:root{--bg:#f7f8fc;--paper:#fff;--ink:#20233c;--muted:#62677e;--accent:#5146d9;--soft:#efedff;--line:#e4e5ef;--green:#166548;--red:#9d3543;font-family:Inter,"Segoe UI",Arial,sans-serif;color:var(--ink);background:var(--bg);font-synthesis:none}
*{box-sizing:border-box}body{margin:0;font-size:16px;line-height:1.6}button,a,input{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer;touch-action:manipulation}button:disabled{cursor:default}a{color:inherit}button:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,[tabindex="-1"]:focus-visible{outline:3px solid #847aec;outline-offset:5px}[hidden]{display:none!important}.shell{width:min(1100px,calc(100% - 64px));margin:auto}.header{background:var(--paper);border-bottom:1px solid var(--line)}.header-inner{height:88px;display:flex;align-items:center;gap:32px}.brand{display:flex;align-items:center;text-decoration:none;font-size:23px;font-weight:750;letter-spacing:-1px}.brand>span:last-child{color:var(--accent)}.brand-icon{display:grid;place-items:center;width:37px;height:37px;border-radius:11px;background:var(--accent);color:white;margin-right:10px;font-size:25px}.header-note{color:var(--muted);font-size:13px}.header .text-button{margin-left:auto}.text-button{border:0;background:none;color:var(--accent);padding:10px 4px;font-weight:650}.skip{position:absolute;top:-100px;background:white;z-index:10;padding:12px}.skip:focus{top:0}.eyebrow{color:var(--accent);font-size:11px;font-weight:750;letter-spacing:.15em}.hero{display:grid;grid-template-columns:1.2fr 1fr;gap:64px;align-items:center;padding:76px 0 64px}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(38px,4.8vw,60px);line-height:1.12;letter-spacing:-2.5px;margin:18px 0 22px;font-weight:750}h1 em{color:var(--accent);font-style:normal}.intro{font-size:18px;color:var(--muted);max-width:440px;line-height:1.75}.meta{display:flex;gap:20px;margin:26px 0;font-size:13px;color:var(--muted)}.actions{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.primary,.secondary{padding:13px 22px;border-radius:10px;font-weight:650;border:1px solid transparent;min-height:50px}.primary{background:var(--accent);color:white}.primary:hover{background:#4035b9}.primary:disabled{background:#e8e8f0;color:#787b8f}.secondary{background:white;border-color:var(--line);color:var(--ink)}.secondary:hover{background:var(--soft)}.hero-art{position:relative;padding:24px 0 28px 18px}.word-card{position:relative;border:1px solid var(--line);border-radius:18px;background:white;padding:25px 30px;transform:rotate(-4deg);width:88%;z-index:1}.word-card.second{margin:-4px 0 0 auto;transform:rotate(4deg);background:var(--soft);z-index:2;border-color:#ded9fd}.word-card .word{font-size:40px;letter-spacing:-1.5px;line-height:1.2;font-weight:700;margin:10px 0}.word-card p{margin:8px 0 0;color:var(--muted);font-size:14px}.word-label{font-size:11px;font-weight:700;letter-spacing:.13em;color:var(--muted)}.art-caption{font-size:12px;color:var(--muted);text-align:center;margin:28px 0 0}.section-head{display:flex;justify-content:space-between;align-items:center;gap:16px}.section-head h2{font-size:21px;letter-spacing:-.5px;margin:0}.section-head>span:last-child{font-size:12px;color:var(--muted)}.path{border-top:1px solid var(--line);padding:28px 0 40px}.path-grid{display:grid;grid-template-columns:repeat(3,1fr);margin-top:26px;gap:32px}.path-item{display:flex;gap:15px}.path-number{color:var(--accent);font-size:12px;background:var(--soft);border-radius:50%;height:32px;min-width:32px;display:grid;place-items:center}.path h3{font-size:15px;margin:2px 0 5px}.path p{font-size:13px;color:var(--muted);margin:0}.footer{border-top:1px solid var(--line);padding:24px 0;display:flex;justify-content:space-between;gap:18px;font-size:11px;color:var(--muted)}.footer-dot{padding:0 10px;color:#a0a3b4}.rule-panel{background:white;border:1px solid var(--line);border-radius:16px;margin-top:28px;padding:24px 32px}.rule-grid{display:grid;grid-template-columns:1fr 1fr;gap:36px}.rule-grid h2{color:var(--accent);font-size:28px;margin-bottom:6px}.rule-grid p{font-size:14px;margin:6px 0}.example{padding:10px 0}.rule-note{border-top:1px solid var(--line);padding-top:15px;margin:12px 0 0;color:var(--muted);font-size:13px}.work-area{max-width:800px;margin:40px auto 52px}.session-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;font-size:13px;color:var(--muted)}.steps{display:flex;gap:24px;margin:0 0 22px;padding:0;list-style:none;color:var(--muted);font-size:13px}.steps li{padding-bottom:8px;border-bottom:2px solid transparent}.steps .active{color:var(--accent);border-color:var(--accent);font-weight:700}.progress-row{display:flex;align-items:center;gap:16px;margin-bottom:22px}.progress-row