:root{color-scheme:light;--bg: #ffffff;--surface: #ffffff;--sidebar: #fafafa;--line: #e7e7e7;--text: #111111;--text-soft: #666666;--active: #f1f1f1;--container-gap: 24px}*{box-sizing:border-box}html,body,#app{min-height:100vh}body{margin:0;min-width:320px;font-family:Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;color:var(--text);background:var(--bg)}a{color:inherit;text-decoration:none}iframe{border:0}.app-shell{min-height:100vh;display:grid;grid-template-columns:220px minmax(0,1fr)}.sidebar{padding:20px 14px;border-right:1px solid var(--line);background:var(--sidebar)}.sidebar__brand{display:block;padding:10px 12px 18px;font-size:18px}.sidebar__nav{display:flex;flex-direction:column;gap:4px}.sidebar__link{display:block;padding:10px 12px;border-radius:8px;color:var(--text-soft)}.sidebar__link.router-link-active{background:var(--active);color:var(--text)}.shell-main{min-width:0;padding:var(--container-gap)}.page{min-height:calc(100vh - var(--container-gap) * 2)}.page--blank{background:transparent}.page-card{min-height:calc(100vh - var(--container-gap) * 2);border:1px solid var(--line);border-radius:12px;background:var(--surface)}.city-view{padding:18px}.city-view__header{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:16px}.city-view__header h1,.empty-state h2{margin:0;font-size:20px;font-weight:600}.text-link{color:var(--text-soft);font-size:14px}.guide-frame{width:100%;min-height:calc(100vh - 120px);border-radius:8px;background:#fff}.empty-state{padding:24px}.empty-state p{margin:10px 0 0;color:var(--text-soft);line-height:1.7}.city-list-page{padding:18px}.simple-city-list{list-style:none;margin:0;padding:0}.simple-city-list li+li{border-top:1px solid var(--line)}.simple-city-list a{display:block;padding:14px 4px}@media (max-width: 800px){.app-shell{grid-template-columns:1fr}.sidebar{border-right:0;border-bottom:1px solid var(--line)}.sidebar__nav{flex-direction:row;flex-wrap:wrap}.page,.page-card{min-height:auto}.guide-frame{min-height:70vh}}