@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');
:root{--paper:#f7f5ee;--ink:#23241f;--muted:#71736a;--lime:#d7f849;--orange:#ff9167;--lilac:#c4aff3;--blue:#b8d8f5;--line:#dadbd1;--display:'Space Grotesk',Arial,sans-serif;--body:'DM Sans',Arial,sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--body);-webkit-font-smoothing:antialiased}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;color:inherit;cursor:pointer}button:disabled{cursor:default}button,a{touch-action:manipulation}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #6c46d3;outline-offset:5px}a{color:inherit}button{border:0}button:active:not(:disabled){transform:translateY(2px)}.site-header{max-width:1400px;margin:auto;padding:22px 5%;height:104px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:22px;text-decoration:none}.logo-crop{display:block;width:88px;height:47px;overflow:hidden;position:relative;mix-blend-mode:multiply}.logo-crop img{position:absolute;width:116px;max-width:none;left:-12px;top:-36px}.brand-caption{font-size:9px;line-height:1.65;letter-spacing:1.3px;border-left:1px solid #c8c9be;padding-left:22px;font-weight:700}.header-right{display:flex;gap:15px;align-items:center}.event-pill{font-size:10px;font-weight:700;letter-spacing:1.2px;display:flex;align-items:center;gap:8px}.event-pill i{height:7px;width:7px;border-radius:50%;background:#70943b;box-shadow:0 0 0 4px #e8eddd}.icon-button{position:relative;width:38px;height:38px;border:1px solid var(--line);border-radius:50%;background:transparent;font-size:23px}.sound-slash{position:absolute;font-size:27px;left:13px;top:0}.site-footer{max-width:1260px;margin:54px auto 0;padding:23px 0 25px;border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;font-size:9px;letter-spacing:1px;color:var(--muted)}.footer-star{color:var(--ink);font-size:19px;vertical-align:middle;margin:0 12px}#app{max-width:1260px;margin:auto}.hero{position:relative;min-height:385px;display:flex;align-items:center;justify-content:space-between;padding:49px 0 45px}.eyebrow{text-transform:uppercase;font-size:10px;font-weight:700;letter-spacing:1.8px;display:block}.hero .eyebrow{display:flex;gap:8px;align-items:center}.mini-spark{font-size:19px}.hero h1{font-family:var(--display);font-size:clamp(55px,6.8vw,96px);font-weight:700;letter-spacing:-6px;line-height:1.08;margin:15px 0 1px;white-space:nowrap}.hero h1 .year{color:#767a65;font-weight:400}.hero h2{font-size:34px;font-family:var(--display);letter-spacing:-1.5px;margin:7px 0 20px;font-weight:500;display:inline-block;position:relative;z-index:0}.hero h2:after{content:'';height:11px;background:var(--lime);position:absolute;bottom:2px;left:-3px;right:-9px;z-index:-1;transform:rotate(-1.5deg)}.hero p{font-size:15px;line-height:1.7;color:var(--muted);margin:0;max-width:425px}.hero-art{position:relative;width:360px;height:285px;margin-right:22px;flex-shrink:0}.orbit{position:absolute;inset:34px 0 35px;border:1px solid #c5c6b9;border-radius:50%;transform:rotate(-30deg)}.orbit.second{transform:rotate(35deg);inset:10px 45px}.hero-art svg{width:240px;height:240px;position:absolute;left:57px;top:19px;animation:bob 5s ease-in-out infinite}.art-note{position:absolute;padding:11px 16px;border:1px solid var(--ink);box-shadow:3px 3px 0 var(--ink);font-size:11px;font-family:var(--display);font-weight:700;z-index:2}.art-note.top{background:var(--orange);right:-10px;top:33px;transform:rotate(9deg)}.art-note.bottom{background:var(--lilac);left:0;bottom:12px;transform:rotate(-8deg)}.orbit-dot{height:17px;width:17px;border:1px