first commit

Dockerfile

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+FROM python:3.10-slim
+
+# 安装系统依赖
+RUN apt-get update && apt-get install -y \
+    build-essential \
+    && rm -rf /var/lib/apt/lists/*
+
+# 安装 PyTorch（CPU 版本即可，避免太大）
+RUN pip install torch==2.5.1 torchvision==0.20.1 --index-url https://download.pytorch.org/whl/cpu
+
+# 安装其他依赖
+COPY requirements.txt .
+RUN pip install -r requirements.txt
+
+# 拷贝代码
+COPY . /app
+WORKDIR /app
+
+# 入口
+CMD ["python", "app.py"]

Readme.md

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+# DeepCubeA: 基于启发式搜索的魔方求解器复现
+
+![GitHub repo size](https://img.shields.io/github/repo-size/xiaofeng218/DeepcubeA)
+![Python](https://img.shields.io/badge/python-3.10%2B-blue)
+![PyTorch](https://img.shields.io/badge/pytorch-2.0%2B-orange)
+
+## 项目概述
+
+本项目是 [DeepCubeA](https://cse.sc.edu/~foresta/assets/files/SolvingTheRubiksCubeWithDeepReinforcementLearningAndSearch_Final.pdf) 方法的复现，训练使用 PyTorch Lightning 框架。该方法结合深度强化学习和搜索算法来解决魔方问题。原始论文展示了如何通过结合神经网络和搜索技术来解决复杂的组合优化问题，如魔方。
+
+## 安装指南
+
+### 训练环境
+
+- Python 3.10.16
+- PyTorch 2.5.1
+- CUDA (可选，用于加速训练)
+
+### 安装步骤
+
+1. 克隆仓库：
+
+   ```bash
+   git clone https://github.com/xiaofeng218/DeepcubeA.git
+   cd DeepcubeA
+   ```
+
+2. 创建环境并安装依赖项：
+
+   ```bash
+   conda create -n deepcubea python=3.10.16
+   conda activate deepcubea
+   conda install pytorch==2.5.1 torchvision==0.20.1 torchaudio==2.5.1 pytorch-cuda=12.1 -c pytorch -c nvidia
+   pip install -r requirements.txt
+   ```
+
+## 使用方法
+
+### 训练模型
+
+```bash
+python train.py
+```
+
+### 求解魔方
+
+下载训练好的 [final_model_K_30.pth](https://drive.google.com/file/d/1jdmdoXkkJb7sNq6oy-iudtnVIgQXDsLl/view?usp=drive_link) 模型，将其放在checkpoint文件夹下。
+
+注意修改 `config.py` 中的 model_path 为 `checkpoint/final_model_K_30.pth`
+
+#### 1. 推理
+
+随机打乱魔方并求解：
+
+```bash
+python inference.py
+```
+
+指定初始状态求解，可选 action 为 `U, R, F, D, L, B, U_inv, R_inv, F_inv, D_inv, L_inv, B_inv`，多个动作之间用空格分隔。
+
+```bash
+python inference.py --actions "U R F D L_inv B_inv"
+```
+
+运行`inference.py`脚本后，会生成一个HTML文件 `rubiks_solution.html`，用于可视化求解过程。
+
+#### 2. 网页应用
+
+运行 `app.py` 启动网页应用：
+
+```bash
+python app.py
+```
+
+在浏览器中打开 `http://localhost:5000` 即可访问网页应用。
+
+### 配置参数说明
+
+主要配置参数 (在config.py中定义)：
+
+- `--batch_size`: 训练批次大小 (默认: 10000)
+- `--num_workers`: 数据加载线程数 (默认: 16)
+- `--K`: 最大打乱次数 (默认: 30)
+- `--max_epochs`: 最大训练轮数 (默认: 100)
+- `--learning_rate`: 学习率 (默认: 1e-3)
+- `--convergence_threshold`: 收敛阈值 (默认: 0.05)
+- `--compile`: 是否编译加速模型 (默认: True)
+- `--model_path`: 模型路径 (默认: `checkpoint/final_model_K_30.pth`)
+- `--actions`: 初始状态动作 (默认: `""`)
+
+## 实现细节
+
+详细的实现方法和算法说明请参阅 [Implement.md](Implement.md) 文件，包括：
+
+- 魔方状态表示
+- 动作表示
+- 深度近似值迭代算法
+- 训练伪代码
+- BWAS搜索算法
+- 神经网络架构
+
+## 结果展示
+
+### 训练结果
+
+不同K值模型收敛（损失小于0.05）所需的epoch数（`1000 step/epoch`）：
+  ![k_convergence_epochs](assets/k_convergence_epochs.png)
+
+可以看到，模型收敛所需的训练epoch数随K的增加呈现出指数级增加的趋势，考虑到复现成本，在 K>15 之后，我们并未再
+让模型训练到收敛（即损失小于0.05），而是限定最大epoch为20.
+
+### 测试结果（K=30训练获得的最终收敛模型）
+
+#### 模型在不同打乱次数下状态输入的cost-to-go预测值统计（平均值，最大值）
+
+  ![model_output](assets/model_output_vs_shuffles.png)
+
+#### 测试样例：打乱100步的魔方，求解结果及所需时间
+
+由于我们的模型并未严格按照原文中设置的收敛域进行训练，因此模型能力会一定程度上弱于原文中的描述，下面是一个魔方求解案例：
+
+| 指标 | 值 |
+| --- | --- |
+| 打乱步数 | 100 |
+| 解决方案路径长度 | 23 |
+| 求解时间 | 7.6645 秒 |
+| 解决方案路径 | `['D_inv', 'R', 'U_inv', 'F', 'L_inv', 'R', 'B_inv', 'L_inv', 'U_inv', 'F', 'B_inv', 'D_inv', 'L_inv', 'F_inv', 'R', 'F', 'L_inv', 'F_inv', 'R_inv', 'D_inv', 'B', 'U']` |
+
+[查看魔方还原过程](https://xiaofeng218.github.io/DeepcubeA/assets/rubiks_solution.html)
+
+#### 性能分析
+
+构建了200组打乱1000-10000次的魔方作为测试集，使用A-star算法进行求解：
+
+> - 总测试数：200
+> - 测试硬件：NVIDIA A100
+> - 超参数：N=1000，$lambda=0.6$
+> - a-star搜索最大迭代次数：200
+> - 成功求解数：191
+> - 成功率：95.50%
+> - 测试集平均打乱次数：5446.30
+> - 平均解长度：22.30
+> - 平均求解时间：13.10秒
+> - 最大解长度：25
+
+## 引用
+
+如果您在研究中使用了本项目的代码，请引用原始论文：
+
+```bibtex
+@article{agostinelli2019solving,
+  title={Solving the Rubik’s cube with deep reinforcement learning and search},
+  author={Agostinelli, Forest and McAleer, Stephen and Shmakov, Alexander and Baldi, Pierre},
+  journal={Nature Machine Intelligence},
+  volume={1},
+  number={8},
+  pages={356--363},
+  year={2019},
+  publisher={Nature Publishing Group UK London}
+}
+```

app.py

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+import flask
+from flask import request, jsonify
+import torch
+import numpy as np
+import os
+from config import Config
+from model.DNN import DNN
+from model.Cube import Cube, TARGET_STATE
+from solver_utils import *
+
+# 初始化Flask应用
+app = flask.Flask(__name__, static_folder=None)
+app.config['JSON_AS_ASCII'] = False
+app.config['DEBUG'] = True
+
+# 加载配置
+config = Config()
+args = config.parse_args()
+# 设置默认模型路径
+model_path = args.model_path
+
+device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
+
+# 加载模型和创建Cube对象
+model = load_model(model_path, device)
+cube = Cube()
+
+# 初始化状态接口
+@app.route('/initState', methods=['POST'])
+def init_state():
+    # 初始状态设置为目标状态
+    initial_state = TARGET_STATE.copy()
+
+    # 生成旋转索引和状态映射
+    rotateIdxs_old = {}
+    rotateIdxs_new = {}
+    for move_name in cube.moves.keys():
+        # 使用Cube类中的实际移动映射
+        move_mapping = cube.moves[move_name]
+        # 构建old到new的映射
+        rotateIdxs_old[move_name] = move_mapping.tolist()
+        rotateIdxs_new[move_name] = list(range(54))
+
+    # 定义状态到特征提取和反向的映射
+    # 这里假设状态和特征提取使用相同的顺序
+    stateToFE = list(range(54))
+    FEToState = list(range(54))
+    legalMoves = list(cube.moves.keys())
+
+    response = {
+        'state': initial_state.tolist(),
+        'rotateIdxs_old': rotateIdxs_old,
+        'rotateIdxs_new': rotateIdxs_new,
+        'stateToFE': stateToFE,
+        'FEToState': FEToState,
+        'legalMoves': legalMoves
+    }
+
+    return jsonify(response)
+
+# 求解魔方接口
+@app.route('/solve', methods=['POST'])
+def solve():
+    try:
+        data = request.json
+        if not data or 'state' not in data:
+            return jsonify({'error': '请求参数错误，缺少state字段'}), 400
+
+        state = np.array(data['state'])
+        if state.shape != (54,):
+            return jsonify({'error': 'state参数格式错误，应为长度为54的数组'}), 400
+
+        print("开始求解魔方...")
+        action_path, solution_state_path = a_star_search(state, model, cube)
+
+        if action_path is None:
+            return jsonify({'error': '未能找到解决方案'}), 404
+
+        # 生成反向动作路径
+        solveMoves_rev = []
+        for action in action_path:
+            rev_action = action[:]
+            # 反转动作方向
+            if "inv" in rev_action:
+                rev_action = rev_action[0]
+            else:
+                rev_action += "_inv"
+            solveMoves_rev.append(rev_action)
+            
+        print(action_path)
+        print(solveMoves_rev)
+
+        response = {
+            'moves': [action for action in action_path],
+            'moves_rev': solveMoves_rev,
+            'solve_text': action_path
+        }
+
+        return jsonify(response)
+    except Exception as e:
+        print(f"求解过程中发生错误: {str(e)}")
+        return jsonify({'error': f'服务器内部错误: {str(e)}'}), 500
+
+# 静态文件服务
+@app.route('/static/<path:path>')
+def send_static(path):
+    print("Serving static file:", path)
+    return flask.send_from_directory('web/deepcube.igb.uci.edu/static', path)
+
+# 主页
+@app.route('/')
+def home():
+    return flask.send_from_directory('web/deepcube.igb.uci.edu', 'index.html')
+
+# 处理缺失的heapq模块
+import heapq
+
+if __name__ == '__main__':
+    # 确保checkpoint目录存在
+    if not os.path.exists('checkpoint'):
+        os.makedirs('checkpoint')
+        print("创建checkpoint目录，请将模型文件放入该目录")
+
+    # 检查模型文件是否存在
+    if not os.path.exists(model_path):
+        print(f"警告：未找到模型文件 {model_path}")
+        print("请确保模型文件存在于checkpoint目录中")
+
+    # 启动服务器
+    # 修改为仅监听本地主机
+    app.run(host='127.0.0.1', port=5000)

checkpoint/final_model_K_30.pth

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+/data/hanxiaofeng/deepcube/logs/20250818_2124/converged_checkpoints/final_model_K_30.pth

config.py

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+import argparse
+
+from numpy import False_
+
+class Config:
+    def __init__(self):
+        self.parser = argparse.ArgumentParser(description='PyTorch Lightning Training Config')
+        
+        # 数据配置
+        self.parser.add_argument('--data_dir', type=str, default='./data', help='数据存储目录')
+        self.parser.add_argument('--batch_size', type=int, default=10000, help='批次大小 (根据Readme设置为10000)')
+        self.parser.add_argument('--num_workers', type=int, default=16, help='数据加载线程数')
+        self.parser.add_argument('--K', type=int, default=30, help='最大打乱次数 (对于魔方设置为30)')
+        self.parser.add_argument('--num_val_samples', type=int, default=10000 * 100, help='每个epoch样本数')
+        self.parser.add_argument('--num_train_samples', type=int, default=10000 * 1000, help='每个epoch样本数')
+    
+        # 训练配置
+        self.parser.add_argument('--max_epochs', type=int, default=20, help='最大训练轮数')
+        self.parser.add_argument('--learning_rate', type=float, default=2e-4, help='学习率')
+        self.parser.add_argument('--weight_decay', type=float, default=0, help='权重衰减 (根据Readme不使用正则化)')
+        self.parser.add_argument('--devices', type=str, default="2", help="Devices to use: 'cpu', 'auto', '0', '1', '0,1', etc.")
+        self.parser.add_argument('--convergence_threshold', type=float, default=0.05, help='收敛阈值 (根据Readme设置为0.05)')
+        self.parser.add_argument('--chunk_size', type=int, default=10000 * 12, help='分块大小 (用于模型预测时的分块处理)')
+        self.parser.add_argument('--compile', type=bool, default=True, help='是否编译模型')
+        
+        # 其他配置
+        self.parser.add_argument('--log_dir', type=str, default='./logs', help='日志存储目录')
+        self.parser.add_argument('--checkpoint_dir', type=str, default='checkpoints', help='模型 checkpoint 存储目录')
+        self.parser.add_argument('--converged_checkpoint_dir', type=str, default='converged_checkpoints', help='收敛模型 checkpoint 存储目录')
+        self.parser.add_argument('--seed', type=int, default=42, help='随机种子')
+
+        # inference
+        self.parser.add_argument('--model_path', type=str, default='checkpoint/final_model_K_30.pth', help='模型路径')
+        self.parser.add_argument('--actions', type=str, default=None, help='指定的魔方动作序列，用空格分隔，如 "U R F D L B"')
+        
+    def parse_args(self):
+        return self.parser.parse_args()
+
+if __name__ == '__main__':
+    config = Config()
+    args = config.parse_args()
+    print(args)

dataset/dataloader.py

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+import os
+import torch
+import numpy as np
+from torch.utils.data import DataLoader, Dataset, random_split
+from pytorch_lightning import LightningDataModule
+from model.Cube import Cube, TARGET_STATE
+
+class RubikDataset(Dataset):
+    def __init__(self, config, num_samples, is_train=True):
+        super().__init__()
+        self.config = config
+        self.num_samples = num_samples
+        self.is_train = is_train
+        self.cube = Cube()
+        self.K = config.K  # 最大打乱次数
+        self.all_actions = list(self.cube.moves.keys())
+        
+    def __len__(self):
+        return self.num_samples
+        
+    def get_neighbors(self, state):
+        """
+        获取给定状态的所有邻居状态
+        参数:
+            state: 当前魔方状态，np.array
+        返回:
+            所有邻居状态的列表
+        """
+        return self.cube.get_neibor_state(state)
+        
+    def __getitem__(self, idx):
+        # 随机选择打乱次数 i ∈ [1, K]，其中50%概率为K，50%概率从[1, K-1]中均匀选择
+        if np.random.random() < 0.5 and self.is_train: # 训练时提高K次打乱的概率，加速收敛
+            i = self.K
+        else:
+            i = np.random.randint(1, self.K+1)
+        
+        # 从初始状态开始，随机应用 i 次动作
+        state = TARGET_STATE.copy()
+        # 采样i个随机动作：
+        actions = np.random.choice(self.all_actions, size=i, replace=True)
+
+        for action in actions:
+            state = self.cube.apply_action(state, action)
+        
+        # 获取所有邻居状态
+        neighbor_states = self.get_neighbors(state.copy())
+        
+        # 返回包装成dict的数据
+        return {
+            'state': state, # 54
+            'steps': i, 
+            'neighbors': neighbor_states # 12, 54
+        }
+
+class RubikDataModule(LightningDataModule):
+    def __init__(self, config):
+        super().__init__()
+        self.config = config
+        self.batch_size = config.batch_size
+        self.num_workers = config.num_workers
+        self.num_train_samples = config.num_train_samples
+        self.num_val_samples = config.num_val_samples
+        
+    def prepare_data(self):
+        # 不需要下载数据，数据集是自动生成的
+        pass
+        
+    def setup(self, stage=None):
+        # 创建训练、验证数据集
+        self.train_dataset = RubikDataset(
+            self.config, self.num_train_samples, is_train=True
+        )
+        self.val_dataset = RubikDataset(
+            self.config, self.num_val_samples, is_train=False
+        )
+        
+    def train_dataloader(self):
+        return DataLoader(
+            self.train_dataset, 
+            batch_size=self.batch_size, 
+            shuffle=True, 
+            num_workers=self.num_workers,
+            worker_init_fn=self._worker_init_fn
+        )
+        
+    def val_dataloader(self):
+        return DataLoader(
+            self.val_dataset, 
+            batch_size=self.batch_size, 
+            shuffle=False, 
+            num_workers=self.num_workers,
+            worker_init_fn=self._worker_init_fn
+        )
+        
+    def _worker_init_fn(self, worker_id):
+        # 获取 worker 的初始种子（会随 epoch 变化）
+        worker_seed = (self.config.seed + worker_id + torch.initial_seed()) % 2**32
+
+        # 设置 numpy、torch、python random 的种子
+        np.random.seed(worker_seed)
+        torch.manual_seed(worker_seed)

inference.py

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+import torch
+import numpy as np
+import heapq
+import os
+from config import Config
+from model.DNN import DNN
+from model.Cube import Cube, TARGET_STATE
+from vis import generate_rubiks_html
+import time
+
+from solver_utils import *
+
+def generate_html(initial_state, solution_path):
+    # 颜色映射 (0=白, 1=红, 2=绿, 3=黄, 4=橙, 5=蓝)
+    COLOR_MAP = {
+        0: "white",
+        1: "red",
+        2: "green",
+        3: "yellow",
+        4: "orange",
+        5: "blue"
+    }
+
+    # 面顺序和索引范围
+    FACE_ORDER = {
+        'U': list(range(0, 9)),    # 顶面
+        'R': list(range(9, 18)),   # 右面
+        'F': list(range(18, 27)),  # 前面
+        'D': list(range(27, 36)),  # 底面
+        'L': list(range(36, 45)),  # 左面
+        'B': list(range(45, 54))   # 后面
+    }
+
+    # 将初始状态转换为generate_rubiks_html需要的格式
+    initial_state_dict = {}
+    for face, indices in FACE_ORDER.items():
+        initial_state_dict[face] = [COLOR_MAP[initial_state[i]] for i in indices]
+
+    # 生成每一步的状态
+    moves = []
+    for state in solution_path:
+        move_state = {}
+        for face, indices in FACE_ORDER.items():
+            move_state[face] = [COLOR_MAP[state[i]] for i in indices]
+        moves.append(move_state)
+        
+    # 调用generate_rubiks_html生成网页
+    output_file = "rubiks_solution.html"
+    generate_rubiks_html(initial_state_dict, FACE_ORDER, moves, output_file)
+    print(f"已生成解决方案网页: {output_file}")
+
+
+def main():
+    # 加载配置
+    config = Config()
+    args = config.parse_args()
+
+    device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
+
+    # 加载模型
+    model = load_model(args.model_path, device=device)
+
+    # 创建Cube对象
+    cube = Cube()
+
+    # 初始状态为目标状态
+    initial_state = TARGET_STATE.copy()
+    state_path = []
+
+    if args.actions:
+        # 使用用户指定的动作序列
+        print(f"使用指定的动作序列: {args.actions}")
+        shuffle_actions = args.actions.split()
+        # 验证动作是否有效
+        valid_actions = set(cube.moves.keys())
+        invalid_actions = [action for action in shuffle_actions if action not in valid_actions]
+        if invalid_actions:
+            raise ValueError(f"无效的动作: {invalid_actions}，有效的动作是: {valid_actions}")
+    else:
+        # 随机生成动作序列
+        print("随机打乱魔方100次...")
+        all_actions = list(cube.moves.keys())
+        shuffle_actions = np.random.choice(all_actions, size=100, replace=True)
+
+    # 应用动作序列
+    for action in shuffle_actions:
+        initial_state = cube.apply_action(initial_state, action)
+        state_path.append(initial_state.copy())
+
+    print("开始A*搜索...")
+
+    # 执行A*搜索
+    start_time = time.time()
+    action_path, solution_state_path = a_star_search(initial_state, model, cube)
+    end_time = time.time()
+    solving_time = end_time - start_time
+
+    # 保存为可视化结果
+    if solution_state_path:
+        # 合并打乱路径和解决方案路径以展示完整过程
+        # full_state_path = state_path # + solution_state_path[1:]
+        generate_html(initial_state.copy(), solution_state_path)
+        # generate_html(initial_state, solution_state_path[1:])
+        print(f"找到解决方案，路径长度: {len(solution_state_path)}")
+        print(f"求解时间: {solving_time:.4f} 秒")  # 打印求解时间
+        print("打乱路径:", shuffle_actions)
+        if action_path:
+            print("解决方案路径:", action_path)
+    else:
+        print("未找到解决方案")
+
+if __name__ == '__main__':
+    main()

