:root{--ink:#17342e;--teal:#1e7668;--mint:#c8e6d2;--cream:#f5f1e8;--paper:#fffdf8;--coral:#ec795d;--gold:#e8b84c;--line:#dbe2de;--muted:#687a75}*{box-sizing:border-box}body{margin:0;color:var(--ink);background:var(--cream);font-family:"DM Sans",sans-serif}button,a{font:inherit;color:inherit}.skip{position:fixed;top:5px;left:5px;background:white;padding:10px;z-index:99;transform:translateY(-150%)}.skip:focus{transform:none}header{height:72px;background:var(--paper);border-bottom:1px solid var(--line);display:flex;align-items:center;padding:0 30px;gap:30px}.brand{text-decoration:none;font:700 14px Manrope;display:flex;align-items:center;gap:10px}.brand>span{display:grid;place-items:center;width:34px;height:34px;border-radius:50% 50% 50% 8px;background:var(--ink);color:white}.course-name{margin:auto;display:flex;gap:8px;align-items:center;font-weight:600}.course-name i{width:8px;height:8px;border-radius:50%;background:var(--coral)}.exit{border:1px solid 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var(--ink);border-radius:50%;left:49%;top:27%}.magnifier:after{content:"";position:absolute;width:140px;height:17px;background:var(--ink);transform:rotate(48deg);right:-108px;bottom:-60px;border-radius:10px}.signal{position:absolute;border:1px solid #866b2b;border-radius:50%}.s1{width:480px;height:480px;left:8%;top:14%}.s2{width:680px;height:680px;left:-7%;top:0}.s3{width:60px;height:60px;background:var(--coral);right:12%;top:15%;border:0}.simulation{background:#eef2ef}.sidebar{width:205px;background:var(--ink);color:white;padding:25px 15px;display:flex;flex-direction:column}.avatar{width:42px;height:42px;display:grid;place-items:center;background:var(--coral);border-radius:12px;font-weight:bold;margin:0 0 35px 10px}.sidebar nav{display:grid;gap:7px}.sidebar nav button{border:0;background:transparent;color:#a9beb8;padding:13px;border-radius:7px;text-align:left;cursor:pointer}.sidebar nav button span{margin-left:8px}.sidebar nav button b{float:right;background:var(--coral);color:white;border-radius:10px;padding:1px 7px}.sidebar nav .selected{background:#ffffff18;color:white}.tip{margin-top:auto;background:#ffffff0d;border:1px solid #ffffff1c;padding:14px;border-radius:8px;font-size:11px}.tip p{color:#a9beb8;line-height:1.5}.mailbox{width:390px;background:white;border-right:1px solid var(--line)}.mailbox-head{height:105px;padding:22px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.mailbox-head h2{font-size:29px}.status{font-size:10px;text-align:right;color:var(--muted)}.status>div{width:95px;height:5px;background:#e7ece9;border-radius:5px;margin-top:8px}.status i{display:block;height:100%;width:0;background:var(--teal);border-radius:5px;transition:.4s}.message{width:100%;border:0;border-bottom:1px solid var(--line);background:white;padding:17px 19px;text-align:left;cursor:pointer;display:grid;grid-template-columns:38px 1fr auto;gap:11px}.message:hover,.message.active{background:#eef7f2}.message.reviewed{border-left:4px solid var(--teal)}.message .sender-icon{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:var(--mint);font-size:10px;font-weight:bold}.message:nth-child(2) .sender-icon{background:#ffd6cc}.message:nth-child(3) .sender-icon{background:#fae4ad}.message b,.message small,.message em{display:block}.message b{font-size:13px}.message small{font-size:10px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:240px}.message em{font-size:9px;font-style:normal;color:var(--muted)}.unread-dot{width:7px;height:7px;border-radius:50%;background:var(--coral)}.email-panel{flex:1;padding:35px 4%;overflow:auto;background:var(--paper)}.empty-state{text-align:center;max-width:340px;margin:18vh 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12px;font-size:11px;cursor:pointer}.clue:hover,.clue.found{border-color:var(--gold);background:#fff6dc}.decision{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:24px}.decision button{border:1px solid