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<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>数学题单 - XCPC-Math-Finder</title>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.1/css/all.min.css">
<style>
body {
margin: 0;
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
background-color: #f4f7f6;
color: #333;
scroll-behavior: smooth;
min-height: 100vh;
position: relative;
}
/* 自适应、居中、降低亮度的全屏背景图 */
body::before {
content: "";
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
background-image: url('BG.png');
background-position: center;
background-repeat: no-repeat;
background-size: cover;
filter: brightness(0.75);
z-index: -1;
}
/* 规范顶端栏 */
header {
width: 100%;
background-color: #f39c12;
color: white;
padding: 10px 40px;
box-sizing: border-box;
display: flex;
justify-content: space-between;
align-items: center;
box-shadow: 0 2px 10px rgba(0,0,0,0.1);
position: fixed;
top: 0;
z-index: 1000;
}
.header-left { display: flex; align-items: baseline; gap: 15px; }
.header-left h1 { margin: 0; font-size: 1.8em; letter-spacing: 1px; }
.header-left .author { font-size: 1em; opacity: 0.9; }
.header-right-nav { display: flex; align-items: center; }
.back-btn {
background-color: rgba(255, 255, 255, 0.2);
color: white;
text-decoration: none;
padding: 8px 18px;
border-radius: 50px;
font-weight: bold;
transition: all 0.3s ease;
border: 1px solid rgba(255, 255, 255, 0.4);
font-size: 0.9em;
display: flex;
align-items: center;
gap: 6px;
}
.back-btn:hover {
background-color: rgba(255, 255, 255, 0.35);
transform: scale(1.05);
}
/* 顶部工具栏 (搜索框定位) */
.toolbar {
max-width: 1100px;
width: 100%;
margin: 90px auto 10px auto;
padding: 0 20px;
box-sizing: border-box;
display: flex;
justify-content: flex-start;
}
.search-box {
background-color: rgba(255, 255, 255, 0.65);
backdrop-filter: blur(10px);
border: 1px solid rgba(255, 255, 255, 0.4);
border-radius: 50px;
padding: 10px 20px;
display: flex;
align-items: center;
gap: 10px;
width: 350px;
box-shadow: 0 4px 15px rgba(0,0,0,0.05);
transition: all 0.3s ease;
}
.search-box:focus-within {
background-color: rgba(255, 255, 255, 0.85);
box-shadow: 0 6px 20px rgba(0,0,0,0.1);
transform: translateY(-2px);
}
.search-box i { color: #7f8c8d; }
.search-box input {
border: none;
background: transparent;
outline: none;
width: 100%;
font-size: 1em;
color: #2c3e50;
font-weight: 500;
}
.search-box input::placeholder { color: #95a5a6; }
/* 右侧胶囊导航 */
.floating-nav {
position: fixed;
bottom: 40px;
right: 40px;
display: flex;
flex-direction: column;
gap: 12px;
z-index: 1000;
}
.btn-jump {
background-color: rgba(52, 152, 219, 0.7);
backdrop-filter: blur(5px);
color: white;
text-decoration: none;
padding: 10px 20px;
border-radius: 50px;
font-weight: bold;
font-size: 0.9em;
box-shadow: 0 8px 20px rgba(0,0,0,0.15);
transition: all 0.3s;
text-align: center;
border: 1px solid rgba(255,255,255,0.2);
}
.btn-jump:hover {
background-color: rgba(41, 128, 185, 0.95);
transform: translateX(-5px);
}
/* 主体容器 */
.container {
max-width: 1100px;
width: 100%;
margin: 0 auto;
padding: 10px 20px 100px 20px;
box-sizing: border-box;
}
/* 大板块标题 */
.category-section { margin-bottom: 50px; }
.category-title {
color: #fff;
font-size: 2em;
margin-bottom: 20px;
text-shadow: 0 2px 4px rgba(0,0,0,0.4);
display: flex;
align-items: center;
gap: 12px;
padding-top: 20px;
}
.category-title i { color: #f39c12; }
.section-divider { border: 0; height: 3px; background: linear-gradient(to right, #f39c12, transparent); margin-bottom: 25px; }
/* 表格与毛玻璃设计 */
table {
width: 100%;
border-collapse: collapse;
background-color: rgba(255, 255, 255, 0.7);
backdrop-filter: blur(10px);
box-shadow: 0 10px 25px rgba(0,0,0,0.06);
border-radius: 12px;
overflow: hidden;
border: 1px solid rgba(255, 255, 255, 0.4);
}
