/* 基础重置 */
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Microsoft YaHei", sans-serif; line-height: 1.6; color: #333; background-color: #f8f9fa; }

/* 容器 */
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.section-padding { padding: 60px 0; }
.light-bg { background-color: #f0f2f5; }

/* 页头 */
.site-header { background: #fff; box-shadow: 0 2px 10px rgba(0,0,0,0.05); position: sticky; top: 0; z-index: 1000; }
.header-container { display: flex; justify-content: space-between; align-items: center; padding: 15px 0; }
.brand-logo { display: flex; align-items: center; }
.brand-logo img { height: 40px; margin-right: 12px; }
.brand-logo h1 { font-size: 1.5rem; color: #222; }
.main-navigation ul { display: flex; list-style: none; }
.main-navigation li { margin-left: 30px; }
.main-navigation a { text-decoration: none; color: #555; font-weight: 500; transition: color 0.3s; }
.main-navigation a:hover { color: #c00; }

/* 横幅 */
.main-banner { background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('../assets/banner-bg.jpg') center/cover no-repeat; color: white; text-align: center; padding: 100px 20px; }
.banner-overlay h2 { font-size: 2.8rem; margin-bottom: 15px; }
.banner-overlay p { font-size: 1.2rem; opacity: 0.9; }

/* 通知卡片 */
.core-notice { padding: 40px 0; }
.notice-card { background: #fff8e1; border-left: 5px solid #ff9800; padding: 25px; border-radius: 0 5px 5px 0; }
.notice-card h3 { color: #d32f2f; margin-bottom: 15px; display: flex; align-items: center; }
.notice-card h3 .icon-warning { margin-right: 10px; }

/* 服务表格 */
.service-matrix { overflow-x: auto; margin: 30px 0; }
table { width: 100%; border-collapse: collapse; background: white; box-shadow: 0 2px 8px rgba(0,0,0,0.05); }
th, td { padding: 16px 20px; text-align: left; border-bottom: 1px solid #eee; }
th { background-color: #f9f9f9; font-weight: 600; color: #444; }
tbody tr:hover { background-color: #f5f7fa; }
.badge { display: inline-block; background: #e8f5e9; color: #2e7d32; padding: 4px 10px; border-radius: 12px; font-size: 0.85rem; }
.badge-urgent { background: #ffebee; color: #c62828; }

/* 流程步骤 */
.process-steps { display: flex; flex-wrap: wrap; justify-content: space-between; margin: 40px 0; gap: 20px; }
.step { flex: 1 1 200px; display: flex; margin-bottom: 20px; }
.step-number { flex-shrink: 0; width: 40px; height: 40px; background: #c00; color: white; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 15px; }
.step-content h4 { margin-bottom: 8px; }

/* 网格与卡片 */
.commitment-grid, .service-access { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 25px; margin-top: 30px; }
.commitment-card, .service-access li { background: white; padding: 25px; border-radius: 8px; box-shadow: 0 3px 10px rgba(0,0,0,0.06); }
.commitment-icon { font-size: 2rem; margin-bottom: 15px; }

/* FAQ */
.faq-item { background: white; margin-bottom: 10px; border-radius: 5px; overflow: hidden; border: 1px solid #e0e0e0; }
.faq-item summary { padding: 18px 20px; cursor: pointer; font-weight: 500; list-style: none; position: relative; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:after { content: '+'; position: absolute; right: 20px; font-size: 1.2rem; }
.faq-item[open] summary:after { content: '-'; }
.faq-item p { padding: 0 20px 20px; color: #666; }

/* 页脚 */
.site-footer { background: #222; color: #aaa; padding: 40px 0 20px; text-align: center; }
.footer-content { display: flex; flex-direction: column; align-items: center; }
.footer-brand img { height: 30px; margin-bottom: 15px; }
.footer-links { margin: 20px 0; }
.footer-links a { color: #ccc; margin: 0 10px; text-decoration: none; }
.footer-links a:hover { color: #fff; }
.footer-copyright { margin-top: 20px; font-size: 0.9rem; color: #777; }
.footer-note { font-size: 0.8rem; margin-top: 5px; font-style: italic; }

/* 响应式 */
@media (max-width: 768px) {
    .header-container, .process-steps { flex-direction: column; }
    .main-navigation li { margin: 10px 0 0; }
    .main-navigation ul { flex-direction: column; }
    .banner-overlay h2 { font-size: 2rem; }
    .section-header h2 { font-size: 1.8rem; }
    .container { padding: 0 15px; }
}