model/Cube.py

@@ -0,0 +1,179 @@
+import numpy as np
+
+# Target State
+# 用整数表示颜色（0=白, 1=红, 2=绿, 3=黄, 4=橙, 5=蓝）
+TARGET_STATE = np.array([
+    0,0,0, 0,0,0, 0,0,0,  # U 面
+    1,1,1, 1,1,1, 1,1,1,  # R 面
+    2,2,2, 2,2,2, 2,2,2,  # F 面
+    3,3,3, 3,3,3, 3,3,3,  # D 面
+    4,4,4, 4,4,4, 4,4,4,  # L 面
+    5,5,5, 5,5,5, 5,5,5   # B 面
+], dtype=np.int32)
+
+TARGET_STATE_ONE_HOT = np.eye(6)[TARGET_STATE]
+
+# Function to print state as a cube unfolded diagram
+def print_cube_state(state, title=None):
+    print(title)
+    # U face
+    print(" " * 6 + " ".join(map(str, state[0:3])))
+    print(" " * 6 + " ".join(map(str, state[3:6])))
+    print(" " * 6 + " ".join(map(str, state[6:9])))
+    # L, F, R, B faces
+    for i in range(3):
+        print(" ".join(map(str, state[36+i*3:39+i*3])) + " " + 
+              " ".join(map(str, state[18+i*3:21+i*3])) + " " + 
+              " ".join(map(str, state[9+i*3:12+i*3])) + " " + 
+              " ".join(map(str, state[51+i*3:48+i*3])))
+    # D face
+    print(" " * 6 + " ".join(map(str, state[27:30])))
+    print(" " * 6 + " ".join(map(str, state[30:33])))
+    print(" " * 6 + " ".join(map(str, state[33:36])))
+    print()
+
+def invert_mapping(mapping):
+        """生成逆映射"""
+        inv = np.empty(len(mapping), dtype=int)
+        inv[mapping] = np.arange(len(mapping))
+        return inv
+
+def make_moves():
+    """
+    生成 3x3x3 魔方的贴纸索引映射（逆时针 + 顺时针）
+    贴纸编号顺序：
+      U: 0-8,  R: 9-17,  F: 18-26,
+      D: 27-35, L: 36-44, B: 51-47
+    """
+
+    moves = {}
+
+    def cycle(mapping, positions):
+        """按循环位置更新映射"""
+        temp = mapping.copy()
+        for cycle_pos in positions:
+            cycle = np.append(cycle_pos, cycle_pos[0])
+            mapping[cycle[:-1]] = temp[cycle[1:]]
+
+    # 初始化基础状态（映射到自身）
+    identity = np.arange(54)
+
+    # 定义每个面的顺时针旋转
+    face_cycles = {
+        'U': [
+            # 上面自身旋转
+            [2, 8, 6, 0], [5, 7, 3, 1],
+            # 侧面环
+            [20, 9, 53, 36], [19, 10, 52, 37], [18, 11, 51, 38] 
+        ],
+        'D': [
+            [29, 35, 33, 27], [28, 32, 34, 30],
+            [24, 44, 45, 17], [25, 43, 46, 16], [26, 42, 47, 15]
+        ],
+        'F': [
+            [18, 24, 26, 20], [19, 21, 25, 23],
+            [17, 2, 36, 33], [14, 1, 39, 34], [11, 0, 42, 35]
+        ],
+        'B': [
+            [51, 45, 47, 53], [52, 48, 46, 50],
+            [9, 29, 44, 6], [12, 28, 41, 7], [15, 27, 38, 8]
+        ],
+        'L': [
+            [36, 38, 44, 42], [37, 41, 43, 39],
+            [33, 18, 6, 47], [30, 21, 3, 50], [27, 24, 0, 53]
+        ],
+        'R': [
+            [17, 15, 9, 11], [16, 12, 10, 14],
+            [45, 8, 20, 35], [48, 5, 23, 32], [51, 2, 26, 29]
+        ]
+    }
+
+    # 生成顺时针和逆时针映射
+    for face, cycles in face_cycles.items():
+        mapping = identity.copy()
+        cycle(mapping, cycles)
+        moves[face] = mapping
+        moves[face + "_inv"] = invert_mapping(mapping)
+
+    return moves
+
+class Cube:
+    def __init__(self):
+        # 初始化移动映射
+        self.moves = make_moves()
+        
+    def apply_action(self, state, action):
+        """
+        根据输入的action和state得到新的state
+        参数:
+            state: 当前魔方状态，np.array
+            action: 要执行的动作，如 'U', 'R_inv', 等
+        返回:
+            新的魔方状态
+        """
+        if action not in self.moves.keys():
+            raise ValueError(f'不支持的动作: {action}')
+        return state[self.moves[action]]
+    
+    def get_neibor_state(self, state):
+        """
+        获取当前state的所有邻居状态
+        参数:
+            state: 当前魔方状态，np.array
+        返回:
+            所有邻居状态的列表，np.array
+        """
+        neibor_states = []
+        for action in self.moves.keys():
+            neibor_states.append(self.apply_action(state, action))
+        return np.stack(neibor_states, axis=0)
+
+    def is_solved(self, state):
+        """
+        判断当前state是否是魔方被还原后的state
+        参数:
+            state: 当前魔方状态，np.array
+        返回:
+            是否还原的布尔值
+        """
+        return np.array_equal(state, TARGET_STATE)
+    
+    def view_state(self, state):
+        pass
+
+
+
+if __name__ == "__main__":
+    # Initialize the Cube object
+    cube = Cube()
+    
+    # Get the initial solved state
+    initial_state = np.arange(54)
+
+    # Define the rotation action
+    action = 'F'
+    # Print the initial state
+    print_cube_state(initial_state, "Initial Cube State:")
+    
+    # Print the applied action
+    print(f"Applied action: {action}")
+
+    # Apply the rotation action
+    new_state = cube.apply_action(initial_state, action)
+    
+    # Print the new state
+    print_cube_state(new_state, "Cube State after Rotation:")
+
+    action = 'U'
+
+    new_state = cube.apply_action(new_state, action)
+    
+    # Print the applied action
+    print(f"Applied action: {action}")
+    print_cube_state(new_state, "Cube State after Rotation:")
+
+
+
+
+
+

model/DNN.py

@@ -0,0 +1,65 @@
+import torch
+import torch.nn as nn
+import torch.nn.functional as F
+from model.Cube import TARGET_STATE_ONE_HOT
+
+class ResidualBlock(nn.Module):
+    def __init__(self, input_dim, hidden_dim):
+        super(ResidualBlock, self).__init__()
+        self.fc1 = nn.Linear(input_dim, hidden_dim)
+        self.bn1 = nn.BatchNorm1d(hidden_dim)
+        self.fc2 = nn.Linear(hidden_dim, hidden_dim)
+        self.bn2 = nn.BatchNorm1d(hidden_dim)
+        
+    def forward(self, x):
+        residual = x
+        out = F.relu(self.bn1(self.fc1(x)))
+        out = self.bn2(self.fc2(out))
+        out += residual
+        out = F.relu(out)
+        return out
+
+class DNN(nn.Module):
+    def __init__(self, input_dim, num_residual_blocks=4):
+        super(DNN, self).__init__()
+        
+        # 前两个隐藏层
+        self.fc1 = nn.Linear(input_dim, 5000)
+        self.bn1 = nn.BatchNorm1d(5000)
+        self.fc2 = nn.Linear(5000, 1000)
+        self.bn2 = nn.BatchNorm1d(1000)
+        
+        # 残差块
+        self.residual_blocks = nn.ModuleList()
+        for _ in range(num_residual_blocks):
+            self.residual_blocks.append(ResidualBlock(1000, 1000))
+        
+        # 输出层
+        self.output_layer = nn.Linear(1000, 1)
+        
+    def forward(self, x):
+        # 前两个隐藏层
+        x = F.relu(self.bn1(self.fc1(x)))
+        x = F.relu(self.bn2(self.fc2(x)))
+        
+        # 残差块
+        for block in self.residual_blocks:
+            x = block(x)
+        
+        # 输出层
+        x = self.output_layer(x)
+        
+        return x # * self.K
+
+# 示例用法
+if __name__ == '__main__':
+    # 假设输入维度为54*6=324（根据Readme中提到的魔方状态表示）
+    input_dim = 324
+    model = DNN(input_dim, num_residual_blocks=4)
+    print(model)
+    
+    # 测试前向传播
+    test_input = torch.randn(10, input_dim)
+    output = model(test_input)
+    print(f'Input shape: {test_input.shape}')
+    print(f'Output shape: {output.shape}')

model/DeepcubeA_module.py

@@ -0,0 +1,186 @@
+import torch
+import torch.nn as nn
+import torch.nn.functional as F
+import torch.optim as optim
+from pytorch_lightning import LightningModule
+from model.DNN import DNN
+from model.Cube import TARGET_STATE_ONE_HOT
+
+
+class RelativeMSELoss(nn.Module):
+    def forward(self, pred, target):
+        return torch.mean(((pred - target) / (target + 1e-8)) ** 2)
+
+# 判断A中是否有和b相同的张量
+def row_allclose_mask(A, b, rtol=1e-4, atol=1e-6):
+    # 计算逐元素误差
+    diff = torch.abs(A - b)  # (B, D)
+    tol = atol + rtol * torch.abs(b)  # (D,), 广播自动扩展到 (B, D)
+    
+    # 满足误差条件的元素掩码
+    mask_elements = diff <= tol  # (B, D), bool
+    
+    # 判断每行是否所有元素都满足条件
+    mask_rows = mask_elements.all(dim=1)  # (B,)
+    
+    return mask_rows
+
+
+class DeepcubeA(LightningModule):
+    def __init__(self, config):
+        super().__init__()
+        self.config = config
+        self.learning_rate = config.learning_rate
+        self.weight_decay = config.weight_decay
+        self.convergence_threshold = config.convergence_threshold
+        self.chunk_size = config.chunk_size
+        self.converged_checkpoint_dir = config.converged_checkpoint_dir
+        self.compile = config.compile
+                
+        # 输入维度（54个贴纸，每个有6种可能的颜色，使用one-hot编码）
+        self.input_dim = 54 * 6
+        
+        self.model_theta = DNN(self.input_dim, num_residual_blocks=4)  # 训练模型
+        self.model_theta_e = DNN(self.input_dim, num_residual_blocks=4).eval()  # 监督模型
+
+        self.target_state = torch.tensor(TARGET_STATE_ONE_HOT, dtype=torch.float32).reshape(1, -1)
+
+        if self.compile:
+            self.model_theta = torch.compile(self.model_theta)
+            self.model_theta_e = torch.compile(self.model_theta_e)
+
+        self.K = 1
+        
+        # 损失函数
+        self.criterion = nn.MSELoss()
+        
+        # 保存超参数
+        self.save_hyperparameters(config)
+
+    def transfer_batch_to_tensor(self, batch):
+        """
+        批量将batch中的数据转移到tensor并移动到正确的设备上
+        参数:
+            batch: 输入的batch数据
+        返回:
+            处理后的batch字典，包含tensor格式的数据
+        """
+        batch_dict = {}
+        for key, value in batch.items():
+            if isinstance(value, torch.Tensor):
+                batch_dict[key] = value.to(self.device)
+            else:
+                batch_dict[key] = torch.tensor(value, device=self.device)
+        return batch_dict
+        
+    def forward(self, x):
+        return self.model_theta(x)
+        
+    def model_step(self, batch):
+        # 从batch中获取状态和邻居
+        batch_dict = self.transfer_batch_to_tensor(batch)
+        states = batch_dict['state']
+        neighbor_states = batch_dict['neighbors']
+
+        B, N, D = neighbor_states.shape
+
+        states = F.one_hot(states.long(), num_classes=6).float().view(B, -1)
+        neighbor_states = F.one_hot(neighbor_states.long(), num_classes=6).float().view(B*N, -1)
+        
+        # 分块预测以避免显存不足
+        num_chunks = (B * N + self.chunk_size - 1) // self.chunk_size
+        chunked_neighbors = torch.chunk(neighbor_states, num_chunks, dim=0)
+        
+        with torch.no_grad():
+            neighbor_costs = []
+            for chunk in chunked_neighbors:
+                mask = row_allclose_mask(chunk, self.target_state.to(chunk.device))
+                cost = self.model_theta_e(chunk)
+                cost[mask] = 0.0
+                neighbor_costs.append(cost)
+            
+            # 聚合结果
+            neighbor_costs = torch.cat(neighbor_costs, dim=0)
+            neighbor_costs = neighbor_costs.view(B, N)
+        
+        # 计算min[J_theta_e(A(x_i, a)) + 1]
+        min_neighbor_cost = neighbor_costs.abs().min(dim=1)[0] + 1
+        
+        # 使用model_theta预测当前状态的cost
+        current_cost = self.model_theta(states)
+        
+        # 总是计算损失
+        loss = self.criterion(current_cost.squeeze(), min_neighbor_cost)
+        return loss, current_cost
+        
+    def training_step(self, batch, batch_idx):
+        # 调用model_step获取损失
+        loss, _ = self.model_step(batch)
+        
+        # 记录指标
+        self.log('train_loss', loss, on_step=True, on_epoch=True, prog_bar=True)
+        
+        return loss
+        
+    def on_validation_epoch_end(self):
+        # 获取验证损失
+        val_loss = self.trainer.callback_metrics.get('val_loss')
+        
+        if val_loss is not None and val_loss < self.convergence_threshold:
+            self.log('converged', True)
+            
+            # 保存模型参数到专门的收敛模型目录
+            import os
+            os.makedirs(self.converged_checkpoint_dir, exist_ok=True)
+            checkpoint_path = os.path.join(self.converged_checkpoint_dir, f"converged_model_K_{self.K}.pth")
+            torch.save(self.model_theta.state_dict(), checkpoint_path)
+            print(f'模型已保存到 {checkpoint_path}')
+
+            # 如果收敛，更新model_theta_e
+            self.model_theta_e.load_state_dict(self.model_theta.state_dict())
+            
+            # 原文中没有找到上一轮训练的模型下一轮是否要继承参数，这里选择完全继承上一轮的参数，因为从头训练开销太大
+            # self.model_theta = DNN(self.input_dim, num_residual_blocks=4)
+            # if self.compile:
+            #     self.model_theta = torch.compile(self.model_theta)
+            
+            # 停止训练
+            self.trainer.should_stop = True
+
+    def on_train_end(self):
+        # 检查训练是否正常结束（非early stopping）
+        # 只有当训练不是因为converged而停止时，才执行保存操作
+        if not self.trainer.callback_metrics.get('converged', False):
+            # 获取最后一个epoch的验证损失
+            val_loss = self.trainer.callback_metrics.get('val_loss')
+            
+            # 保存模型参数到专门的收敛模型目录
+            import os
+            os.makedirs(self.converged_checkpoint_dir, exist_ok=True)
+            checkpoint_path = os.path.join(self.converged_checkpoint_dir, f"final_model_K_{self.K}.pth")
+            torch.save(self.model_theta.state_dict(), checkpoint_path)
+            print(f'训练结束，模型已保存到 {checkpoint_path}')
+
+            # 更新model_theta_e
+            self.model_theta_e.load_state_dict(self.model_theta.state_dict())
+        
+    def validation_step(self, batch, batch_idx):
+        # 计算验证损失
+        loss, current_cost = self.model_step(batch)
+        self.log('val_loss', loss, on_epoch=True, prog_bar=True)
+        self.log('val_cost', current_cost.mean(), on_epoch=True)
+        return loss
+        
+    def configure_optimizers(self):
+        optimizer = optim.AdamW(
+            self.model_theta.parameters(),
+            lr=self.learning_rate,
+            weight_decay=self.weight_decay
+        )
+        
+        return {'optimizer': optimizer}
+
+    def load_state_dict_theta_e(self, checkpoint_path):
+        state_dict = torch.load(checkpoint_path)
+        self.model_theta_e.load_state_dict(state_dict)
+        self.model_theta_e.zero_output = False

requirements.txt

@@ -0,0 +1,7 @@
+pytorch-lightning==2.5.1
+numpy==1.26.4
+matplotlib==3.10.3
+flask==3.1.1
+
+
+

solver_utils.py

@@ -0,0 +1,158 @@
+import numpy as np
+import torch
+import heapq
+import os
+from model.Cube import TARGET_STATE
+from model.DNN import DNN
+
+# 设置矩阵乘法精度，与train.py保持一致
+torch.set_float32_matmul_precision('medium')
+
+
+def load_model(model_path, device):
+    """
+    加载预训练模型
+    
+    参数:
+    model_path: 模型权重文件路径
+    device: 运行设备 (cpu 或 cuda)
+    use_half_precision: 是否使用半精度浮点数进行推理
+    """
+    input_dim = 54 * 6  # 魔方54个贴纸，每个6种颜色，使用one-hot编码
+    model = DNN(input_dim, num_residual_blocks=4)
+
+    try:
+        checkpoint = torch.load(model_path, map_location=device, weights_only=True)
+        # 处理模型权重，移除_orig_mod.前缀
+        model_weights = {k.replace('_orig_mod.', ''): v for k, v in checkpoint.items() if k.startswith('_orig_mod.')}
+        if not model_weights:
+            model_weights = checkpoint
+        model.load_state_dict(model_weights)
+    except Exception as e:
+        print(f"加载模型失败: {str(e)}")
+        raise
+
+    model = model.to(device)
+    
+    # 启用推理模式
+    model.eval()
+    
+    # 可选：使用TorchScript优化模型执行
+    try:
+        # 准备一个示例输入以进行追踪
+        example_input = torch.randn(1, input_dim).to(device)
+        model = torch.jit.trace(model, example_input)
+        print("已使用TorchScript优化模型")
+    except Exception as e:
+        print(f"TorchScript优化失败: {str(e)}")
+        pass
+    
+    return model
+
+
+def state_to_one_hot(state):
+    """
+    将魔方状态转换为one-hot编码
+    """
+    one_hot = np.zeros(54 * 6)
+    for i, color in enumerate(state):
+        one_hot[i * 6 + color] = 1
+    return one_hot
+
+
+def h(state, model):
+    """
+    启发函数，使用模型预测当前状态到目标状态的距离
+    """
+    with torch.no_grad():
+        if len(state.shape) == 2:
+            prediction = model(state)
+            return prediction.squeeze().tolist()
+        else:
+            state = state.unsqueeze(0)
+            prediction = model(state)
+            return prediction.item()
+
+
+def a_star_search(initial_state, model, cube, lam=0.6, max_iterations=200, N=1000):
+    """
+    A*搜索算法求解魔方
+    """
+    # 检查初始状态是否为目标状态
+    if np.array_equal(initial_state, TARGET_STATE):
+        return [], [initial_state]
+
+    open_set = []
+    closed_set = set()
+
+    initial_state_tensor = torch.tensor(initial_state, device=next(model.parameters()).device).long()
+    initial_state_tensor = torch.nn.functional.one_hot(initial_state_tensor, num_classes=6).float().view(-1)
+    g_score = {tuple(initial_state): 0}
+    h_score = {tuple(initial_state): h(initial_state_tensor, model)}
+    f_score = {tuple(initial_state): lam * g_score[tuple(initial_state)] + h_score[tuple(initial_state)]}
+
+    heapq.heappush(open_set, (f_score[tuple(initial_state)], tuple(initial_state)))
+
+    came_from = {}
+    iterations = 0
+
+    while open_set and iterations < max_iterations:
+        iterations += 1
+        #print(f"当前迭代: {iterations}, 开放集大小: {len(open_set)}")
+
+        current_states = []
+        for _ in range(min(N, len(open_set))):
+            _, state_tuple = heapq.heappop(open_set)
+            current_states.append(state_tuple)
+
+        # 收集所有邻居状态
+        neighbor_states = []
+
+        for current_state_tuple in current_states:
+            current_state = np.array(current_state_tuple)
+
+            if np.array_equal(current_state, TARGET_STATE):
+                action_path = []
+                state_path = [current_state]
+                while current_state_tuple in came_from:
+                    current_state_tuple, action = came_from[current_state_tuple]
+                    action_path.append(action)
+                    state_path.append(current_state_tuple)
+                return action_path[::-1], state_path[::-1]
+
+            if current_state_tuple in closed_set:
+                continue
+
+            closed_set.add(current_state_tuple)
+
+            for action in cube.moves.keys():
+                next_state = cube.apply_action(current_state, action)
+                next_state_tuple = tuple(next_state)
+
+                tentative_g_score = g_score[current_state_tuple] + 1
+
+                if next_state_tuple in closed_set:
+                    if tentative_g_score < g_score.get(next_state_tuple, float('inf')):
+                        closed_set.remove(next_state_tuple)
+                    else:
+                        continue
+
+                if next_state_tuple not in g_score or tentative_g_score < g_score[next_state_tuple]:
+                    came_from[next_state_tuple] = (current_state_tuple, action)
+                    g_score[next_state_tuple] = tentative_g_score
+                    neighbor_states.append(next_state)
+
+        if neighbor_states:
+            neighbor_states = np.stack(neighbor_states)
+            neighbor_states = np.unique(neighbor_states, axis=0)
+            neighbor_states_tensor = torch.tensor(neighbor_states, device=next(model.parameters()).device).long()
+            neighbor_states_tensor = torch.nn.functional.one_hot(neighbor_states_tensor, num_classes=6).float().view(-1, 324)
+
+            neighbor_h_scores = h(neighbor_states_tensor, model)
+            for i, state in enumerate(neighbor_states):
+                state_tuple = tuple(state)
+                h_score[state_tuple] = neighbor_h_scores[i]
+                f_score[state_tuple] = lam * g_score[state_tuple] + neighbor_h_scores[i]
+                heapq.heappush(open_set, (f_score[state_tuple], state_tuple))
+
+    return None, None  # 未找到解决方案

