@font-face{font-family:Instrument;src:url(instrument-sans-regular.woff2) format('woff2');font-weight:400;font-display:swap}@font-face{font-family:Instrument;src:url(instrument-sans-semibold.woff2) format('woff2');font-weight:600 800;font-display:swap}
:root{font-family:Instrument,"PingFang SC","Microsoft YaHei",sans-serif;color:#17283f;background:#f7fbff;font-synthesis:none}*{box-sizing:border-box}body{margin:0}main{max-width:1120px;margin:auto;padding:48px 28px 26px}button,input{font:inherit}button{cursor:pointer}button:focus-visible,input:focus-visible{outline:3px solid #087ff2;outline-offset:4px}.intro{text-align:center;margin-bottom:28px}.eyebrow{color:#087ff2;font-size:11px;letter-spacing:2px;font-weight:600}.intro h1{font-size:clamp(25px,3vw,38px);letter-spacing:-1px;margin:12px 0}.intro p{font-size:15px;color:#65758c;margin:0}.chapters{display:flex;justify-content:center;gap:10px;margin:0 0 24px}.chapters button{display:flex;align-items:center;gap:10px;border:1px solid #dce8f5;border-radius:12px;background:white;color:#446184;padding:12px 18px;font-size:14px;transition:background .2s,border-color .2s}.chapters button[aria-pressed=true]{background:#e9f4ff;border-color:#91c9ff;color:#006dd5}.chapters button>span{font-size:11px;opacity:.65}.chapters small{font-size:11px;opacity:.65}.stage{position:relative;isolation:isolate;overflow:hidden;padding:48px 68px 22px;border:1px solid #dae9f6;border-radius:28px;background:linear-gradient(145deg,#eef7ff,#edf4ff 55%,#f0faff);box-shadow:0 22px 64px #2450860a}.ambient{position:absolute;z-index:-1;width:360px;height:360px;border-radius:50%;filter:blur(42px);opacity:.24}.one{background:#acdfff;top:-220px;right:-120px}.two{background:#c4c8ff;bottom:-240px;left:-140px}.panel{border:1px solid white;border-radius:24px;background:#fcfdff;box-shadow:0 20px 55px #214c7a12;padding:28px 32px 20px;transform-origin:center;will-change:transform}.brand{display:flex;align-items:center;gap:13px;margin-bottom:26px}.mark{display:grid;place-items:center;width:44px;height:44px;border-radius:14px;font-size:30px;background:linear-gradient(135deg,#0084ff,#7162e9);color:white;box-shadow:0 5px 15px #0084ff25}.brand h2{font-size:22px;letter-spacing:-.6px;margin:0;font-weight:600}.brand p{font-size:12px;color:#65758c;margin:4px 0 0}.demo-badge{margin-left:auto;font-size:9px;letter-spacing:2px;border:1px solid #e0eaf6;border-radius:7px;color:#8496aa;padding:6px 8px}.question{position:relative;display:flex;align-items:center;min-height:76px;padding:16px 74px 16px 20px;background:white;border:1px solid #a7c9f1;border-radius:15px;box-shadow:0 0 0 4px #0084ff06;font-size:clamp(16px,2vw,23px);letter-spacing:-.3px}.caret{height:1.1em;width:2px;background:#087ff2;flex-shrink:0;margin-left:3px}.send{position:absolute;right:12px;top:50%;margin-top:-23px;display:grid;place-items:center;width:46px;height:46px;background:#087ff2;color:white;border-radius:12px}.send svg{width:26px;height:26px}.context{display:flex;gap:8px;flex-wrap:wrap;margin:16px 0 26px;font-size:10px;color:#69809b}.context span{border:1px solid #e0e9f3;background:#f4f8fe;border-radius:7px;padding:6px 9px}.answer{position:relative;min-height:246px}.waiting{position:absolute;top:76px;left:50%;display:flex;gap:6px;transform:translateX(-50%)}.waiting i{width:6px;height:6px;border-radius:50%;background:#4799ed}.result-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.result-heading .eyebrow{font-size:9px;letter-spacing:1.6px}.result-heading h3{font-size:24px;letter-spacing:-.5px;margin:6px 0 0;font-weight:600}.complete{background:#e7f6ee;color:#249466;border-radius:50%;width:26px;height:26px;display:grid;place-items:center;font-size:13px}.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.card{border:1px solid #e0edfa;border-radius:14px;background:linear-gradient(150deg,#eef7ff,#f7fbff);padding:20px 18px}.card-label{font-size:12px;color:#65758c;min-height:18px}.card-value{font-size:clamp(21px,2.6vw,32px);font-weight:600;letter-spacing:-1px;white-space:nowrap;margin-top:13px}.card-detail{font-size:10px;color:#69809b;margin-top:9px}.result-note{font-size:11px;color:#65758c;margin:17px 0 0}.panel-footer{display:flex;justify-content:space-between;gap:8px;font-size:9px;color:#8496aa;margin-top:22px;padding-top:16px;border-top:1px solid #edf1f6}.panel-footer span:last-child{letter-spacing:1px}.stage-caption{display:flex;align-items:center;gap:7px;font-size:10px;color:#6d8299;margin-top:21px}.stage-caption>span:last-child{margin-left:auto;letter-spacing:1px}.dot{width:5px;height:5px;background:#4799ed;border-radius:50%}.controls{display:flex;align-items:center;gap:14px;margin:22px 0 0}.controls button{border:1px solid #d5e6f6;border-radius:10px;background:white;color:#446184;padding:10px 16px;white-space:nowrap;font-size:13px}.controls #toggle{min-width:104px;background:#087ff2;color:white;border-color:#087ff2}.controls input{min-width:40px;flex:1;accent-color:#087ff2;cursor:pointer}.controls output{font-variant-numeric:tabular-nums;white-space:nowrap;font-size:12px;color:#65758c}.disclosure{color:#8496aa;font-size:11px;text-align:center;margin-top:22px;line-height:1.7}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}
@media(max-width:680px){main{padding:28px 14px 18px}.intro{margin-bottom:24px}.intro p{font-size:13px;line-height:1.8}.chapters{gap:6px}.chapters button{padding:10px;gap:5px;font-size:12px}.chapters small{display:none}.stage{padding:24px 12px 16px;border-radius:20px}.panel{padding:20px 15px 16px;border-radius:18px}.brand{margin-bottom:22px}.brand h2{font-size:20px}.brand p{font-size:10px}.demo-badge{display:none}.question{min-height:78px;padding-left:12px;padding-right:52px;font-size:16px}.send{width:34px;height:36px;right:9px;margin-top:-18px;border-radius:9px}.send svg{width:21px}.context{font-size:9px;margin:15px 0 22px;gap:5px}.context span{padding:5px 6px}.answer{min-height:318px}.result-heading{margin-bottom:15px}.result-heading h3{font-size:22px}.cards{grid-template-columns:1fr;gap:8px}.card{padding:12px 14px;display:grid;grid-template-columns:1fr auto;gap:4px 8px;align-items:center}.card-label{font-size:11px;min-height:0}.card-value{margin:0;font-size:23px;grid-column:2;grid-row:1/3}.card-detail{margin:0;font-size:9px}.result-note{margin-top:12px;font-size:10px}.panel-footer{font-size:8px;margin-top:12px}.panel-footer span:last-child{letter-spacing:.4px}.stage-caption{font-size:9px}.controls{gap:8px;flex-wrap:wrap;margin-top:16px}.controls button{padding:10px 12px}.controls input{order:3;flex-basis:100%}.controls output{margin-left:auto}.disclosure{font-size:10px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}.panel{will-change:auto}}