span{white-space:nowrap;font-size:12px;color:var(--muted)}progress{appearance:none;display:block;width:100%;height:6px;border:0;border-radius:9px;overflow:hidden;background:var(--line)}progress::-webkit-progress-bar{background:var(--line)}progress::-webkit-progress-value{background:var(--accent);border-radius:9px}progress::-moz-progress-bar{background:var(--accent)}.panel{background:white;border:1px solid var(--line);border-radius:20px;padding:36px}.question-head{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:25px}.question-head .eyebrow{font-size:10px}.question-head span:last-child{font-size:12px;color:var(--muted)}.context{background:var(--bg);padding:16px 20px;border-left:3px solid #cac5f9;border-radius:0 8px 8px 0;margin-bottom:24px;color:#555c73;font-size:14px}.context span{display:block;color:var(--muted);font-size:10px;letter-spacing:.12em;font-weight:700;margin-bottom:5px}.question{font-size:25px;line-height:1.6;letter-spacing:-.4px;font-weight:600;margin:0 0 28px}.blank{display:inline-block;min-width:65px;border-bottom:2px solid var(--accent);color:var(--accent);text-align:center;line-height:1.3}.translation{font-size:16px;color:var(--muted);font-weight:400;margin-bottom:18px}.options{display:grid;grid-template-columns:1fr 1fr;gap:14px}.option{display:flex;align-items:center;gap:15px;padding:16px 20px;min-height:65px;border:1px solid #d5d6e4;border-radius:11px;background:white;color:var(--ink);font-size:19px;font-weight:600}.option .key{border:1px solid var(--line);color:var(--muted);font-size:11px;display:grid;place-items:center;width:25px;height:25px;border-radius:6px}.option:hover:not(:disabled),.option.selected{border-color:var(--accent);background:var(--soft)}.option.correct{border-color:#88bba7;background:#eff8f3;color:var(--green)}.option.wrong{border-color:#dba6ac;background:#fff3f3;color:var(--red)}.option:disabled{opacity:1}.feedback{margin-top:22px;padding:18px 20px;border-radius:10px;background:#eff8f3;color:var(--green);font-size:14px}.feedback.error{background:#fff3f3;color:var(--red)}.feedback h3{font-size:15px;margin:0 0 6px}.feedback p{margin:0}.panel-bottom{border-top:1px solid var(--line);margin-top:28px;padding-top:22px;display:flex;align-items:center;justify-content:space-between;gap:16px}.hint{font-size:11px;color:var(--muted)}.below-panel{display:flex;justify-content:space-between;gap:16px;margin-top:14px}.below-panel button{font-size:13px}.result{text-align:center;padding:46px 36px}.result h1{font-size:36px;letter-spacing:-1px}.result .intro{margin:0 auto 28px;font-size:16px}.score{font-size:70px;line-height:1.2;color:var(--accent);letter-spacing:-4px;font-weight:750;margin:24px 0 4px}.score small{font-size:28px;color:#9497aa;letter-spacing:-1px}.score-label{color:var(--muted);font-size:13px;margin-bottom:28px}.result .actions{justify-content:center}.result-details{text-align:left;margin:30px 0 0;padding-top:24px;border-top:1px solid var(--line)}.result-details h2{font-size:17px}.review-row{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--line);font-size:14px}.review-row:last-child{border:0}.review-row p{margin:0}.review-row small{color:var(--muted)}.checklist{display:grid;gap:12px;text-align:left;margin-top:30px;padding-top:24px;border-top:1px solid var(--line)}.checklist h2{font-size:17px;margin-bottom:0}.checklist label{display:flex;gap:12px;font-size:14px;align-items:flex-start}.checklist input{accent-color:var(--accent);width:18px;height:18px;flex-shrink:0;margin-top:3px}.save-note{margin:14px 0 0;font-size:12px;color:var(--muted)}
@media(max-width:720px){.shell{width:calc(100% - 36px)}.header-inner{height:72px;gap:15px}.header-note{display:none}.brand{font-size:21px}.hero{grid-template-columns:1fr;gap:18px;padding:38px 0 32px}h1{font-size:43px;letter-spacing:-1.8px}.intro{font-size:16px}.hero-art{max-width:400px;width:100%;margin:auto;padding:12px 12px 10px}.word-card{padding:17px 24px}.word-card .word{font-size:30px}.art-caption{margin-top:18px}.path-grid{grid-template-columns:1fr;gap:22px}.path{padding-bottom:30px}.footer{flex-direction:column;gap:6px}.work-area{margin:26px auto 32px}.panel{padding:23px 20px;border-radius:16px}.question{font-size:21px}.steps{gap:20px;font-size:12px}.option{padding:15px 12px;gap:10px;font-size:18px}.rule-panel{padding:20px}.rule-grid{grid-template-columns:1fr;gap:16px}.rule-grid>div+div{border-top:1px solid var(--line);padding-top:16px}.panel-bottom .hint{max-width:120px}.result{padding:30px 20px}.result h1{font-size:29px}.below-panel{flex-wrap:wrap}.section-head{align-items:flex-start}.meta{gap:12px}.question-head{margin-bottom:20px}.score{font-size:62px}}
@media(prefers-reduced-motion:no-preference){.panel{animation:appear .2s ease}@keyframes appear{from{opacity:.5;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}}
dialog{max-width:min(460px,calc(100% - 36px));border:1px solid var(--line);border-radius:16px;padding:28px;color:var(--ink);background:white}dialog::backdrop{background:rgba(25,28,48,.4)}dialog h2{font-size:22px}dialog p{color:var(--muted)}