:root{--hb-bg:#f7f7f4;--hb-surface:#fff;--hb-ink:#20251f;--hb-muted:#677064;--hb-line:#e0e4dd;--hb-accent:#31553a;--hb-soft:#edf2e9;--hb-error:#9e3535}*{box-sizing:border-box}body{background:var(--hb-bg);color:var(--hb-ink);margin:0;font-family:Arial,PingFang TC,Noto Sans TC,sans-serif;font-size:14px;line-height:1.65}a{color:var(--hb-accent);text-underline-offset:3px}button,input,textarea,select{font:inherit}button,.button{cursor:pointer;border:1px solid var(--hb-line);background:var(--hb-surface);color:var(--hb-ink);border-radius:7px;padding:9px 15px;text-decoration:none;display:inline-block}button:hover,.button:hover{border-color:var(--hb-muted)}button:disabled{opacity:.55;cursor:wait}.primary{background:var(--hb-accent);color:#fff;border-color:var(--hb-accent)}.quiet{background:0 0;border:0}.top{border-bottom:1px solid var(--hb-line);background:var(--hb-surface);justify-content:space-between;align-items:center;gap:20px;padding:18px 32px;display:flex}.wordmark{letter-spacing:-1px;font-size:25px;font-weight:800;text-decoration:none}.wordmark span{letter-spacing:1.5px;color:var(--hb-muted);margin-left:12px;font-size:11px;font-weight:500}.header-tools{align-items:center;gap:10px;display:flex}.header-tools select{border:1px solid var(--hb-line);background:var(--hb-surface);border-radius:5px;max-width:220px;padding:6px}main{max-width:1000px;margin:auto;padding:30px 32px 64px}.page-heading{padding:12px 0 22px}h1{letter-spacing:-1px;margin:10px 0;font-size:32px;font-weight:500;line-height:1.3}h2{margin:0 0 18px;font-size:19px;font-weight:500}h3{margin:24px 0 8px;font-size:13px;font-weight:600}p{margin:8px 0 16px}.page-heading p,.muted{color:var(--hb-muted)}.eyebrow{letter-spacing:1px;color:var(--hb-muted);font-size:11px}.tabs{border-bottom:1px solid var(--hb-line);gap:26px;margin-bottom:26px;display:flex}.tabs button{color:var(--hb-muted);background:0 0;border:0;border-radius:0;padding:10px 1px 13px}.tabs .active{color:var(--hb-ink);border-bottom:2px solid var(--hb-accent)}.dot{background:var(--hb-accent);vertical-align:middle;border-radius:50%;width:5px;height:5px;margin-left:8px;display:inline-block}.panel{border:1px solid var(--hb-line);background:var(--hb-surface);border-radius:10px;margin:20px 0;padding:25px}.panel summary{cursor:pointer;font-size:17px}.fields{grid-template-columns:1fr 1fr;gap:20px;display:grid}label{flex-direction:column;gap:7px;margin-top:18px;font-size:13px;display:flex}input,textarea{border:1px solid var(--hb-line);background:var(--hb-surface);width:100%;color:var(--hb-ink);border-radius:6px;padding:10px}textarea{resize:vertical}input:focus,textarea:focus,button:focus-visible,select:focus-visible{outline:2px solid var(--hb-accent);outline-offset:2px}.hint{color:var(--hb-muted);font-size:12px;line-height:1.6}.run-footer{justify-content:space-between;align-items:center;gap:30px;margin-top:20px;display:flex}.run-footer p{max-width:550px;margin:0}.run-footer button{flex-shrink:0}.run-heading{align-items:center;gap:15px;margin:32px 0 20px;display:flex}.run-heading time{color:var(--hb-muted);font-size:12px}.run-heading button{margin-left:auto}.status{border:1px solid var(--hb-line);border-radius:20px;padding:2px 10px;font-size:11px}.status.complete{background:var(--hb-soft);color:var(--hb-accent)}.stats{border-top:1px solid var(--hb-line);border-bottom:1px solid var(--hb-line);gap:0;padding:22px 0;display:flex}.stats>div{border-right:1px solid var(--hb-line);flex:1;padding:0 20px}.stats>div:first-child{padding-left:0}.stats>div:last-child{border-right:0}.stats span{color:var(--hb-muted);font-size:12px;display:block}.stats strong{margin-top:7px;font-size:30px;font-weight:400;display:block}.provenance{margin-top:14px}.comparison{border-bottom:1px solid var(--hb-line);margin-bottom:28px;padding:0 0 20px}.comparison h3{margin-top:22px}.comparison p{color:var(--hb-muted);margin-bottom:8px;font-size:12px}.comparison strong{color:var(--hb-ink);margin-left:8px}.arrow{padding:0 15px}.evidence{margin-top:30px}.answer{border-top:1px solid var(--hb-line);background:0 0}.answer:last-child{border-bottom:1px solid var(--hb-line)}.answer summary{cursor:pointer;justify-content:space-between;gap:20px;padding:17px 0;display:flex}.answer summary small{color:var(--hb-muted);white-space:nowrap;font-size:11px}.answer-body{border-left:2px solid var(--hb-line);margin:5px 0 24px;padding:0 20px}.answer-body p{white-space:pre-wrap;overflow-wrap:anywhere}.answer-body ul{padding-left:20px}.proposal h2{margin-top:12px;font-size:26px}.proposal pre{font:inherit;white-space:pre-wrap;overflow-wrap:anywhere;background:var(--hb-bg);border-left:3px solid var(--hb-accent);padding:22px;line-height:1.9}.actions{flex-wrap:wrap;gap:10px;margin-top:22px;display:flex}.history{margin-top:44px}.history-row{text-align:left;border:0;border-top:1px solid var(--hb-line);background:0 0;border-radius:0;justify-content:space-between;gap:20px;width:100%;padding:13px 10px;font-size:12px;display:flex}.history-row.selected{background:var(--hb-soft)}.empty{color:var(--hb-muted);text-align:center;padding:60px 15px}.sample{color:#75663a;background:#f1eddc;border-radius:6px;padding:10px 16px;font-size:12px}.error{color:var(--hb-error);background:#fff3f3;border:1px solid #e3bcbc;border-radius:6px;margin:15px 0;padding:12px 16px}.help-steps{padding-left:22px}.help-steps li{padding:12px 0}footer{border-top:1px solid var(--hb-line);max-width:936px;color:var(--hb-muted);letter-spacing:1px;justify-content:space-between;margin:0 auto 28px;padding-top:18px;font-size:10px;display:flex}.welcome{max-width:700px;margin:14vh auto}.welcome h1{margin:18px 0}.welcome p{color:var(--hb-muted)}@media (max-width:640px){.top{flex-wrap:wrap;padding:14px 18px}.header-tools{gap:6px;width:100%}.header-tools select{max-width:45%;font-size:12px}.header-tools button{margin-left:auto}main{padding:20px 18px 45px}h1{font-size:28px}.panel{padding:18px}.fields{grid-template-columns:1fr;gap:0}.run-footer{flex-direction:column;align-items:flex-start;gap:14px}.stats>div{padding:0 8px}.stats span{font-size:10px}.stats strong{font-size:25px}.run-heading{flex-wrap:wrap;gap:8px}.run-heading button{font-size:11px}.history-row{gap:8px;font-size:10px}.answer summary{gap:10px}.proposal pre{padding:15px}footer{margin:0 18px 20px}.welcome{margin:10vh auto}.tabs{gap:23px}}