElement);

        shadowRoot = hostElement.attachShadow({ mode: 'closed' });

        const style = document.createElement('style');
        style.textContent = `
            * { box-sizing: border-box; -webkit-tap-highlight-color: transparent; font-family: -apple-system, BlinkMacSystemFont, sans-serif; }
            #fab {
                position: absolute; top: 100px; right: 20px; width: 52px; height: 52px;
                background: rgba(255, 255, 255, 0.85); border-radius: 50%;
                box-shadow: 0 4px 16px rgba(0,0,0,0.12), inset 0 1px 0 rgba(255,255,255,1);
                pointer-events: auto; display: flex; justify-content: center; align-items: center;
                cursor: pointer; user-select: none; backdrop-filter: blur(12px) saturate(180%);
                transition: transform 0.2s cubic-bezier(0.25, 0.8, 0.25, 1);
            }
            #fab:active { transform: scale(0.88); }
            #overlay {
                position: absolute; top: 0; left: 0; width: 100%; height: 100%;
                background: rgba(0, 0, 0, 0.4); opacity: 0; pointer-events: none;
                transition: opacity 0.35s cubic-bezier(0.25, 0.8, 0.25, 1); backdrop-filter: blur(4px);
            }
            #overlay.active { opacity: 1; pointer-events: auto; }
            #bottom-sheet {
                position: absolute; bottom: -100%; left: 0; width: 100%;
                background: rgba(245, 245, 247, 0.95); border-top-left-radius: 28px; border-top-right-radius: 28px;
                padding: 24px 20px 32px; box-shadow: 0 -10px 40px rgba(0,0,0,0.15); pointer-events: auto;
                transition: bottom 0.4s cubic-bezier(0.32, 0.72, 0, 1); touch-action: pan-y;
                backdrop-filter: blur(25px) saturate(200%); border-top: 1px solid rgba(255,255,255,0.7);
            }
            #bottom-sheet.active { bottom: 0; }
            .sheet-handle { width: 42px; height: 5px; background: rgba(0, 0, 0, 0.15); border-radius: 3px; margin: 0 auto 20px; }
            .header-bar { position: relative; margin-bottom: 24px; display: flex; align-items: center; justify-content: center; }
            .sheet-title { font-weight: 700; font-size: 17px; color: #1d1d1f; }
            #btn-close {
                position: absolute; right: 0; width: 28px; height: 28px; background: rgba(0,0,0,0.06); border-radius: 50%;
                display: flex; justify-content: center; align-items: center; font-size: 16px; cursor: pointer;
            }
            .input-group { display: flex; gap: 14px; margin-bottom: 24px; }
            .input-box { flex: 1; display: flex; flex-direction: column; gap: 8px; }
            .input-box label { font-size: 13px; color: #86868b; font-weight: 600; }
            .input-box input {
                width: 100%; padding: 14px 12px; border: 1.5px solid rgba(0,0,0,0.04); border-radius: 14px;
                font-size: 16px; outline: none; background: #ffffff; color: #1d1d1f; font-weight: 600;
                font-family: monospace; transition: all 0.25s ease;
            }
            .input-box input:focus { border-color: #34c759; box-shadow: 0 0 0 4px rgba(52, 199, 89, 0.15); }
            .btn-group { display: flex; gap: 14px; }
            button {
                flex: 1; padding: 16px; border: none; border-radius: 16px; font-weight: 600; font-size: 16px;
                cursor: pointer; transition: transform 0.2s;
            }
            button:active { transform: scale(0.96); }
            #btn-save { background: linear-gradient(135deg, #32d74b, #28a745); color: #ffffff; box-shadow: 0 6px 16px rgba(40, 167, 69, 0.25); }
            #btn-reset { background: #e8f0fe; color: #007aff; }
            
            .coffee-area { margin-top: 24px; text-align: center; }
            .coffee-link { font-size: 13px; color: #86868b; text-decoration: none; border-bottom: 1px solid rgba(134, 134, 139, 0.3); padding-bottom: 2px; transition: color 0.2s; }
            .coffee-link:active { color: #1d1d1f; }
            .coffee-qr-box { display: none; margin-top: 16px; transition: all 0.3s ease; }
            .coffee-qr-box img { width: 140px; height: 140px; border-radius: 12px; box-shadow: 0 4px 16px rgba(0,0,0,0.1); }
            .coffee-tips { font-size: 12px; color: #999; margin-top: 8px; font-weight: 500; }
        `;
        shadowRoot.appendChild(style);

        const overlay = document.createElement('div');
        overlay.id = 'overlay';
        shadowRoot.appendChild(overlay);

