:root{--ink:#183e36;--muted:#688078;--green:#23745d;--green-dark:#195a48;--line:#dce6dd;--paper:#fffefa;--wash:#f2f5ee;--orange:#b67132;--danger:#994b3f;font-family:Inter,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--wash);font-synthesis:none}*{box-sizing:border-box}body{margin:0}button,input{font:inherit}button,a,input{-webkit-tap-highlight-color:transparent}button{cursor:pointer;border:0;border-radius:10px;font-weight:600;padding:12px 18px;transition:background .15s,transform .15s}button:hover:not(:disabled){transform:translateY(-1px)}button:disabled{opacity:.5;cursor:wait}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #c99451;outline-offset:3px}button.primary{background:var(--green);color:white}button.primary:hover:not(:disabled){background:var(--green-dark)}button.secondary{background:#eaf0e8;color:var(--green-dark);border:1px solid #d8e2d4}.quiet{background:transparent;color:var(--green);padding:9px 10px}.danger{background:#f9eeea;color:var(--danger);width:100%;font-size:13px}.full{width:100%;display:flex;justify-content:space-between}.small{font-size:12px;padding:6px}.topbar{height:86px;padding:0 max(28px,calc((100% - 1180px)/2));display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:20px;background:#f7f8f2}.brand{display:flex;gap:12px;align-items:center;color:var(--ink);text-decoration:none;font-size:23px;font-weight:750;white-space:nowrap}.brand small{display:block;font-size:9px;letter-spacing:2.5px;margin-top:2px;color:var(--muted)}.brand-icon{display:grid;place-items:center;background:var(--green);color:white;border-radius:13px;width:42px;height:42px;font-size:31px;font-weight:400}.top-actions{display:flex;align-items:center;gap:14px;font-size:13px}.mode-pill{display:inline-flex;align-items:center;gap:8px;border:1px solid #d4dfce;background:#edf2e5;border-radius:99px;padding:7px 11px;font-size:12px;color:#486343}.dot{width:6px;height:6px;border-radius:50%;background:#789344}main{max-width:1180px;margin:auto;padding:0 28px 60px}.hero{display:flex;justify-content:space-between;gap:40px;align-items:center;padding:52px 0 35px}.eyebrow{font-size:10px;letter-spacing:2px;color:var(--green);font-weight:700;margin:0 0 16px}h1{font-size:clamp(30px,3.5vw,45px);letter-spacing:-1.3px;line-height:1.32;margin:0;font-weight:650}.hero-copy{font-size:14px;line-height:1.8;color:var(--muted);margin:18px 0 0}.environment{min-width:245px;border-left:2px solid #c8d7bd;padding:8px 0 8px 24px}.label{color:var(--muted);font-size:11px;letter-spacing:1px;display:block;margin-bottom:10px}.environment strong{display:block;font-size:18px;font-weight:600}.environment p{font-size:12px;line-height:1.95;color:var(--muted);margin-bottom:0}.environment b{font-weight:500;color:var(--orange)}.notice{border:1px solid #dce4d5;border-radius:10px;background:#eaf0e2;padding:13px 17px;font-size:13px;line-height:1.7;margin-bottom:27px}.notice.error{background:#fcf0e9;border-color:#edcfbd;color:#8b4c33}.auth-layout{display:grid;grid-template-columns:minmax(280px,450px) 1fr;gap:80px;align-items:center;padding:5px 0 35px}.card{border:1px solid var(--line);border-radius:18px;background:var(--paper);padding:27px;box-shadow:0 5px 15px #183e3603}.auth-card{padding:34px}h2{font-size:25px;line-height:1.45;margin:0 0 8px;font-weight:600}h3{font-size:17px;font-weight:650;margin:0}.muted{font-size:13px;line-height:1.8;color:var(--muted);margin:10px 0 16px}.tabs{display:flex;gap:5px;background:#eef1e9;border-radius:10px;padding:4px;margin:23px 0}.tabs button{flex:1;background:transparent;border-radius:7px;color:var(--muted);font-size:13px;padding:10px 7px}.tabs