/* 小挑战：沿用研究室字体与配色，关卡只显示进度，结束后统一反馈。 */
.challenge-feature{display:grid;grid-template-columns:1.2fr 1fr;gap:48px;align-items:center;border:1px solid var(--line);border-radius:18px;background:linear-gradient(120deg,var(--chip),var(--panel) 70%);padding:38px 42px;margin:0 0 44px;overflow:hidden}
.challenge-feature h2{font-size:30px}.challenge-feature p:not(.eyebrow){font-size:13px;color:var(--muted);margin-top:12px;line-height:1.9}
.challenge-feature .meta{margin-top:16px}.challenge-feature .btn{margin-top:24px}.challenge-feature .chip{background:var(--panel);border:1px solid var(--line)}
.feature-dialogue{display:grid;gap:14px;max-width:330px;width:100%;justify-self:center;transform:rotate(-3deg)}
.dialogue-you,.dialogue-ai,.dialogue-decision{border:1px solid var(--line);border-radius:13px;padding:18px 24px;background:var(--panel);box-shadow:var(--shadow);font-size:16px}
.dialogue-you{justify-self:start}.dialogue-ai{justify-self:end;background:var(--accent);color:var(--accent-ink);min-width:230px}
.dialogue-ai small{font-size:10px;letter-spacing:1px;opacity:.8}.challenge-feature .dialogue-ai p{font-size:18px;color:inherit;margin-top:6px}
.dialogue-decision{justify-self:start;font-size:12px;border-style:dashed;background:transparent;box-shadow:none;color:var(--accent)}
body.challenge{background:var(--paper)}body.challenge::before{display:none}
body.challenge .lab-main{max-width:850px;padding-bottom:48px}
.challenge .eyebrow{font-size:10px;letter-spacing:1.8px;color:var(--muted)}
.challenge .card,.challenge .q-card{border-radius:18px}
.challenge-intro{position:relative;text-align:center;padding:40px 44px!important;overflow:hidden}
.challenge-intro::before{content:'';position:absolute;top:-150px;right:-160px;width:350px;height:350px;border:1px solid var(--line);border-radius:50%;pointer-events:none}
.challenge-emblem{display:grid;place-items:center;width:94px;height:94px;margin:26px auto;border:1px solid var(--line);border-radius:28px;background:var(--chip);font:27px var(--serif);color:var(--accent);transform:rotate(-5deg)}
.challenge-intro .title{font-size:34px;margin-bottom:18px}.challenge-intro .prose{text-align:left;font-size:14px;max-width:560px;margin:auto}
.challenge-itinerary{display:grid;grid-template-columns:repeat(3,1fr);padding:22px 0;margin:26px 0 20px;border-block:1px solid var(--line);list-style:none;text-align:left;gap:20px}
.challenge-itinerary li>span{display:block;font-size:11px;color:var(--muted);margin-bottom:8px}.challenge-itinerary strong{font-weight:500;font-size:14px}.challenge-itinerary p{font-size:11px;line-height:1.8;color:var(--muted);margin-top:5px}
.challenge-intro .actions{justify-content:space-between}.challenge .btn{border-radius:9px}
.challenge-arena{gap:22px}.challenge-head{padding:12px 6px 0}.challenge-topline{display:flex;justify-content:space-between;gap:12px;margin-bottom:32px;font-size:10px;color:var(--muted)}
.challenge-head .eyebrow{color:var(--accent);letter-spacing:1px}.challenge-head .title{font-size:29px;margin:8px 0 23px;line-height:1.55}
.challenge-progress{display:flex;gap:10px}.challenge-progress>span{display:grid;place-items:center;height:35px;flex:1;max-width:90px;border:1px solid var(--line);background:var(--panel);border-radius:7px;color:var(--muted);font-size:11px;font-variant-numeric:tabular-nums}
.challenge-progress>span.current{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}.challenge-progress>span.done{background:var(--chip);border-color:var(--line);color:var(--accent)}
