:root{color-scheme:light;--paper:#f5f7fa;--ink:#192c44;--blue:#2d5e9d;--sage:#68877b;--sand:#e3b36a;--line:#d9e1eb;--muted:#617187;--white:#fff;font-family:"Microsoft YaHei UI","PingFang SC",system-ui,sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}
*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,input,select,summary{-webkit-tap-highlight-color:transparent}button{cursor:pointer;border:1px solid transparent;background:var(--blue);color:white;border-radius:6px;padding:11px 18px;font-size:14px;font-weight:600;transition:background .15s}button:hover{background:#214c83}button:disabled{opacity:.55;cursor:wait}button.quiet{background:transparent;color:var(--muted);padding:8px 12px}button.quiet:hover{background:#e9eef5;color:var(--ink)}button.secondary{background:var(--white);color:var(--ink);border-color:var(--line)}button.secondary:hover{border-color:var(--blue)}button.selected{background:#e6edf7;color:var(--blue)}:focus-visible{outline:3px solid #e3b36a;outline-offset:3px}a{color:var(--blue)}input,select{border:1px solid #b8c6d7;border-radius:5px;background:white;color:var(--ink);padding:10px 12px}input:disabled{background:#f1f3f6}input[type=date]{max-width:165px;padding:8px}select{font-size:13px;padding:8px}abbr{text-decoration:none;font-size:11px;letter-spacing:.02em;color:var(--muted);margin-left:5px}h1,h2,p{margin-top:0}h1{font-size:30px;line-height:1.4;font-weight:650;letter-spacing:-.025em;margin-bottom:10px}h2{font-size:19px;font-weight:650;line-height:1.5;margin-bottom:7px}p{font-size:14px;line-height:1.8;color:var(--muted)}strong{font-variant-numeric:tabular-nums}.masthead{height:100px;display:flex;justify-content:space-between;align-items:center;max-width:1408px;padding:0 64px;margin:auto}.brand{display:flex;align-items:center;gap:13px;text-decoration:none;color:var(--ink);font-family:"Songti SC",SimSun,serif;font-size:22px;font-weight:700;letter-spacing:.08em}.brand small{display:block;font-family:"Microsoft YaHei UI",sans-serif;font-size:11px;font-weight:400;letter-spacing:.04em;margin-top:5px;color:var(--muted)}.brand-mark{width:43px;height:48px;display:grid;place-items:center;background:var(--ink);color:var(--paper);border-radius:4px 14px 4px 4px;font-size:27px}.header-actions{display:flex;align-items:center;gap:16px}.private-label{border-left:2px solid var(--sage);padding-left:10px;font-size:12px;color:var(--muted)}main{max-width:1408px;margin:auto;padding:28px 64px 64px}.section-label{font-size:13px;color:var(--sage);margin-bottom:12px}.page-heading{display:flex;justify-content:space-between;align-items:center;gap:24px}.page-heading p{margin-bottom:0}.range-toolbar{display:flex;justify-content:space-between;gap:16px;align-items:center;padding:26px 0 15px}.presets,.date-fields{display:flex;align-items:center;gap:8px}.date-fields{font-size:13px;color:var(--muted)}.date-fields label{display:flex;gap:8px;align-items:center}.status-line{min-height:22px;font-size:12px;margin-bottom:14px}.status-line.error,.form-message.error{color:#a43b3b}.activity-strip{display:grid;grid-template-columns:1.1fr 1fr 1fr 1.2fr 1.2fr;background:white;border:1px solid var(--line);border-radius:8px;padding:30px 0;margin-bottom:28px}.metric{padding:0 24px;border-left:1px solid var(--line)}.metric:first-child{border:0}.metric>span{font-size:13px;display:block}.metric strong{font-size:34px;display:block;font-weight:600;margin:12px 0 6px;letter-spacing:-.035em}.primary-metric strong{color:var(--blue)}.metric small{font-size:11px;color:var(--muted)}.trend-panel,.model-panel{background:white;border:1px solid var(--line);border-radius:8px;padding:30px 32px;margin-bottom:28px}.section-heading{display:flex;justify-content:space-between;align-items:flex-start;gap:24px;margin-bottom:22px}.section-heading p{margin-bottom:0;font-size:13px}.chart-select{display:flex;align-items:center;gap:9px;font-size:12px;color:var(--muted)}.chart-wrap{height:300px;position:relative}.empty-note{text-align:center;padding-top:15px;margin-bottom:0}.data-details{margin-top:20px;font-size:12px;color:var(--muted)}summary{cursor:pointer;width:fit-content;padding:8px 0}.usage-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:28px;margin-bottom:28px}.token-panel,.intensity-panel{background:white;border:1px solid var(--line);border-radius:8px;padding:30px 32px}.token-pair{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:22px}.token-pair span{font-size:12px;color:var(--muted)}.token-pair strong{display:block;font-size:27px;font-weight:600;margin-top:8px}.token-pair>div:first-child{border-left:3px solid var(--blue);padding-left:14px}.token-pair>div:last-child{border-left:3px solid var(--sage);padding-left:14px}.intensity-panel{background:#edf2f6;border-color:#dbe3eb}.intensity-total{display:flex;justify-content:space-between;align-items:baseline;padding:10px 0 22px;border-bottom:1px solid #ced9e5;font-size:13px}.intensity-total strong{font-size:34px;font-weight:600}.intensity-details{margin-bottom:0}.intensity-details>div{display:flex;justify-content:space-between;gap:20px;margin-top:15px;font-size:12px}.intensity-details