th, td { padding: 14px 15px; text-align: left; border-bottom: 1px solid rgba(238, 238, 238, 0.5); }
th { background-color: rgba(44, 62, 80, 0.9); color: white; font-weight: 600; font-size: 0.95em; }
td { color: #2c3e50; font-weight: 500; font-size: 0.95em; transition: opacity 0.3s; }
tr:hover td { background-color: rgba(255, 255, 255, 0.5); }
/* 细分小类分组头 */
.subcat-header {
background-color: rgba(236, 240, 241, 0.85) !important;
color: #2980b9 !important;
font-weight: bold !important;
font-size: 1.05em !important;
text-align: center;
}
/* 徽章与标签 */
.badge { padding: 4px 10px; border-radius: 6px; font-size: 0.85em; font-weight: bold; color: white; display: inline-block; text-align: center; box-shadow: 0 2px 4px rgba(0,0,0,0.1); }
.badge-cf { background-color: #2980b9; }
.badge-qoj { background-color: #e67e22; }
/* 难度标签 */
.diff-easy { background-color: #27ae60; }
.diff-medium { background-color: #f39c12; }
.diff-hard { background-color: #c0392b; }
a.link-btn { color: #2980b9; text-decoration: none; font-weight: bold; }
a.link-btn:hover { text-decoration: underline; color: #1f618d; }
input[type="checkbox"] { transform: scale(1.4); cursor: pointer; }
/* 已做题目的视觉置灰效果 */
tr.done-row td { opacity: 0.5; }
tr.done-row td:first-child { opacity: 1; /* 保持 checkbox 清晰可见 */ }
/* 空状态提示 */
.empty-state { text-align: center; padding: 30px; color: #fff; text-shadow: 0 1px 3px rgba(0,0,0,0.5); font-weight: bold; font-size: 1.1em; background: rgba(0,0,0,0.2); border-radius: 10px; }
@media (max-width: 768px) {
/* 1. 顶端导航栏：压缩边距，缩小字号 */
header {
padding: 10px 15px;
}
.header-left h1 {
font-size: 1.2em;
}
.header-left .author {
display: none; /* 手机端空间有限，隐藏副标题/作者，保持头部干净 */
}
.header-right {
font-size: 1.2em;
gap: 15px;
}
.back-btn {
padding: 6px 12px;
font-size: 0.8em;
}
/* 2. 主页/公共头部布局：转为纵向排列 */
.sub-header {
margin-top: 70px;
flex-direction: column;
text-align: center;
gap: 10px;
}
.sub-header h2 {
font-size: 1.5em;
}
/* 3. 主页卡片网格：降维至单列 */
.main-grid {
grid-template-columns: 1fr;
gap: 30px;
}
.nav-card {
width: 100%;
height: 160px; /* 稍微压低卡片高度 */
font-size: 1.3em;
}
.capsule-group {
height: auto;
flex-direction: row; /* 数据气泡改为横向并排 */
justify-content: center;
gap: 10px;
margin-bottom: -10px;
}
/* 4. 搜索框工具栏：占满屏幕宽度 */
.search-box {
width: 100%;
}
/* 5. 数据表格降级方案：启用内部横向滚动 */
.container {
padding-left: 10px;
padding-right: 10px;
margin-top: 70px; /* 防止被顶栏遮挡 */
}
/* 将表格外层容器(如果需要)或表格本身设为块级并允许横向滚动 */
table {
display: block;
overflow-x: auto;
white-space: nowrap; /* 强制内容不换行，保障表格结构 */
-webkit-overflow-scrolling: touch; /* 提升 iOS 上的滚动顺滑度 */
}
th, td {
padding: 12px 10px;
}
/* 6. 右下角悬浮按钮：缩小并靠边，防止挡住底层表格内容 */
.floating-nav {
bottom: 20px;
right: 15px;
gap: 10px;
}
.btn-jump {
padding: 8px 16px;
font-size: 0.85em;
}
}
</style>
</head>
<body>
<header>
<div class="header-left">
<h1>XCPC-Math-Finder</h1>
<span class="author">🧮 专项数学训练</span>
</div>
<div class="header-right-nav">
<a href="index.html" class="back-btn"><i class="fa-solid fa-house"></i> 返回主页</a>
</div>
</header>
<div class="toolbar">
<div class="search-box">
<i class="fa-solid fa-magnifying-glass"></i>
<input type="text" id="search-input" placeholder="搜索细分小类、比赛名称或题号..." oninput="handleSearch()">
</div>
</div>
<div class="floating-nav" id="nav-container">
</div>
<div class="container" id="main-container">
</div>
<script>
const CATEGORIES = ["计数问题", "纯数论", "线性代数", "概率与期望"];
const DIFF_WEIGHT = { "Easy": 1, "Medium": 2, "Hard": 3 };
let globalMathData = [];
let doneMap = JSON.parse(localStorage.getItem('math_done_records')) || {};
const navContainer = document.getElementById('nav-container');
const mainContainer = document.getElementById('main-container');
// 初始化导航锚点
function initNav() {
navContainer.innerHTML = CATEGORIES.map((cat, index) =>
`<a href="#cat-${index}" class="btn-jump"><i class="fa-solid fa-tag"></i> ${cat}</a>`
