/* ==================== 1. 基础变量与重置 ==================== */
:root {
    --primary-color: #165DFF;
    --primary-hover: #4080FF;
    --primary-bg: #E8F3FF;
    --success-color: #00B42A;
    --error-color: #F53F3F;
    --text-main: #1D2129;
    --text-body: #4E5969;
    --text-secondary: #86909C;
    --border-color: #C9CDD4;
    --bg-page: #F2F3F5;
    --bg-card: #FFFFFF;
    
    --radius-btn: 8px;
    --radius-card: 12px;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.12);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
    background-color: var(--bg-page);
    color: var(--text-body);
    line-height: 1.6;
    font-size: 14px;
}
.container {
    max-width: 980px; /* 限制最大宽度，让单列布局更好看 */
    margin: 40px auto;
    padding: 0 16px;
}
/* ==================== 2. 页面标题区 ==================== */
.page-header { 
    text-align: center; 
    margin-bottom: 32px; 
}
.page-title { 
    font-size: 28px; 
    font-weight: 600; 
    color: var(--text-main); 
    margin-bottom: 12px; 
}
.page-desc { 
    font-size: 14px; 
    color: var(--text-secondary); 
    max-width: 80%;
    margin: 0 auto;
}
/* ==================== 3. 核心输入卡片 (居中) ==================== */
.input-card {
    background: var(--bg-card);
    padding: 40px;
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-md);
    margin-bottom: 32px;
}
.form-group { margin-bottom: 24px; }
.form-label { display: block; font-size: 14px; color: var(--text-main); margin-bottom: 8px; font-weight: 500; }
.required { color: var(--error-color); margin-left: 4px; }
.input-wrapper { position: relative; }
.input-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
}
.form-control {
    width: 100%;
    height: 48px;
    padding: 0 16px 0 44px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-btn);
    font-size: 15px;
    transition: all 0.3s;
    outline: none;
}
.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(22, 93, 255, 0.15);
}
.form-hint { font-size: 12px; color: var(--text-secondary); margin-top: 8px; }
.error-msg { font-size: 12px; color: var(--error-color); margin-top: 8px; display: none; align-items: center; gap: 4px;}
.btn-primary {
    width: 100%;
    height: 50px;
    background: #e5840c;
    color: #fff;
    border: none;
    border-radius: var(--radius-btn);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 10px;
}
.btn-primary:hover { background: #6a4a32; box-shadow: var(--shadow-md); transform: translateY(-1px); }
.btn-primary:active { transform: scale(0.98); }
.btn-primary:disabled { background: var(--border-color); cursor: not-allowed; transform: none; }
/* ==================== 4. 结果展示区 (默认隐藏) ==================== */
.result-section {
    display: none; /* JS控制显示 */
    animation: fadeIn 0.6s ease-out;
}
@keyframes fadeIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
/* 总分概览卡片 */
.overview-card {
    background: var(--bg-card);
    border-radius: var(--radius-card);
    padding: 32px;
    box-shadow: var(--shadow-sm);
    text-align: center;
    margin-bottom: 24px;
}
.score-circle {
    width: 140px; height: 140px;
    border-radius: 50%;
    background: var(--primary-bg);
    color: var(--primary-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 5px solid var(--primary-color);
    margin: 0 auto 20px;
}
.score-num { font-size: 48px; font-weight: 700; line-height: 1; }
.score-level { font-size: 18px; font-weight: 600; margin-top: 6px; color: var(--success-color); }
.patent-info h2 { font-size: 20px; color: var(--text-main); margin-bottom: 16px; }
.info-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; text-align: left; background: var(--bg-page); padding: 20px; border-radius: 8px;}
.info-item { font-size: 14px; color: var(--text-body); }
.info-item span:first-child { color: var(--text-secondary); margin-right: 8px; }
.action-buttons { display: flex; gap: 12px; justify-content: center; margin-top: 24px; }
.btn-outline {
    padding: 10px 24px;
    border: 1px solid var(--border-color);
    background: #fff;
    border-radius: var(--radius-btn);
    color: var(--text-body);
    cursor: pointer;
    transition: all 0.3s;
    font-size: 14px;
}
.btn-outline:hover { border-color: var(--primary-color); color: var(--primary-color); background: var(--primary-bg); }
/* 图表区 */
.chart-card {
    background: var(--bg-card);
    border-radius: var(--radius-card);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    margin-bottom: 24px;
}
.card-header { font-size: 18px; font-weight: 600; color: var(--text-main); margin-bottom: 20px; border-left: 4px solid var(--primary-color); padding-left: 12px; }
#radarChart { width: 100%; height: 350px; }
/* 详细表格 */
.table-card {
    background: var(--bg-card);
    border-radius: var(--radius-card);
    padding: 24px;
    box-shadow: var(--shadow-sm);
}
.data-table { width: 100%; border-collapse: collapse; }
.data-table th { text-align: left; padding: 14px 12px; background: var(--bg-page); color: var(--text-main); font-weight: 600; font-size: 13px;}
.data-table td { padding: 14px 12px; border-bottom: 1px solid var(--bg-page); color: var(--text-body); font-size: 14px; }
.data-table tr:last-child td { border-bottom: none; }
.tag { padding: 4px 10px; border-radius: 4px; font-size: 12px; font-weight: 500;}
.tag-law { background: #E8F3FF; color: #165DFF; }
.tag-tech { background: #E8FFEA; color: #00B42A; }
/* ==================== 5. 响应式适配 ==================== */
@media (max-width: 768px) {
    .container { margin: 20px auto; }
    .input-card { padding: 24px; }
    .page-title { font-size: 24px; }
    .info-grid { grid-template-columns: 1fr; }
    .action-buttons { flex-direction: column; }
    .btn-outline { width: 100%; }
}