html { background: #fff; scroll-behavior: smooth; }
html, body { width: 100%; max-width: 720px; margin: 0 auto; padding: 0; }
body { color: #111; background: #fff; font-family: Arial, "Microsoft YaHei", sans-serif; overflow-wrap: break-word; }
*, *::before, *::after { box-sizing: border-box; }
#site-content { width: 100%; min-width: 0; }
img { max-width: 100%; vertical-align: middle; }
.nav-header_526 { top: 0; left: 50%; transform: translateX(-50%); max-width: 720px !important; min-width: 0 !important; }
.header_nav { height: 38px; }
.article-navigation { display: flex; justify-content: space-between; padding: 7px 12px; background: #fffbd6; font-size: 13px; position: relative; z-index: 1; }
.article-navigation a { color: #523e00; text-decoration: underline; }
.draw-embed { display: block; width: 100%; background: #fff; overflow: hidden; }
.draw-frame { display: block; width: 100%; margin: 0; padding: 0; border: 0; background: #fff; }