solid var(--ink);background:var(--lime);border-radius:50%;position:absolute;left:15px;top:99px}.art-spark{font-size:48px;position:absolute;right:13px;bottom:22px;animation:turn 18s linear infinite}.choose-heading{display:flex;justify-content:space-between;align-items:end;margin:12px 0 22px}.choose-heading h2{font-size:23px;font-family:var(--display);letter-spacing:-.8px;margin:0}.choose-heading h2 span{font-weight:400;color:var(--muted)}.choose-heading p{font-size:11px;color:var(--muted);margin:0}.topics{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.topic-card{text-align:left;border:1.5px solid var(--ink);border-radius:17px;padding:24px 27px 22px;background:var(--accent);position:relative;overflow:hidden;box-shadow:0 5px 0 var(--ink);transition:transform .25s,box-shadow .25s;min-height:296px;display:flex;flex-direction:column}.topic-card:hover{transform:translateY(-7px) rotate(-.6deg);box-shadow:0 12px 0 var(--ink)}.topic-card:nth-child(2):hover{transform:translateY(-7px) rotate(.6deg)}.topic-top{display:flex;justify-content:space-between;align-items:center}.topic-index{font-family:var(--display);font-size:12px;font-weight:500}.topic-tag{font-size:9px;letter-spacing:.8px;padding:5px 8px;border:1px solid #23241f45;border-radius:5px}.topic-graphic{height:86px;position:relative;margin-top:10px}.topic-graphic svg{width:106px;height:80px;transition:transform .4s}.topic-card:hover .topic-graphic svg{transform:rotate(-7deg) scale(1.05)}.topic-card h3{font-family:var(--display);font-size:29px;letter-spacing:-1.2px;line-height:1.2;margin:5px 0 8px}.topic-card p{font-size:12px;line-height:1.6;max-width:240px;margin:0 0 21px}.topic-bottom{margin-top:auto;display:flex;justify-content:space-between;align-items:center;border-top:1px solid #23241f38;padding-top:16px;font-size:10px;letter-spacing:.3px}.circle-arrow{width:31px;height:31px;display:flex;align-items:center;justify-content:center;border:1px solid var(--ink);border-radius:50%;font-size:20px;background:#ffffff25}.play-note{display:flex;justify-content:center;gap:26px;margin-top:28px;font-size:10px;color:var(--muted)}.play-note span{display:flex;gap:7px;align-items:center}.play-note b{font-size:13px;color:var(--ink)}.screen{animation:appear .4s ease-out}.quiz-screen{max-width:1040px;margin:36px auto 0}.quiz-toolbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px;gap:12px}.text-button{padding:9px 0;background:none;font-size:12px;display:flex;align-items:center;gap:8px}.topic-label{font-family:var(--display);font-size:15px;font-weight:600;display:flex;align-items:center;gap:10px}.label-dot{width:12px;height:12px;background:var(--accent);border:1px solid var(--ink);border-radius:50%}.score-badge{font-size:12px;border:1px solid var(--ink);border-radius:30px;padding:9px 15px;background:var(--lime)}.progress-row{display:flex;justify-content:space-between;font-size:10px;letter-spacing:1px;font-weight:700;margin-bottom:10px}.progress-track{height:5px;background:#e1e2d7;border-radius:8px;overflow:hidden}.progress-fill{height:100%;background:var(--ink);transition:width .4s}.question-stage{text-align:center;min-height:212px;display:flex;align-items:center;justify-content:center;flex-direction:column;padding:25px 20px 32px}.question-stage .eyebrow{color:var(--muted);font-size:9px;margin-bottom:17px}.question-stage