.challenge-question{padding:28px 34px 30px}.decision-phases{list-style:none;display:flex;gap:8px;padding:0 0 22px;margin:0 0 24px;border-bottom:1px solid var(--line)}
.decision-phases li{display:flex;align-items:center;gap:7px;flex:1;font-size:11px;color:var(--muted)}.decision-phases li>span{font-size:9px;border:1px solid var(--line);border-radius:50%;height:22px;width:22px;display:grid;place-items:center;flex-shrink:0}
.decision-phases li.current{color:var(--accent)}.decision-phases li.current>span{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.challenge .q-card .question{font-size:21px;line-height:1.85;margin-bottom:24px;font-family:var(--serif)}
.challenge .options{counter-reset:choices}.challenge .options .option::before{counter-increment:choices;content:counter(choices,upper-alpha);display:grid;place-items:center;flex-shrink:0;width:27px;height:27px;border-radius:7px;background:var(--paper);color:var(--muted);font-size:11px}
.challenge .q-card .option{min-height:58px;gap:12px;padding:12px 16px}.challenge .q-card .option input{order:2;margin-left:auto}.challenge .q-card .option span{flex:1}
.challenge .q-card .option:has(input:checked)::before{background:var(--accent);color:var(--accent-ink)}
.challenge .q-card .advice{position:relative;margin-top:22px;border-left:0;padding:22px 24px;background:var(--chip);border-radius:12px}
.challenge .advice .who{letter-spacing:.5px;margin-bottom:10px}.challenge .advice .answer{font-size:21px;color:var(--accent)}
.challenge .locked{border:1px dashed var(--line);background:transparent;font-size:12px;line-height:1.8}
.challenge .q-card .confidence{padding-top:20px}.challenge .q-card .actions{margin-top:24px;padding-top:22px}
.challenge .q-card .btn{min-width:190px;min-height:48px}.challenge-footnote{font-size:11px;color:var(--muted);text-align:center;line-height:1.9;padding:0 16px}
.warmup-finish{text-align:center;padding:12px 0 4px}.warmup-finish .challenge-emblem{width:76px;height:76px;margin:12px auto 24px}.warmup-finish h2{font:25px/1.6 var(--serif);margin-bottom:14px}.warmup-finish p{font-size:14px;line-height:2}.warmup-finish p+p{margin-top:8px}.warmup-finish .actions{justify-content:center}
.challenge-results{display:grid;gap:20px}.challenge-results h2{font:21px/1.6 var(--serif);margin-bottom:14px}.challenge-results .card{margin:0;padding:28px 32px}
.challenge-results .result-poster{padding:34px;background:linear-gradient(135deg,var(--panel) 45%,var(--chip));position:relative;overflow:hidden}
.result-poster .title{margin:14px 0 28px;font-size:30px}.result-scoreline{display:flex;align-items:center;justify-content:space-around;gap:12px;padding:24px 0 26px;border-block:1px solid var(--line)}
.result-scoreline>div{display:grid;gap:8px}.result-scoreline>div>span{font-size:12px;color:var(--muted)}.result-scoreline strong{font-size:64px;font-weight:400;font-family:var(--serif);font-variant-numeric:tabular-nums;line-height:1.2}
.result-scoreline strong small{font-size:21px;color:var(--muted)}.score-arrow{font-size:28px;color:var(--muted)}
.result-decisions{display:grid;grid-template-columns:repeat(3,1fr);margin:24px 0;gap:12px}.result-decisions>div{display:flex;align-items:baseline;justify-content:center;gap:7px}.result-decisions strong{font-size:23px;font-weight:400}.result-decisions span{font-size:11px;color:var(--muted)}
.result-observation{font-size:14px;line-height:1.9;margin-bottom:10px}.result-sharing .actions{justify-content:flex-start;margin-top:18px;padding-top:0;border:0}.share-status:empty{display:none}.share-status{margin-top:14px;line-height:1.8}.share-link{display:block;margin-top:16px;width:100%;min-height:44px;font-size:12px;border:1px solid var(--line);border-radius:8px;padding:8px;background:var(--paper);color:var(--ink)}
