diff --git a/.gitignore b/.gitignore
index 57751d1..823cb3e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,6 @@
 # Binaries
 build/
-toolbox
+/toolbox
 *.exe
 *.exe~
 *.dll
diff --git a/cmd/toolbox/web/tools/football.html b/cmd/toolbox/web/tools/football.html
new file mode 100644
index 0000000..43bb8b0
--- /dev/null
+++ b/cmd/toolbox/web/tools/football.html
@@ -0,0 +1,398 @@
+{{define "football"}}
+<div id="panel-football" class="tool-panel">
+    <header class="page-header">
+        <h1 style="display: flex; align-items: center; gap: 12px; margin-bottom: 8px;">
+            <span>⚽</span> 足球概率模拟
+        </h1>
+        <p style="font-size: 16px; color: #86868b; margin: 0;">使用蒙特卡洛算法进行足球赛事出线概率模拟计算。</p>
+    </header>
+
+    <div class="tabs-container">
+        <div class="tab-btn active" id="tab-btn-wc">2026世界杯小组赛模拟</div>
+        <div class="tab-btn" id="tab-btn-afc" style="cursor: default; opacity: 0.5; font-weight: normal;" title="暂未开放">18(3*6) AFC qualification</div>
+    </div>
+
+    <!-- Tab 1: World Cup Simulator -->
+    <div id="football-tab-wc" class="football-tab-content">
+        <!-- Inputs Group Boxes -->
+        <div style="margin-bottom: 24px;">
+            <h2 style="font-size: 18px; font-weight: 700; color: #1d1d1f; margin-bottom: 16px; display: flex; justify-content: space-between; align-items: center;">
+                <span>📅 小组赛比分录入 (Completed Matches by Group)</span>
+                <button type="button" class="btn-sec" onclick="resetMatchesToDefault()" style="height: 28px; padding: 0 10px; font-size: 12px;">重置默认比分</button>
+            </h2>
+            
+            <div id="groups-input-grid" style="display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 20px;">
+                <!-- JS 动态注入 12 个小组盒子 -->
+            </div>
+        </div>
+
+        <!-- Actions -->
+        <div class="card" style="display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; margin-bottom: 24px;">
+            <div style="display: flex; align-items: center; gap: 10px;">
+                <label for="sim-count" style="font-size: 15px; font-weight: 600;">模拟次数 (Runs):</label>
+                <select id="sim-count" style="width: 140px; height: 38px; padding: 0 10px; font-size: 14px;">
+                    <option value="10000">10,000 (快速)</option>
+                    <option value="50000" selected>50,000 (标准)</option>
+                    <option value="100000">100,000 (精准)</option>
+                </select>
+            </div>
+            <button id="run-simulation-btn" onclick="startSimulation()" style="min-width: 180px; height: 44px; font-size: 15px;">
+                🚀 运行蒙特卡洛模拟
+            </button>
+        </div>
+
+        <!-- Loading -->
+        <div id="simulation-loading" style="display: none; text-align: center; padding: 30px; margin-bottom: 24px;" class="card">
+            <div class="spinner" style="border: 3px solid rgba(0,0,0,0.1); width: 40px; height: 40px; border-radius: 50%; border-left-color: var(--apple-blue); animation: spin 1s linear infinite; margin: 0 auto 12px;"></div>
+            <p style="font-size: 15px; color: #86868b; margin: 0;">正在进行蒙特卡洛模拟计算，请稍候...</p>
+        </div>
+
+        <!-- Results -->
+        <div id="simulation-results" style="display: none;">
+            <div class="card" style="margin-bottom: 16px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px;">
+                <h2 style="font-size: 20px; font-weight: 700; margin: 0;">📈 模拟预测结果</h2>
+                <span id="sim-duration-badge" style="font-size: 14px; color: #86868b; background: #f5f5f7; padding: 4px 10px; border-radius: 8px;"></span>
+            </div>
+            
+            <!-- Group Cards Grid -->
+            <div id="groups-results-grid" style="display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px;">
+                <!-- Group cards will be generated here -->
+            </div>
+        </div>
+    </div>
+</div>
+
+<style>
+    .btn-sec {
+        background-color: #f5f5f7;
+        color: #1d1d1f;
+        border: 1px solid #d2d2d7;
+        border-radius: 6px;
+        padding: 0 12px;
+        height: 32px;
+        font-size: 13px;
+        font-weight: 500;
+        cursor: pointer;
+        display: inline-flex;