h1{font-family:var(--display);font-size:clamp(22px,2.8vw,36px);line-height:1.3;letter-spacing:-1px;max-width:890px;margin:0;outline:none}.answers{display:grid;grid-template-columns:1fr 1fr;gap:18px}.answer{display:flex;align-items:center;gap:18px;text-align:left;padding:25px 24px;min-height:125px;border:1.5px solid var(--ink);border-radius:13px;background:var(--tile);box-shadow:0 4px 0 var(--ink);transition:transform .18s,opacity .2s,box-shadow .18s;position:relative}.answer:hover:not(:disabled){transform:translateY(-4px);box-shadow:0 8px 0 var(--ink)}.answer:nth-child(1){--tile:var(--lilac)}.answer:nth-child(2){--tile:var(--orange)}.answer:nth-child(3){--tile:var(--blue)}.answer:nth-child(4){--tile:var(--lime)}.answer-letter{flex-shrink:0;width:34px;height:34px;border:1px solid #23241f70;display:flex;align-items:center;justify-content:center;border-radius:7px;font-family:var(--display);font-size:16px;font-weight:700;background:#ffffff30}.answer-text{font-size:15px;line-height:1.5;font-weight:500}.answer.dim{opacity:.32;box-shadow:none}.answer.correct{background:#d7f3b0;border:2px solid #497326;box-shadow:0 4px 0 #497326}.answer.wrong{background:#ffc9c1;border:2px solid #a63025;box-shadow:0 4px 0 #a63025}.answer-status{position:absolute;top:7px;right:12px;font-size:9px;font-weight:700;letter-spacing:.6px}.quiz-bottom{min-height:128px;padding-top:25px}.quiz-hint{text-align:center;font-size:11px;color:var(--muted);margin-top:17px}.quiz-hint kbd{border:1px solid var(--line);padding:3px 6px;border-radius:3px;font:inherit;background:white}.feedback{border:1px solid var(--line);background:#fffdf6;border-radius:12px;padding:16px 20px;display:flex;gap:20px;align-items:center;justify-content:space-between;animation:appear .2s ease-out}.feedback strong{font-family:var(--display);font-size:18px}.feedback p{font-size:12px;line-height:1.6;margin:6px 0 0;max-width:690px;color:#55584d}.feedback-controls{display:flex;flex-direction:column;align-items:center;gap:8px;flex-shrink:0}.button{border:1px solid var(--ink);border-radius:8px;padding:12px 19px;font-size:12px;font-weight:600;background:transparent;display:inline-flex;align-items:center;justify-content:center;gap:10px;transition:transform .2s,background .2s;text-decoration:none}.button.dark{background:var(--ink);color:var(--paper)}.button.lime{background:var(--lime)}.pause-button{border:0;background:none;text-decoration:underline;font-size:10px;padding:3px;color:var(--muted)}.result-screen{max-width:960px;margin:40px auto}.result-top{display:grid;grid-template-columns:1fr 255px;gap:45px;align-items:center;padding:35px 0 37px;border-bottom:1px solid var(--line)}.result-top h1{font-family:var(--display);font-size:51px;letter-spacing:-2px;line-height:1.1;margin:14px 0}.result-top p{color:var(--muted);font-size:14px;line-height:1.6}.result-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}.score-dial{width:215px;height:215px;border-radius:50%;background:conic-gradient(var(--lime) var(--percent),#e3e3d8 0);display:flex;justify-content:center;align-items:center;position:relative;border:1px solid var(--ink);transform:rotate(7deg)}.score-inner{background:var(--paper);width:177px;height:177px;border:1px solid var(--ink);border-radius:50%;display:flex;justify-content:center;align-items:center;flex-direction:column;transform:rotate(-7deg)}.score-inner strong{font-family:var(--display);font-size:62px;line-height:1;letter-spacing:-3px}.score-inner strong span{font-size:23px;letter-spacing:-1px;color:var(--muted)}.score-inner