train.py

@@ -0,0 +1,115 @@
+import os
+import torch
+import random
+import numpy as np
+from pytorch_lightning import Trainer, seed_everything
+from pytorch_lightning.callbacks import ModelCheckpoint, EarlyStopping, LearningRateMonitor, model_checkpoint
+from pytorch_lightning.loggers import TensorBoardLogger
+from config import Config
+from dataset.dataloader import RubikDataModule
+from model.DeepcubeA_module import DeepcubeA
+import datetime
+
+torch.set_float32_matmul_precision('medium')
+
+def main():
+    # 解析配置
+    config = Config()
+    args = config.parse_args()
+    
+    # 设置随机种子
+    seed_everything(args.seed, workers=True)
+
+    args.log_dir = os.path.join(args.log_dir, datetime.datetime.now().strftime("%Y%m%d_%H%M"))
+    args.checkpoint_dir = os.path.join(args.log_dir, args.checkpoint_dir)
+    args.converged_checkpoint_dir = os.path.join(args.log_dir, args.converged_checkpoint_dir)
+
+    # 设置 accelerator & devices
+    if args.devices.lower() == "cpu":
+        accelerator = "cpu"
+        devices = 1   # CPU 默认只用一个进程
+    elif args.devices.lower() == "auto":
+        accelerator = "gpu" if torch.cuda.is_available() else "cpu"
+        devices = "auto"
+    else:
+        # 用户指定了 GPU id(s)
+        accelerator = "gpu"
+        if "," in args.devices:
+            devices = [int(x) for x in args.devices.split(",")]
+        else:
+            devices = [int(args.devices)]
+    
+    # 创建必要的目录
+    os.makedirs(args.log_dir, exist_ok=True)
+    os.makedirs(args.checkpoint_dir, exist_ok=True)
+    os.makedirs(args.converged_checkpoint_dir, exist_ok=True)
+    
+    # 初始化模型（只初始化一次，后续复用）
+    model = DeepcubeA(args)
+    
+    # 设置初始K值和最大K值
+    initial_K = 16
+    max_K = args.K  # 可以根据需要调整
+
+    model_e_checkpoint = "logs/20250818_1819/converged_checkpoints/final_model_K_14.pth"
+    model.model_theta_e.load_state_dict(torch.load(model_e_checkpoint))
+    model_checkpoint = "logs/20250818_1819/converged_checkpoints/final_model_K_15.pth"
+    model.model_theta.load_state_dict(torch.load(model_checkpoint))
+
+    for K in range(initial_K, max_K + 1):
+        print(f'\n--- 开始训练 K={K} ---')
+        
+        # 更新模型的K值
+        model.K = K
+        
+        # 创建新的数据集配置
+        args.K = K  # 设置当前K值
+        
+        # 初始化新的数据模块
+        data_module = RubikDataModule(args)
+        
+        # # 设置回调函数，暂时不添加这个，因为好像没什么用
+        # checkpoint_callback = ModelCheckpoint(
+        #     dirpath=args.checkpoint_dir,
+        #     filename=f'K_{K}_'+'{epoch}-{val_loss:.2f}',
+        #     save_top_k=3,
+        #     monitor='val_loss',
+        #     mode='min'
+        # )
+        
+        early_stopping_callback = EarlyStopping(
+            monitor='val_loss',
+            patience=5,
+            mode='min',
+        )
+        
+        # lr_monitor = LearningRateMonitor(logging_interval='epoch')
+        
+        # # 设置日志记录器（每个K值使用不同的日志目录）
+        # logger = TensorBoardLogger(
+        #     save_dir=args.log_dir,
+        #     name=f'train_logs_K_{K}'
+        # )
+        
+        # 初始化新的训练器，默认每个epoch验证一次，即5000步
+        trainer = Trainer(
+            max_epochs=args.max_epochs,
+            accelerator=accelerator,
+            precision="16-mixed",  # 启用混合精度
+            devices=devices,
+            logger=False,
+            callbacks=[early_stopping_callback],
+            deterministic=True,
+            enable_progress_bar=True,
+            enable_checkpointing=True
+        )
+
+        print(trainer.log_every_n_steps)
+        
+        # 训练模型
+        trainer.fit(model, datamodule=data_module)
+        
+        print(f'--- 完成训练 K={K} ---\n')
+    
+if __name__ == '__main__':
+    main()

vis.py

@@ -0,0 +1,550 @@
+# rubiks_color_change.py
+# 运行: python rubiks_color_change.py
+# 会生成 rubiks_color_change.html
+
+import json
+import model.Cube as Cube
+
+def generate_rubiks_html(initial_state, indince, moves, output_file="rubiks_move.html"):
+    """
+    initial_state: dict, {face_name: [9个颜色字符串]}
+        face_name: U, D, F, B, L, R
+        颜色字符串可用 "white","yellow","red","orange","blue","green"
+    moves: list, 每步是一个新的状态 (即9个颜色变化后的完整魔方)
+    """
+
+    html_template = f"""
+<!DOCTYPE html>
+<html lang="en">
+<head>
+<meta charset="UTF-8">
+<title>Rubik's Cube Color Change Animation</title>
+<style>
+  body {{ margin: 0; background: #000; }}
+  canvas {{ display: block; }}
+</style>
+<script src="https://cdn.jsdelivr.net/npm/three@0.148.0/build/three.min.js"></script>
+<script>
+  // OrbitControls implementation
+  THREE.OrbitControls = function (camera, domElement) {{
+    this.camera = camera;
+    this.domElement = domElement || document;
+    this.enabled = true;
+    this.target = new THREE.Vector3();
+    this.minDistance = 0;
+    this.maxDistance = Infinity;
+    this.minPolarAngle = 0;
+    this.maxPolarAngle = Math.PI;
+    this.minAzimuthAngle = -Infinity;
+    this.maxAzimuthAngle = Infinity;
+    this.dampingFactor = 0.05;
+    this.enableDamping = false;
+    this.enableZoom = true;
+    this.zoomSpeed = 0.1;
+    this.enableRotate = true;
+    this.rotateSpeed = 0.1;
+    this.enablePan = true;
+    this.panSpeed = 0.1;
+    this.screenSpacePanning = true;
+    this.keyPanSpeed = 0.5;
+    this.autoRotate = false;
+    this.autoRotateSpeed = 0.2;
+    this.keys = {{
+      LEFT: 37,
+      UP: 38,
+      RIGHT: 39,
+      BOTTOM: 40
+    }};
+    this.mouseButtons = {{
+      LEFT: THREE.MOUSE.ROTATE,
+      MIDDLE: THREE.MOUSE.DOLLY,
+      RIGHT: THREE.MOUSE.PAN
+    }};
+    var scope = this;
+    var EPS = 0.000001;
+    var spherical = new THREE.Spherical();
+    var sphericalDelta = new THREE.Spherical();
+    var scale = 1;
+    var panOffset = new THREE.Vector3();
+    var lastPosition = new THREE.Vector3();
+    var state = {{
+      NONE: -1,
+      ROTATE: 0,
+      DOLLY: 1,
+      PAN: 2,
+      TOUCH_ROTATE: 3,
+      TOUCH_DOLLY_PAN: 4
+    }};
+    var currentState = state.NONE;
+    var touchStartTime = 0;
+    var touchStartPosition = new THREE.Vector2();
+    var touchStartDistance = 0;
+    var mouseDownPosition = new THREE.Vector2();
+    function getPolarAngle() {{
+      return Math.atan2(Math.sqrt(camera.position.x * camera.position.x + camera.position.z * camera.position.z), camera.position.y);
+    }}
+    function getAzimuthalAngle() {{
+      return Math.atan2(camera.position.x, camera.position.z);
+    }}
+    function rotateLeft(angle) {{
+      sphericalDelta.phi -= angle;
+    }}
+    function rotateUp(angle) {{
+      sphericalDelta.theta -= angle;
+    }}
+    function panLeft(distance, objectMatrix) {{
+      var v = new THREE.Vector3();
+      v.setFromMatrixColumn(objectMatrix, 0);
+      v.multiplyScalar(-distance);
+      panOffset.add(v);
+    }}
+    function panUp(distance, objectMatrix) {{
+      var v = new THREE.Vector3();
+      if (scope.screenSpacePanning === true) {{
+        v.setFromMatrixColumn(objectMatrix, 1);
+      }} else {{
+        v.setFromMatrixColumn(objectMatrix, 0);
+        v.crossVectors(scope.camera.up, v);
+      }}
+      v.multiplyScalar(distance);
+      panOffset.add(v);
+    }}
+    function pan(deltaX, deltaY) {{
+      var element = scope.domElement === document ? scope.domElement.body : scope.domElement;
+      if (scope.screenSpacePanning === true) {{
+        var position = new THREE.Vector3();
+        position.setFromMatrixPosition(scope.camera.matrixWorld);
+        var target = new THREE.Vector3();
+        target.copy(scope.target);
+        var dir = new THREE.Vector3();
+        dir.subVectors(position, target);
+        var targetDistance = dir.length();
+        dir.normalize();
+        var eye = new THREE.Vector3();
+        eye.copy(position);
+        var end = new THREE.Vector3();
+        end.copy(target);
+        var tempTarget = new THREE.Vector3();
+        tempTarget.copy(target);
+        var matrix = new THREE.Matrix4();
+        matrix.lookAt(eye, end, scope.camera.up);
+        var right = new THREE.Vector3();
+        right.setFromMatrixColumn(matrix, 0);
+        var up = new THREE.Vector3();
+        up.setFromMatrixColumn(matrix, 1);
+        var scale = targetDistance * Math.tan(scope.camera.fov * 0.5 * Math.PI / 180.0) / element.clientHeight;
+        right.multiplyScalar(-deltaX * scale);
+        up.multiplyScalar(deltaY * scale);
+        tempTarget.add(right);
+        tempTarget.add(up);
+        panOffset.subVectors(tempTarget, target);
+      }} else {{
+        var offset = new THREE.Vector3();
+        var te = scope.camera.matrix.elements;
+        offset.x = -deltaX * te[0] - deltaY * te[4];
+        offset.y = -deltaX * te[1] - deltaY * te[5];
+        offset.z = -deltaX * te[2] - deltaY * te[6];
+        offset.normalize();
+        var distance = Math.sqrt(scope.camera.position.x * scope.camera.position.x + scope.camera.position.y * scope.camera.position.y + scope.camera.position.z * scope.camera.position.z);
+        offset.multiplyScalar(distance * 0.001);
+        panOffset.add(offset);
+      }}
+    }}
+    function dollyIn(dollyScale) {{
+      scale /= dollyScale;
+    }}
+    function dollyOut(dollyScale) {{
+      scale *= dollyScale;
+    }}
+    this.getPolarAngle = getPolarAngle;
+    this.getAzimuthalAngle = getAzimuthalAngle;
+    this.rotateLeft = rotateLeft;
+    this.rotateUp = rotateUp;
+    this.panLeft = panLeft;
+    this.panUp = panUp;
+    this.pan = pan;
+    this.dollyIn = dollyIn;
+    this.dollyOut = dollyOut;
+    this.update = function () {{
+      var offset = new THREE.Vector3();
+      offset.copy(scope.camera.position).sub(scope.target);
+      spherical.setFromVector3(offset);
+      spherical.theta += sphericalDelta.theta;
+      spherical.phi += sphericalDelta.phi;
+      spherical.theta = Math.max(scope.minAzimuthAngle, Math.min(scope.maxAzimuthAngle, spherical.theta));
+      spherical.phi = Math.max(scope.minPolarAngle, Math.min(scope.maxPolarAngle, spherical.phi));
+      spherical.makeSafe();
+      spherical.radius *= scale;
+      spherical.radius = Math.max(scope.minDistance, Math.min(scope.maxDistance, spherical.radius));
+      offset.setFromSpherical(spherical);
+      scope.camera.position.copy(scope.target).add(offset);
+      scope.camera.lookAt(scope.target);
+      if (scope.enableDamping === true) {{
+        sphericalDelta.theta *= (1 - scope.dampingFactor);
+        sphericalDelta.phi *= (1 - scope.dampingFactor);
+        scale = 1 + (scale - 1) * (1 - scope.dampingFactor);
+      }} else {{
+        sphericalDelta.set(0, 0, 0);
+        scale = 1;
+      }}
+      scope.camera.position.add(panOffset);
+      scope.target.add(panOffset);
+      panOffset.set(0, 0, 0);
+      if (scope.autoRotate === true && currentState === state.NONE) {{
+        rotateLeft(scope.autoRotateSpeed / 60 * Math.PI / 180);
+      }}
+      if (lastPosition.distanceToSquared(scope.camera.position) > EPS) {{
+        lastPosition.copy(scope.camera.position);
+        return true;
+      }}
+      return false;
+    }};
+    this.dispose = function () {{
+      scope.domElement.removeEventListener('contextmenu', onContextMenu, false);
+      scope.domElement.removeEventListener('mousedown', onMouseDown, false);
+      scope.domElement.removeEventListener('wheel', onMouseWheel, false);
+      scope.domElement.removeEventListener('touchstart', onTouchStart, false);
+      scope.domElement.removeEventListener('touchend', onTouchEnd, false);
+      scope.domElement.removeEventListener('touchmove', onTouchMove, false);
+      window.removeEventListener('mousemove', onMouseMove, false);
+      window.removeEventListener('mouseup', onMouseUp, false);
+      window.removeEventListener('keydown', onKeyDown, false);
+    }};
+    function onContextMenu(event) {{
+      if (scope.enabled === true) {{
+        event.preventDefault();
+      }}
+    }}
+    function onMouseDown(event) {{
+      if (scope.enabled === false) return;
+      if (event.button === 0 && scope.mouseButtons.LEFT === THREE.MOUSE.ROTATE ||
+          event.button === 1 && scope.mouseButtons.MIDDLE === THREE.MOUSE.DOLLY ||
+          event.button === 2 && scope.mouseButtons.RIGHT === THREE.MOUSE.PAN) {{
+        event.preventDefault();
+        mouseDownPosition.set(event.clientX, event.clientY);
+        currentState = (event.button === 0) ? state.ROTATE : (event.button === 1) ? state.DOLLY : state.PAN;
+        scope.domElement.addEventListener('mousemove', onMouseMove, false);
+        window.addEventListener('mouseup', onMouseUp, false);
+      }}
+    }}
+    function onMouseMove(event) {{
+      if (scope.enabled === false) return;
+      event.preventDefault();
+      var movementX = event.movementX || event.mozMovementX || event.webkitMovementX || 0;
+      var movementY = event.movementY || event.mozMovementY || event.webkitMovementY || 0;
+      if (currentState === state.ROTATE && scope.enableRotate === true) {{
+        var element = scope.domElement === document ? scope.domElement.body : scope.domElement;
+        rotateLeft(2 * Math.PI * movementX / element.clientHeight * scope.rotateSpeed);
+        rotateUp(2 * Math.PI * movementY / element.clientHeight * scope.rotateSpeed);
+      }} else if (currentState === state.PAN && scope.enablePan === true) {{
+        pan(movementX, movementY);
+      }}
+    }}
+    function onMouseUp(event) {{
+      if (scope.enabled === false) return;
+      currentState = state.NONE;
+      scope.domElement.removeEventListener('mousemove', onMouseMove, false);
+      window.removeEventListener('mouseup', onMouseUp, false);
+    }}
+    function onMouseWheel(event) {{
+      if (scope.enabled === false || scope.enableZoom === false) return;
+      event.preventDefault();
+      var delta = 0;
+      if (event.deltaY) {{
+        delta = event.deltaY;
+      }} else if (event.wheelDelta) {{
+        delta = -event.wheelDelta;
+      }}
+      if (delta > 0) {{
+        dollyIn(1.1);
+      }} else {{
+        dollyOut(1.1);
+      }}
+    }}
+    function onKeyDown(event) {{
+      if (scope.enabled === false || scope.enablePan === false) return;
+      switch (event.keyCode) {{
+        case scope.keys.LEFT:
+          panLeft(scope.keyPanSpeed);
+          break;
+        case scope.keys.RIGHT:
+          panLeft(-scope.keyPanSpeed);
+          break;
+        case scope.keys.UP:
+          panUp(scope.keyPanSpeed);
+          break;
+        case scope.keys.BOTTOM:
+          panUp(-scope.keyPanSpeed);
+          break;
+      }}
+    }}
+    function onTouchStart(event) {{
+      if (scope.enabled === false) return;
+      switch (event.touches.length) {{
+        case 1:
+          touchStartTime = Date.now();
+          touchStartPosition.set(event.touches[0].clientX, event.touches[0].clientY);
+          currentState = state.TOUCH_ROTATE;
+          break;
+        case 2:
+          var dx = event.touches[0].clientX - event.touches[1].clientX;
+          var dy = event.touches[0].clientY - event.touches[1].clientY;
+          touchStartDistance = Math.sqrt(dx * dx + dy * dy);
+          currentState = state.TOUCH_DOLLY_PAN;
+          break;
+        default:
+          currentState = state.NONE;
+      }}
+    }}
+    function onTouchEnd(event) {{
+      currentState = state.NONE;
+    }}
+    function onTouchMove(event) {{
+      if (scope.enabled === false) return;
+      event.preventDefault();
+      switch (event.touches.length) {{
+        case 1:
+          if (currentState === state.TOUCH_ROTATE && scope.enableRotate === true) {{
+            var deltaX = event.touches[0].clientX - touchStartPosition.x;
+            var deltaY = event.touches[0].clientY - touchStartPosition.y;
+            touchStartPosition.set(event.touches[0].clientX, event.touches[0].clientY);
+            var element = scope.domElement === document ? scope.domElement.body : scope.domElement;
+            rotateLeft(2 * Math.PI * deltaX / element.clientHeight * scope.rotateSpeed);
+            rotateUp(2 * Math.PI * deltaY / element.clientHeight * scope.rotateSpeed);
+          }}
+          break;
+        case 2:
+          if (currentState === state.TOUCH_DOLLY_PAN) {{
+            var dx = event.touches[0].clientX - event.touches[1].clientX;
+            var dy = event.touches[0].clientY - event.touches[1].clientY;
+            var distance = Math.sqrt(dx * dx + dy * dy);
+            if (scope.enableZoom === true) {{
+              var factor = touchStartDistance / distance;
+              if (factor !== Infinity) {{
+                scale *= factor;
+              }}
+            }}
+            touchStartDistance = distance;
+            if (scope.enablePan === true) {{
+              var x = (event.touches[0].clientX + event.touches[1].clientX) / 2;
+              var y = (event.touches[0].clientY + event.touches[1].clientY) / 2;
+              var deltaX = x - touchStartPosition.x;
+              var deltaY = y - touchStartPosition.y;
+              touchStartPosition.set(x, y);
+              pan(deltaX, deltaY);
+            }}
+          }}
+          break;
+      }}
+    }}
+    scope.domElement.addEventListener('contextmenu', onContextMenu, false);
+    scope.domElement.addEventListener('mousedown', onMouseDown, false);
+    scope.domElement.addEventListener('wheel', onMouseWheel, false);
+    scope.domElement.addEventListener('touchstart', onTouchStart, false);
+    scope.domElement.addEventListener('touchend', onTouchEnd, false);
+    scope.domElement.addEventListener('touchmove', onTouchMove, false);
+    window.addEventListener('keydown', onKeyDown, false);
+    spherical.setFromVector3(scope.camera.position.sub(scope.target));
+    lastPosition.copy(scope.camera.position);
+  }};
+  // End of OrbitControls implementation
+  </script>
+</head>
+<body>
+<script>
+const initialState = {json.dumps(initial_state)};
+const moves = {json.dumps(moves)};
+const orders = {json.dumps(indince)};
+
+let scene, camera, renderer, controls;
+let stickers = {{}}; // 保存每个小贴片的Mesh
+
+init();
+animate();
+
+function init() {{
+    scene = new THREE.Scene();
+
+    camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 0.1, 1000);
+    camera.position.set(6, 6, 6);
+
+    renderer = new THREE.WebGLRenderer({{ antialias: true }});
+    renderer.setSize(window.innerWidth, window.innerHeight);
+    document.body.appendChild(renderer.domElement);
+
+    // 轨道控制器
+    controls = new THREE.OrbitControls(camera, renderer.domElement);
+    controls.target.set(0, 0, 0);
+    controls.enableDamping = true;
+    controls.dampingFactor = 0.05;
+    controls.minDistance = 3;
+    controls.maxDistance = 20;
+    controls.update();
+
+    // 灯光
+    const ambientLight = new THREE.AmbientLight(0xffffff, 0.6);
+    scene.add(ambientLight);
+    const dirLight = new THREE.DirectionalLight(0xffffff, 0.8);
+    dirLight.position.set(5, 10, 7);
+    scene.add(dirLight);
+
+    // 创建魔���
+    createCube(initialState, orders);
+
+    // 窗口自适应
+    window.addEventListener('resize', onWindowResize, false);
+
+    // 播放颜色变化
+    playMoves(moves, 1600);
+}}
+function makeNumberTexture(number, size = 128) {{
+    const canvas = document.createElement('canvas');
+    canvas.width = size;
+    canvas.height = size;
+    const ctx = canvas.getContext('2d');
+
+    // 背景透明
+    ctx.clearRect(0, 0, size, size);
+
+    // 字体样式
+    ctx.fillStyle = 'black';
+    ctx.font = `${{size * 0.7}}px Arial`;
+    ctx.textAlign = 'center';
+    ctx.textBaseline = 'middle';
+
+    // 画数字
+    ctx.fillText(number.toString(), size / 2, size / 2);
+
+    // 创建纹理
+    const texture = new THREE.CanvasTexture(canvas);
+    texture.needsUpdate = true;
+    return texture;
+}}
+
+function createCube(state, orders) {{
+    const stickerSize = 0.9;
+    const gap = 0.05;
+    const offset = (stickerSize + gap);
+
+    // 每个面的方向和偏移
+    const faceConfig = {{
+        U: {{ normal: [0, 1, 0], base: [0, 1.5, 0], udir: [1, 0, 0], vdir: [0, 0, -1] }},
+        D: {{ normal: [0, -1, 0], base: [0, -1.5, 0], udir: [1, 0, 0], vdir: [0, 0, 1] }},
+        F: {{ normal: [0, 0, 1], base: [0, 0, 1.5], udir: [1, 0, 0], vdir: [0, -1, 0] }},
+        B: {{ normal: [0, 0, -1], base: [0, 0, -1.5], udir: [-1, 0, 0], vdir: [0, -1, 0] }},
+        L: {{ normal: [-1, 0, 0], base: [-1.5, 0, 0], udir: [0, 0, -1], vdir: [0, -1, 0] }},
+        R: {{ normal: [1, 0, 0], base: [1.5, 0, 0], udir: [0, 0, 1], vdir: [0, -1, 0] }},
+    }};
+
+    for (let face in state) {{
+      let colors = state[face];
+      let cfg = faceConfig[face];
+      let numbers = orders[face];
+      for (let i = 0; i < 9; i++) {{
+        let row = Math.floor(i / 3);
+        let col = i % 3;
+        let centerOffsetU = (col - 1) * offset;
+        let centerOffsetV = (row - 1) * offset;
+
+        let px = cfg.base[0] + cfg.udir[0] * centerOffsetU + cfg.vdir[0] * centerOffsetV;
+        let py = cfg.base[1] + cfg.udir[1] * centerOffsetU + cfg.vdir[1] * centerOffsetV;
+        let pz = cfg.base[2] + cfg.udir[2] * centerOffsetU + cfg.vdir[2] * centerOffsetV;
+
+        // 颜色贴图
+        let colorMaterial = new THREE.MeshLambertMaterial({{ color: colors[i] }});
+
+        // 数字贴图
+        let numberTexture = makeNumberTexture(numbers[i]);
+        let numberMaterial = new THREE.MeshBasicMaterial({{ map: numberTexture, transparent: true }});
+
+        // 创建面片（贴纸）
+        let geometry = new THREE.PlaneGeometry(stickerSize, stickerSize);
+
+        // 创建颜色面
+        let sticker = new THREE.Mesh(geometry, colorMaterial);
+
+        // 创建数字面，稍微抬高避免 z-fighting
+        let numberPlane = new THREE.Mesh(geometry, numberMaterial);
+        numberPlane.position.x += cfg.normal[0] * 0.1;
+        numberPlane.position.y += cfg.normal[1] * 0.1;
+        numberPlane.position.z += cfg.normal[2] * 0.1;
+
+        // 旋转对齐
+        let normal = new THREE.Vector3(...cfg.normal);
+        let up = new THREE.Vector3(...cfg.vdir).negate();
+        let quaternion = new THREE.Quaternion().setFromUnitVectors(new THREE.Vector3(0, 0, 1), normal);
+        sticker.quaternion.multiply(quaternion);
+        numberPlane.quaternion.multiply(quaternion);
+
+        // 设置位置
+        sticker.position.set(px, py, pz);
+        numberPlane.position.set(px, py, pz + 0.01);
+
+        scene.add(sticker);
+        scene.add(numberPlane);
+
+        stickers[face + i] = sticker;
+      }}
+    }}
+}}
+
+function updateColors(state) {{
+    for (let key in stickers) {{
+        let face = key[0];
+        let idx = parseInt(key.slice(1));
+        stickers[key].material.color.set(state[face][idx]);
+    }}
+}}
+
+function playMoves(moves, interval) {{
+    let step = 0;
+    setInterval(() => {{
+        if (step < moves.length) {{
+            updateColors(moves[step]);
+            step++;
+        }}
+    }}, interval);
+}}
+
+function onWindowResize() {{
+    camera.aspect = window.innerWidth / window.innerHeight;
+    camera.updateProjectionMatrix();
+    renderer.setSize(window.innerWidth, window.innerHeight);
+}}
+
+function animate() {{
+    requestAnimationFrame(animate);
+    controls.update();
+    renderer.render(scene, camera);
+}}
+</script>
+</body>
+</html>
+"""
+    with open(output_file, "w", encoding="utf-8") as f:
+        f.write(html_template)
+    print(f"已生成 {output_file} ，用浏览器打开即可。")
+
+
+# ===== 测试示例 =====
+if __name__ == "__main__":
+    initial_state = {
+        "U": ["white"] * 9,
+        "D": ["yellow"] * 9,
+        "F": ["red"] * 9,
+        "B": ["orange"] * 9,
+        "L": ["blue"] * 9,
+        "R": ["green"] * 9
+    }
+
+    # 生成几个动作后的状态（这里只是演示，实际可根据魔方动作计算）
+    move1 = initial_state.copy()
+    move1 = {f: c[:] for f, c in move1.items()}
+    move1["F"][0] = "blue"
+
+    move2 = {f: c[:] for f, c in move1.items()}
+    move2["R"][4] = "white"
+
+    moves = [move1, move2]
+
+    generate_rubiks_html(initial_state, moves)