+        align-items: center;
+        justify-content: center;
+        transition: all 0.2s;
+    }
+    .btn-sec:hover {
+        background-color: #e5e5e7;
+    }
+    
+    .score-input {
+        width: 32px;
+        text-align: center;
+        border: 1px solid #d2d2d7;
+        border-radius: 4px;
+        padding: 2px;
+        font-size: 13px;
+        box-sizing: border-box;
+    }
+    
+    .flag-preview {
+        font-size: 16px;
+        min-width: 20px;
+        display: inline-block;
+        text-align: center;
+    }
+
+    /* Group Card */
+    .group-input-card {
+        background: white;
+        border-radius: 16px;
+        padding: 16px;
+        box-shadow: 0 4px 20px rgba(0,0,0,0.03);
+        border: 1px solid rgba(0,0,0,0.05);
+        display: flex;
+        flex-direction: column;
+        gap: 12px;
+    }
+    .group-input-card h3 {
+        margin: 0;
+        font-size: 15px;
+        font-weight: 700;
+        color: #1d1d1f;
+        border-bottom: 1px solid #f5f5f7;
+        padding-bottom: 8px;
+    }
+
+    /* Group Result Card */
+    .group-result-card {
+        background: white;
+        border-radius: 16px;
+        padding: 16px;
+        box-shadow: 0 4px 20px rgba(0,0,0,0.03);
+        border: 1px solid rgba(0,0,0,0.05);
+        display: flex;
+        flex-direction: column;
+        gap: 12px;
+    }
+    .group-result-card h3 {
+        margin: 0;
+        font-size: 16px;
+        font-weight: 700;
+        color: #1d1d1f;
+        border-bottom: 1px solid #f5f5f7;
+        padding-bottom: 8px;
+        display: flex;
+        justify-content: space-between;
+    }
+
+    @keyframes spin {
+        0% { transform: rotate(0deg); }
+        100% { transform: rotate(360deg); }
+    }
+</style>
+
+<script>
+    const FIFA_TO_FLAG = {
+        'MEX': '🇲🇽', 'RSA': '🇿🇦', 'KOR': '🇰🇷', 'CZE': '🇨🇿',
+        'CAN': '🇨🇦', 'QAT': '🇶🇦', 'SUI': '🇨🇭', 'BIH': '🇧🇦',
+        'BRA': '🇧🇷', 'MAR': '🇲🇦', 'HAI': '🇭🇹', 'SCO': '🏴󠁧󠁢󠁳󠁣󠁴󠁿',
+        'USA': '🇺🇸', 'PAR': '🇵🇾', 'AUS': '🇦🇺', 'TUR': '🇹🇷',
+        'GER': '🇩🇪', 'CUW': '🇨🇼', 'CIV': '🇨🇮', 'ECU': '🇪🇨',
+        'NED': '🇳🇱', 'JPN': '🇯🇵', 'TUN': '🇹🇳', 'SWE': '🇸🇪',
+        'BEL': '🇧🇪', 'EGY': '🇪🇬', 'IRN': '🇮🇷', 'NZL': '🇳🇿',
+        'ESP': '🇪🇸', 'KSA': '🇸🇦', 'URU': '🇺🇾', 'CPV': '🇨🇻',
+        'FRA': '🇫🇷', 'SEN': '🇸🇳', 'NOR': '🇳🇴', 'COD': '🇨🇩',
+        'ARG': '🇦🇷', 'ALG': '🇩🇿', 'AUT': '🇦🇹', 'JOR': '🇯🇴',
+        'POR': '🇵🇹', 'COL': '🇨🇴', 'UZB': '🇺🇿', 'IRQ': '🇮🇶',
+        'ENG': '🏴󠁧󠁢󠁥󠁮󠁧󠁿', 'CRO': '🇭🇷', 'GHA': '🇬🇭', 'PAN': '🇵🇦'
+    };
+
+    function getFlag(teamCode) {
+        if (!teamCode) return '🏴';
+        return FIFA_TO_FLAG[teamCode.trim().toUpperCase()] || '🏴';
+    }
+
+
+
+    let defaultPayload = null;
+
+    async function loadFootballDefaults() {
+        try {
+            const response = await fetch('/api/football/defaults');
+            defaultPayload = await response.json();
+            resetMatchesToDefault();
+        } catch (e) {
+            console.error('Failed to load defaults:', e);
+        }
+    }
+
+    function resetMatchesToDefault() {
+        if (!defaultPayload) return;
+        renderGroupsInputGrid();
+    }
+
+    // Render the 12 input boxes programmatically
+    function renderGroupsInputGrid() {
+        const grid = document.getElementById('groups-input-grid');
+        grid.innerHTML = '';
+
+        const groups = defaultPayload.groups;
+        const completedMatches = defaultPayload.completed_matches;
+
+        // Sorted group keys (A to L)
+        const sortedGroups = Object.keys(groups).sort();
+
+        sortedGroups.forEach(grpName => {
+            const grpTeams = groups[grpName]; // Array of 4 teams
+            
+            // Create Card Container
+            const card = document.createElement('div');
+            card.className = 'group-input-card';
+
+            let cardContentHTML = `<h3>小组 ${grpName} 比赛比分录入</h3>`;
+            cardContentHTML += `<table style="width: 100%; border-collapse: collapse; font-size: 13px;"><tbody>`;
+
+            // Filter completedMatches for matches belonging to this group (preserves chronological order)
+            const pairings = [];
+            completedMatches.forEach(m => {