.result-review .eyebrow{margin-bottom:8px}.review-round{border-top:1px solid var(--line);padding:17px 0}.review-round:last-child{padding-bottom:0}.review-round summary{cursor:pointer;display:flex;align-items:baseline;gap:12px;list-style:none;font-size:13px;line-height:1.9}.review-round summary::-webkit-details-marker{display:none}.review-round summary::after{content:'+';color:var(--muted);flex-shrink:0}.review-round[open] summary::after{content:'−'}.review-number{color:var(--muted);font-size:11px}.review-round summary>span:nth-child(2){flex:1}.review-outcome{font-size:10px;white-space:nowrap;color:var(--muted);border:1px solid var(--line);padding:2px 7px;border-radius:5px}.review-outcome.right{background:var(--chip);color:var(--accent)}
.review-body{background:var(--paper);border-radius:10px;margin:16px 0 0;padding:20px}.review-body dl{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:0 0 18px}.review-body dt{font-size:10px;color:var(--muted);margin-bottom:4px}.review-body dd{margin:0;font-size:13px}.review-body p{border-top:1px solid var(--line);padding-top:14px;font-size:13px;line-height:1.9}
.result-disclosure .prose{font-size:13px}.result-disclosure .notice{margin-top:20px;line-height:1.9}
@media(max-width:650px){
  .challenge-feature{grid-template-columns:1fr;gap:28px;padding:26px 24px;margin-bottom:28px}.challenge-feature h2{font-size:25px}.feature-dialogue{max-width:300px}.dialogue-you,.dialogue-ai,.dialogue-decision{padding:14px 20px}.dialogue-ai{min-width:200px}
  body.challenge .lab-main{padding:0 14px 30px}.challenge-intro{padding:28px 22px!important}.challenge-intro .title{font-size:29px}.challenge-intro .prose{font-size:13px}.challenge-emblem{width:78px;height:78px;font-size:23px;margin:24px auto}.challenge-itinerary{gap:12px}.challenge-itinerary strong{font-size:12px}.challenge-itinerary p{font-size:10px}.challenge-intro .actions{gap:9px}
  .challenge-topline{margin-bottom:24px;font-size:9px;gap:8px}.challenge-head .title{font-size:25px;margin-bottom:20px}.challenge-progress{gap:7px}.challenge-progress>span{height:30px}.challenge-arena{gap:18px}.challenge-question{padding:22px 20px}.decision-phases{gap:5px;padding-bottom:19px;margin-bottom:20px}.decision-phases li{font-size:10px;gap:5px}.decision-phases li>span{height:20px;width:20px;font-size:8px}.challenge .q-card .question{font-size:19px}.challenge .q-card .option{padding:12px;gap:9px}.challenge .q-card .option::before{width:23px;height:25px}.challenge .q-card .advice{padding:20px}.challenge .q-card .btn{min-width:0;width:100%}.challenge .q-card .confidence label{font-size:12px}.challenge-footnote{padding:0 8px;font-size:10px}.warmup-finish h2{font-size:22px}
  .challenge-results{gap:15px}.challenge-results .card{padding:24px 20px}.result-poster .title{font-size:25px}.result-scoreline strong{font-size:52px}.result-scoreline strong small{font-size:17px}.result-scoreline>div>span{font-size:11px}.result-decisions{gap:6px}.result-decisions>div{gap:4px}.result-decisions strong{font-size:22px}.result-decisions span{font-size:10px}.result-observation{font-size:13px}.challenge-results h2{font-size:20px}.review-round summary{flex-wrap:wrap;gap:6px 9px;font-size:12px}.review-round summary>span:nth-child(2){flex-basis:calc(100% - 30px)}.review-outcome{margin-left:24px}.review-body{padding:16px}.review-body dl{gap:13px}.review-body dd,.review-body p{font-size:12px}
}