        const fab = document.createElement('div');
        fab.id = 'fab';
        fab.innerHTML = `<svg width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="#28a745" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round"><path d="M21 10c0 7-9 13-9 13s-9-6-9-13a9 9 0 0 1 18 0z"></path><circle cx="12" cy="10" r="3"></circle></svg>`;
        shadowRoot.appendChild(fab);

        const sheet = document.createElement('div');
        sheet.id = 'bottom-sheet';
        sheet.innerHTML = `
            <div class="sheet-handle"></div>
            <div class="header-bar"><div class="sheet-title">定位控制台</div><div id="btn-close">✕</div></div>
            <div class="input-group">
                <div class="input-box"><label>纬度 (Lat)</label><input type="number" id="lat" value="${F_LAT}"></div>
                <div class="input-box"><label>经度 (Lng)</label><input type="number" id="lng" value="${F_LNG}"></div>
            </div>
            <div class="btn-group"><button id="btn-save">应用坐标</button><button id="btn-reset">回宿舍</button></div>
            <div class="coffee-area">
                <a href="#" id="btn-coffee" class="coffee-link">☕ Buy me a coffee</a>
                <div id="coffee-qr-box" class="coffee-qr-box">
                    <img src="https://free.picui.cn/free/2026/04/28/69f0a90966b2d.jpg" alt="28795ff391cca37fb745455977698c7d.jpg" title="28795ff391cca37fb745455977698c7d.jpg" />
                    <div class="coffee-tips">Scan to support</div>
                </div>
            </div>
        `;
        shadowRoot.appendChild(sheet);

        const toggleSheet = (show) => {
            sheet.classList.toggle('active', show);
            overlay.classList.toggle('active', show);
            sheet.style.bottom = show ? '0' : '';
            if (!show) {
                const qrBox = shadowRoot.getElementById('coffee-qr-box');
                if (qrBox) qrBox.style.display = 'none';
            }
        };

        overlay.addEventListener('click', () => toggleSheet(false));
        shadowRoot.getElementById('btn-close').addEventListener('click', () => toggleSheet(false));

        shadowRoot.getElementById('btn-coffee').addEventListener('click', (e) => {
            e.preventDefault();
            const qrBox = shadowRoot.getElementById('coffee-qr-box');
            qrBox.style.display = (qrBox.style.display === 'block') ? 'none' : 'block';
        });

        let isDragging = false, isMoved = false, startX, startY, startLeft, startTop;

        const startDrag = (e) => {
            if (e.type.includes('touch') && e.touches.length > 1) return;
            isDragging = true; isMoved = false;
            startX = e.type.includes('touch') ? e.touches[0].clientX : e.clientX;
            startY = e.type.includes('touch') ? e.touches[0].clientY : e.clientY;
            startLeft = fab.offsetLeft; startTop = fab.offsetTop;
            fab.style.transition = 'none';
        };

        const doDrag = (e) => {
            if (!isDragging) return;
            if (e.type.includes('touch') && e.touches.length > 1) { isDragging = false; return; }
            const cx = e.type.includes('touch') ? e.touches[0].clientX : e.clientX;
            const cy = e.type.includes('touch') ? e.touches[0].clientY : e.clientY;
            if (Math.abs(cx - startX) > 3 || Math.abs(cy - startY) > 3) { isMoved = true; e.preventDefault(); }
            if (isMoved) {
                fab.style.left = `${Math.max(0, Math.min(startLeft + cx - startX, window.innerWidth - fab.offsetWidth))}px`;
                fab.style.top = `${Math.max(0, Math.min(startTop + cy - startY, window.innerHeight - fab.offsetHeight))}px`;
            }
        };

        const stopDrag = () => {
            if (!isDragging) return;
            isDragging = false;
            fab.style.transition = 'transform 0.2s cubic-bezier(0.25, 0.8, 0.25, 1)';
            if (!isMoved) toggleSheet(true);
        };

        fab.addEventListener('mousedown', startDrag);
        fab.addEventListener('touchstart', startDrag, { passive: false });
        window.addEventListener('mousemove', doDrag, { passive: false });
        window.addEventListener('touchmove', doDrag, { passive: false });
        window.addEventListener('mouseup', stopDrag);
        window.addEventListener('touchend', stopDrag);

        let sheetStartY = 0, sheetIsDragging = false;
        sheet.addEventListener('touchstart', (e) => {
            if (['INPUT', 'BUTTON', 'A'].includes(e.target.tagName)) return;
            sheetStartY = e.touches[0].clientY;
            sheetIsDragging = true;
            sheet.style.transition = 'none';
        }, { passive: true });

        sheet.addEventListener('touchmove', (e) => {
            if (!sheetIsDragging) return;
            const dy = e.touches[0].clientY - sheetStartY;
            if (dy > 0) sheet.style.bottom = `-${dy}px`;
        }, { passive: true });

