.crumbs{align-items:center;gap:8px;margin-bottom:10px;display:flex}.crumbs a{color:var(--dim);font-weight:500}.crumbs a:hover{color:var(--ink)}.st-head{grid-template-columns:minmax(0,1fr) auto;align-items:end;gap:24px;display:grid}.st-title .sub{flex-wrap:wrap;gap:6px;margin-top:8px;display:flex}.st-title .summary{color:var(--ink);max-width:62ch;margin-top:12px;font-size:1.12rem}.st-title .fine{margin-top:6px}.live{gap:6px;min-width:260px;padding:16px 18px;display:grid}.live-row{align-items:center;gap:12px;display:flex}.live-aqi{font:760 2.6rem/1 var(--font-display);letter-spacing:-.03em}@media (width<=760px){.st-head{grid-template-columns:minmax(0,1fr)}.live{min-width:0}}.chart-card{padding:18px 20px 14px}.chart-bar{flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:8px;display:flex}.chart-bar .level{color:var(--dim);margin-left:auto;font-weight:600}.chart-bar .level.loading{color:var(--accent)}.history{height:440px;margin:0 -6px}@media (width<=620px){.history{height:340px}.chart-bar .level{order:3;width:100%;margin-left:0}}.seg button:disabled{opacity:.4;cursor:not-allowed}.card-head{flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:12px;display:flex}.card-head h2{font-size:1.12rem}.st-grid{align-items:start}.years{min-height:230px}.calendar{height:190px}.st-grid-wide{grid-template-columns:minmax(0,1.4fr) minmax(0,1fr)}.st-stack{gap:14px;display:grid}@media (width<=860px){.st-grid-wide{grid-template-columns:minmax(0,1fr)}}.hourmonth{height:330px;margin-top:8px}.check-head{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;display:flex}.check-head>div:first-child{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.check-counts{color:var(--dim);gap:14px;font-size:.88rem;display:flex}.check-counts b{color:var(--ink)}.check-counts .hi b{color:#c8641c}.check-counts .lo b{color:#2f6db5}.check .sub{max-width:80ch;margin:10px 0 6px}.check-chart{min-height:260px}.check-legend{flex-wrap:wrap;gap:16px;margin-top:4px;display:flex}.check-legend span{align-items:center;gap:6px;display:inline-flex}.check-legend i{display:inline-block}.check-legend .ln{background:var(--ink);width:16px;height:2px}.check-legend .sl{border-top:2px dashed #2f6db599;width:16px;height:0}.check-legend .hint{color:var(--faint);margin-left:auto}.check-legend{align-items:center}.check-legend .rg{background:#2f6db533;border-radius:2px;width:14px;height:10px}.check-legend .dot-hi,.check-legend .dot-lo{background:#c8641c;border-radius:50%;width:8px;height:8px}.check-legend .dot-lo{background:#2f6db5}.reasons{border-top:1px solid var(--line);margin-top:12px;padding-top:10px}.reasons summary{cursor:pointer;font-size:.92rem;font-weight:600}.reasons ul{color:var(--dim);gap:4px;margin:8px 0 8px 18px;font-size:.9rem;display:grid}.quality-table td{padding:8px;font-size:.86rem}.quality-table th{padding:0 8px 8px}.quality-table td:nth-child(2){align-items:center;gap:8px;display:flex}.meter{background:var(--surface2);border:1px solid var(--line);border-radius:4px;flex:1;min-width:60px;height:7px;overflow:hidden}.meter i{background:var(--ok);border-radius:4px;height:100%;display:block}.meter i.low{background:var(--warn)}.quality-table .warn{color:var(--warn);font-weight:650}.note{border-top:1px solid var(--line);gap:4px;padding:10px 0;display:grid}.note:first-child{border-top:0;padding-top:0}.cite{font-family:var(--font-mono);background:var(--surface2);border:1px solid var(--line);word-break:break-word;border-radius:10px;margin-bottom:10px;padding:12px 14px;font-size:.82rem}.zoom-ctl{align-items:center;gap:6px;display:inline-flex}.zoom-ctl .icon-btn{flex-basis:30px;width:30px;height:30px;font-size:1.1rem}.history-legend{flex-wrap:wrap;align-items:center;gap:6px 16px;margin:4px 0 8px;display:flex}.history-legend span{align-items:center;gap:6px;display:inline-flex}.history-legend i{display:inline-block}.history-legend .lg-line{background:linear-gradient(90deg, var(--line-good), var(--line-moderate), var(--line-poor), var(--line-very_poor));border-radius:2px;width:18px;height:3px}.history-legend .lg-peak{background:var(--peak);border:1px solid var(--line);border-radius:2px;width:14px;height:10px}.history-legend .lg-low{border:1.3px solid var(--faint);background:var(--surface);border-radius:50%;width:8px;height:8px}.history-legend .lg-limit{border-top:1.5px dashed var(--dim);width:16px}.history-legend .lg-hint{color:var(--faint);margin-left:auto}.check-bar{flex-wrap:wrap;align-items:center;gap:10px;margin:12px 0 6px;display:flex}.check-legend .vw{background:var(--accent-dim);border:1px solid var(--accent-line);border-radius:2px;width:14px;height:10px}