button.selected{background:#fffefa;color:var(--green);box-shadow:0 2px 5px #183e360c}label{display:block;font-size:13px;font-weight:600;margin:18px 0 8px}input{display:block;width:100%;background:#fff;border:1px solid #d6dfd2;border-radius:9px;padding:12px 13px;color:var(--ink);font-size:14px;min-width:0}input::placeholder{color:#97a59a}form button[type=submit]{margin-top:22px}.hint,.footnote{display:block;color:var(--muted);font-size:11px;line-height:1.7;margin-top:8px}.footnote{margin:19px 0 0;text-align:center}.intro{max-width:430px}.intro h2{font-size:32px;line-height:1.5;font-weight:500}.intro-list{list-style:none;padding:0;margin:27px 0}.intro-list li{display:flex;gap:18px;margin:25px 0}.intro-list li>span{color:#9bac90;border-bottom:1px solid #cdd9c7;align-self:flex-start;padding-bottom:8px;font-size:13px;font-weight:650}.intro-list strong{font-size:14px;font-weight:600}.intro-list p{font-size:12px;line-height:1.8;color:var(--muted);margin:7px 0 0}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin:35px 0 22px}.section-heading .eyebrow{margin-bottom:7px}.progress{display:flex;list-style:none;padding:0;margin:0 0 28px;border-bottom:1px solid var(--line)}.progress li{flex:1;padding:0 0 18px;font-size:13px;color:#849183;display:flex;align-items:center;gap:10px}.progress li span{display:grid;place-items:center;background:#e3e9dd;border-radius:50%;width:25px;height:25px;font-size:11px}.progress li.active{color:var(--green);font-weight:650}.progress li.active span{background:var(--green);color:white}.workspace-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:22px}.flow-column,.side-column{display:flex;flex-direction:column;gap:20px}.card-heading{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:16px}.badge{font-size:10px;background:#edf2e7;border:1px solid #dde6d6;color:#637455;padding:5px 8px;border-radius:6px;white-space:nowrap}.warning{font-size:12px;color:#946435;line-height:1.75;background:#f8f2e5;border-radius:8px;padding:12px;margin-bottom:18px}.button-row{display:flex;gap:10px;flex-wrap:wrap}.summary>strong{display:block;overflow-wrap:anywhere;font-size:17px;font-weight:600}.summary dl{font-size:12px;margin:24px 0 20px}.summary dl>div{display:flex;justify-content:space-between;gap:15px;padding:10px 0;border-bottom:1px solid #edf0e7}.summary dt{color:var(--muted)}.summary dd{margin:0}.summary .danger{margin-top:15px}.challenge{margin-top:20px;background:#f5f6ef;border-radius:10px;padding:16px}.challenge img{max-width:100%;object-fit:contain;background:white}.step-input{display:flex;align-items:center;gap:12px;max-width:280px}.step-input input{font-size:28px;font-weight:600;padding:12px 16px}.step-input span{font-size:14px;color:var(--muted)}.result{font-size:13px;line-height:1.8;padding:14px;background:#edf2e7;border-radius:9px;overflow-wrap:anywhere}.history-list{list-style:none;padding:0;margin:0}.history-list li{border-bottom:1px solid #e7ecdf;padding:14px 0}.history-list strong{font-size:19px}.history-list .record-heading{display:flex;align-items:center;justify-content:space-between;gap:6px;font-size:11px;color:var(--muted)}.history-list p{font-size:11px;line-height:1.7;color:var(--muted);margin:6px 0}.history-list .status{color:var(--green);font-weight:600}.qr-label{display:block;font-size:12px;color:var(--orange);margin:10px 0}#qr-panel{text-align:center;margin:20px 0 25px;padding:20px;border:1px dashed #d6decf;border-radius:12px;background:#fafaf5}#qr-canvas{max-width:100%;height:auto;background:white}#qr-content{overflow-wrap:anywhere}footer{max-width:1180px;margin:auto;padding:24px 28px 35px;border-top:1px solid