* { margin: 0; padding: 0; box-sizing: border-box; } body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif; background: #f5f7fa; color: #1a2a3a; line-height: 1.7; padding: 20px; } .container { max-width: 920px; margin: 0 auto; background: #ffffff; border-radius: 20px; box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06); padding: 40px 36px 48px; } /* 面包屑导航 */ .breadcrumb { font-size: 13px; color: #8a9aa8; margin-bot