var(--line);background:white;border-radius:6px;padding:12px;cursor:pointer;font-size:12px;font-weight:600}.decision button:hover{border-color:var(--teal)}.decision button.report{background:var(--ink);color:white}.feedback{margin-top:18px;padding:17px;background:#e9f5ef;border-left:4px solid var(--teal);font-size:13px}.feedback.wrong{background:#fff0ec;border-color:var(--coral)}.feedback b{display:block}.next{float:right;border:0;background:var(--teal);color:white;padding:10px 18px;border-radius:5px;cursor:pointer;margin-top:12px}.results{justify-content:center;align-items:center;padding:55px;background:var(--mint)}.result-card{background:var(--paper);border-radius:18px;padding:45px;width:min(830px,100%);text-align:center;box-shadow:0 25px 60px 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span,.tip{display:none}.mailbox{width:330px}.decision{grid-template-columns:1fr}}@media(max-width:650px){header{padding:0 14px}.brand{font-size:0}.brand>span{font-size:14px}.course-name{font-size:12px}.exit{padding:7px 10px}.welcome-copy{padding:45px 22px}.hero-art{min-height:350px}.simulation.active{display:block}.sidebar{display:none}.mailbox{width:100%;border:0}.email-panel{display:none}.email-panel.mobile-open{display:block;position:fixed;inset:72px 0 0;z-index:10}.mailbox.mobile-hidden{display:none}.result-stats,.takeaway ol{grid-template-columns:1fr}.result-stats div{border-right:0;border-bottom:1px solid var(--line)}.results{padding:90px 14px 30px}.result-card{padding:35px 20px}.result-actions{flex-direction:column}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}
.answer-overlay{position:fixed;z-index:100;inset:0;background:#102722dd;backdrop-filter:blur(7px);display:grid;place-items:center;padding:20px;opacity:0;transition:opacity .25s}.answer-overlay.show{opacity:1}.answer-pop{position:relative;width:min(470px,100%);background:var(--paper);border-radius:20px;padding:75px 42px 36px;text-align:center;box-shadow:0 35px 90px #0007;transform:translateY(25px) scale(.88);transition:transform .45s cubic-bezier(.2,1.4,.4,1);overflow:hidden}.answer-overlay.show .answer-pop{transform:none}.answer-pop:before,.answer-pop:after{content:"";position:absolute;width:18px;height:18px;border-radius:4px;transform:rotate(35deg);animation:confetti 1.2s ease-in-out infinite alternate}.answer-pop:before{background:var(--gold);left:35px;top:48px}.answer-pop:after{background:var(--coral);right:38px;top:76px;animation-delay:.3s}.answer-burst{position:absolute;left:50%;top:0;transform:translate(-50%,-42%);width:125px;height:125px;display:grid;place-items:center}.answer-burst i{position:absolute;inset:0;border-radius:50%;background:var(--mint);box-shadow:0 0 0 13px #c8e6d244;animation:pulse-ring 1.4s ease-out infinite}.answer-burst span{position:relative;font:800 66px Manrope;color:var(--teal);animation:icon-pop .55s cubic-bezier(.2,1.8,.4,1)}.is-wrong .answer-burst i{background:#ffd8cf;box-shadow:0 0 0 13px #ec795d22}.is-wrong .answer-burst span{color:var(--coral)}.is-wrong .answer-pop:before,.is-wrong .answer-pop:after{border-radius:50%;background:var(--coral)}.answer-pop>p{font-size:10px;letter-spacing:.17em;color:var(--teal);font-weight:bold}.is-wrong .answer-pop>p{color:var(--coral)}.answer-pop h2{font-size:31px}.answer-message{font-size:14px;line-height:1.6;margin:15px 0 25px}.answer-pop button{border:0;border-radius:6px;background:var(--ink);color:white;padding:13px 18px;font-weight:bold;cursor:pointer}.answer-pop button b{margin-left:25px}@keyframes icon-pop{0%{transform:scale(0) rotate(-30deg)}100%{transform:scale(1) rotate(0)}}@keyframes pulse-ring{0%{box-shadow:0 0 0 0 #c8e6d288}100%{box-shadow:0 0 0 24px #c8e6d200}}@keyframes confetti{to{transform:translateY(12px) rotate(100deg)}}@media(prefers-reduced-motion:reduce){.answer-pop,.answer-overlay,.answer-burst i,.answer-burst span,.answer-pop:before,.answer-pop:after{animation:none!important;transition:none!important}}
