.tool-container {
    padding: 32px;
    max-width: 1200px;
    margin: 0 auto;
}
.tool-container > h3 {
    font-size: 23px;
    color: #1e293b;
    margin: 0 0 20px;
    font-weight: 500;
}

/*快捷筛选按钮区域*/
.quick-wrap {
    margin-bottom: 18px;
}
.quick-tit {
    font-size: 14px;
    color: #475569;
    margin-bottom: 10px;
}
.quick-btn-group {
    display: flex;
    flex-wrap: wrap;
    gap: 11px;
}
.quick-btn {
    padding: 7px 16px;
    background: #f1f5f9;
    border: 1px solid #e2e8f0;
    border-radius: 24px;
    font-size: 14px;
    color: #334155;
    cursor: pointer;
    transition: all 0.22s ease;
}
.quick-btn:hover {
    background: #3674d9;
    color: #fff;
    border-color: #3674d9;
}
.quick-btn.active {
    background: #3674d9;
    color: #fff;
    border-color: #3674d9;
}

/*搜索框*/
.search-box {
    margin-bottom: 32px;
}
#search {
    padding: 11px 15px;
    width: 380px;
    border: 1px solid #cbd5e1;
    border-radius: 7px;
    font-size: 15px;
    outline: none;
    transition: 0.2s;
}
#search:focus {
    border-color: #3674d9;
    box-shadow: 0 0 0 3px rgba(54,116,217,0.12);
}

/*一级分组大标题（大类）*/
.group-big-title {
    font-size: 19px;
    color: #1e293b;
    margin: 36px 0 16px;
    padding: 9px 12px;
    border-left: 5px solid #3674d9;
    background: #f8fafc;
    border-radius: 0 6px 6px 0;
}
/*二级小标题（单个原字标题）*/
.item-small-title {
    font-size:16px;
    color:#334155;
    margin:22px 0 12px 6px;
}

/*卡片外层栅格：一行自适应4张卡片*/
.card-row-wrap {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(265px, 1fr));
    gap: 18px;
    margin-bottom:6px;
}

/*单个生字卡片样式 柔和蓝风*/
.char-card {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 2px 9px rgba(54,116,217,0.07);
    transition: transform 0.2s ease,box-shadow 0.2s;
}
.char-card:hover{
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(54,116,217,0.11);
}


.word-py-row{
    display:flex;
    align-items:flex-end;
    gap:8px;
    margin-bottom:8px;
}

.card-top-word{
    font-size:40px;
    font-weight:bold;
    color:#3674d9;
}

.card-pinyin{
    font-size:30px;
    color:#d97706;
}

.card-tag{
    display:inline-block;
    padding:3px 8px;
    background:#eff6ff;
    color:#3674d9;
    font-size:13px;
    border-radius:4px;
    margin-bottom:10px;
}
.card-desc{
    font-size:14px;
    color:#475569;
    line-height:1.6;
    margin:8px 0;
}
.card-word{
    font-size:13px;
    color:#64748b;
    padding-top:6px;
    border-top:1px dashed #f1f5f9;
}