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+padding:"inner"+a,content:b,"":"outer"+a},function(c,d){n.fn[d]=function(d,e){var f=arguments.length&&(c||"boolean"!=typeof d),g=c||(d===!0||e===!0?"margin":"border");return Y(this,function(b,c,d){var e;return n.isWindow(b)?b.document.documentElement["client"+a]:9===b.nodeType?(e=b.documentElement,Math.max(b.body["scroll"+a],e["scroll"+a],b.body["offset"+a],e["offset"+a],e["client"+a])):void 0===d?n.css(b,c,g):n.style(b,c,d,g)},b,f?d:void 0,f,null)}})}),n.fn.extend({bind:function(a,b,c){return this.on(a,null,b,c)},unbind:function(a,b){return this.off(a,null,b)},delegate:function(a,b,c,d){return this.on(b,a,c,d)},undelegate:function(a,b,c){return 1===arguments.length?this.off(a,"**"):this.off(b,a||"**",c)}}),n.fn.size=function(){return this.length},n.fn.andSelf=n.fn.addBack,"function"==typeof define&&define.amd&&define("jquery",[],function(){return n});var nc=a.jQuery,oc=a.$;return n.noConflict=function(b){return a.$===n&&(a.$=oc),b&&a.jQuery===n&&(a.jQuery=nc),n},b||(a.jQuery=a.$=n),n});

web/cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/less/alerts.less

@@ -0,0 +1,73 @@
+//
+// Alerts
+// --------------------------------------------------
+
+
+// Base styles
+// -------------------------
+
+.alert {
+  padding: @alert-padding;
+  margin-bottom: @line-height-computed;
+  border: 1px solid transparent;
+  border-radius: @alert-border-radius;
+
+  // Headings for larger alerts
+  h4 {
+    margin-top: 0;
+    // Specified for the h4 to prevent conflicts of changing @headings-color
+    color: inherit;
+  }
+
+  // Provide class for links that match alerts
+  .alert-link {
+    font-weight: @alert-link-font-weight;
+  }
+
+  // Improve alignment and spacing of inner content
+  > p,
+  > ul {
+    margin-bottom: 0;
+  }
+
+  > p + p {
+    margin-top: 5px;
+  }
+}
+
+// Dismissible alerts
+//
+// Expand the right padding and account for the close button's positioning.
+
+.alert-dismissable, // The misspelled .alert-dismissable was deprecated in 3.2.0.
+.alert-dismissible {
+  padding-right: (@alert-padding + 20);
+
+  // Adjust close link position
+  .close {
+    position: relative;
+    top: -2px;
+    right: -21px;
+    color: inherit;
+  }
+}
+
+// Alternate styles
+//
+// Generate contextual modifier classes for colorizing the alert.
+
+.alert-success {
+  .alert-variant(@alert-success-bg; @alert-success-border; @alert-success-text);
+}
+
+.alert-info {
+  .alert-variant(@alert-info-bg; @alert-info-border; @alert-info-text);
+}
+
+.alert-warning {
+  .alert-variant(@alert-warning-bg; @alert-warning-border; @alert-warning-text);
+}
+
+.alert-danger {
+  .alert-variant(@alert-danger-bg; @alert-danger-border; @alert-danger-text);
+}

web/cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/less/badges.less

@@ -0,0 +1,66 @@
+//
+// Badges
+// --------------------------------------------------
+
+
+// Base class
+.badge {
+  display: inline-block;
+  min-width: 10px;
+  padding: 3px 7px;
+  font-size: @font-size-small;
+  font-weight: @badge-font-weight;
+  color: @badge-color;
+  line-height: @badge-line-height;
+  vertical-align: middle;
+  white-space: nowrap;
+  text-align: center;
+  background-color: @badge-bg;
+  border-radius: @badge-border-radius;
+
+  // Empty badges collapse automatically (not available in IE8)
+  &:empty {
+    display: none;
+  }
+
+  // Quick fix for badges in buttons
+  .btn & {
+    position: relative;
+    top: -1px;
+  }
+
+  .btn-xs &,
+  .btn-group-xs > .btn & {
+    top: 0;
+    padding: 1px 5px;
+  }
+
+  // Hover state, but only for links
+  a& {
+    &:hover,
+    &:focus {
+      color: @badge-link-hover-color;
+      text-decoration: none;
+      cursor: pointer;
+    }
+  }
+
+  // Account for badges in navs
+  .list-group-item.active > &,
+  .nav-pills > .active > a > & {
+    color: @badge-active-color;
+    background-color: @badge-active-bg;
+  }
+
+  .list-group-item > & {
+    float: right;
+  }
+
+  .list-group-item > & + & {
+    margin-right: 5px;
+  }
+
+  .nav-pills > li > a > & {
+    margin-left: 3px;
+  }
+}

web/cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/less/breadcrumbs.less

@@ -0,0 +1,26 @@
+//
+// Breadcrumbs
+// --------------------------------------------------
+
+
+.breadcrumb {
+  padding: @breadcrumb-padding-vertical @breadcrumb-padding-horizontal;
+  margin-bottom: @line-height-computed;
+  list-style: none;
+  background-color: @breadcrumb-bg;
+  border-radius: @border-radius-base;
+
+  > li {
+    display: inline-block;
+
+    + li:before {
+      content: "@{breadcrumb-separator}\00a0"; // Unicode space added since inline-block means non-collapsing white-space
+      padding: 0 5px;
+      color: @breadcrumb-color;
+    }
+  }
+
+  > .active {
+    color: @breadcrumb-active-color;
+  }
+}

web/cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/less/button-groups.less

@@ -0,0 +1,244 @@
+//
+// Button groups
+// --------------------------------------------------
+
+// Make the div behave like a button
+.btn-group,
+.btn-group-vertical {
+  position: relative;
+  display: inline-block;
+  vertical-align: middle; // match .btn alignment given font-size hack above
+  > .btn {
+    position: relative;
+    float: left;
+    // Bring the "active" button to the front
+    &:hover,
+    &:focus,
+    &:active,
+    &.active {
+      z-index: 2;
+    }
+  }
+}
+
+// Prevent double borders when buttons are next to each other
+.btn-group {
+  .btn + .btn,
+  .btn + .btn-group,
+  .btn-group + .btn,
+  .btn-group + .btn-group {
+    margin-left: -1px;
+  }
+}
+
+// Optional: Group multiple button groups together for a toolbar
+.btn-toolbar {
+  margin-left: -5px; // Offset the first child's margin
+  &:extend(.clearfix all);
+
+  .btn,
+  .btn-group,
+  .input-group {
+    float: left;
+  }
+  > .btn,
+  > .btn-group,
+  > .input-group {
+    margin-left: 5px;
+  }
+}
+
+.btn-group > .btn:not(:first-child):not(:last-child):not(.dropdown-toggle) {
+  border-radius: 0;
+}
+
+// Set corners individual because sometimes a single button can be in a .btn-group and we need :first-child and :last-child to both match
+.btn-group > .btn:first-child {
+  margin-left: 0;
+  &:not(:last-child):not(.dropdown-toggle) {
+    .border-right-radius(0);
+  }
+}
+// Need .dropdown-toggle since :last-child doesn't apply, given that a .dropdown-menu is used immediately after it
+.btn-group > .btn:last-child:not(:first-child),
+.btn-group > .dropdown-toggle:not(:first-child) {
+  .border-left-radius(0);
+}
+
+// Custom edits for including btn-groups within btn-groups (useful for including dropdown buttons within a btn-group)
+.btn-group > .btn-group {
+  float: left;
+}
+.btn-group > .btn-group:not(:first-child):not(:last-child) > .btn {
+  border-radius: 0;
+}
+.btn-group > .btn-group:first-child:not(:last-child) {
+  > .btn:last-child,
+  > .dropdown-toggle {
+    .border-right-radius(0);
+  }
+}
+.btn-group > .btn-group:last-child:not(:first-child) > .btn:first-child {
+  .border-left-radius(0);
+}
+
+// On active and open, don't show outline
+.btn-group .dropdown-toggle:active,
+.btn-group.open .dropdown-toggle {
+  outline: 0;
+}
+
+
+// Sizing
+//
+// Remix the default button sizing classes into new ones for easier manipulation.
+
+.btn-group-xs > .btn { &:extend(.btn-xs); }
+.btn-group-sm > .btn { &:extend(.btn-sm); }
+.btn-group-lg > .btn { &:extend(.btn-lg); }
+
+
+// Split button dropdowns
+// ----------------------
+
+// Give the line between buttons some depth
+.btn-group > .btn + .dropdown-toggle {
+  padding-left: 8px;
+  padding-right: 8px;
+}
+.btn-group > .btn-lg + .dropdown-toggle {
+  padding-left: 12px;
+  padding-right: 12px;
+}
+
+// The clickable button for toggling the menu
+// Remove the gradient and set the same inset shadow as the :active state
+.btn-group.open .dropdown-toggle {
+  .box-shadow(inset 0 3px 5px rgba(0,0,0,.125));
+
+  // Show no shadow for `.btn-link` since it has no other button styles.
+  &.btn-link {
+    .box-shadow(none);
+  }
+}
+
+
+// Reposition the caret
+.btn .caret {
+  margin-left: 0;
+}
+// Carets in other button sizes
+.btn-lg .caret {
+  border-width: @caret-width-large @caret-width-large 0;
+  border-bottom-width: 0;
+}
+// Upside down carets for .dropup
+.dropup .btn-lg .caret {
+  border-width: 0 @caret-width-large @caret-width-large;
+}
+
+
+// Vertical button groups
+// ----------------------
+
+.btn-group-vertical {
+  > .btn,
+  > .btn-group,
+  > .btn-group > .btn {
+    display: block;
+    float: none;
+    width: 100%;
+    max-width: 100%;
+  }
+
+  // Clear floats so dropdown menus can be properly placed
+  > .btn-group {
+    &:extend(.clearfix all);
+    > .btn {
+      float: none;
+    }
+  }
+
+  > .btn + .btn,
+  > .btn + .btn-group,
+  > .btn-group + .btn,
+  > .btn-group + .btn-group {
+    margin-top: -1px;
+    margin-left: 0;
+  }
+}
+
+.btn-group-vertical > .btn {
+  &:not(:first-child):not(:last-child) {
+    border-radius: 0;
+  }
+  &:first-child:not(:last-child) {
+    .border-top-radius(@btn-border-radius-base);
+    .border-bottom-radius(0);
+  }
+  &:last-child:not(:first-child) {
+    .border-top-radius(0);
+    .border-bottom-radius(@btn-border-radius-base);
+  }
+}
+.btn-group-vertical > .btn-group:not(:first-child):not(:last-child) > .btn {
+  border-radius: 0;
+}
+.btn-group-vertical > .btn-group:first-child:not(:last-child) {
+  > .btn:last-child,
+  > .dropdown-toggle {
+    .border-bottom-radius(0);
+  }
+}
+.btn-group-vertical > .btn-group:last-child:not(:first-child) > .btn:first-child {
+  .border-top-radius(0);
+}
+
+
+// Justified button groups
+// ----------------------
+
+.btn-group-justified {
+  display: table;
+  width: 100%;
+  table-layout: fixed;
+  border-collapse: separate;
+  > .btn,
+  > .btn-group {
+    float: none;
+    display: table-cell;
+    width: 1%;
+  }
+  > .btn-group .btn {
+    width: 100%;
+  }
+
+  > .btn-group .dropdown-menu {
+    left: auto;
+  }
+}
+
+
+// Checkbox and radio options
+//
+// In order to support the browser's form validation feedback, powered by the
+// `required` attribute, we have to "hide" the inputs via `clip`. We cannot use
+// `display: none;` or `visibility: hidden;` as that also hides the popover.
+// Simply visually hiding the inputs via `opacity` would leave them clickable in
+// certain cases which is prevented by using `clip` and `pointer-events`.
+// This way, we ensure a DOM element is visible to position the popover from.
+//
+// See https://github.com/twbs/bootstrap/pull/12794 and
+// https://github.com/twbs/bootstrap/pull/14559 for more information.
+
+[data-toggle="buttons"] {
+  > .btn,
+  > .btn-group > .btn {
+    input[type="radio"],
+    input[type="checkbox"] {
+      position: absolute;
+      clip: rect(0,0,0,0);
+      pointer-events: none;
+    }
+  }
+}