small{font-size:9px;letter-spacing:1px;margin-top:11px}.review-heading{display:flex;justify-content:space-between;align-items:center;margin:31px 0 19px;gap:15px}.review-heading h2{font-family:var(--display);font-size:23px;letter-spacing:-.7px;margin:0}.review-count{display:flex;gap:17px;font-size:11px}.review-count b{font-weight:500}.review-item{border:1px solid var(--line);border-radius:10px;margin:10px 0;background:#fffdf6;overflow:hidden}.review-item summary{list-style:none;display:flex;gap:14px;align-items:center;padding:17px 19px;cursor:pointer;font-size:13px;line-height:1.5}.review-item summary::-webkit-details-marker{display:none}.review-icon{width:25px;height:25px;border-radius:50%;background:#e3f1cb;color:#426b22;display:flex;justify-content:center;align-items:center;flex-shrink:0;font-size:14px}.review-item.incorrect .review-icon{background:#ffe0d9;color:#a63025}.review-num{color:var(--muted);font-size:10px;flex-shrink:0}.review-item summary .expand{margin-left:auto;font-size:21px;flex-shrink:0}.review-item[open] .expand{transform:rotate(45deg)}.review-detail{padding:0 23px 22px 73px;font-size:12px;line-height:1.7}.review-detail p{margin:7px 0}.review-detail .explanation{color:var(--muted);margin-top:12px}.reference-links{margin-top:25px;font-size:11px;color:var(--muted)}.reference-links a{margin-right:15px;text-underline-offset:3px}.reference-links summary{cursor:pointer;margin-bottom:10px}.result-sticker{position:absolute;right:-16px;top:8px;background:var(--orange);padding:8px 10px;border:1px solid var(--ink);font-size:10px;font-weight:700;transform:rotate(5deg)}dialog{border:1.5px solid var(--ink);border-radius:17px;background:var(--paper);padding:32px;max-width:430px;width:calc(100% - 40px);box-shadow:7px 7px 0 var(--ink)}dialog::backdrop{background:#23241f70;backdrop-filter:blur(4px)}dialog h2{font-family:var(--display);font-size:29px;letter-spacing:-1px;margin:14px 0}dialog p{font-size:14px;line-height:1.6;color:var(--muted)}.dialog-actions{display:flex;gap:10px;margin-top:24px}#confetti{position:fixed;inset:0;pointer-events:none;overflow:hidden;z-index:10}.confetti-bit{position:absolute;top:-25px;width:10px;height:16px;animation:fall 2.8s ease-in forwards}.screen:focus{outline:none}@keyframes bob{0%,100%{transform:translateY(0) rotate(-6deg)}50%{transform:translateY(-9px) rotate(2deg)}}@keyframes turn{to{transform:rotate(360deg)}}@keyframes appear{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes fall{to{transform:translate(var(--drift),110vh) rotate(600deg)}}
@media(min-width:1500px){.hero{min-height:420px}.topic-card{min-height:320px}.topic-graphic{height:100px}}
@media(max-width:1400px){#app,.site-footer{margin-left:6%;margin-right:6%}.site-header{padding-left:6%;padding-right:6%}.hero h1{font-size:7.1vw}.hero-art{width:320px;margin-right:0}.hero-art svg{left:37px}}
@media(max-width:1000px){.hero{min-height:345px}.hero h1{font-size:7.3vw;letter-spacing:-4px}.hero h2{font-size:29px}.hero-art{width:260px;height:250px}.hero-art svg{width:200px;height:200px;left:30px}.art-note.top{right:-10px;font-size:9px}.art-note.bottom{font-size:9px}.hero p{font-size:13px}.topic-card{padding:20px;min-height:300px}.topic-card h3{font-size:24px}.topics{gap:16px}.topic-tag{font-size:8px}.site-footer{font-size:8px}.answer-text{font-size:14px}}