).join('');
}
function getPlatformBadge(platform) {
if (platform === 'Codeforces') return '<span class="badge badge-cf">Codeforces</span>';
if (platform === 'QOJ') return '<span class="badge badge-qoj">QOJ</span>';
return `<span class="badge" style="background:#7f8c8d;">${platform}</span>`;
}
function getDiffBadge(diff) {
let cls = 'diff-easy';
if (diff === 'Medium') cls = 'diff-medium';
if (diff === 'Hard') cls = 'diff-hard';
return `<span class="badge ${cls}">${diff}</span>`;
}
function toggleMathDone(id, currentState) {
doneMap[id] = !currentState;
localStorage.setItem('math_done_records', JSON.stringify(doneMap));
renderMathView(document.getElementById('search-input').value.trim());
}
function handleSearch() {
const keyword = document.getElementById('search-input').value.trim();
renderMathView(keyword);
}
function renderMathView(filterKeyword = '') {
mainContainer.innerHTML = '';
const keyword = filterKeyword.toLowerCase();
// 1. 过滤数据
let filteredData = globalMathData;
if (keyword) {
filteredData = globalMathData.filter(item => {
const matchName = (item.contest_name || '').toLowerCase().includes(keyword);
const matchSub = (item.subcategory || '').toLowerCase().includes(keyword);
const matchId = (item.problem_id || '').toLowerCase().includes(keyword);
return matchName || matchSub || matchId;
});
}
// 2. 按四大类循环渲染
CATEGORIES.forEach((cat, index) => {
const section = document.createElement('div');
section.className = 'category-section';
section.id = `cat-${index}`;
// 标题
section.innerHTML = `
<h2 class="category-title"><i class="fa-solid fa-cube"></i> ${cat}</h2>
<hr class="section-divider">
`;
// 提取该大类下的数据
const catData = filteredData.filter(item => item.category === cat);
if (catData.length === 0) {
section.innerHTML += `<div class="empty-state">暂无符合条件的题目</div>`;
mainContainer.appendChild(section);
return;
}
// 3. 按小类 (subcategory) 聚合分组
const subcatMap = {};
catData.forEach(item => {
const sub = item.subcategory || '其他';
if (!subcatMap[sub]) subcatMap[sub] = [];
subcatMap[sub].push(item);
});
// 4. 构建表格
const table = document.createElement('table');
let tbodyHTML = `
<thead>
<tr>
<th width="60px">状态</th>
<th width="100px">难度</th>
<th width="100px">平台</th>
<th>比赛名称 & 题号</th>
<th width="120px">操作</th>
</tr>
</thead>
<tbody>
`;
// 遍历每个小类
for (const [subcat, problems] of Object.entries(subcatMap)) {
// 小类标题行
tbodyHTML += `<tr><td colspan="5" class="subcat-header">🏷️ ${subcat}</td></tr>`;
// 排序核心逻辑：未做在前(0)，已做沉底(1)。同状态下按照 Easy->Medium->Hard 排序
problems.sort((a, b) => {
const doneA = doneMap[a.id] ? 1 : 0;
const doneB = doneMap[b.id] ? 1 : 0;
if (doneA !== doneB) return doneA - doneB; // 状态不同，未做在前
const weightA = DIFF_WEIGHT[a.difficulty] || 0;
const weightB = DIFF_WEIGHT[b.difficulty] || 0;
return weightA - weightB; // 难度升序
});
// 生成题目行
problems.forEach(p => {
const isDone = doneMap[p.id] || false;
const rowClass = isDone ? 'done-row' : '';
tbodyHTML += `
<tr class="${rowClass}">
<td>
<input type="checkbox" ${isDone ? 'checked' : ''}
onchange="toggleMathDone('${p.id}', ${isDone})">
</td>
<td>${getDiffBadge(p.difficulty)}</td>
<td>${getPlatformBadge(p.platform)}</td>
<td><strong>${p.contest_name}</strong> - Problem ${p.problem_id}</td>
<td><a href="${p.contest_url}" target="_blank" class="link-btn">去切题 🚀</a></td>
</tr>
`;
});
}
tbodyHTML += `</tbody>`;
table.innerHTML = tbodyHTML;
section.appendChild(table);
mainContainer.appendChild(section);
});
}
// 入口
initNav();
fetch('math_problems.json')
.then(res => res.json())
.then(data => {
globalMathData = data;
renderMathView();
})
.catch(err => {
console.error("加载数学题库失败", err);
mainContainer.innerHTML = `<div class="empty-state" style="color:#e74c3c; background:rgba(255,255,255,0.8);">⚠️ 无法读取题库数据。请确保已通过 Python 脚本录入了题目，并在本地 Server 环境下运行。</div>`;
});
</script>
</body>
</html>