:root{--paper:#f6f5f1;--ink:#282c29;--muted:#6c7068;--line:#dcded5;--accent:#7d5b70;--green:#526b50;--red:#a4513d;font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}
*{box-sizing:border-box}body{margin:0;padding-bottom:48px}button,input,select{font:inherit;color:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--accent);outline-offset:3px}a{color:inherit}button{border:0;background:none}button:disabled{cursor:default;opacity:.5}[hidden]{display:none!important}.study-layout{display:grid;grid-template-columns:396px minmax(0,1fr);min-height:calc(100svh - 48px)}.study-sidebar{padding:28px 28px 32px;border-right:1px solid var(--line)}.study-topline{display:flex;align-items:center;justify-content:space-between;gap:12px}.back-link{font-size:12px;text-decoration:none;color:var(--muted)}.back-link:hover{color:var(--ink)}.study-language{display:flex;gap:4px}.study-language button{padding:4px 6px;color:var(--muted);font-size:12px}.study-language [aria-pressed=true]{color:var(--ink);text-decoration:underline;text-underline-offset:5px}.study-intro{margin:28px 0 22px}.study-year{font-size:56px;font-weight:400;line-height:1;letter-spacing:-3px;font-variant-numeric:tabular-nums}.study-intro h1{margin:10px 0 14px;font-size:26px;font-weight:500;letter-spacing:-.7px}.study-intro p{font-size:13px;line-height:1.6;margin:0;color:var(--muted)}.study-intro .dataset-notice{margin-top:18px;padding-top:15px;border-top:1px solid var(--line);font-size:11px;line-height:1.6}.tabs{display:flex;border-bottom:1px solid var(--line);gap:22px;margin-bottom:24px}.tab-btn{padding:10px 0 13px;font-size:12px;color:var(--muted);border-bottom:2px solid transparent}.tab-btn.active{color:var(--ink);border-bottom-color:var(--ink)}.tab-content{display:none}.tab-content.active{display:block}.study-fields{display:grid;grid-template-columns:1fr 1fr;gap:12px}.study-fields label{display:flex;flex-direction:column;gap:8px;min-width:0;font-size:11px;color:var(--muted)}.study-fields input,.study-fields select{width:100%;height:38px;min-width:0;border:1px solid var(--line);border-radius:0;padding:8px;background:transparent;color:var(--ink);font-size:12px}.driver-heading{display:flex;justify-content:space-between;align-items:baseline;gap:10px;margin-top:24px}.study-sidebar h2{font-size:13px;font-weight:500;margin:0}.driver-heading span{color:var(--muted);font-size:10px}.load-status{min-height:2.6em;color:var(--muted);font-size:11px;line-height:1.4;margin:8px 0 10px}.load-status[data-state=error],.chart-error{color:var(--red)}.driver-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:6px;padding:0 6px 2px 0}.driver-grid .shift-heading{grid-column:1/-1;border-bottom:1px solid var(--line);margin:8px 0 3px;padding-bottom:5px;color:var(--muted);font-size:10px;font-weight:400}.driver-item{border:1px solid var(--line);font-size:11px;padding:8px 2px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.driver-item:hover{background:#eae7e1}.driver-item.selected{color:var(--paper);border-color:var(--accent);background:var(--accent)}.text-button{font-size:12px;text-decoration:underline;padding:0 0 12px}.study-visual{padding:60px 46px 30px;min-width:0;display:flex;flex-direction:column}.chart-heading{display:flex;justify-content:space-between;align-items:flex-start;gap:24px}.chart-eyebrow{font-size:12px;color:var(--muted);margin:0 0 14px}.chart-heading h2{font-size:26px;font-weight:400;letter-spacing:-.7px;line-height:1.25;margin:0}.average-readout{display:flex;flex-direction:column;flex-shrink:0;align-items:flex-end;gap:5px}.average-readout strong{font-size:48px;font-weight:400;line-height:1;font-variant-numeric:tabular-nums;letter-spacing:-2px}.average-readout span{font-size:11px}.average-readout small{font-size:10px;color:var(--muted)}.chart-intro{color:var(--muted);font-size:12px;line-height:1.6;max-width:560px;margin:22px 0 34px}.chart-panel{display:none;flex:1;min-height:380px}.chart-panel.active{display:flex}.chart-wrapper{position:relative;min-height:380px;width:100%;height:100%}.chart-empty{align-self:center;text-align:center;width:100%;color:var(--muted);font-size:13px;line-height:1.7;padding:30px}.chart-error{font-size:12px}.chart-notes{border-top:1px solid var(--line);padding-top:14px;margin-top:24px;display:flex;gap:24px;flex-wrap:wrap;color:var(--muted);font-size:10px;line-height:1.5}.chart-notes p{margin:0;display:flex;gap:8px;align-items:center}.note-line{display:inline-block;width:18px;border-top:2px solid var(--accent);flex-shrink:0}.note-line.tension{border-top:1px dashed var(--red)}.upload-description,.upload-ready{font-size:13px;line-height:1.7;color:var(--muted);margin:14px 0}.upload-format{margin:20px 0;line-height:1.8;font-size:10px;color:var(--muted)}.upload-format code{display:block;font-size:11px;color:var(--ink);white-space:normal;overflow-wrap:anywhere}.upload-format span{display:block}.upload-area{border:1px dashed #b4b4aa;padding:28px 16px;text-align:center}.upload-area p{font-size:11px;color:var(--muted);margin:12px 0 0}.upload-area.dragging{border-color:var(--accent);background:#eee9e7}.action-btn{border:1px solid var(--ink);padding:10px 16px;background:var(--ink);color:var(--paper);font-size:12px}.action-btn:hover{background:var(--accent);border-color:var(--accent)}.model-note{font-size:11px;color:var(--muted);line-height:1.6;margin-top:22px}.no-script{padding:28px;position:relative}.no-script a{display:block}.path-bar{font-weight:400;font-size:12px}.path-bar .icp-link{font-weight:400;font-size:10px}
@media(min-width:861px){.study-layout{height:calc(100svh - 48px);min-height:680px}.study-sidebar{overflow-y:auto;scrollbar-width:thin}.chart-wrapper{height:auto;flex:1}.study-visual{min-height:0}.chart-panel{min-height:220px}}
@media(max-width:1100px) and (min-width:861px){.study-visual{padding:52px 26px 26px}.chart-heading h2{font-size:23px}.average-readout strong{font-size:42px}.chart-heading{gap:14px}.chart-notes{gap:9px}}
@media(max-width:860px){.study-layout{display:block}.study-sidebar{padding:22px 22px 28px;border-right:0;border-bottom:1px solid var(--line)}.study-intro{margin:28px 0 22px}.study-year{font-size:46px}.study-intro h1{font-size:26px}.study-intro p{max-width:560px}.study-fields{max-width:520px}.driver-grid{grid-template-columns:repeat(auto-fill,minmax(70px,1fr))}.study-visual{padding:30px 18px 24px}.chart-heading{gap:14px}.chart-heading h2{font-size:22px}.chart-eyebrow{font-size:11px;margin-bottom:10px}.average-readout strong{font-size:38px}.average-readout span{font-size:10px}.chart-intro{font-size:11px;margin:18px 0 24px}.chart-panel{min-height:360px}.chart-wrapper{height:360px;min-height:360px}.chart-notes{gap:10px;margin-top:22px;font-size:10px}.chart-empty{min-height:260px}.study-sidebar h2{font-size:13px}.upload-area{padding:22px 16px}.tabs{margin-bottom:22px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation:none!important;transition:none!important}}