@media(max-width:700px){.site-header{height:82px;padding-top:15px;padding-bottom:15px}.brand-caption{display:none}.logo-crop{transform:scale(.85);transform-origin:left center}.event-pill{font-size:8px;letter-spacing:.7px}.header-right{gap:12px}.hero{padding:32px 0 27px;display:block;min-height:0}.hero .eyebrow{font-size:8px}.hero h1{font-size:12.3vw;letter-spacing:-3.8px;margin-top:16px}.hero h2{font-size:28px;margin-top:8px;margin-bottom:15px}.hero p{font-size:13px;max-width:310px}.hero-art{position:absolute;width:100px;height:100px;right:0;bottom:20px;opacity:.95}.hero-art svg{width:94px;height:94px;top:0;left:0}.hero-art .orbit,.hero-art .art-note,.hero-art .orbit-dot,.hero-art .art-spark{display:none}.hero p{padding-right:58px}.choose-heading{margin-top:22px;align-items:start;gap:8px}.choose-heading h2{font-size:21px}.choose-heading h2 span{display:none}.choose-heading p{font-size:9px;margin-top:6px}.topics{grid-template-columns:1fr;gap:21px}.topic-card{min-height:211px;padding:19px 23px}.topic-graphic{position:absolute;right:19px;top:48px;width:90px;height:75px}.topic-graphic svg{width:85px;height:75px}.topic-card h3{font-size:28px;margin:24px 0 7px;padding-right:75px}.topic-card p{font-size:12px;max-width:75%;margin-bottom:17px;min-height:38px}.topic-bottom{padding-top:12px}.topic-tag{font-size:8px}.circle-arrow{height:27px;width:27px}.play-note{gap:13px;font-size:8px;flex-wrap:wrap;margin-top:26px}.site-footer{margin-top:32px;gap:13px;flex-direction:column;align-items:flex-start;font-size:8px;padding:20px 0}.quiz-screen{margin-top:20px}.quiz-toolbar{gap:8px;margin-bottom:22px}.topic-label{font-size:12px;gap:6px}.score-badge{font-size:10px;padding:7px 10px}.text-button{font-size:10px}.question-stage{min-height:186px;padding:25px 0}.question-stage h1{font-size:24px;letter-spacing:-.7px}.answers{gap:13px;grid-template-columns:1fr}.answer{padding:20px 17px;gap:13px;min-height:88px}.answer-text{font-size:13px}.answer-letter{height:28px;width:28px;font-size:13px}.quiz-bottom{padding-top:23px}.quiz-hint{font-size:10px}.quiz-hint .keyboard-hint{display:none}.feedback{align-items:stretch;flex-direction:column;gap:12px;padding:16px}.feedback-controls{flex-direction:row;justify-content:space-between}.feedback strong{font-size:17px}.feedback p{font-size:12px}.result-screen{margin-top:23px}.result-top{grid-template-columns:1fr;gap:25px;padding-top:15px}.result-top h1{font-size:41px}.score-dial{grid-row:1;width:165px;height:165px;margin:10px auto}.score-inner{width:134px;height:134px}.score-inner strong{font-size:49px}.score-inner small{font-size:8px}.result-sticker{right:-37px;font-size:9px}.result-actions .button{flex:1;padding:12px}.review-heading{align-items:start;flex-direction:column;gap:10px}.review-item summary{padding:14px 12px;gap:9px;font-size:12px}.review-num{display:none}.review-detail{padding:0 17px 17px 46px}.review-icon{height:23px;width:23px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}.confetti-bit{display:none}}

/* Keep the institute and society marks together at every screen size. */
.brand-logos{display:flex;align-items:center;gap:14px;flex-shrink:0}
.mait-logo{display:block;width:60px;height:60px;object-fit:contain;mix-blend-mode:multiply;flex-shrink:0}
.brand-divider{width:1px;height:38px;background:var(--line);flex-shrink:0}
.brand-logos .logo-crop{flex-shrink:0}
@media(max-width:700px){
  .brand-logos{gap:10px}
  .mait-logo{width:48px;height:48px}
  .brand-divider{height:32px}
  .brand-logos .logo-crop{width:75px;height:40px;transform:none}
  .brand-logos .logo-crop img{width:99px;left:-10px;top:-31px}
}
@media(max-width:420px){.event-pill{display:none}}