web/cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/less/buttons.less

@@ -0,0 +1,166 @@
+//
+// Buttons
+// --------------------------------------------------
+
+
+// Base styles
+// --------------------------------------------------
+
+.btn {
+  display: inline-block;
+  margin-bottom: 0; // For input.btn
+  font-weight: @btn-font-weight;
+  text-align: center;
+  vertical-align: middle;
+  touch-action: manipulation;
+  cursor: pointer;
+  background-image: none; // Reset unusual Firefox-on-Android default style; see https://github.com/necolas/normalize.css/issues/214
+  border: 1px solid transparent;
+  white-space: nowrap;
+  .button-size(@padding-base-vertical; @padding-base-horizontal; @font-size-base; @line-height-base; @btn-border-radius-base);
+  .user-select(none);
+
+  &,
+  &:active,
+  &.active {
+    &:focus,
+    &.focus {
+      .tab-focus();
+    }
+  }
+
+  &:hover,
+  &:focus,
+  &.focus {
+    color: @btn-default-color;
+    text-decoration: none;
+  }
+
+  &:active,
+  &.active {
+    outline: 0;
+    background-image: none;
+    .box-shadow(inset 0 3px 5px rgba(0,0,0,.125));
+  }
+
+  &.disabled,
+  &[disabled],
+  fieldset[disabled] & {
+    cursor: @cursor-disabled;
+    .opacity(.65);
+    .box-shadow(none);
+  }
+
+  a& {
+    &.disabled,
+    fieldset[disabled] & {
+      pointer-events: none; // Future-proof disabling of clicks on `<a>` elements
+    }
+  }
+}
+
+
+// Alternate buttons
+// --------------------------------------------------
+
+.btn-default {
+  .button-variant(@btn-default-color; @btn-default-bg; @btn-default-border);
+}
+.btn-primary {
+  .button-variant(@btn-primary-color; @btn-primary-bg; @btn-primary-border);
+}
+// Success appears as green
+.btn-success {
+  .button-variant(@btn-success-color; @btn-success-bg; @btn-success-border);
+}
+// Info appears as blue-green
+.btn-info {
+  .button-variant(@btn-info-color; @btn-info-bg; @btn-info-border);
+}
+// Warning appears as orange
+.btn-warning {
+  .button-variant(@btn-warning-color; @btn-warning-bg; @btn-warning-border);
+}
+// Danger and error appear as red
+.btn-danger {
+  .button-variant(@btn-danger-color; @btn-danger-bg; @btn-danger-border);
+}
+
+
+// Link buttons
+// -------------------------
+
+// Make a button look and behave like a link
+.btn-link {
+  color: @link-color;
+  font-weight: normal;
+  border-radius: 0;
+
+  &,
+  &:active,
+  &.active,
+  &[disabled],
+  fieldset[disabled] & {
+    background-color: transparent;
+    .box-shadow(none);
+  }
+  &,
+  &:hover,
+  &:focus,
+  &:active {
+    border-color: transparent;
+  }
+  &:hover,
+  &:focus {
+    color: @link-hover-color;
+    text-decoration: @link-hover-decoration;
+    background-color: transparent;
+  }
+  &[disabled],
+  fieldset[disabled] & {
+    &:hover,
+    &:focus {
+      color: @btn-link-disabled-color;
+      text-decoration: none;
+    }
+  }
+}
+
+
+// Button Sizes
+// --------------------------------------------------
+
+.btn-lg {
+  // line-height: ensure even-numbered height of button next to large input
+  .button-size(@padding-large-vertical; @padding-large-horizontal; @font-size-large; @line-height-large; @btn-border-radius-large);
+}
+.btn-sm {
+  // line-height: ensure proper height of button next to small input
+  .button-size(@padding-small-vertical; @padding-small-horizontal; @font-size-small; @line-height-small; @btn-border-radius-small);
+}
+.btn-xs {
+  .button-size(@padding-xs-vertical; @padding-xs-horizontal; @font-size-small; @line-height-small; @btn-border-radius-small);
+}
+
+
+// Block button
+// --------------------------------------------------
+
+.btn-block {
+  display: block;
+  width: 100%;
+}
+
+// Vertically space out multiple block buttons
+.btn-block + .btn-block {
+  margin-top: 5px;
+}
+
+// Specificity overrides
+input[type="submit"],
+input[type="reset"],
+input[type="button"] {
+  &.btn-block {
+    width: 100%;
+  }
+}

web/cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/less/carousel.less

@@ -0,0 +1,270 @@
+//
+// Carousel
+// --------------------------------------------------
+
+
+// Wrapper for the slide container and indicators
+.carousel {
+  position: relative;
+}
+
+.carousel-inner {
+  position: relative;
+  overflow: hidden;
+  width: 100%;
+
+  > .item {
+    display: none;
+    position: relative;
+    .transition(.6s ease-in-out left);
+
+    // Account for jankitude on images
+    > img,
+    > a > img {
+      &:extend(.img-responsive);
+      line-height: 1;
+    }
+
+    // WebKit CSS3 transforms for supported devices
+    @media all and (transform-3d), (-webkit-transform-3d) {
+      .transition-transform(~'0.6s ease-in-out');
+      .backface-visibility(~'hidden');
+      .perspective(1000px);
+
+      &.next,
+      &.active.right {
+        .translate3d(100%, 0, 0);
+        left: 0;
+      }
+      &.prev,
+      &.active.left {
+        .translate3d(-100%, 0, 0);
+        left: 0;
+      }
+      &.next.left,
+      &.prev.right,
+      &.active {
+        .translate3d(0, 0, 0);
+        left: 0;
+      }
+    }
+  }
+
+  > .active,
+  > .next,
+  > .prev {
+    display: block;
+  }
+
+  > .active {
+    left: 0;
+  }
+
+  > .next,
+  > .prev {
+    position: absolute;
+    top: 0;
+    width: 100%;
+  }
+
+  > .next {
+    left: 100%;
+  }
+  > .prev {
+    left: -100%;
+  }
+  > .next.left,
+  > .prev.right {
+    left: 0;
+  }
+
+  > .active.left {
+    left: -100%;
+  }
+  > .active.right {
+    left: 100%;
+  }
+
+}
+
+// Left/right controls for nav
+// ---------------------------
+
+.carousel-control {
+  position: absolute;
+  top: 0;
+  left: 0;
+  bottom: 0;
+  width: @carousel-control-width;
+  .opacity(@carousel-control-opacity);
+  font-size: @carousel-control-font-size;
+  color: @carousel-control-color;
+  text-align: center;
+  text-shadow: @carousel-text-shadow;
+  background-color: rgba(0, 0, 0, 0); // Fix IE9 click-thru bug
+  // We can't have this transition here because WebKit cancels the carousel
+  // animation if you trip this while in the middle of another animation.
+
+  // Set gradients for backgrounds
+  &.left {
+    #gradient > .horizontal(@start-color: rgba(0,0,0,.5); @end-color: rgba(0,0,0,.0001));
+  }
+  &.right {
+    left: auto;
+    right: 0;
+    #gradient > .horizontal(@start-color: rgba(0,0,0,.0001); @end-color: rgba(0,0,0,.5));
+  }
+
+  // Hover/focus state
+  &:hover,
+  &:focus {
+    outline: 0;
+    color: @carousel-control-color;
+    text-decoration: none;
+    .opacity(.9);
+  }
+
+  // Toggles
+  .icon-prev,
+  .icon-next,
+  .glyphicon-chevron-left,
+  .glyphicon-chevron-right {
+    position: absolute;
+    top: 50%;
+    margin-top: -10px;
+    z-index: 5;
+    display: inline-block;
+  }
+  .icon-prev,
+  .glyphicon-chevron-left {
+    left: 50%;
+    margin-left: -10px;
+  }
+  .icon-next,
+  .glyphicon-chevron-right {
+    right: 50%;
+    margin-right: -10px;
+  }
+  .icon-prev,
+  .icon-next {
+    width:  20px;
+    height: 20px;
+    line-height: 1;
+    font-family: serif;
+  }
+
+
+  .icon-prev {
+    &:before {
+      content: '\2039';// SINGLE LEFT-POINTING ANGLE QUOTATION MARK (U+2039)
+    }
+  }
+  .icon-next {
+    &:before {
+      content: '\203a';// SINGLE RIGHT-POINTING ANGLE QUOTATION MARK (U+203A)
+    }
+  }
+}
+
+// Optional indicator pips
+//
+// Add an unordered list with the following class and add a list item for each
+// slide your carousel holds.
+
+.carousel-indicators {
+  position: absolute;
+  bottom: 10px;
+  left: 50%;
+  z-index: 15;
+  width: 60%;
+  margin-left: -30%;
+  padding-left: 0;
+  list-style: none;
+  text-align: center;
+
+  li {
+    display: inline-block;
+    width:  10px;
+    height: 10px;
+    margin: 1px;
+    text-indent: -999px;
+    border: 1px solid @carousel-indicator-border-color;
+    border-radius: 10px;
+    cursor: pointer;
+
+    // IE8-9 hack for event handling
+    //
+    // Internet Explorer 8-9 does not support clicks on elements without a set
+    // `background-color`. We cannot use `filter` since that's not viewed as a
+    // background color by the browser. Thus, a hack is needed.
+    // See https://developer.mozilla.org/en-US/docs/Web/Events/click#Internet_Explorer
+    //
+    // For IE8, we set solid black as it doesn't support `rgba()`. For IE9, we
+    // set alpha transparency for the best results possible.
+    background-color: #000 \9; // IE8
+    background-color: rgba(0,0,0,0); // IE9
+  }
+  .active {
+    margin: 0;
+    width:  12px;
+    height: 12px;
+    background-color: @carousel-indicator-active-bg;
+  }
+}
+
+// Optional captions
+// -----------------------------
+// Hidden by default for smaller viewports
+.carousel-caption {
+  position: absolute;
+  left: 15%;
+  right: 15%;
+  bottom: 20px;
+  z-index: 10;
+  padding-top: 20px;
+  padding-bottom: 20px;
+  color: @carousel-caption-color;
+  text-align: center;
+  text-shadow: @carousel-text-shadow;
+  & .btn {
+    text-shadow: none; // No shadow for button elements in carousel-caption
+  }
+}
+
+
+// Scale up controls for tablets and up
+@media screen and (min-width: @screen-sm-min) {
+
+  // Scale up the controls a smidge
+  .carousel-control {
+    .glyphicon-chevron-left,
+    .glyphicon-chevron-right,
+    .icon-prev,
+    .icon-next {
+      width: (@carousel-control-font-size * 1.5);
+      height: (@carousel-control-font-size * 1.5);
+      margin-top: (@carousel-control-font-size / -2);
+      font-size: (@carousel-control-font-size * 1.5);
+    }
+    .glyphicon-chevron-left,
+    .icon-prev {
+      margin-left: (@carousel-control-font-size / -2);
+    }
+    .glyphicon-chevron-right,
+    .icon-next {
+      margin-right: (@carousel-control-font-size / -2);
+    }
+  }
+
+  // Show and left align the captions
+  .carousel-caption {
+    left: 20%;
+    right: 20%;
+    padding-bottom: 30px;
+  }
+
+  // Move up the indicators
+  .carousel-indicators {
+    bottom: 20px;
+  }
+}

web/cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/less/close.less

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+//
+// Close icons
+// --------------------------------------------------
+
+
+.close {
+  float: right;
+  font-size: (@font-size-base * 1.5);
+  font-weight: @close-font-weight;
+  line-height: 1;
+  color: @close-color;
+  text-shadow: @close-text-shadow;
+  .opacity(.2);
+
+  &:hover,
+  &:focus {
+    color: @close-color;
+    text-decoration: none;
+    cursor: pointer;
+    .opacity(.5);
+  }
+
+  // Additional properties for button version
+  // iOS requires the button element instead of an anchor tag.
+  // If you want the anchor version, it requires `href="#"`.
+  // See https://developer.mozilla.org/en-US/docs/Web/Events/click#Safari_Mobile
+  button& {
+    padding: 0;
+    cursor: pointer;
+    background: transparent;
+    border: 0;
+    -webkit-appearance: none;
+  }
+}

web/cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/less/code.less

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+//
+// Code (inline and block)
+// --------------------------------------------------
+
+
+// Inline and block code styles
+code,
+kbd,
+pre,
+samp {
+  font-family: @font-family-monospace;
+}
+
+// Inline code
+code {
+  padding: 2px 4px;
+  font-size: 90%;
+  color: @code-color;
+  background-color: @code-bg;
+  border-radius: @border-radius-base;
+}
+
+// User input typically entered via keyboard
+kbd {
+  padding: 2px 4px;
+  font-size: 90%;
+  color: @kbd-color;
+  background-color: @kbd-bg;
+  border-radius: @border-radius-small;
+  box-shadow: inset 0 -1px 0 rgba(0,0,0,.25);
+
+  kbd {
+    padding: 0;
+    font-size: 100%;
+    font-weight: bold;
+    box-shadow: none;
+  }
+}
+
+// Blocks of code
+pre {
+  display: block;
+  padding: ((@line-height-computed - 1) / 2);
+  margin: 0 0 (@line-height-computed / 2);
+  font-size: (@font-size-base - 1); // 14px to 13px
+  line-height: @line-height-base;
+  word-break: break-all;
+  word-wrap: break-word;
+  color: @pre-color;
+  background-color: @pre-bg;
+  border: 1px solid @pre-border-color;
+  border-radius: @border-radius-base;
+
+  // Account for some code outputs that place code tags in pre tags
+  code {
+    padding: 0;
+    font-size: inherit;
+    color: inherit;
+    white-space: pre-wrap;
+    background-color: transparent;
+    border-radius: 0;
+  }
+}
+
+// Enable scrollable blocks of code
+.pre-scrollable {
+  max-height: @pre-scrollable-max-height;
+  overflow-y: scroll;
+}

web/cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/less/component-animations.less

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+//
+// Component animations
+// --------------------------------------------------
+
+// Heads up!
+//
+// We don't use the `.opacity()` mixin here since it causes a bug with text
+// fields in IE7-8. Source: https://github.com/twbs/bootstrap/pull/3552.
+
+.fade {
+  opacity: 0;
+  .transition(opacity .15s linear);
+  &.in {
+    opacity: 1;
+  }
+}
+
+.collapse {
+  display: none;
+
+  &.in      { display: block; }
+  tr&.in    { display: table-row; }
+  tbody&.in { display: table-row-group; }
+}
+
+.collapsing {
+  position: relative;
+  height: 0;
+  overflow: hidden;
+  .transition-property(~"height, visibility");
+  .transition-duration(.35s);
+  .transition-timing-function(ease);
+}

web/cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/less/dropdowns.less

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+//
+// Dropdown menus
+// --------------------------------------------------
+
+
+// Dropdown arrow/caret
+.caret {
+  display: inline-block;
+  width: 0;
+  height: 0;
+  margin-left: 2px;
+  vertical-align: middle;
+  border-top:   @caret-width-base dashed;
+  border-top:   @caret-width-base solid ~"\9"; // IE8
+  border-right: @caret-width-base solid transparent;
+  border-left:  @caret-width-base solid transparent;
+}
+
+// The dropdown wrapper (div)
+.dropup,
+.dropdown {
+  position: relative;
+}
+
+// Prevent the focus on the dropdown toggle when closing dropdowns
+.dropdown-toggle:focus {
+  outline: 0;
+}
+
+// The dropdown menu (ul)
+.dropdown-menu {
+  position: absolute;
+  top: 100%;
+  left: 0;
+  z-index: @zindex-dropdown;
+  display: none; // none by default, but block on "open" of the menu
+  float: left;
+  min-width: 160px;
+  padding: 5px 0;
+  margin: 2px 0 0; // override default ul
+  list-style: none;
+  font-size: @font-size-base;
+  text-align: left; // Ensures proper alignment if parent has it changed (e.g., modal footer)
+  background-color: @dropdown-bg;
+  border: 1px solid @dropdown-fallback-border; // IE8 fallback
+  border: 1px solid @dropdown-border;
+  border-radius: @border-radius-base;
+  .box-shadow(0 6px 12px rgba(0,0,0,.175));
+  background-clip: padding-box;
+
+  // Aligns the dropdown menu to right
+  //
+  // Deprecated as of 3.1.0 in favor of `.dropdown-menu-[dir]`
+  &.pull-right {
+    right: 0;
+    left: auto;
+  }
+
+  // Dividers (basically an hr) within the dropdown
+  .divider {
+    .nav-divider(@dropdown-divider-bg);
+  }
+
+  // Links within the dropdown menu
+  > li > a {
+    display: block;
+    padding: 3px 20px;
+    clear: both;
+    font-weight: normal;
+    line-height: @line-height-base;
+    color: @dropdown-link-color;
+    white-space: nowrap; // prevent links from randomly breaking onto new lines
+  }
+}
+
+// Hover/Focus state
+.dropdown-menu > li > a {
+  &:hover,
+  &:focus {
+    text-decoration: none;
+    color: @dropdown-link-hover-color;
+    background-color: @dropdown-link-hover-bg;
+  }
+}
+
+// Active state
+.dropdown-menu > .active > a {
+  &,
+  &:hover,
+  &:focus {
+    color: @dropdown-link-active-color;
+    text-decoration: none;
+    outline: 0;
+    background-color: @dropdown-link-active-bg;
+  }
+}
+
+// Disabled state
+//
+// Gray out text and ensure the hover/focus state remains gray
+
+.dropdown-menu > .disabled > a {
+  &,
+  &:hover,
+  &:focus {
+    color: @dropdown-link-disabled-color;
+  }
+
+  // Nuke hover/focus effects
+  &:hover,
+  &:focus {
+    text-decoration: none;
+    background-color: transparent;
+    background-image: none; // Remove CSS gradient
+    .reset-filter();
+    cursor: @cursor-disabled;
+  }
+}
+
+// Open state for the dropdown
+.open {
+  // Show the menu
+  > .dropdown-menu {
+    display: block;
+  }
+
+  // Remove the outline when :focus is triggered
+  > a {
+    outline: 0;
+  }
+}
+
+// Menu positioning
+//
+// Add extra class to `.dropdown-menu` to flip the alignment of the dropdown
+// menu with the parent.
+.dropdown-menu-right {
+  left: auto; // Reset the default from `.dropdown-menu`
+  right: 0;
+}
+// With v3, we enabled auto-flipping if you have a dropdown within a right
+// aligned nav component. To enable the undoing of that, we provide an override
+// to restore the default dropdown menu alignment.
+//
+// This is only for left-aligning a dropdown menu within a `.navbar-right` or
+// `.pull-right` nav component.
+.dropdown-menu-left {
+  left: 0;
+  right: auto;
+}
+
+// Dropdown section headers
+.dropdown-header {
+  display: block;
+  padding: 3px 20px;
+  font-size: @font-size-small;
+  line-height: @line-height-base;
+  color: @dropdown-header-color;
+  white-space: nowrap; // as with > li > a
+}
+
+// Backdrop to catch body clicks on mobile, etc.
+.dropdown-backdrop {
+  position: fixed;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  top: 0;
+  z-index: (@zindex-dropdown - 10);
+}
+
+// Right aligned dropdowns
+.pull-right > .dropdown-menu {
+  right: 0;
+  left: auto;
+}
+
+// Allow for dropdowns to go bottom up (aka, dropup-menu)
+//
+// Just add .dropup after the standard .dropdown class and you're set, bro.
+// TODO: abstract this so that the navbar fixed styles are not placed here?
+
+.dropup,
+.navbar-fixed-bottom .dropdown {
+  // Reverse the caret
+  .caret {
+    border-top: 0;
+    border-bottom: @caret-width-base dashed;
+    border-bottom: @caret-width-base solid ~"\9"; // IE8
+    content: "";
+  }
+  // Different positioning for bottom up menu
+  .dropdown-menu {
+    top: auto;
+    bottom: 100%;
+    margin-bottom: 2px;
+  }
+}
+
+
+// Component alignment
+//
+// Reiterate per navbar.less and the modified component alignment there.
+
+@media (min-width: @grid-float-breakpoint) {
+  .navbar-right {
+    .dropdown-menu {
+      .dropdown-menu-right();
+    }
+    // Necessary for overrides of the default right aligned menu.
+    // Will remove come v4 in all likelihood.
+    .dropdown-menu-left {
+      .dropdown-menu-left();
+    }
+  }
+}

