:root{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Roboto,sans-serif;line-height:1.5;color-scheme:light}*{box-sizing:border-box}html,body,#root{margin:0;padding:0;height:100%;background:#f5f7fa}.app-shell{min-height:100vh;display:flex;flex-direction:column}.app-header{background:linear-gradient(120deg,#1677ff,#003eb3);color:#fff;padding:24px 32px}.app-header-row{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}.app-header h1{margin:0;font-size:22px;font-weight:600;letter-spacing:1px}.app-header p{margin:6px 0 0;font-size:13px;opacity:.85}.app-content{max-width:1280px;width:100%;margin:0 auto;padding:24px 32px;display:flex;flex-direction:column;gap:16px;flex:1}.app-footer{text-align:center;font-size:12px;color:#8a8a8a;padding:16px;border-top:1px solid #e6e6e6;background:#fff}.empty-result{text-align:center;padding:40px 16px;color:#999}@media(max-width:768px){.app-header,.app-content{padding:16px}.app-header h1{font-size:18px;letter-spacing:0}.app-header p{font-size:12px;margin-top:4px}.app-header-row{flex-direction:column;align-items:flex-start;gap:12px}}@media(max-width:480px){.app-header,.app-content{padding:12px}.app-content{gap:12px}}