        sheet.addEventListener('touchend', (e) => {
            if (!sheetIsDragging) return;
            sheetIsDragging = false;
            sheet.style.transition = 'bottom 0.4s cubic-bezier(0.32, 0.72, 0, 1)';
            if (e.changedTouches[0].clientY - sheetStartY > 60) toggleSheet(false);
            else sheet.style.bottom = '0';
        });

        const syncAndReload = (lat, lng) => {
            Store.set('gdcvi_fake_lat', lat);
            Store.set('gdcvi_fake_lng', lng);
            window.postMessage({ type: 'SYNC_COORD', lat, lng }, '*');
            
            const frames = document.querySelectorAll('iframe');
            frames.forEach(f => { try { if (f.contentWindow) f.contentWindow.postMessage({ type: 'SYNC_COORD', lat, lng }, '*'); } catch(err){} });
            
            toggleSheet(false);
            setTimeout(() => location.reload(), 300);
        };

        shadowRoot.getElementById('btn-save').addEventListener('click', () => {
            const lat = parseFloat(shadowRoot.getElementById('lat').value);
            const lng = parseFloat(shadowRoot.getElementById('lng').value);
            if (!isNaN(lat) && !isNaN(lng)) syncAndReload(lat, lng);
        });

        shadowRoot.getElementById('btn-reset').addEventListener('click', () => {
            shadowRoot.getElementById('lat').value = D_LAT;
            shadowRoot.getElementById('lng').value = D_LNG;
            syncAndReload(D_LAT, D_LNG);
        });
    };

    if (document.readyState === 'loading') document.addEventListener('DOMContentLoaded', createUI);
    else createUI();

    let confirmBoxShown = false;

    const checkCheckInButton = () => {
        if (!shouldRenderUI() || confirmBoxShown || !shadowRoot) return;
        let targetBtn = null;
        const walker = document.createTreeWalker(document.body, NodeFilter.SHOW_TEXT, null, false);
        let node;
        while ((node = walker.nextNode())) {
            const text = node.nodeValue.trim();
            if (['签到', '打卡', '立即签到', '立即打卡'].includes(text)) {
                targetBtn = node.parentElement.closest('button, [role="button"], .adm-button, .van-button, .weui-btn') || node.parentElement;
                break;
            }
        }

        if (targetBtn && targetBtn.offsetWidth > 0) {
            const isBtnDisabled = targetBtn.disabled || targetBtn.className.includes('disabled') || targetBtn.getAttribute('aria-disabled') === 'true';
            const pageText = document.body.innerText || "";
            const inSafeZone = pageText.includes('可以进行签到') || pageText.includes('已在指定区域内');
            
            if (!isBtnDisabled || inSafeZone) {
                confirmBoxShown = true;
                
                const box = document.createElement('div');
                box.style.cssText = 'position:absolute;top:50%;left:50%;transform:translate(-50%, -50%);background:rgba(255,255,255,0.95);border:1px solid rgba(0,0,0,0.1);color:#1d1d1f;padding:24px;border-radius:24px;text-align:center;width:80%;max-width:320px;pointer-events:auto;box-shadow:0 10px 40px rgba(0,0,0,0.15);backdrop-filter:blur(25px);z-index:3000;transition:all 0.3s;';
                box.innerHTML = '<div style="font-size:18px;font-weight:700;margin-bottom:12px;">操作确认</div><div style="font-size:14px;color:#86868b;margin-bottom:24px;">已锁定至目标区域，是否执行签到操作？</div><div style="display:flex;gap:12px;"><button id="btn_c" style="flex:1;padding:14px;border:none;border-radius:14px;background:#e5e5ea;color:#8e8e93;font-weight:600;font-size:15px;cursor:pointer;">取消</button><button id="btn_ok" style="flex:1;padding:14px;border:none;border-radius:14px;background:linear-gradient(135deg, #32d74b, #28a745);color:#fff;font-weight:600;font-size:15px;cursor:pointer;">确认执行</button></div>';
                shadowRoot.appendChild(box);

                shadowRoot.getElementById('btn_c').onclick = () => { box.remove(); confirmBoxShown = false; };
                shadowRoot.getElementById('btn_ok').onclick = () => {
                    box.innerHTML = '<div style="font-size:16px;color:#28a745;font-weight:bold;padding:10px 0;">执行中...</div>';
                    setTimeout(() => {
                        box.remove();
                        window.postMessage({ type: 'PRIME_AUTO_CLICK' }, '*');
                        targetBtn.click();
                    }, 300);
                };
            }
        }
    };

    if (shouldRenderUI()) {
        const domObserver = new MutationObserver(() => checkCheckInButton());
        window.addEventListener('DOMContentLoaded', () => {
            checkCheckInButton();
            domObserver.observe(document.body, { childList: true, subtree: true });
        });
    }

})();