web/cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/less/forms.less

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+//
+// Forms
+// --------------------------------------------------
+
+
+// Normalize non-controls
+//
+// Restyle and baseline non-control form elements.
+
+fieldset {
+  padding: 0;
+  margin: 0;
+  border: 0;
+  // Chrome and Firefox set a `min-width: min-content;` on fieldsets,
+  // so we reset that to ensure it behaves more like a standard block element.
+  // See https://github.com/twbs/bootstrap/issues/12359.
+  min-width: 0;
+}
+
+legend {
+  display: block;
+  width: 100%;
+  padding: 0;
+  margin-bottom: @line-height-computed;
+  font-size: (@font-size-base * 1.5);
+  line-height: inherit;
+  color: @legend-color;
+  border: 0;
+  border-bottom: 1px solid @legend-border-color;
+}
+
+label {
+  display: inline-block;
+  max-width: 100%; // Force IE8 to wrap long content (see https://github.com/twbs/bootstrap/issues/13141)
+  margin-bottom: 5px;
+  font-weight: bold;
+}
+
+
+// Normalize form controls
+//
+// While most of our form styles require extra classes, some basic normalization
+// is required to ensure optimum display with or without those classes to better
+// address browser inconsistencies.
+
+// Override content-box in Normalize (* isn't specific enough)
+input[type="search"] {
+  .box-sizing(border-box);
+}
+
+// Position radios and checkboxes better
+input[type="radio"],
+input[type="checkbox"] {
+  margin: 4px 0 0;
+  margin-top: 1px \9; // IE8-9
+  line-height: normal;
+}
+
+input[type="file"] {
+  display: block;
+}
+
+// Make range inputs behave like textual form controls
+input[type="range"] {
+  display: block;
+  width: 100%;
+}
+
+// Make multiple select elements height not fixed
+select[multiple],
+select[size] {
+  height: auto;
+}
+
+// Focus for file, radio, and checkbox
+input[type="file"]:focus,
+input[type="radio"]:focus,
+input[type="checkbox"]:focus {
+  .tab-focus();
+}
+
+// Adjust output element
+output {
+  display: block;
+  padding-top: (@padding-base-vertical + 1);
+  font-size: @font-size-base;
+  line-height: @line-height-base;
+  color: @input-color;
+}
+
+
+// Common form controls
+//
+// Shared size and type resets for form controls. Apply `.form-control` to any
+// of the following form controls:
+//
+// select
+// textarea
+// input[type="text"]
+// input[type="password"]
+// input[type="datetime"]
+// input[type="datetime-local"]
+// input[type="date"]
+// input[type="month"]
+// input[type="time"]
+// input[type="week"]
+// input[type="number"]
+// input[type="email"]
+// input[type="url"]
+// input[type="search"]
+// input[type="tel"]
+// input[type="color"]
+
+.form-control {
+  display: block;
+  width: 100%;
+  height: @input-height-base; // Make inputs at least the height of their button counterpart (base line-height + padding + border)
+  padding: @padding-base-vertical @padding-base-horizontal;
+  font-size: @font-size-base;
+  line-height: @line-height-base;
+  color: @input-color;
+  background-color: @input-bg;
+  background-image: none; // Reset unusual Firefox-on-Android default style; see https://github.com/necolas/normalize.css/issues/214
+  border: 1px solid @input-border;
+  border-radius: @input-border-radius; // Note: This has no effect on <select>s in some browsers, due to the limited stylability of <select>s in CSS.
+  .box-shadow(inset 0 1px 1px rgba(0,0,0,.075));
+  .transition(~"border-color ease-in-out .15s, box-shadow ease-in-out .15s");
+
+  // Customize the `:focus` state to imitate native WebKit styles.
+  .form-control-focus();
+
+  // Placeholder
+  .placeholder();
+
+  // Unstyle the caret on `<select>`s in IE10+.
+  &::-ms-expand {
+    border: 0;
+    background-color: transparent;
+  }
+
+  // Disabled and read-only inputs
+  //
+  // HTML5 says that controls under a fieldset > legend:first-child won't be
+  // disabled if the fieldset is disabled. Due to implementation difficulty, we
+  // don't honor that edge case; we style them as disabled anyway.
+  &[disabled],
+  &[readonly],
+  fieldset[disabled] & {
+    background-color: @input-bg-disabled;
+    opacity: 1; // iOS fix for unreadable disabled content; see https://github.com/twbs/bootstrap/issues/11655
+  }
+
+  &[disabled],
+  fieldset[disabled] & {
+    cursor: @cursor-disabled;
+  }
+
+  // Reset height for `textarea`s
+  textarea& {
+    height: auto;
+  }
+}
+
+
+// Search inputs in iOS
+//
+// This overrides the extra rounded corners on search inputs in iOS so that our
+// `.form-control` class can properly style them. Note that this cannot simply
+// be added to `.form-control` as it's not specific enough. For details, see
+// https://github.com/twbs/bootstrap/issues/11586.
+
+input[type="search"] {
+  -webkit-appearance: none;
+}
+
+
+// Special styles for iOS temporal inputs
+//
+// In Mobile Safari, setting `display: block` on temporal inputs causes the
+// text within the input to become vertically misaligned. As a workaround, we
+// set a pixel line-height that matches the given height of the input, but only
+// for Safari. See https://bugs.webkit.org/show_bug.cgi?id=139848
+//
+// Note that as of 9.3, iOS doesn't support `week`.
+
+@media screen and (-webkit-min-device-pixel-ratio: 0) {
+  input[type="date"],
+  input[type="time"],
+  input[type="datetime-local"],
+  input[type="month"] {
+    &.form-control {
+      line-height: @input-height-base;
+    }
+
+    &.input-sm,
+    .input-group-sm & {
+      line-height: @input-height-small;
+    }
+
+    &.input-lg,
+    .input-group-lg & {
+      line-height: @input-height-large;
+    }
+  }
+}
+
+
+// Form groups
+//
+// Designed to help with the organization and spacing of vertical forms. For
+// horizontal forms, use the predefined grid classes.
+
+.form-group {
+  margin-bottom: @form-group-margin-bottom;
+}
+
+
+// Checkboxes and radios
+//
+// Indent the labels to position radios/checkboxes as hanging controls.
+
+.radio,
+.checkbox {
+  position: relative;
+  display: block;
+  margin-top: 10px;
+  margin-bottom: 10px;
+
+  label {
+    min-height: @line-height-computed; // Ensure the input doesn't jump when there is no text
+    padding-left: 20px;
+    margin-bottom: 0;
+    font-weight: normal;
+    cursor: pointer;
+  }
+}
+.radio input[type="radio"],
+.radio-inline input[type="radio"],
+.checkbox input[type="checkbox"],
+.checkbox-inline input[type="checkbox"] {
+  position: absolute;
+  margin-left: -20px;
+  margin-top: 4px \9;
+}
+
+.radio + .radio,
+.checkbox + .checkbox {
+  margin-top: -5px; // Move up sibling radios or checkboxes for tighter spacing
+}
+
+// Radios and checkboxes on same line
+.radio-inline,
+.checkbox-inline {
+  position: relative;
+  display: inline-block;
+  padding-left: 20px;
+  margin-bottom: 0;
+  vertical-align: middle;
+  font-weight: normal;
+  cursor: pointer;
+}
+.radio-inline + .radio-inline,
+.checkbox-inline + .checkbox-inline {
+  margin-top: 0;
+  margin-left: 10px; // space out consecutive inline controls
+}
+
+// Apply same disabled cursor tweak as for inputs
+// Some special care is needed because <label>s don't inherit their parent's `cursor`.
+//
+// Note: Neither radios nor checkboxes can be readonly.
+input[type="radio"],
+input[type="checkbox"] {
+  &[disabled],
+  &.disabled,
+  fieldset[disabled] & {
+    cursor: @cursor-disabled;
+  }
+}
+// These classes are used directly on <label>s
+.radio-inline,
+.checkbox-inline {
+  &.disabled,
+  fieldset[disabled] & {
+    cursor: @cursor-disabled;
+  }
+}
+// These classes are used on elements with <label> descendants
+.radio,
+.checkbox {
+  &.disabled,
+  fieldset[disabled] & {
+    label {
+      cursor: @cursor-disabled;
+    }
+  }
+}
+
+
+// Static form control text
+//
+// Apply class to a `p` element to make any string of text align with labels in
+// a horizontal form layout.
+
+.form-control-static {
+  // Size it appropriately next to real form controls
+  padding-top: (@padding-base-vertical + 1);
+  padding-bottom: (@padding-base-vertical + 1);
+  // Remove default margin from `p`
+  margin-bottom: 0;
+  min-height: (@line-height-computed + @font-size-base);
+
+  &.input-lg,
+  &.input-sm {
+    padding-left: 0;
+    padding-right: 0;
+  }
+}
+
+
+// Form control sizing
+//
+// Build on `.form-control` with modifier classes to decrease or increase the
+// height and font-size of form controls.
+//
+// The `.form-group-* form-control` variations are sadly duplicated to avoid the
+// issue documented in https://github.com/twbs/bootstrap/issues/15074.
+
+.input-sm {
+  .input-size(@input-height-small; @padding-small-vertical; @padding-small-horizontal; @font-size-small; @line-height-small; @input-border-radius-small);
+}
+.form-group-sm {
+  .form-control {
+    height: @input-height-small;
+    padding: @padding-small-vertical @padding-small-horizontal;
+    font-size: @font-size-small;
+    line-height: @line-height-small;
+    border-radius: @input-border-radius-small;
+  }
+  select.form-control {
+    height: @input-height-small;
+    line-height: @input-height-small;
+  }
+  textarea.form-control,
+  select[multiple].form-control {
+    height: auto;
+  }
+  .form-control-static {
+    height: @input-height-small;
+    min-height: (@line-height-computed + @font-size-small);
+    padding: (@padding-small-vertical + 1) @padding-small-horizontal;
+    font-size: @font-size-small;
+    line-height: @line-height-small;
+  }
+}
+
+.input-lg {
+  .input-size(@input-height-large; @padding-large-vertical; @padding-large-horizontal; @font-size-large; @line-height-large; @input-border-radius-large);
+}
+.form-group-lg {
+  .form-control {
+    height: @input-height-large;
+    padding: @padding-large-vertical @padding-large-horizontal;
+    font-size: @font-size-large;
+    line-height: @line-height-large;
+    border-radius: @input-border-radius-large;
+  }
+  select.form-control {
+    height: @input-height-large;
+    line-height: @input-height-large;
+  }
+  textarea.form-control,
+  select[multiple].form-control {
+    height: auto;
+  }
+  .form-control-static {
+    height: @input-height-large;
+    min-height: (@line-height-computed + @font-size-large);
+    padding: (@padding-large-vertical + 1) @padding-large-horizontal;
+    font-size: @font-size-large;
+    line-height: @line-height-large;
+  }
+}
+
+
+// Form control feedback states
+//
+// Apply contextual and semantic states to individual form controls.
+
+.has-feedback {
+  // Enable absolute positioning
+  position: relative;
+
+  // Ensure icons don't overlap text
+  .form-control {
+    padding-right: (@input-height-base * 1.25);
+  }
+}
+// Feedback icon (requires .glyphicon classes)
+.form-control-feedback {
+  position: absolute;
+  top: 0;
+  right: 0;
+  z-index: 2; // Ensure icon is above input groups
+  display: block;
+  width: @input-height-base;
+  height: @input-height-base;
+  line-height: @input-height-base;
+  text-align: center;
+  pointer-events: none;
+}
+.input-lg + .form-control-feedback,
+.input-group-lg + .form-control-feedback,
+.form-group-lg .form-control + .form-control-feedback {
+  width: @input-height-large;
+  height: @input-height-large;
+  line-height: @input-height-large;
+}
+.input-sm + .form-control-feedback,
+.input-group-sm + .form-control-feedback,
+.form-group-sm .form-control + .form-control-feedback {
+  width: @input-height-small;
+  height: @input-height-small;
+  line-height: @input-height-small;
+}
+
+// Feedback states
+.has-success {
+  .form-control-validation(@state-success-text; @state-success-text; @state-success-bg);
+}
+.has-warning {
+  .form-control-validation(@state-warning-text; @state-warning-text; @state-warning-bg);
+}
+.has-error {
+  .form-control-validation(@state-danger-text; @state-danger-text; @state-danger-bg);
+}
+
+// Reposition feedback icon if input has visible label above
+.has-feedback label {
+
+  & ~ .form-control-feedback {
+    top: (@line-height-computed + 5); // Height of the `label` and its margin
+  }
+  &.sr-only ~ .form-control-feedback {
+    top: 0;
+  }
+}
+
+
+// Help text
+//
+// Apply to any element you wish to create light text for placement immediately
+// below a form control. Use for general help, formatting, or instructional text.
+
+.help-block {
+  display: block; // account for any element using help-block
+  margin-top: 5px;
+  margin-bottom: 10px;
+  color: lighten(@text-color, 25%); // lighten the text some for contrast
+}
+
+
+// Inline forms
+//
+// Make forms appear inline(-block) by adding the `.form-inline` class. Inline
+// forms begin stacked on extra small (mobile) devices and then go inline when
+// viewports reach <768px.
+//
+// Requires wrapping inputs and labels with `.form-group` for proper display of
+// default HTML form controls and our custom form controls (e.g., input groups).
+//
+// Heads up! This is mixin-ed into `.navbar-form` in navbars.less.
+
+.form-inline {
+
+  // Kick in the inline
+  @media (min-width: @screen-sm-min) {
+    // Inline-block all the things for "inline"
+    .form-group {
+      display: inline-block;
+      margin-bottom: 0;
+      vertical-align: middle;
+    }
+
+    // In navbar-form, allow folks to *not* use `.form-group`
+    .form-control {
+      display: inline-block;
+      width: auto; // Prevent labels from stacking above inputs in `.form-group`
+      vertical-align: middle;
+    }
+
+    // Make static controls behave like regular ones
+    .form-control-static {
+      display: inline-block;
+    }
+
+    .input-group {
+      display: inline-table;
+      vertical-align: middle;
+
+      .input-group-addon,
+      .input-group-btn,
+      .form-control {
+        width: auto;
+      }
+    }
+
+    // Input groups need that 100% width though
+    .input-group > .form-control {
+      width: 100%;
+    }
+
+    .control-label {
+      margin-bottom: 0;
+      vertical-align: middle;
+    }
+
+    // Remove default margin on radios/checkboxes that were used for stacking, and
+    // then undo the floating of radios and checkboxes to match.
+    .radio,
+    .checkbox {
+      display: inline-block;
+      margin-top: 0;
+      margin-bottom: 0;
+      vertical-align: middle;
+
+      label {
+        padding-left: 0;
+      }
+    }
+    .radio input[type="radio"],
+    .checkbox input[type="checkbox"] {
+      position: relative;
+      margin-left: 0;
+    }
+
+    // Re-override the feedback icon.
+    .has-feedback .form-control-feedback {
+      top: 0;
+    }
+  }
+}
+
+
+// Horizontal forms
+//
+// Horizontal forms are built on grid classes and allow you to create forms with
+// labels on the left and inputs on the right.
+
+.form-horizontal {
+
+  // Consistent vertical alignment of radios and checkboxes
+  //
+  // Labels also get some reset styles, but that is scoped to a media query below.
+  .radio,
+  .checkbox,
+  .radio-inline,
+  .checkbox-inline {
+    margin-top: 0;
+    margin-bottom: 0;
+    padding-top: (@padding-base-vertical + 1); // Default padding plus a border
+  }
+  // Account for padding we're adding to ensure the alignment and of help text
+  // and other content below items
+  .radio,
+  .checkbox {
+    min-height: (@line-height-computed + (@padding-base-vertical + 1));
+  }
+
+  // Make form groups behave like rows
+  .form-group {
+    .make-row();
+  }
+
+  // Reset spacing and right align labels, but scope to media queries so that
+  // labels on narrow viewports stack the same as a default form example.
+  @media (min-width: @screen-sm-min) {
+    .control-label {
+      text-align: right;
+      margin-bottom: 0;
+      padding-top: (@padding-base-vertical + 1); // Default padding plus a border
+    }
+  }
+
+  // Validation states
+  //
+  // Reposition the icon because it's now within a grid column and columns have
+  // `position: relative;` on them. Also accounts for the grid gutter padding.
+  .has-feedback .form-control-feedback {
+    right: floor((@grid-gutter-width / 2));
+  }
+
+  // Form group sizes
+  //
+  // Quick utility class for applying `.input-lg` and `.input-sm` styles to the
+  // inputs and labels within a `.form-group`.
+  .form-group-lg {
+    @media (min-width: @screen-sm-min) {
+      .control-label {
+        padding-top: (@padding-large-vertical + 1);
+        font-size: @font-size-large;
+      }
+    }
+  }
+  .form-group-sm {
+    @media (min-width: @screen-sm-min) {
+      .control-label {
+        padding-top: (@padding-small-vertical + 1);
+        font-size: @font-size-small;
+      }
+    }
+  }
+}