var(--line);display:flex;justify-content:space-between;font-size:10px;letter-spacing:.3px;color:#80917f}[hidden]{display:none!important}@media(max-width:800px){.auth-layout{gap:30px;grid-template-columns:minmax(270px,1fr) 1fr}.workspace-grid{grid-template-columns:minmax(0,1fr) 255px}.card{padding:22px}.hero{gap:20px}.environment{min-width:205px;padding-left:18px}.topbar{padding:0 24px}}@media(max-width:640px){.topbar{height:73px;padding:0 20px}.top-actions{gap:6px}.brand{font-size:20px}.brand-icon{width:36px;height:36px;font-size:27px}#user-name{max-width:65px;overflow:hidden;text-overflow:ellipsis}.mode-pill{font-size:10px;padding:6px 8px}.hero{padding:32px 0 25px;display:block}.hero h1{font-size:33px}.hero-copy{font-size:12px}.environment{margin-top:25px;min-width:0;display:block;padding:0 0 0 15px}.environment .label{display:none}.environment strong{font-size:13px}.environment p{font-size:11px;margin-top:6px}.environment br{display:none}.environment b{display:block}.auth-layout,.workspace-grid{grid-template-columns:1fr;gap:23px}.auth-card,.card{padding:24px}.intro{padding:8px}.intro h2{font-size:25px}.intro h2 br{display:none}main{padding:0 18px 36px}.progress li{font-size:10px;gap:5px}.progress li span{width:20px;height:20px;font-size:10px}.progress{margin-bottom:20px}.section-heading h2{font-size:23px}.section-heading button{font-size:12px;padding:10px 13px}.button-row button{font-size:12px;padding:11px 12px}footer{padding:22px 20px;gap:12px;flex-wrap:wrap}}
select{display:block;width:100%;background:#fff;border:1px solid #d6dfd2;border-radius:9px;padding:12px 13px;color:var(--ink);font-size:14px;min-width:0}.offset-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}@media(max-width:640px){.offset-grid{grid-template-columns:1fr}}

.connect-heading{display:flex;align-items:baseline;justify-content:space-between;flex-wrap:wrap;gap:8px 14px;margin:22px 0 12px}.connect-heading h4{margin:0;font-size:15px;font-weight:650}.text-link{background:transparent;color:var(--green);font-size:12px;padding:8px 0;text-decoration:underline;text-underline-offset:3px;min-height:36px}.text-link:disabled{cursor:wait}.connect-heading .text-link{flex:0 0 auto}

/* Four-step transitions are finite and browser-local; no animation timers. */
.flow-header{position:sticky;top:0;z-index:2;background:var(--wash);padding:10px 0 12px}.flow-header .progress{margin:0 0 8px}.progress li{padding-bottom:12px;min-width:0}.progress li button{display:flex;align-items:center;gap:8px;background:transparent;color:inherit;padding:6px 0;font-size:inherit;font-weight:inherit;text-align:left;min-height:38px}.progress li.current{color:var(--green);font-weight:700}.progress li.current span{outline:2px solid var(--green);outline-offset:2px}.progress li button:disabled{cursor:default;opacity:.6}.flow-status{font-size:12px;line-height:1.8;color:var(--green);margin:0;overflow-wrap:anywhere}.flow-viewport{position:relative;overflow:hidden;min-width:0}.flow-panel{width:100%;min-width:0}.flow-panel.flow-leaving{position:absolute;top:0;left:0;pointer-events:none}.flow-entering{animation:flow-enter-forward .28s ease-out both}.flow-leaving{animation:flow-leave-forward .28s ease-out both}.flow-panel[data-direction=backward].flow-entering{animation-name:flow-enter-backward}.flow-panel[data-direction=backward].flow-leaving{animation-name:flow-leave-backward}
@keyframes flow-enter-forward{from{opacity:0;transform:translateX(100%)}to{opacity:1;transform:translateX(0)}}@keyframes flow-leave-forward{from{opacity:1;transform:translateX(0)}to{opacity:0;transform:translateX(-100%)}}@keyframes flow-enter-backward{from{opacity:0;transform:translateX(-100%)}to{opacity:1;transform:translateX(0)}}@keyframes flow-leave-backward{from{opacity:1;transform:translateX(0)}to{opacity:0;transform:translateX(100%)}}