+                if (grpTeams.includes(m.team_a) && grpTeams.includes(m.team_b)) {
+                    pairings.push({
+                        teamA: m.team_a,
+                        teamB: m.team_b,
+                        scoreA: m.score_a,
+                        scoreB: m.score_b,
+                        isCompleted: m.is_completed
+                    });
+                }
+            });
+
+            // Render each pairing row
+            pairings.forEach(p => {
+                let scoreA = p.scoreA;
+                let scoreB = p.scoreB;
+                let isCompleted = p.isCompleted;
+
+                cardContentHTML += `
+                    <tr class="match-input-row" data-team-a="${p.teamA}" data-team-b="${p.teamB}" style="border-bottom: 1px solid #f5f5f7;">
+                        <td style="padding: 8px 0; display: flex; align-items: center; gap: 4px; height: 38px;">
+                            <span class="flag-preview">${getFlag(p.teamA)}</span>
+                            <span style="font-weight: 600;">${p.teamA}</span>
+                        </td>
+                        <td style="padding: 8px 0; text-align: center;">
+                            <div style="display: inline-flex; align-items: center; gap: 3px;">
+                                <input type="number" class="score-input score-a" value="${scoreA}" min="0">
+                                <span style="color: #86868b;">:</span>
+                                <input type="number" class="score-input score-b" value="${scoreB}" min="0">
+                            </div>
+                        </td>
+                        <td style="padding: 8px 0; text-align: right;">
+                            <div style="display: inline-flex; align-items: center; gap: 4px; justify-content: flex-end;">
+                                <span style="font-weight: 600;">${p.teamB}</span>
+                                <span class="flag-preview">${getFlag(p.teamB)}</span>
+                            </div>
+                        </td>
+                        <td style="padding: 8px 0; text-align: right; width: 56px;">
+                            <label style="display: inline-flex; align-items: center; gap: 3px; font-size: 11px; color: #86868b; cursor: pointer; margin: 0;">
+                                <input type="checkbox" class="completed-chk" ${isCompleted ? 'checked' : ''} style="cursor: pointer; width: 13px; height: 13px; margin: 0;">
+                                完赛
+                            </label>
+                        </td>
+                    </tr>
+                `;
+            });
+
+            cardContentHTML += `</tbody></table>`;
+            card.innerHTML = cardContentHTML;
+            grid.appendChild(card);
+        });
+    }
+
+    async function startSimulation() {
+        const runBtn = document.getElementById('run-simulation-btn');
+        const loadingDiv = document.getElementById('simulation-loading');
+        const resultsDiv = document.getElementById('simulation-results');
+        
+        runBtn.disabled = true;
+        loadingDiv.style.display = 'block';
+        resultsDiv.style.display = 'none';
+
+        try {
+            if (!defaultPayload) {
+                alert('默认数据尚未加载完成，请稍候再试。');
+                return;
+            }
+            const scoreOutcomes = defaultPayload.score_outcomes;
+            const groups = defaultPayload.groups;
+
+            const completedMatches = [];
+            const rows = document.querySelectorAll('.match-input-row');
+            rows.forEach(row => {
+                const teamA = row.getAttribute('data-team-a');
+                const teamB = row.getAttribute('data-team-b');
+                const scoreA = parseInt(row.querySelector('.score-a').value);
+                const scoreB = parseInt(row.querySelector('.score-b').value);
+                const isCompleted = row.querySelector('.completed-chk').checked;
+                
+                completedMatches.push({
+                    team_a: teamA,
+                    team_b: teamB,
+                    score_a: isNaN(scoreA) ? 0 : scoreA,
+                    score_b: isNaN(scoreB) ? 0 : scoreB,
+                    is_completed: isCompleted