dt{color:var(--muted)}.intensity-details dd{margin:0;font-weight:600;font-variant-numeric:tabular-nums}.table-scroll{overflow-x:auto}table{width:100%;border-collapse:collapse;font-size:12px;white-space:nowrap;font-variant-numeric:tabular-nums}th{text-align:right;color:var(--muted);font-weight:500;font-size:11px;background:#f7f9fc;padding:12px 14px}td{text-align:right;border-bottom:1px solid #e9eef4;padding:15px 14px}th:first-child,td:first-child{text-align:left}tbody tr:last-child td{border-bottom:none}.model-table td:first-child{font-size:13px;font-weight:600;min-width:160px}.share-cell{min-width:170px}.share-track{height:4px;background:#edf1f6;border-radius:3px;margin-top:7px;overflow:hidden}.share-bar{display:block;height:100%;background:var(--blue)}.share-number{color:var(--muted);margin-left:8px;font-size:11px}.fine-print{font-size:11px;line-height:1.8;color:var(--muted);margin-top:18px;margin-bottom:0}.subtle{font-size:12px;color:var(--muted)}.retention-panel{display:grid;grid-template-columns:260px 1fr;gap:40px;padding:32px 0;border-top:1px solid var(--line);margin-top:10px}.retention-summary strong{font-size:47px;line-height:1.5;color:var(--sage);font-weight:500;display:block;margin:16px 0 8px;letter-spacing:-.04em}.retention-summary p{font-size:12px;max-width:30ch}.retention-list .section-heading{margin-bottom:12px;align-items:center}.retention-scroll{max-height:350px}.retention-scroll th{position:sticky;top:0}.methodology{border-top:1px solid var(--line);padding-top:25px;margin-top:10px;max-width:960px}.methodology h2{font-size:13px}.methodology p{font-size:11px;line-height:1.9;margin-bottom:8px}footer{border-top:1px solid var(--line);max-width:1280px;margin:0 auto;display:flex;justify-content:space-between;padding:24px 0 35px;font-size:11px;color:var(--muted)}.login-layout{min-height:65vh;display:grid;grid-template-columns:1fr;place-items:center;padding:28px 0 65px}.login-form{width:min(100%,440px);margin:0 auto;background:white;border:1px solid var(--line);border-radius:12px;padding:36px}.login-form h1{font-size:25px}.login-form>p{font-size:13px}.login-form label{display:block;font-size:12px;margin:28px 0 8px}.login-form input,.login-form button{width:100%}.login-form button{margin-top:16px}.form-message{min-height:24px;margin:16px 0 0;font-size:12px!important}.login-form .fine-print{font-size:11px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}[hidden]{display:none!important}
@media(min-width:1600px){main{padding-top:40px}.chart-wrap{height:340px}}
@media(max-width:1050px){.masthead{padding:0 30px}main{padding:20px 30px 40px}.metric{padding:0 16px}.metric strong{font-size:29px}.range-toolbar{flex-wrap:wrap}footer{margin:0 30px}.usage-grid{gap:20px}.token-panel,.intensity-panel,.trend-panel,.model-panel{padding:24px}.retention-panel{grid-template-columns:210px 1fr;gap:24px}}
@media(max-width:760px){.masthead{height:83px;padding:0 20px}.brand{font-size:19px}.brand-mark{width:37px;height:43px;font-size:24px}main{padding:16px 20px 32px}h1{font-size:25px}.login-layout{display:block;padding:22px 0}.login-form{padding:26px}.page-heading{gap:12px}.page-heading>button{padding:9px 12px;white-space:nowrap}.activity-strip{grid-template-columns:repeat(3,1fr);padding:22px 0 6px;row-gap:22px}.metric{padding:0 14px}.metric:nth-child(4){border-left:0;grid-column:1/3;border-top:1px solid var(--line);padding-top:18px;padding-bottom:12px}.metric:nth-child(5){border-top:1px solid var(--line);padding-top:18px;padding-bottom:12px}.metric span{font-size:11px}.metric strong{font-size:27px}.metric small{font-size:10px}.section-heading{gap:12px;flex-wrap:wrap}.section-heading p{font-size:12px}.chart-select{margin-left:auto}.trend-panel,.model-panel{padding:20px 16px}.chart-wrap{height:250px}.usage-grid{grid-template-columns:1fr}.range-toolbar{padding-top:20px;gap:15px}.date-fields{width:100%;gap:7px;font-size:11px}.date-fields input{width:125px;padding:7px 4px;font-size:12px}.date-fields button{padding:8px 10px;font-size:12px}.retention-panel{grid-template-columns:1fr;gap:15px}.retention-summary{display:grid;grid-template-columns:1fr 1fr}.retention-summary h2{grid-column:1}.retention-summary strong{grid-column:2;grid-row:1/3;margin:0;text-align:right}.retention-summary p{grid-column:1;max-width:none;margin:0;font-size:11px}.private-label{font-size:11px}.header-actions{gap:5px}.header-actions button{font-size:12px;padding:8px}footer{margin:0 20px;font-size:10px}.token-pair strong{font-size:25px}}
@media(max-width:420px){.date-fields{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr) auto;gap:5px}.date-fields label{min-width:0;gap:4px}.date-fields input{width:100%;min-width:0}.date-fields button{padding:8px}.token-panel,.intensity-panel{padding:20px 16px}.token-table{font-size:11px;white-space:normal}.token-table th,.token-table td{padding:12px 7px}.token-table td:not(:first-child){white-space:nowrap}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}