html.embed, html.embed body { background: transparent; }
html.embed main { padding: 12px 2px 4px; }
html.embed .intro { display: none; }
html.embed .disclosure { margin: 16px 12px 0; }
html.embed .stage { box-shadow: none; }

html.compact .stage { padding: 18px 12px 14px; border-radius: 20px; }
html.compact .panel { padding: 18px 16px 14px; border-radius: 16px; }
html.compact .chapters { gap: 6px; margin-bottom: 12px; }
html.compact .chapters button { padding: 9px 10px; gap: 5px; font-size: 11px; }
html.compact .chapters small { display: none; }
html.compact .brand { margin-bottom: 16px; }
html.compact .brand h2 { font-size: 20px; }
html.compact .question { min-height: 66px; font-size: 16px; }
html.compact .context { margin: 12px 0 16px; }
html.compact .answer { min-height: 230px; }
html.compact .result-heading { margin-bottom: 12px; }
html.compact .result-heading h3 { font-size: 21px; }
html.compact .cards { grid-template-columns: 1fr; gap: 6px; }
html.compact .card { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 3px 8px; padding: 9px 12px; }
html.compact .card-label { min-height: 0; font-size: 11px; }
html.compact .card-value { grid-column: 2; grid-row: 1 / 3; margin: 0; font-size: 22px; }
html.compact .card-detail { margin: 0; font-size: 9px; }
html.compact .panel-footer { margin-top: 12px; padding-top: 12px; }
html.compact .stage-caption { margin-top: 12px; }
html.compact .controls { margin-top: 12px; }
@media (min-width: 520px) {
    html.compact .answer { min-height: 180px; }
    html.compact .cards { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    html.compact .card { display: block; padding: 12px 10px; }
    html.compact .card-label { min-height: 28px; }
    html.compact .card-value { margin-top: 8px; font-size: 21px; }
    html.compact .card-detail { margin-top: 6px; }
}

.controls[hidden] { display: none; }