:root{color-scheme:light;--ink:#263540;--muted:#647580;--line:#dce4e8;--blue:#1673aa;--orange:#cf6b24;--nose:#b89455}*{box-sizing:border-box}body{margin:0;background:#fff;color:var(--ink);font:15px/1.55 "Microsoft YaHei",system-ui,sans-serif}main{max-width:1180px;margin:auto;padding:24px 22px 18px}h1,h2,p{margin:0}h1{font-size:26px;line-height:1.3;font-weight:650}h2{font-size:17px;font-weight:650}header>p:last-child{color:var(--muted);margin-top:8px}.eyebrow{font-size:12px;color:var(--blue);letter-spacing:1px;margin-bottom:5px}button,input,select{font:inherit}button,select{border:1px solid #ccd9e0;border-radius:6px;background:#fff;color:var(--ink);padding:6px 12px}button{cursor:pointer}button:hover{background:#edf5f9}button:focus-visible,select:focus-visible,input:focus-visible{outline:3px solid #9bc9e6;outline-offset:2px}.quiet{background:#fff!important}#play{color:#fff;background:#24678c;border-color:#24678c;min-width:66px}.controls{background:#f5f8fa;border-radius:8px;padding:13px 16px;margin:16px 0}.progress{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.progress label{white-space:nowrap}.progress input{flex:1;min-width:200px}.progress strong{font-variant-numeric:tabular-nums}.parameters{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:15px}.parameters label{font-size:13px;display:grid;grid-template-columns:1fr auto;column-gap:8px}.parameters input{width:100%;grid-column:1;margin:7px 0}.parameters output{grid-column:2;grid-row:2;min-width:38px;font-variant-numeric:tabular-nums;color:#334e60}input[type=range]{accent-color:#24678c}.model-line{font-size:12px;color:var(--muted);margin-top:8px}.peak-row{display:grid;grid-template-columns:1.1fr 1fr 1fr;gap:10px;align-items:stretch;margin:15px 0}.peak-row>div{align-self:center}.peak-row b{font-size:14px}.peak-row small{display:block;font-size:11px;color:var(--muted)}.peak-row button{text-align:left;font-size:13px;line-height:1.55;background:#fbfcfd}.peak-row button strong{font-variant-numeric:tabular-nums;font-size:17px}.peak-row button span{font-size:12px;color:var(--muted)}.legend{display:flex;align-items:center;gap:18px;font-size:12px;margin:16px 0 8px;flex-wrap:wrap}.legend i{display:inline-block;width:18px;height:4px;vertical-align:middle;margin-right:6px}.positive{background:var(--blue)}.negative{background:var(--orange)}.legend label{margin-left:auto}.legend select{padding:3px 5px}.scenario{border:1px solid var(--line);border-radius:8px;padding:10px 12px 1px;margin-bottom:12px}.scenario-head{display:flex;align-items:center;justify-content:space-between;gap:8px}.section-state{display:flex;gap:8px;align-items:center;font-size:13px}.section-state svg{width:84px;height:40px}.scenario>svg{display:block;width:100%;height:auto}.reading-note{font-size:13px;color:#455d6b;background:#f5f8fa;border-left:3px solid #9bb8c7;padding:8px 12px;margin:2px 0 16px;min-height:55px}.history-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.chart-card{padding:12px 12px 0;border:1px solid var(--line);border-radius:8px}.chart-card p{font-size:12px;color:var(--muted);min-height:36px;margin-top:4px}.chart-card svg{display:block;width:100%;height:auto}.chart-title{display:flex;justify-content:space-between;align-items:center;gap:4px}.chart-title select{font-size:12px;padding:3px}footer{font-size:11px;color:var(--muted);padding-top:14px}footer p+p{margin-top:4px}a{color:#24678c}svg text{font-family:"Microsoft YaHei",system-ui,sans-serif;fill:var(--ink)}@media(max-width:760px){main{padding:18px 10px}.parameters{grid-template-columns:1fr 1fr;gap:8px 18px}.peak-row{grid-template-columns:1fr 1fr}.peak-row>div{grid-column:1/-1}.history-grid{grid-template-columns:1fr}.scenario{padding:8px 4px}.scenario-head{padding:0 6px}.section-state{font-size:11px}.section-state svg{width:60px}.legend{gap:8px}.legend label{margin-left:0}.scenario>svg{min-height:245px}.progress label{font-size:13px}h1{font-size:23px}}

/* Keep physical-axis labels readable in the textbook column. */
.scenario>svg text{font-size:17px}.chart-card>svg text{font-size:15px}