:root{--tg-bg: #ffffff;--tg-text: #1c1c1e;--tg-hint: #8e8e93;--tg-link: #2481cc;--tg-button: #2481cc;--tg-button-text: #ffffff;--tg-secondary-bg: #f2f2f7}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--tg-bg);color:var(--tg-text)}.layout{min-height:100vh;display:flex;flex-direction:column}.app-header{position:sticky;top:0;display:flex;align-items:center;gap:8px;padding:10px 12px;background:var(--tg-secondary-bg);border-bottom:1px solid rgba(0,0,0,.08);z-index:10}.app-header-title{flex:1;font-weight:600;text-align:center}.back-link{color:var(--tg-link);text-decoration:none;font-size:14px}.switch-restaurant{border:none;background:none;color:var(--tg-link);font-size:13px;cursor:pointer}.app-main{padding:12px;flex:1}.restaurant-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:10px}.restaurant-card{padding:20px 12px;border-radius:12px;border:1px solid rgba(0,0,0,.1);background:var(--tg-secondary-bg);font-size:15px;font-weight:600;cursor:pointer}.report-menu{display:flex;flex-direction:column;gap:8px}.report-menu-item{display:flex;align-items:center;gap:10px;padding:14px 16px;border-radius:12px;background:var(--tg-secondary-bg);color:var(--tg-text);text-decoration:none;font-size:15px;font-weight:500}.report-menu-icon{font-size:20px}.period-tabs{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:12px}.period-tab{padding:7px 12px;border-radius:999px;border:1px solid rgba(0,0,0,.12);background:transparent;color:var(--tg-text);font-size:13px;cursor:pointer}.period-tab-active{background:var(--tg-button);color:var(--tg-button-text);border-color:var(--tg-button)}.date-range-picker{display:flex;gap:12px;margin-bottom:12px}.date-range-picker label{display:flex;flex-direction:column;font-size:12px;color:var(--tg-hint);gap:4px}.section{margin-bottom:16px;padding:12px 14px;border-radius:12px;background:var(--tg-secondary-bg)}.section h3{margin:0 0 8px;font-size:14px;color:var(--tg-hint);font-weight:600}.section h4{margin:12px 0 4px;font-size:13px}.subsection{margin-bottom:8px}.metric-row{display:flex;justify-content:space-between;gap:12px;padding:6px 0;border-bottom:1px solid rgba(0,0,0,.06);font-size:14px}.metric-row:last-child{border-bottom:none}.metric-label{color:var(--tg-hint)}.metric-value{font-weight:600;text-align:right}.trend-up{color:#34c759;font-weight:600}.trend-down{color:#ff3b30;font-weight:600}.trend-flat{color:var(--tg-hint);font-weight:600}.state-message{padding:20px 0;text-align:center;color:var(--tg-hint);font-size:14px}.state-error{color:#ff3b30}.data-table{width:100%;border-collapse:collapse;font-size:13px;margin-bottom:8px}.data-table td{padding:4px 2px;border-bottom:1px solid rgba(0,0,0,.05)}.data-table-num{text-align:right;white-space:nowrap}.bar-chart{display:flex;flex-direction:column;gap:4px}.bar-chart-row{display:grid;grid-template-columns:44px 1fr 70px;align-items:center;gap:6px;font-size:12px}.bar-chart-track{height:10px;background:#0000000f;border-radius:6px;overflow:hidden}.bar-chart-fill{height:100%;background:var(--tg-button)}.bar-chart-value{text-align:right;color:var(--tg-hint)}.primary-button{padding:10px 18px;border-radius:10px;border:none;background:var(--tg-button);color:var(--tg-button-text);font-size:14px;font-weight:600;cursor:pointer}.primary-button:disabled{opacity:.6;cursor:default}.price-spike-card{padding:10px;margin-bottom:8px;border-radius:10px;background:#ff3b3014;font-size:13px}.price-spike-title{font-weight:600;margin-bottom:4px}.price-spike-meta{color:var(--tg-hint);font-size:12px}