web/cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/less/glyphicons.less

@@ -0,0 +1,305 @@
+//
+// Glyphicons for Bootstrap
+//
+// Since icons are fonts, they can be placed anywhere text is placed and are
+// thus automatically sized to match the surrounding child. To use, create an
+// inline element with the appropriate classes, like so:
+//
+// <a href="#"><span class="glyphicon glyphicon-star"></span> Star</a>
+
+// Import the fonts
+@font-face {
+  font-family: 'Glyphicons Halflings';
+  src: url('@{icon-font-path}@{icon-font-name}.eot');
+  src: url('@{icon-font-path}@{icon-font-name}.eot?#iefix') format('embedded-opentype'),
+       url('@{icon-font-path}@{icon-font-name}.woff2') format('woff2'),
+       url('@{icon-font-path}@{icon-font-name}.woff') format('woff'),
+       url('@{icon-font-path}@{icon-font-name}.ttf') format('truetype'),
+       url('@{icon-font-path}@{icon-font-name}.svg#@{icon-font-svg-id}') format('svg');
+}
+
+// Catchall baseclass
+.glyphicon {
+  position: relative;
+  top: 1px;
+  display: inline-block;
+  font-family: 'Glyphicons Halflings';
+  font-style: normal;
+  font-weight: normal;
+  line-height: 1;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+}
+
+// Individual icons
+.glyphicon-asterisk               { &:before { content: "\002a"; } }
+.glyphicon-plus                   { &:before { content: "\002b"; } }
+.glyphicon-euro,
+.glyphicon-eur                    { &:before { content: "\20ac"; } }
+.glyphicon-minus                  { &:before { content: "\2212"; } }
+.glyphicon-cloud                  { &:before { content: "\2601"; } }
+.glyphicon-envelope               { &:before { content: "\2709"; } }
+.glyphicon-pencil                 { &:before { content: "\270f"; } }
+.glyphicon-glass                  { &:before { content: "\e001"; } }
+.glyphicon-music                  { &:before { content: "\e002"; } }
+.glyphicon-search                 { &:before { content: "\e003"; } }
+.glyphicon-heart                  { &:before { content: "\e005"; } }
+.glyphicon-star                   { &:before { content: "\e006"; } }
+.glyphicon-star-empty             { &:before { content: "\e007"; } }
+.glyphicon-user                   { &:before { content: "\e008"; } }
+.glyphicon-film                   { &:before { content: "\e009"; } }
+.glyphicon-th-large               { &:before { content: "\e010"; } }
+.glyphicon-th                     { &:before { content: "\e011"; } }
+.glyphicon-th-list                { &:before { content: "\e012"; } }
+.glyphicon-ok                     { &:before { content: "\e013"; } }
+.glyphicon-remove                 { &:before { content: "\e014"; } }
+.glyphicon-zoom-in                { &:before { content: "\e015"; } }
+.glyphicon-zoom-out               { &:before { content: "\e016"; } }
+.glyphicon-off                    { &:before { content: "\e017"; } }
+.glyphicon-signal                 { &:before { content: "\e018"; } }
+.glyphicon-cog                    { &:before { content: "\e019"; } }
+.glyphicon-trash                  { &:before { content: "\e020"; } }
+.glyphicon-home                   { &:before { content: "\e021"; } }
+.glyphicon-file                   { &:before { content: "\e022"; } }
+.glyphicon-time                   { &:before { content: "\e023"; } }
+.glyphicon-road                   { &:before { content: "\e024"; } }
+.glyphicon-download-alt           { &:before { content: "\e025"; } }
+.glyphicon-download               { &:before { content: "\e026"; } }
+.glyphicon-upload                 { &:before { content: "\e027"; } }
+.glyphicon-inbox                  { &:before { content: "\e028"; } }
+.glyphicon-play-circle            { &:before { content: "\e029"; } }
+.glyphicon-repeat                 { &:before { content: "\e030"; } }
+.glyphicon-refresh                { &:before { content: "\e031"; } }
+.glyphicon-list-alt               { &:before { content: "\e032"; } }
+.glyphicon-lock                   { &:before { content: "\e033"; } }
+.glyphicon-flag                   { &:before { content: "\e034"; } }
+.glyphicon-headphones             { &:before { content: "\e035"; } }
+.glyphicon-volume-off             { &:before { content: "\e036"; } }
+.glyphicon-volume-down            { &:before { content: "\e037"; } }
+.glyphicon-volume-up              { &:before { content: "\e038"; } }
+.glyphicon-qrcode                 { &:before { content: "\e039"; } }
+.glyphicon-barcode                { &:before { content: "\e040"; } }
+.glyphicon-tag                    { &:before { content: "\e041"; } }
+.glyphicon-tags                   { &:before { content: "\e042"; } }
+.glyphicon-book                   { &:before { content: "\e043"; } }
+.glyphicon-bookmark               { &:before { content: "\e044"; } }
+.glyphicon-print                  { &:before { content: "\e045"; } }
+.glyphicon-camera                 { &:before { content: "\e046"; } }
+.glyphicon-font                   { &:before { content: "\e047"; } }
+.glyphicon-bold                   { &:before { content: "\e048"; } }
+.glyphicon-italic                 { &:before { content: "\e049"; } }
+.glyphicon-text-height            { &:before { content: "\e050"; } }
+.glyphicon-text-width             { &:before { content: "\e051"; } }
+.glyphicon-align-left             { &:before { content: "\e052"; } }
+.glyphicon-align-center           { &:before { content: "\e053"; } }
+.glyphicon-align-right            { &:before { content: "\e054"; } }
+.glyphicon-align-justify          { &:before { content: "\e055"; } }
+.glyphicon-list                   { &:before { content: "\e056"; } }
+.glyphicon-indent-left            { &:before { content: "\e057"; } }
+.glyphicon-indent-right           { &:before { content: "\e058"; } }
+.glyphicon-facetime-video         { &:before { content: "\e059"; } }
+.glyphicon-picture                { &:before { content: "\e060"; } }
+.glyphicon-map-marker             { &:before { content: "\e062"; } }
+.glyphicon-adjust                 { &:before { content: "\e063"; } }
+.glyphicon-tint                   { &:before { content: "\e064"; } }
+.glyphicon-edit                   { &:before { content: "\e065"; } }
+.glyphicon-share                  { &:before { content: "\e066"; } }
+.glyphicon-check                  { &:before { content: "\e067"; } }
+.glyphicon-move                   { &:before { content: "\e068"; } }
+.glyphicon-step-backward          { &:before { content: "\e069"; } }
+.glyphicon-fast-backward          { &:before { content: "\e070"; } }
+.glyphicon-backward               { &:before { content: "\e071"; } }
+.glyphicon-play                   { &:before { content: "\e072"; } }
+.glyphicon-pause                  { &:before { content: "\e073"; } }
+.glyphicon-stop                   { &:before { content: "\e074"; } }
+.glyphicon-forward                { &:before { content: "\e075"; } }
+.glyphicon-fast-forward           { &:before { content: "\e076"; } }
+.glyphicon-step-forward           { &:before { content: "\e077"; } }
+.glyphicon-eject                  { &:before { content: "\e078"; } }
+.glyphicon-chevron-left           { &:before { content: "\e079"; } }
+.glyphicon-chevron-right          { &:before { content: "\e080"; } }
+.glyphicon-plus-sign              { &:before { content: "\e081"; } }
+.glyphicon-minus-sign             { &:before { content: "\e082"; } }
+.glyphicon-remove-sign            { &:before { content: "\e083"; } }
+.glyphicon-ok-sign                { &:before { content: "\e084"; } }
+.glyphicon-question-sign          { &:before { content: "\e085"; } }
+.glyphicon-info-sign              { &:before { content: "\e086"; } }
+.glyphicon-screenshot             { &:before { content: "\e087"; } }
+.glyphicon-remove-circle          { &:before { content: "\e088"; } }
+.glyphicon-ok-circle              { &:before { content: "\e089"; } }
+.glyphicon-ban-circle             { &:before { content: "\e090"; } }
+.glyphicon-arrow-left             { &:before { content: "\e091"; } }
+.glyphicon-arrow-right            { &:before { content: "\e092"; } }
+.glyphicon-arrow-up               { &:before { content: "\e093"; } }
+.glyphicon-arrow-down             { &:before { content: "\e094"; } }
+.glyphicon-share-alt              { &:before { content: "\e095"; } }
+.glyphicon-resize-full            { &:before { content: "\e096"; } }
+.glyphicon-resize-small           { &:before { content: "\e097"; } }
+.glyphicon-exclamation-sign       { &:before { content: "\e101"; } }
+.glyphicon-gift                   { &:before { content: "\e102"; } }
+.glyphicon-leaf                   { &:before { content: "\e103"; } }
+.glyphicon-fire                   { &:before { content: "\e104"; } }
+.glyphicon-eye-open               { &:before { content: "\e105"; } }
+.glyphicon-eye-close              { &:before { content: "\e106"; } }
+.glyphicon-warning-sign           { &:before { content: "\e107"; } }
+.glyphicon-plane                  { &:before { content: "\e108"; } }
+.glyphicon-calendar               { &:before { content: "\e109"; } }
+.glyphicon-random                 { &:before { content: "\e110"; } }
+.glyphicon-comment                { &:before { content: "\e111"; } }
+.glyphicon-magnet                 { &:before { content: "\e112"; } }
+.glyphicon-chevron-up             { &:before { content: "\e113"; } }
+.glyphicon-chevron-down           { &:before { content: "\e114"; } }
+.glyphicon-retweet                { &:before { content: "\e115"; } }
+.glyphicon-shopping-cart          { &:before { content: "\e116"; } }
+.glyphicon-folder-close           { &:before { content: "\e117"; } }
+.glyphicon-folder-open            { &:before { content: "\e118"; } }
+.glyphicon-resize-vertical        { &:before { content: "\e119"; } }
+.glyphicon-resize-horizontal      { &:before { content: "\e120"; } }
+.glyphicon-hdd                    { &:before { content: "\e121"; } }
+.glyphicon-bullhorn               { &:before { content: "\e122"; } }
+.glyphicon-bell                   { &:before { content: "\e123"; } }
+.glyphicon-certificate            { &:before { content: "\e124"; } }
+.glyphicon-thumbs-up              { &:before { content: "\e125"; } }
+.glyphicon-thumbs-down            { &:before { content: "\e126"; } }
+.glyphicon-hand-right             { &:before { content: "\e127"; } }
+.glyphicon-hand-left              { &:before { content: "\e128"; } }
+.glyphicon-hand-up                { &:before { content: "\e129"; } }
+.glyphicon-hand-down              { &:before { content: "\e130"; } }
+.glyphicon-circle-arrow-right     { &:before { content: "\e131"; } }
+.glyphicon-circle-arrow-left      { &:before { content: "\e132"; } }
+.glyphicon-circle-arrow-up        { &:before { content: "\e133"; } }
+.glyphicon-circle-arrow-down      { &:before { content: "\e134"; } }
+.glyphicon-globe                  { &:before { content: "\e135"; } }
+.glyphicon-wrench                 { &:before { content: "\e136"; } }
+.glyphicon-tasks                  { &:before { content: "\e137"; } }
+.glyphicon-filter                 { &:before { content: "\e138"; } }
+.glyphicon-briefcase              { &:before { content: "\e139"; } }
+.glyphicon-fullscreen             { &:before { content: "\e140"; } }
+.glyphicon-dashboard              { &:before { content: "\e141"; } }
+.glyphicon-paperclip              { &:before { content: "\e142"; } }
+.glyphicon-heart-empty            { &:before { content: "\e143"; } }
+.glyphicon-link                   { &:before { content: "\e144"; } }
+.glyphicon-phone                  { &:before { content: "\e145"; } }
+.glyphicon-pushpin                { &:before { content: "\e146"; } }
+.glyphicon-usd                    { &:before { content: "\e148"; } }
+.glyphicon-gbp                    { &:before { content: "\e149"; } }
+.glyphicon-sort                   { &:before { content: "\e150"; } }
+.glyphicon-sort-by-alphabet       { &:before { content: "\e151"; } }
+.glyphicon-sort-by-alphabet-alt   { &:before { content: "\e152"; } }
+.glyphicon-sort-by-order          { &:before { content: "\e153"; } }
+.glyphicon-sort-by-order-alt      { &:before { content: "\e154"; } }
+.glyphicon-sort-by-attributes     { &:before { content: "\e155"; } }
+.glyphicon-sort-by-attributes-alt { &:before { content: "\e156"; } }
+.glyphicon-unchecked              { &:before { content: "\e157"; } }
+.glyphicon-expand                 { &:before { content: "\e158"; } }
+.glyphicon-collapse-down          { &:before { content: "\e159"; } }
+.glyphicon-collapse-up            { &:before { content: "\e160"; } }
+.glyphicon-log-in                 { &:before { content: "\e161"; } }
+.glyphicon-flash                  { &:before { content: "\e162"; } }
+.glyphicon-log-out                { &:before { content: "\e163"; } }
+.glyphicon-new-window             { &:before { content: "\e164"; } }
+.glyphicon-record                 { &:before { content: "\e165"; } }
+.glyphicon-save                   { &:before { content: "\e166"; } }
+.glyphicon-open                   { &:before { content: "\e167"; } }
+.glyphicon-saved                  { &:before { content: "\e168"; } }
+.glyphicon-import                 { &:before { content: "\e169"; } }
+.glyphicon-export                 { &:before { content: "\e170"; } }
+.glyphicon-send                   { &:before { content: "\e171"; } }
+.glyphicon-floppy-disk            { &:before { content: "\e172"; } }
+.glyphicon-floppy-saved           { &:before { content: "\e173"; } }
+.glyphicon-floppy-remove          { &:before { content: "\e174"; } }
+.glyphicon-floppy-save            { &:before { content: "\e175"; } }
+.glyphicon-floppy-open            { &:before { content: "\e176"; } }
+.glyphicon-credit-card            { &:before { content: "\e177"; } }
+.glyphicon-transfer               { &:before { content: "\e178"; } }
+.glyphicon-cutlery                { &:before { content: "\e179"; } }
+.glyphicon-header                 { &:before { content: "\e180"; } }
+.glyphicon-compressed             { &:before { content: "\e181"; } }
+.glyphicon-earphone               { &:before { content: "\e182"; } }
+.glyphicon-phone-alt              { &:before { content: "\e183"; } }
+.glyphicon-tower                  { &:before { content: "\e184"; } }
+.glyphicon-stats                  { &:before { content: "\e185"; } }
+.glyphicon-sd-video               { &:before { content: "\e186"; } }
+.glyphicon-hd-video               { &:before { content: "\e187"; } }
+.glyphicon-subtitles              { &:before { content: "\e188"; } }
+.glyphicon-sound-stereo           { &:before { content: "\e189"; } }
+.glyphicon-sound-dolby            { &:before { content: "\e190"; } }
+.glyphicon-sound-5-1              { &:before { content: "\e191"; } }
+.glyphicon-sound-6-1              { &:before { content: "\e192"; } }
+.glyphicon-sound-7-1              { &:before { content: "\e193"; } }
+.glyphicon-copyright-mark         { &:before { content: "\e194"; } }
+.glyphicon-registration-mark      { &:before { content: "\e195"; } }
+.glyphicon-cloud-download         { &:before { content: "\e197"; } }
+.glyphicon-cloud-upload           { &:before { content: "\e198"; } }
+.glyphicon-tree-conifer           { &:before { content: "\e199"; } }
+.glyphicon-tree-deciduous         { &:before { content: "\e200"; } }
+.glyphicon-cd                     { &:before { content: "\e201"; } }
+.glyphicon-save-file              { &:before { content: "\e202"; } }
+.glyphicon-open-file              { &:before { content: "\e203"; } }
+.glyphicon-level-up               { &:before { content: "\e204"; } }
+.glyphicon-copy                   { &:before { content: "\e205"; } }
+.glyphicon-paste                  { &:before { content: "\e206"; } }
+// The following 2 Glyphicons are omitted for the time being because
+// they currently use Unicode codepoints that are outside the
+// Basic Multilingual Plane (BMP). Older buggy versions of WebKit can't handle
+// non-BMP codepoints in CSS string escapes, and thus can't display these two icons.
+// Notably, the bug affects some older versions of the Android Browser.
+// More info: https://github.com/twbs/bootstrap/issues/10106
+// .glyphicon-door                   { &:before { content: "\1f6aa"; } }
+// .glyphicon-key                    { &:before { content: "\1f511"; } }
+.glyphicon-alert                  { &:before { content: "\e209"; } }
+.glyphicon-equalizer              { &:before { content: "\e210"; } }
+.glyphicon-king                   { &:before { content: "\e211"; } }
+.glyphicon-queen                  { &:before { content: "\e212"; } }
+.glyphicon-pawn                   { &:before { content: "\e213"; } }
+.glyphicon-bishop                 { &:before { content: "\e214"; } }
+.glyphicon-knight                 { &:before { content: "\e215"; } }
+.glyphicon-baby-formula           { &:before { content: "\e216"; } }
+.glyphicon-tent                   { &:before { content: "\26fa"; } }
+.glyphicon-blackboard             { &:before { content: "\e218"; } }
+.glyphicon-bed                    { &:before { content: "\e219"; } }
+.glyphicon-apple                  { &:before { content: "\f8ff"; } }
+.glyphicon-erase                  { &:before { content: "\e221"; } }
+.glyphicon-hourglass              { &:before { content: "\231b"; } }
+.glyphicon-lamp                   { &:before { content: "\e223"; } }
+.glyphicon-duplicate              { &:before { content: "\e224"; } }
+.glyphicon-piggy-bank             { &:before { content: "\e225"; } }
+.glyphicon-scissors               { &:before { content: "\e226"; } }
+.glyphicon-bitcoin                { &:before { content: "\e227"; } }
+.glyphicon-btc                    { &:before { content: "\e227"; } }
+.glyphicon-xbt                    { &:before { content: "\e227"; } }
+.glyphicon-yen                    { &:before { content: "\00a5"; } }
+.glyphicon-jpy                    { &:before { content: "\00a5"; } }
+.glyphicon-ruble                  { &:before { content: "\20bd"; } }
+.glyphicon-rub                    { &:before { content: "\20bd"; } }
+.glyphicon-scale                  { &:before { content: "\e230"; } }
+.glyphicon-ice-lolly              { &:before { content: "\e231"; } }
+.glyphicon-ice-lolly-tasted       { &:before { content: "\e232"; } }
+.glyphicon-education              { &:before { content: "\e233"; } }
+.glyphicon-option-horizontal      { &:before { content: "\e234"; } }
+.glyphicon-option-vertical        { &:before { content: "\e235"; } }
+.glyphicon-menu-hamburger         { &:before { content: "\e236"; } }
+.glyphicon-modal-window           { &:before { content: "\e237"; } }
+.glyphicon-oil                    { &:before { content: "\e238"; } }
+.glyphicon-grain                  { &:before { content: "\e239"; } }
+.glyphicon-sunglasses             { &:before { content: "\e240"; } }
+.glyphicon-text-size              { &:before { content: "\e241"; } }
+.glyphicon-text-color             { &:before { content: "\e242"; } }
+.glyphicon-text-background        { &:before { content: "\e243"; } }
+.glyphicon-object-align-top       { &:before { content: "\e244"; } }
+.glyphicon-object-align-bottom    { &:before { content: "\e245"; } }
+.glyphicon-object-align-horizontal{ &:before { content: "\e246"; } }
+.glyphicon-object-align-left      { &:before { content: "\e247"; } }
+.glyphicon-object-align-vertical  { &:before { content: "\e248"; } }
+.glyphicon-object-align-right     { &:before { content: "\e249"; } }
+.glyphicon-triangle-right         { &:before { content: "\e250"; } }
+.glyphicon-triangle-left          { &:before { content: "\e251"; } }
+.glyphicon-triangle-bottom        { &:before { content: "\e252"; } }
+.glyphicon-triangle-top           { &:before { content: "\e253"; } }
+.glyphicon-console                { &:before { content: "\e254"; } }
+.glyphicon-superscript            { &:before { content: "\e255"; } }
+.glyphicon-subscript              { &:before { content: "\e256"; } }
+.glyphicon-menu-left              { &:before { content: "\e257"; } }
+.glyphicon-menu-right             { &:before { content: "\e258"; } }
+.glyphicon-menu-down              { &:before { content: "\e259"; } }
+.glyphicon-menu-up                { &:before { content: "\e260"; } }

web/cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/less/grid.less

@@ -0,0 +1,84 @@
+//
+// Grid system
+// --------------------------------------------------
+
+
+// Container widths
+//
+// Set the container width, and override it for fixed navbars in media queries.
+
+.container {
+  .container-fixed();
+
+  @media (min-width: @screen-sm-min) {
+    width: @container-sm;
+  }
+  @media (min-width: @screen-md-min) {
+    width: @container-md;
+  }
+  @media (min-width: @screen-lg-min) {
+    width: @container-lg;
+  }
+}
+
+
+// Fluid container
+//
+// Utilizes the mixin meant for fixed width containers, but without any defined
+// width for fluid, full width layouts.
+
+.container-fluid {
+  .container-fixed();
+}
+
+
+// Row
+//
+// Rows contain and clear the floats of your columns.
+
+.row {
+  .make-row();
+}
+
+
+// Columns
+//
+// Common styles for small and large grid columns
+
+.make-grid-columns();
+
+
+// Extra small grid
+//
+// Columns, offsets, pushes, and pulls for extra small devices like
+// smartphones.
+
+.make-grid(xs);
+
+
+// Small grid
+//
+// Columns, offsets, pushes, and pulls for the small device range, from phones
+// to tablets.
+
+@media (min-width: @screen-sm-min) {
+  .make-grid(sm);
+}
+
+
+// Medium grid
+//
+// Columns, offsets, pushes, and pulls for the desktop device range.
+
+@media (min-width: @screen-md-min) {
+  .make-grid(md);
+}
+
+
+// Large grid
+//
+// Columns, offsets, pushes, and pulls for the large desktop device range.
+
+@media (min-width: @screen-lg-min) {
+  .make-grid(lg);
+}

web/cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/less/input-groups.less

@@ -0,0 +1,171 @@
+//
+// Input groups
+// --------------------------------------------------
+
+// Base styles
+// -------------------------
+.input-group {
+  position: relative; // For dropdowns
+  display: table;
+  border-collapse: separate; // prevent input groups from inheriting border styles from table cells when placed within a table
+
+  // Undo padding and float of grid classes
+  &[class*="col-"] {
+    float: none;
+    padding-left: 0;
+    padding-right: 0;
+  }
+
+  .form-control {
+    // Ensure that the input is always above the *appended* addon button for
+    // proper border colors.
+    position: relative;
+    z-index: 2;
+
+    // IE9 fubars the placeholder attribute in text inputs and the arrows on
+    // select elements in input groups. To fix it, we float the input. Details:
+    // https://github.com/twbs/bootstrap/issues/11561#issuecomment-28936855
+    float: left;
+
+    width: 100%;
+    margin-bottom: 0;
+
+    &:focus {
+      z-index: 3;
+    }
+  }
+}
+
+// Sizing options
+//
+// Remix the default form control sizing classes into new ones for easier
+// manipulation.
+
+.input-group-lg > .form-control,
+.input-group-lg > .input-group-addon,
+.input-group-lg > .input-group-btn > .btn {
+  .input-lg();
+}
+.input-group-sm > .form-control,
+.input-group-sm > .input-group-addon,
+.input-group-sm > .input-group-btn > .btn {
+  .input-sm();
+}
+
+
+// Display as table-cell
+// -------------------------
+.input-group-addon,
+.input-group-btn,
+.input-group .form-control {
+  display: table-cell;
+
+  &:not(:first-child):not(:last-child) {
+    border-radius: 0;
+  }
+}
+// Addon and addon wrapper for buttons
+.input-group-addon,
+.input-group-btn {
+  width: 1%;
+  white-space: nowrap;
+  vertical-align: middle; // Match the inputs
+}
+
+// Text input groups
+// -------------------------
+.input-group-addon {
+  padding: @padding-base-vertical @padding-base-horizontal;
+  font-size: @font-size-base;
+  font-weight: normal;
+  line-height: 1;
+  color: @input-color;
+  text-align: center;
+  background-color: @input-group-addon-bg;
+  border: 1px solid @input-group-addon-border-color;
+  border-radius: @input-border-radius;
+
+  // Sizing
+  &.input-sm {
+    padding: @padding-small-vertical @padding-small-horizontal;
+    font-size: @font-size-small;
+    border-radius: @input-border-radius-small;
+  }
+  &.input-lg {
+    padding: @padding-large-vertical @padding-large-horizontal;
+    font-size: @font-size-large;
+    border-radius: @input-border-radius-large;
+  }
+
+  // Nuke default margins from checkboxes and radios to vertically center within.
+  input[type="radio"],
+  input[type="checkbox"] {
+    margin-top: 0;
+  }
+}
+
+// Reset rounded corners
+.input-group .form-control:first-child,
+.input-group-addon:first-child,
+.input-group-btn:first-child > .btn,
+.input-group-btn:first-child > .btn-group > .btn,
+.input-group-btn:first-child > .dropdown-toggle,
+.input-group-btn:last-child > .btn:not(:last-child):not(.dropdown-toggle),
+.input-group-btn:last-child > .btn-group:not(:last-child) > .btn {
+  .border-right-radius(0);
+}
+.input-group-addon:first-child {
+  border-right: 0;
+}
+.input-group .form-control:last-child,
+.input-group-addon:last-child,
+.input-group-btn:last-child > .btn,
+.input-group-btn:last-child > .btn-group > .btn,
+.input-group-btn:last-child > .dropdown-toggle,
+.input-group-btn:first-child > .btn:not(:first-child),
+.input-group-btn:first-child > .btn-group:not(:first-child) > .btn {
+  .border-left-radius(0);
+}
+.input-group-addon:last-child {
+  border-left: 0;
+}
+
+// Button input groups
+// -------------------------
+.input-group-btn {
+  position: relative;
+  // Jankily prevent input button groups from wrapping with `white-space` and
+  // `font-size` in combination with `inline-block` on buttons.
+  font-size: 0;
+  white-space: nowrap;
+
+  // Negative margin for spacing, position for bringing hovered/focused/actived
+  // element above the siblings.
+  > .btn {
+    position: relative;
+    + .btn {
+      margin-left: -1px;
+    }
+    // Bring the "active" button to the front
+    &:hover,
+    &:focus,
+    &:active {
+      z-index: 2;
+    }
+  }
+
+  // Negative margin to only have a 1px border between the two
+  &:first-child {
+    > .btn,
+    > .btn-group {
+      margin-right: -1px;
+    }
+  }
+  &:last-child {
+    > .btn,
+    > .btn-group {
+      z-index: 2;
+      margin-left: -1px;
+    }
+  }
+}

web/cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/less/jumbotron.less

@@ -0,0 +1,54 @@
+//
+// Jumbotron
+// --------------------------------------------------
+
+
+.jumbotron {
+  padding-top:    @jumbotron-padding;
+  padding-bottom: @jumbotron-padding;
+  margin-bottom: @jumbotron-padding;
+  color: @jumbotron-color;
+  background-color: @jumbotron-bg;
+
+  h1,
+  .h1 {
+    color: @jumbotron-heading-color;
+  }
+
+  p {
+    margin-bottom: (@jumbotron-padding / 2);
+    font-size: @jumbotron-font-size;
+    font-weight: 200;
+  }
+
+  > hr {
+    border-top-color: darken(@jumbotron-bg, 10%);
+  }
+
+  .container &,
+  .container-fluid & {
+    border-radius: @border-radius-large; // Only round corners at higher resolutions if contained in a container
+    padding-left:  (@grid-gutter-width / 2);
+    padding-right: (@grid-gutter-width / 2);
+  }
+
+  .container {
+    max-width: 100%;
+  }
+
+  @media screen and (min-width: @screen-sm-min) {
+    padding-top:    (@jumbotron-padding * 1.6);
+    padding-bottom: (@jumbotron-padding * 1.6);
+
+    .container &,
+    .container-fluid & {
+      padding-left:  (@jumbotron-padding * 2);
+      padding-right: (@jumbotron-padding * 2);
+    }
+
+    h1,
+    .h1 {
+      font-size: @jumbotron-heading-font-size;
+    }
+  }
+}

