*{box-sizing:border-box}
:root{color-scheme:light;--ink:#241934;--paper:#f8f1e8;--purple:#4a2590;--lime:#d9f659}
body{margin:0;min-height:100svh;font:17px/1.5 'Inter',Arial,sans-serif;color:var(--ink);background:var(--paper);background-image:radial-gradient(#4a259020 1px,transparent 1px);background-size:22px 22px}
header,main{width:min(1060px,calc(100% - 48px));margin:auto}
header{padding:25px 0;border-bottom:2px solid var(--ink);font-weight:900;letter-spacing:.14em;display:flex;align-items:center;gap:10px}
.mark{display:inline-grid;place-items:center;width:36px;height:36px;background:var(--purple);color:white;border-radius:50%;font-size:22px;letter-spacing:0}
.layout{display:grid;grid-template-columns:1fr 1fr;gap:75px;align-items:center;min-height:510px;padding:42px 0}
.eyebrow{font-weight:900;font-size:.75rem;letter-spacing:.15em;color:var(--purple)}
h1{margin:10px 0 22px;font-size:clamp(62px,9vw,112px);font-weight:950;letter-spacing:-.09em;line-height:.91}
h1 em{font:italic 1.04em/.95 Georgia,serif;color:var(--purple);letter-spacing:-.08em}
.intro p{max-width:320px}
.stamp{display:inline-flex;align-items:center;gap:12px;padding:1px 15px;border:2px solid var(--ink);border-radius:50%;background:var(--lime);box-shadow:3px 4px var(--ink);font:900 44px/1.25 Georgia,serif;transform:rotate(-9deg);margin-top:8px}
.stamp span{font-size:16px}
.card{background:#fffdf8;border:2px solid var(--ink);border-radius:20px;box-shadow:9px 9px var(--ink);padding:33px;min-width:0}
h2{font-size:clamp(25px,4vw,37px);line-height:1.1;letter-spacing:-.045em;margin:0 0 25px;overflow-wrap:anywhere}
label{font-weight:700}
input,button{font:inherit}
input[type=text],input:not([type]){width:100%;margin:7px 0 20px;border:2px solid var(--ink);border-radius:9px;padding:12px;background:#fff}
button{cursor:pointer;color:inherit}
.primary{display:flex;justify-content:space-between;gap:12px;width:100%;background:var(--lime);border:2px solid var(--ink);border-radius:9px;padding:12px 15px;font-weight:900}
.primary:hover:enabled{background:#c6e842}
.primary:disabled{opacity:.5;cursor:default}
fieldset{border:0;padding:0;margin:0 0 15px;min-width:0}
.option{display:flex;align-items:center;gap:10px;border:1px solid #bdb0c9;border-radius:8px;padding:8px 11px;margin-bottom:7px;cursor:pointer}
.option:has(input:checked){background:#ede4ff;border-color:var(--purple)}
input[type=radio]{accent-color:var(--purple)}
.progress{border-radius:99px;background:#e6dbf7;height:8px}
#bar{background:var(--purple);height:100%;border-radius:inherit}
.score{font-size:clamp(43px,8vw,76px);font-weight:900;color:var(--purple);line-height:1}
footer{border-top:2px solid var(--ink);padding:15px 0;font-size:.86rem}
:focus-visible{outline:3px solid var(--purple);outline-offset:3px}
@media(max-width:740px){.layout{grid-template-columns:1fr;gap:26px;padding:29px 0 40px}.card{padding:22px}.intro p{margin-bottom:7px}.stamp{display:none}}
:root{color-scheme:dark;--ink:#f5efff;--paper:#09080e;--purple:#c497ff;--lime:#984cf3}
body{background:radial-gradient(ellipse at 20% 15%,#281344,transparent 50%),var(--paper);font-family:Inter,Arial,sans-serif}
header,footer{border-color:#352845}
.layout{grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:48px;align-items:start;padding-top:70px}
h1{font:900 clamp(44px,7vw,90px)/.94 Inter,Arial,sans-serif;letter-spacing:-.07em}
h1 em{font:inherit;color:var(--purple)}
.intro p{color:#c8bbd8}
.card{background:#13101b;border:1px solid #493660;box-shadow:0 20px 65px #0008}
input:not([type]){background:#0d0b14;border-color:#493660;color:var(--ink)}
.primary{color:white;border:1px solid #ce9cff;background:#7235c9}
.primary:hover:enabled{background:#8d46e4}
.option{border-color:#493660}
.option:has(input:checked){background:#311e4c}
.progress{background:#2a2038}
.topic{font:700 .72rem/1.25 'IBM Plex Mono',monospace;text-transform:uppercase;color:#c497ff;margin:0 0 10px}
summary{cursor:pointer;font-weight:700;margin:16px 0;color:var(--purple)}
#review{padding-left:22px}
#review li{border-bottom:1px solid #493660;padding:10px 0}
#review p{margin:4px 0;color:#ded4ea;font-size:.9rem}
#review li.right::marker{color:#77e4b0}
#review li.wrong::marker{color:#ff9eaa}
@media(max-width:740px){.layout{grid-template-columns:1fr;gap:26px;padding-top:32px}}