+                });
+            });
+
+            const simulations = parseInt(document.getElementById('sim-count').value);
+
+            const startTime = performance.now();
+            const response = await fetch('/api/football/simulate', {
+                method: 'POST',
+                headers: { 'Content-Type': 'application/json' },
+                body: JSON.stringify({
+                    groups,
+                    completed_matches: completedMatches,
+                    score_outcomes: scoreOutcomes,
+                    simulations
+                })
+            });
+            const results = await response.json();
+            const endTime = performance.now();
+
+            renderGroupedResults(results, endTime - startTime);
+            loadingDiv.style.display = 'none';
+            resultsDiv.style.display = 'block';
+        } catch (err) {
+            alert('计算出错！' + err.message);
+            loadingDiv.style.display = 'none';
+        } finally {
+            runBtn.disabled = false;
+        }
+    }
+
+    function renderGroupedResults(results, clientDuration) {
+        const grid = document.getElementById('groups-results-grid');
+        grid.innerHTML = '';
+        
+        document.getElementById('sim-duration-badge').innerText = `耗时: ${(clientDuration / 1000).toFixed(2)} 秒`;
+
+        // Group the flat list by group name
+        const grouped = {};
+        results.forEach(r => {
+            if (!grouped[r.group]) {
+                grouped[r.group] = [];
+            }
+            grouped[r.group].push(r);
+        });
+
+        // Get sorted groups keys
+        const sortedGroups = Object.keys(grouped).sort();
+
+        sortedGroups.forEach(grpName => {
+            const groupTeams = grouped[grpName];
+            
+            // Create a group card
+            const card = document.createElement('div');
+            card.className = 'group-result-card';
+            
+            let tableRowsHTML = '';
+            groupTeams.forEach((teamProb, idx) => {
+                const flag = getFlag(teamProb.team_name);
+                const isQualifying = idx < 2; // top 2
+                const rankColor = isQualifying ? '#34c759' : '#86868b';
+                
+                tableRowsHTML += `
+                    <tr style="border-bottom: 1px solid #f5f5f7;">
+                        <td style="padding: 8px 0; font-weight: bold; color: ${rankColor}; width: 20px;">${idx + 1}</td>
+                        <td style="padding: 8px 0; display: flex; align-items: center; gap: 6px;">
+                            <span>${flag}</span>
+                            <span style="font-weight: 600;">${teamProb.team_name}</span>
+                        </td>
+                        <td style="padding: 8px 0; text-align: right; font-family: monospace; font-size: 13px;" title="直接出线概率 (小组前二)">
+                            ${(teamProb.direct_qual_prob * 100).toFixed(1)}%
+                        </td>
+                        <td style="padding: 8px 0; text-align: right; font-family: monospace; font-size: 13px; color: #86868b;" title="最佳第三名出线概率">
+                            ${(teamProb.third_qual_prob * 100).toFixed(1)}%
+                        </td>
+                        <td style="padding: 8px 0; text-align: right; font-family: monospace; font-size: 13px; font-weight: bold; color: var(--apple-blue);" title="总出线概率">
+                            ${(teamProb.total_qual_prob * 100).toFixed(1)}%
+                        </td>
+                    </tr>
+                `;
+            });
+
+            card.innerHTML = `
+                <h3>
+                    <span>小组 ${grpName}</span>
+                    <span style="font-size: 12px; font-weight: normal; color: #86868b;">前2名 / 第3名 / 总出线</span>
+                </h3>
+                <table style="width: 100%; border-collapse: collapse; font-size: 14px;">
+                    <tbody>
+                        ${tableRowsHTML}
+                    </tbody>
+                </table>
+            `;
+            grid.appendChild(card);
+        });
+    }
+
+    document.addEventListener('DOMContentLoaded', () => {
+        loadFootballDefaults();
+    });
+</script>
+{{end}}