/* 静态页面通用样式 */
.static-page { max-width: 960px; margin: 0 auto; padding: 40px 20px 60px; }

.static-head { text-align: center; margin-bottom: 36px; }
.static-head h1 { font-size: 32px; font-weight: 700; color: #2b2b2b; margin-bottom: 8px; font-family: "Noto Serif SC", serif; }
.static-head .subtitle { color: #999; font-size: 14px; }

.static-card {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 2px 12px rgba(0,0,0,.06);
  padding: 40px 48px;
  line-height: 1.9;
  font-size: 15px;
  color: #444;
}

.static-card h2 { font-size: 22px; font-weight: 700; color: #2b2b2b; margin: 28px 0 14px; padding-left: 12px; border-left: 4px solid #c8161d; }
.static-card h2:first-child { margin-top: 0; }
.static-card h3 { font-size: 17px; font-weight: 600; color: #333; margin: 20px 0 10px; }
.static-card p { margin-bottom: 14px; color: #555; }
.static-card ul, .static-card ol { margin: 10px 0 16px 20px; }
.static-card li { margin-bottom: 8px; color: #555; line-height: 1.8; }
.static-card .highlight { color: #c8161d; font-weight: 600; }
.static-card .note { background: #f9f9f9; border-radius: 8px; padding: 14px 18px; margin: 16px 0; font-size: 13px; color: #888; border-left: 3px solid #ddd; }
.static-card .note strong { color: #555; }

/* 功能卡片网格 */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin: 24px 0; }
.feature-grid .feature-item { text-align: center; padding: 24px 16px; background: #fafafa; border-radius: 10px; transition: all .25s; }
.feature-grid .feature-item:hover { background: #fef2f2; transform: translateY(-2px); }
.feature-grid .feature-icon { font-size: 32px; margin-bottom: 10px; }
.feature-grid .feature-title { font-size: 15px; font-weight: 600; color: #333; margin-bottom: 6px; }
.feature-grid .feature-desc { font-size: 13px; color: #888; line-height: 1.6; }

/* FAQ 折叠 */
.faq-list { margin-top: 8px; }
.faq-item { border: 1px solid #eee; border-radius: 10px; margin-bottom: 12px; overflow: hidden; transition: border-color .2s; }
.faq-item:hover { border-color: #ddd; }
.faq-item summary { padding: 16px 20px; font-size: 15px; font-weight: 600; color: #333; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; transition: background .2s; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { background: #fafafa; }
.faq-item summary .faq-icon { font-size: 18px; color: #c8161d; transition: transform .2s; flex-shrink: 0; margin-left: 12px; }
.faq-item[open] summary .faq-icon { transform: rotate(45deg); }
.faq-item[open] summary { border-bottom: 1px solid #eee; }
.faq-body { padding: 16px 20px; font-size: 14px; color: #666; line-height: 1.8; }
.faq-body p { margin-bottom: 8px; }
.faq-body p:last-child { margin-bottom: 0; }

/* 步骤 */
.step-list { counter-reset: step; margin: 20px 0; }
.step-list .step-item { position: relative; padding: 14px 0 14px 52px; border-bottom: 1px solid #f0f0f0; }
.step-list .step-item:last-child { border-bottom: none; }
.step-list .step-item::before { counter-increment: step; content: counter(step); position: absolute; left: 0; top: 14px; width: 36px; height: 36px; background: linear-gradient(135deg, #c8161d, #e84545); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 15px; font-weight: 700; font-family: "JetBrains Mono", monospace; }
.step-list .step-title { font-size: 15px; font-weight: 600; color: #333; margin-bottom: 4px; }
.step-list .step-desc { font-size: 14px; color: #888; line-height: 1.6; }

/* 表格 */
.static-table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 14px; }
.static-table th { background: #f5f5f5; padding: 10px 14px; text-align: left; font-weight: 600; color: #333; border-bottom: 2px solid #e0e0e0; }
.static-table td { padding: 10px 14px; border-bottom: 1px solid #f0f0f0; color: #555; }
.static-table tr:hover td { background: #fafafa; }

@media (max-width: 768px) {
  .static-page { padding: 24px 14px 40px; }
  .static-head h1 { font-size: 24px; }
  .static-card { padding: 24px 20px; font-size: 14px; }
  .static-card h2 { font-size: 18px; }
  .feature-grid { grid-template-columns: 1fr; }
}