.flow-controls{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:10px}.flow-controls .hint{text-align:center;margin:0}.flow-column{min-width:0;gap:12px}.side-column{min-width:0}.upload-tabs{margin:0 0 22px}.flow-panel .notice{margin:16px 0 0}.badge,.tag{transition:background-color .18s,color .18s,border-color .18s}button:active:not(:disabled){transform:scale(.98)}
@media(max-width:640px){.flow-header{padding-top:8px}.progress li button{font-size:10px;gap:5px;min-height:42px}.flow-status{font-size:11px}.flow-controls button{padding:11px 12px;min-height:42px}.flow-controls .hint{font-size:10px}input,select{font-size:16px}.workspace-grid>.side-column{grid-row:2}.flow-panel{padding:20px}.flow-panel h3{font-size:16px}.flow-panel .text-link{min-height:42px}}
@media(prefers-reduced-motion:reduce){.flow-entering,.flow-leaving{animation:none}button,.badge,.tag{transition:none}button:hover:not(:disabled),button:active:not(:disabled){transform:none}}
.motion-paused .flow-entering,.motion-paused .flow-leaving{animation:none}

@media(max-width:380px){.topbar{padding:0 14px;gap:8px}.top-actions{min-width:0}#user-name{max-width:44px}}

/* Mobile workbench: one operation and one scroll surface; desktop stays expanded. */
@media(max-width:640px){
 .top-actions{min-width:0}.top-actions .mode-pill{white-space:nowrap;flex-shrink:0}#logout{white-space:nowrap;flex-shrink:0;padding:8px 6px;min-height:42px}
 .workspace-authenticated{overflow-anchor:none}.workspace-authenticated>.hero{display:none}
 .workspace-authenticated>.notice{margin:12px 0 0;padding:9px 12px;font-size:12px}.workspace-authenticated>.notice.inline-notice{display:none}
 .workspace-authenticated .section-heading{margin:16px 0 4px}.workspace-authenticated .section-heading .eyebrow{display:none}.workspace-authenticated .section-heading h2{font-size:20px;margin:0}
 .flow-header{padding:8px 0 10px}.flow-header .progress{margin-bottom:5px}.progress li{padding-bottom:7px}.flow-status{line-height:1.6}
 .workspace-grid{gap:14px}.flow-column,.side-column{gap:10px}.flow-viewport{overflow-anchor:none}.flow-panel .card-heading{margin-bottom:10px}.flow-panel .muted{margin:8px 0 12px}.flow-panel .warning{padding:9px 11px;margin:8px 0 12px}.flow-panel label{margin-top:14px}.flow-panel form button[type=submit]{margin-top:16px}.flow-panel .notice{padding:9px 11px;font-size:12px;margin-top:12px}
 #qr-panel{padding:12px;margin:12px 0 16px}#qr-canvas{width:184px;max-width:100%}.qr-label{font-size:11px;margin:8px 0 0}#qr-content{display:none}
 .button-row{gap:8px}.button-row button{flex:1;min-height:42px}.flow-guidance,#flow-guidance{margin:0;font-size:11px}
 .workspace-authenticated+footer{padding:12px 18px 18px}
}

/* One work area; records belong to the upload step, not a permanent sidebar. */
.workspace-grid{grid-template-columns:minmax(0,1fr);max-width:820px;margin:0 auto}.range-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.history-section{margin-top:24px;padding-top:20px;border-top:1px solid var(--line)}.history-section .card-heading{margin-bottom:4px}.history-section .history-list strong{font-size:17px}.history-section .history-list li{padding:10px 0}

.binding-actions{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:12px}.binding-actions .text-link{font-size:12px;white-space:nowrap}
@media(max-width:640px){.binding-actions{grid-template-columns:1fr;gap:4px}.binding-actions .primary{width:100%;min-height:44px}.binding-actions .text-link{justify-self:end}}