web/cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/less/labels.less

@@ -0,0 +1,64 @@
+//
+// Labels
+// --------------------------------------------------
+
+.label {
+  display: inline;
+  padding: .2em .6em .3em;
+  font-size: 75%;
+  font-weight: bold;
+  line-height: 1;
+  color: @label-color;
+  text-align: center;
+  white-space: nowrap;
+  vertical-align: baseline;
+  border-radius: .25em;
+
+  // Add hover effects, but only for links
+  a& {
+    &:hover,
+    &:focus {
+      color: @label-link-hover-color;
+      text-decoration: none;
+      cursor: pointer;
+    }
+  }
+
+  // Empty labels collapse automatically (not available in IE8)
+  &:empty {
+    display: none;
+  }
+
+  // Quick fix for labels in buttons
+  .btn & {
+    position: relative;
+    top: -1px;
+  }
+}
+
+// Colors
+// Contextual variations (linked labels get darker on :hover)
+
+.label-default {
+  .label-variant(@label-default-bg);
+}
+
+.label-primary {
+  .label-variant(@label-primary-bg);
+}
+
+.label-success {
+  .label-variant(@label-success-bg);
+}
+
+.label-info {
+  .label-variant(@label-info-bg);
+}
+
+.label-warning {
+  .label-variant(@label-warning-bg);
+}
+
+.label-danger {
+  .label-variant(@label-danger-bg);
+}

web/cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/less/list-group.less

@@ -0,0 +1,130 @@
+//
+// List groups
+// --------------------------------------------------
+
+
+// Base class
+//
+// Easily usable on <ul>, <ol>, or <div>.
+
+.list-group {
+  // No need to set list-style: none; since .list-group-item is block level
+  margin-bottom: 20px;
+  padding-left: 0; // reset padding because ul and ol
+}
+
+
+// Individual list items
+//
+// Use on `li`s or `div`s within the `.list-group` parent.
+
+.list-group-item {
+  position: relative;
+  display: block;
+  padding: 10px 15px;
+  // Place the border on the list items and negative margin up for better styling
+  margin-bottom: -1px;
+  background-color: @list-group-bg;
+  border: 1px solid @list-group-border;
+
+  // Round the first and last items
+  &:first-child {
+    .border-top-radius(@list-group-border-radius);
+  }
+  &:last-child {
+    margin-bottom: 0;
+    .border-bottom-radius(@list-group-border-radius);
+  }
+}
+
+
+// Interactive list items
+//
+// Use anchor or button elements instead of `li`s or `div`s to create interactive items.
+// Includes an extra `.active` modifier class for showing selected items.
+
+a.list-group-item,
+button.list-group-item {
+  color: @list-group-link-color;
+
+  .list-group-item-heading {
+    color: @list-group-link-heading-color;
+  }
+
+  // Hover state
+  &:hover,
+  &:focus {
+    text-decoration: none;
+    color: @list-group-link-hover-color;
+    background-color: @list-group-hover-bg;
+  }
+}
+
+button.list-group-item {
+  width: 100%;
+  text-align: left;
+}
+
+.list-group-item {
+  // Disabled state
+  &.disabled,
+  &.disabled:hover,
+  &.disabled:focus {
+    background-color: @list-group-disabled-bg;
+    color: @list-group-disabled-color;
+    cursor: @cursor-disabled;
+
+    // Force color to inherit for custom content
+    .list-group-item-heading {
+      color: inherit;
+    }
+    .list-group-item-text {
+      color: @list-group-disabled-text-color;
+    }
+  }
+
+  // Active class on item itself, not parent
+  &.active,
+  &.active:hover,
+  &.active:focus {
+    z-index: 2; // Place active items above their siblings for proper border styling
+    color: @list-group-active-color;
+    background-color: @list-group-active-bg;
+    border-color: @list-group-active-border;
+
+    // Force color to inherit for custom content
+    .list-group-item-heading,
+    .list-group-item-heading > small,
+    .list-group-item-heading > .small {
+      color: inherit;
+    }
+    .list-group-item-text {
+      color: @list-group-active-text-color;
+    }
+  }
+}
+
+
+// Contextual variants
+//
+// Add modifier classes to change text and background color on individual items.
+// Organizationally, this must come after the `:hover` states.
+
+.list-group-item-variant(success; @state-success-bg; @state-success-text);
+.list-group-item-variant(info; @state-info-bg; @state-info-text);
+.list-group-item-variant(warning; @state-warning-bg; @state-warning-text);
+.list-group-item-variant(danger; @state-danger-bg; @state-danger-text);
+
+
+// Custom content options
+//
+// Extra classes for creating well-formatted content within `.list-group-item`s.
+
+.list-group-item-heading {
+  margin-top: 0;
+  margin-bottom: 5px;
+}
+.list-group-item-text {
+  margin-bottom: 0;
+  line-height: 1.3;
+}

web/cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/less/media.less

@@ -0,0 +1,66 @@
+.media {
+  // Proper spacing between instances of .media
+  margin-top: 15px;
+
+  &:first-child {
+    margin-top: 0;
+  }
+}
+
+.media,
+.media-body {
+  zoom: 1;
+  overflow: hidden;
+}
+
+.media-body {
+  width: 10000px;
+}
+
+.media-object {
+  display: block;
+
+  // Fix collapse in webkit from max-width: 100% and display: table-cell.
+  &.img-thumbnail {
+    max-width: none;
+  }
+}
+
+.media-right,
+.media > .pull-right {
+  padding-left: 10px;
+}
+
+.media-left,
+.media > .pull-left {
+  padding-right: 10px;
+}
+
+.media-left,
+.media-right,
+.media-body {
+  display: table-cell;
+  vertical-align: top;
+}
+
+.media-middle {
+  vertical-align: middle;
+}
+
+.media-bottom {
+  vertical-align: bottom;
+}
+
+// Reset margins on headings for tighter default spacing
+.media-heading {
+  margin-top: 0;
+  margin-bottom: 5px;
+}
+
+// Media list variation
+//
+// Undo default ul/ol styles
+.media-list {
+  padding-left: 0;
+  list-style: none;
+}

web/cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/less/mixins/alerts.less

@@ -0,0 +1,14 @@
+// Alerts
+
+.alert-variant(@background; @border; @text-color) {
+  background-color: @background;
+  border-color: @border;
+  color: @text-color;
+
+  hr {
+    border-top-color: darken(@border, 5%);
+  }
+  .alert-link {
+    color: darken(@text-color, 10%);
+  }
+}

web/cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/less/mixins/background-variant.less

@@ -0,0 +1,9 @@
+// Contextual backgrounds
+
+.bg-variant(@color) {
+  background-color: @color;
+  a&:hover,
+  a&:focus {
+    background-color: darken(@color, 10%);
+  }
+}

web/cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/less/mixins/border-radius.less

@@ -0,0 +1,18 @@
+// Single side border-radius
+
+.border-top-radius(@radius) {
+  border-top-right-radius: @radius;
+   border-top-left-radius: @radius;
+}
+.border-right-radius(@radius) {
+  border-bottom-right-radius: @radius;
+     border-top-right-radius: @radius;
+}
+.border-bottom-radius(@radius) {
+  border-bottom-right-radius: @radius;
+   border-bottom-left-radius: @radius;
+}
+.border-left-radius(@radius) {
+  border-bottom-left-radius: @radius;
+     border-top-left-radius: @radius;
+}

web/cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/less/mixins/buttons.less

@@ -0,0 +1,65 @@
+// Button variants
+//
+// Easily pump out default styles, as well as :hover, :focus, :active,
+// and disabled options for all buttons
+
+.button-variant(@color; @background; @border) {
+  color: @color;
+  background-color: @background;
+  border-color: @border;
+
+  &:focus,
+  &.focus {
+    color: @color;
+    background-color: darken(@background, 10%);
+        border-color: darken(@border, 25%);
+  }
+  &:hover {
+    color: @color;
+    background-color: darken(@background, 10%);
+        border-color: darken(@border, 12%);
+  }
+  &:active,
+  &.active,
+  .open > .dropdown-toggle& {
+    color: @color;
+    background-color: darken(@background, 10%);
+        border-color: darken(@border, 12%);
+
+    &:hover,
+    &:focus,
+    &.focus {
+      color: @color;
+      background-color: darken(@background, 17%);
+          border-color: darken(@border, 25%);
+    }
+  }
+  &:active,
+  &.active,
+  .open > .dropdown-toggle& {
+    background-image: none;
+  }
+  &.disabled,
+  &[disabled],
+  fieldset[disabled] & {
+    &:hover,
+    &:focus,
+    &.focus {
+      background-color: @background;
+          border-color: @border;
+    }
+  }
+
+  .badge {
+    color: @background;
+    background-color: @color;
+  }
+}
+
+// Button sizes
+.button-size(@padding-vertical; @padding-horizontal; @font-size; @line-height; @border-radius) {
+  padding: @padding-vertical @padding-horizontal;
+  font-size: @font-size;
+  line-height: @line-height;
+  border-radius: @border-radius;
+}

web/cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/less/mixins/center-block.less

@@ -0,0 +1,7 @@
+// Center-align a block level element
+
+.center-block() {
+  display: block;
+  margin-left: auto;
+  margin-right: auto;
+}

web/cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/less/mixins/clearfix.less

@@ -0,0 +1,22 @@
+// Clearfix
+//
+// For modern browsers
+// 1. The space content is one way to avoid an Opera bug when the
+//    contenteditable attribute is included anywhere else in the document.
+//    Otherwise it causes space to appear at the top and bottom of elements
+//    that are clearfixed.
+// 2. The use of `table` rather than `block` is only necessary if using
+//    `:before` to contain the top-margins of child elements.
+//
+// Source: http://nicolasgallagher.com/micro-clearfix-hack/
+
+.clearfix() {
+  &:before,
+  &:after {
+    content: " "; // 1
+    display: table; // 2
+  }
+  &:after {
+    clear: both;
+  }
+}

web/cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/less/mixins/forms.less

@@ -0,0 +1,85 @@
+// Form validation states
+//
+// Used in forms.less to generate the form validation CSS for warnings, errors,
+// and successes.
+
+.form-control-validation(@text-color: #555; @border-color: #ccc; @background-color: #f5f5f5) {
+  // Color the label and help text
+  .help-block,
+  .control-label,
+  .radio,
+  .checkbox,
+  .radio-inline,
+  .checkbox-inline,
+  &.radio label,
+  &.checkbox label,
+  &.radio-inline label,
+  &.checkbox-inline label  {
+    color: @text-color;
+  }
+  // Set the border and box shadow on specific inputs to match
+  .form-control {
+    border-color: @border-color;
+    .box-shadow(inset 0 1px 1px rgba(0,0,0,.075)); // Redeclare so transitions work
+    &:focus {
+      border-color: darken(@border-color, 10%);
+      @shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 6px lighten(@border-color, 20%);
+      .box-shadow(@shadow);
+    }
+  }
+  // Set validation states also for addons
+  .input-group-addon {
+    color: @text-color;
+    border-color: @border-color;
+    background-color: @background-color;
+  }
+  // Optional feedback icon
+  .form-control-feedback {
+    color: @text-color;
+  }
+}
+
+
+// Form control focus state
+//
+// Generate a customized focus state and for any input with the specified color,
+// which defaults to the `@input-border-focus` variable.
+//
+// We highly encourage you to not customize the default value, but instead use
+// this to tweak colors on an as-needed basis. This aesthetic change is based on
+// WebKit's default styles, but applicable to a wider range of browsers. Its
+// usability and accessibility should be taken into account with any change.
+//
+// Example usage: change the default blue border and shadow to white for better
+// contrast against a dark gray background.
+.form-control-focus(@color: @input-border-focus) {
+  @color-rgba: rgba(red(@color), green(@color), blue(@color), .6);
+  &:focus {
+    border-color: @color;
+    outline: 0;
+    .box-shadow(~"inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px @{color-rgba}");
+  }
+}
+
+// Form control sizing
+//
+// Relative text size, padding, and border-radii changes for form controls. For
+// horizontal sizing, wrap controls in the predefined grid classes. `<select>`
+// element gets special love because it's special, and that's a fact!
+.input-size(@input-height; @padding-vertical; @padding-horizontal; @font-size; @line-height; @border-radius) {
+  height: @input-height;
+  padding: @padding-vertical @padding-horizontal;
+  font-size: @font-size;
+  line-height: @line-height;
+  border-radius: @border-radius;
+
+  select& {
+    height: @input-height;
+    line-height: @input-height;
+  }
+
+  textarea&,
+  select[multiple]& {
+    height: auto;
+  }
+}

web/cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/less/mixins/gradients.less

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+// Gradients
+
+#gradient {
+
+  // Horizontal gradient, from left to right
+  //
+  // Creates two color stops, start and end, by specifying a color and position for each color stop.
+  // Color stops are not available in IE9 and below.
+  .horizontal(@start-color: #555; @end-color: #333; @start-percent: 0%; @end-percent: 100%) {
+    background-image: -webkit-linear-gradient(left, @start-color @start-percent, @end-color @end-percent); // Safari 5.1-6, Chrome 10+
+    background-image: -o-linear-gradient(left, @start-color @start-percent, @end-color @end-percent); // Opera 12
+    background-image: linear-gradient(to right, @start-color @start-percent, @end-color @end-percent); // Standard, IE10, Firefox 16+, Opera 12.10+, Safari 7+, Chrome 26+
+    background-repeat: repeat-x;
+    filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=1)",argb(@start-color),argb(@end-color))); // IE9 and down
+  }
+
+  // Vertical gradient, from top to bottom
+  //
+  // Creates two color stops, start and end, by specifying a color and position for each color stop.
+  // Color stops are not available in IE9 and below.
+  .vertical(@start-color: #555; @end-color: #333; @start-percent: 0%; @end-percent: 100%) {
+    background-image: -webkit-linear-gradient(top, @start-color @start-percent, @end-color @end-percent);  // Safari 5.1-6, Chrome 10+
+    background-image: -o-linear-gradient(top, @start-color @start-percent, @end-color @end-percent);  // Opera 12
+    background-image: linear-gradient(to bottom, @start-color @start-percent, @end-color @end-percent); // Standard, IE10, Firefox 16+, Opera 12.10+, Safari 7+, Chrome 26+
+    background-repeat: repeat-x;
+    filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=0)",argb(@start-color),argb(@end-color))); // IE9 and down
+  }
+
+  .directional(@start-color: #555; @end-color: #333; @deg: 45deg) {
+    background-repeat: repeat-x;
+    background-image: -webkit-linear-gradient(@deg, @start-color, @end-color); // Safari 5.1-6, Chrome 10+
+    background-image: -o-linear-gradient(@deg, @start-color, @end-color); // Opera 12
+    background-image: linear-gradient(@deg, @start-color, @end-color); // Standard, IE10, Firefox 16+, Opera 12.10+, Safari 7+, Chrome 26+
+  }
+  .horizontal-three-colors(@start-color: #00b3ee; @mid-color: #7a43b6; @color-stop: 50%; @end-color: #c3325f) {
+    background-image: -webkit-linear-gradient(left, @start-color, @mid-color @color-stop, @end-color);
+    background-image: -o-linear-gradient(left, @start-color, @mid-color @color-stop, @end-color);
+    background-image: linear-gradient(to right, @start-color, @mid-color @color-stop, @end-color);
+    background-repeat: no-repeat;
+    filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=1)",argb(@start-color),argb(@end-color))); // IE9 and down, gets no color-stop at all for proper fallback
+  }
+  .vertical-three-colors(@start-color: #00b3ee; @mid-color: #7a43b6; @color-stop: 50%; @end-color: #c3325f) {
+    background-image: -webkit-linear-gradient(@start-color, @mid-color @color-stop, @end-color);
+    background-image: -o-linear-gradient(@start-color, @mid-color @color-stop, @end-color);
+    background-image: linear-gradient(@start-color, @mid-color @color-stop, @end-color);
+    background-repeat: no-repeat;
+    filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=0)",argb(@start-color),argb(@end-color))); // IE9 and down, gets no color-stop at all for proper fallback
+  }
+  .radial(@inner-color: #555; @outer-color: #333) {
+    background-image: -webkit-radial-gradient(circle, @inner-color, @outer-color);
+    background-image: radial-gradient(circle, @inner-color, @outer-color);
+    background-repeat: no-repeat;
+  }
+  .striped(@color: rgba(255,255,255,.15); @angle: 45deg) {
+    background-image: -webkit-linear-gradient(@angle, @color 25%, transparent 25%, transparent 50%, @color 50%, @color 75%, transparent 75%, transparent);
+    background-image: -o-linear-gradient(@angle, @color 25%, transparent 25%, transparent 50%, @color 50%, @color 75%, transparent 75%, transparent);
+    background-image: linear-gradient(@angle, @color 25%, transparent 25%, transparent 50%, @color 50%, @color 75%, transparent 75%, transparent);
+  }
+}

web/cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/less/mixins/grid-framework.less

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+// Framework grid generation
+//
+// Used only by Bootstrap to generate the correct number of grid classes given
+// any value of `@grid-columns`.
+
+.make-grid-columns() {
+  // Common styles for all sizes of grid columns, widths 1-12
+  .col(@index) { // initial
+    @item: ~".col-xs-@{index}, .col-sm-@{index}, .col-md-@{index}, .col-lg-@{index}";
+    .col((@index + 1), @item);
+  }
+  .col(@index, @list) when (@index =< @grid-columns) { // general; "=<" isn't a typo
+    @item: ~".col-xs-@{index}, .col-sm-@{index}, .col-md-@{index}, .col-lg-@{index}";
+    .col((@index + 1), ~"@{list}, @{item}");
+  }
+  .col(@index, @list) when (@index > @grid-columns) { // terminal
+    @{list} {
+      position: relative;
+      // Prevent columns from collapsing when empty
+      min-height: 1px;
+      // Inner gutter via padding
+      padding-left:  ceil((@grid-gutter-width / 2));
+      padding-right: floor((@grid-gutter-width / 2));
+    }
+  }
+  .col(1); // kickstart it
+}
+
+.float-grid-columns(@class) {
+  .col(@index) { // initial
+    @item: ~".col-@{class}-@{index}";
+    .col((@index + 1), @item);
+  }
+  .col(@index, @list) when (@index =< @grid-columns) { // general
+    @item: ~".col-@{class}-@{index}";
+    .col((@index + 1), ~"@{list}, @{item}");
+  }
+  .col(@index, @list) when (@index > @grid-columns) { // terminal
+    @{list} {
+      float: left;
+    }
+  }
+  .col(1); // kickstart it
+}
+
+.calc-grid-column(@index, @class, @type) when (@type = width) and (@index > 0) {
+  .col-@{class}-@{index} {
+    width: percentage((@index / @grid-columns));
+  }
+}
+.calc-grid-column(@index, @class, @type) when (@type = push) and (@index > 0) {
+  .col-@{class}-push-@{index} {
+    left: percentage((@index / @grid-columns));
+  }
+}
+.calc-grid-column(@index, @class, @type) when (@type = push) and (@index = 0) {
+  .col-@{class}-push-0 {
+    left: auto;
+  }
+}
+.calc-grid-column(@index, @class, @type) when (@type = pull) and (@index > 0) {
+  .col-@{class}-pull-@{index} {
+    right: percentage((@index / @grid-columns));
+  }
+}
+.calc-grid-column(@index, @class, @type) when (@type = pull) and (@index = 0) {
+  .col-@{class}-pull-0 {
+    right: auto;
+  }
+}
+.calc-grid-column(@index, @class, @type) when (@type = offset) {
+  .col-@{class}-offset-@{index} {
+    margin-left: percentage((@index / @grid-columns));
+  }
+}
+
+// Basic looping in LESS
+.loop-grid-columns(@index, @class, @type) when (@index >= 0) {
+  .calc-grid-column(@index, @class, @type);
+  // next iteration
+  .loop-grid-columns((@index - 1), @class, @type);
+}
+
+// Create grid for specific class
+.make-grid(@class) {
+  .float-grid-columns(@class);
+  .loop-grid-columns(@grid-columns, @class, width);
+  .loop-grid-columns(@grid-columns, @class, pull);
+  .loop-grid-columns(@grid-columns, @class, push);
+  .loop-grid-columns(@grid-columns, @class, offset);
+}