.size-shell { width: min(1060px, calc(100% - 32px)); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.test-card { overflow: hidden; border: 3px solid var(--ink); background: var(--panel); box-shadow: 10px 10px 0 var(--shadow); }
.test-heading { display: grid; grid-template-columns: 1fr auto; gap: 32px; align-items: end; padding: 30px 34px; border-bottom: 3px solid var(--ink); }
.test-heading .eyebrow { margin-bottom: 10px; }
.test-heading h1 { max-width: 780px; font-size: clamp(2.4rem, 7vw, 5rem); line-height: .94; }
.lede { max-width: 690px; margin: 18px 0 0; color: var(--muted); font-size: 1rem; line-height: 1.6; }
.progress-box { min-width: 150px; padding: 16px; border: 2px solid var(--line); background: #171220; text-align: center; }
.progress-box > span, .stat > span { display: block; margin-bottom: 7px; color: var(--muted); font-size: .78rem; font-weight: 800; letter-spacing: .1em; }
.progress-box strong { color: var(--gold); font-size: 1.6rem; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-bottom: 3px solid var(--ink); }
.stat { min-width: 0; padding: 18px 16px; border-right: 2px solid var(--line); text-align: center; }
.stat:last-child { border-right: 0; }
.stat strong { font-size: clamp(1.05rem, 3vw, 1.65rem); }
.test-stage { min-height: 610px; padding: 38px 34px 32px; background: linear-gradient(rgba(247,201,72,.025) 1px,transparent 1px), linear-gradient(90deg,rgba(247,201,72,.025) 1px,transparent 1px), radial-gradient(circle at 50% 28%,#2a2039 0,transparent 54%); background-size: 24px 24px,24px 24px,auto; }
.prompt-panel { display: flex; min-height: 360px; flex-direction: column; align-items: center; justify-content: center; text-align: center; }
.stage-kicker { margin: 0 0 12px; color: var(--gold); font-size: .78rem; font-weight: 800; letter-spacing: .14em; }
.object-arena { display: grid; width: min(680px,100%); min-height: 170px; grid-template-columns: minmax(0,1fr) auto minmax(0,1fr); gap: 18px; align-items: center; margin-bottom: 18px; }
.object-space { display: grid; min-width: 0; min-height: 170px; place-items: center; border: 3px solid var(--ink); background: #171220; box-shadow: 7px 7px 0 var(--shadow); }
.visual-object { display: block; overflow: visible; color: var(--blue); filter: drop-shadow(5px 5px 0 var(--shadow)); transition: width 120ms ease,height 120ms ease; }
.object-space:last-child .visual-object { color: var(--gold); }
.visual-object > :not(.detail) { fill: currentColor; stroke: var(--ink); stroke-width: 4; vector-effect: non-scaling-stroke; }
.visual-object .detail { fill: none; stroke: var(--ink); stroke-width: 6; vector-effect: non-scaling-stroke; }
.visual-object.is-hidden { visibility: hidden; }
.versus-mark { color: var(--muted); font-size: 1rem; font-weight: 900; }
.prompt-panel h2 { margin: 0; font-size: clamp(1.45rem,4vw,2.5rem); letter-spacing: -.04em; }
.prompt-panel > p:not(.stage-kicker,.sr-only) { max-width: 680px; min-height: 48px; margin: 12px 0 14px; color: var(--muted); font-size: .95rem; line-height: 1.55; }
.result-flash { display: flex; min-height: 42px; margin: 0 0 15px; flex-direction: column; align-items: center; justify-content: center; }
.result-flash[hidden] { display: none; }
.result-flash strong { color: var(--green); font-size: 1.55rem; }
.result-flash span { color: var(--muted); font-size: .82rem; }
.answer-pad { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 12px; max-width: 680px; margin: 24px auto 0; }
.answer-button { display: grid; min-height: 104px; grid-template-columns: auto 1fr auto; gap: 12px; align-items: center; padding: 15px; border: 3px solid var(--ink); border-radius: 0; background: #231b30; box-shadow: 5px 5px 0 var(--shadow); color: var(--ink); cursor: pointer; touch-action: manipulation; transition: transform 80ms ease,box-shadow 80ms ease,background 100ms ease; user-select: none; }
.answer-button:disabled { cursor: default; opacity: .52; }
.answer-button:not(:disabled):hover { background: #302540; }
.answer-button:not(:disabled):active,.answer-button.is-pressed { transform: translate(3px,3px); box-shadow: 2px 2px 0 var(--shadow); }
.answer-button:focus-visible { outline: 4px solid var(--gold); outline-offset: 3px; }
.answer-icon { color: var(--button-color); font-size: 2.2rem; font-weight: 900; line-height: 1; }
.answer-button strong { font-size: .92rem; letter-spacing: .08em; text-align: left; }
.key-pair { display: flex; gap: 4px; }
.key-pair kbd { width: 30px; height: 30px; border-color: var(--line); font-size: .8rem; }
.answer-left { --button-color: var(--blue); } .answer-right { --button-color: var(--gold); }
.control-note { margin: 18px 0 0; color: var(--muted); font-size: .84rem; line-height: 1.5; text-align: center; }
.test-stage[data-state="countdown"] .object-arena { animation: ready-pulse 650ms steps(2,end) infinite; }
.test-stage[data-state="active"] .object-space { border-color: var(--line); }
.test-stage[data-state="active"] .primary-button,.test-stage[data-state="feedback"] .primary-button,.test-stage[data-state="countdown"] .primary-button { visibility: hidden; }
.test-stage[data-state="game-over"] { background-color: #351521; } .test-stage[data-state="complete"] { background-color: #2d2515; } .test-stage[data-state="cancelled"] { background-color: #241a31; }
.content-section { display: grid; grid-template-columns: .85fr 1.6fr; gap: 64px; padding: 76px 18px 58px; }
.content-section h2,.info-panel h2,.faq-section h2,.related-section h2 { margin: 0; font-size: clamp(1.8rem,4vw,3rem); line-height: 1.08; letter-spacing: -.05em; }
.steps-list { margin: 0; padding: 0; border-top: 2px solid var(--line); list-style: none; }
.steps-list li { display: grid; grid-template-columns: 54px 1fr; gap: 18px; padding: 20px 0; border-bottom: 2px solid var(--line); }
.steps-list span { color: var(--gold); font-weight: 800; }
.steps-list p,.info-panel p,.faq-list p { margin: 0; color: var(--muted); font-size: 1rem; line-height: 1.7; }
.reading-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.info-panel { padding: 30px; border: 2px solid var(--line); background: var(--panel); }
.info-panel h2 { margin-bottom: 22px; } .info-panel > p:not(.section-kicker) + p { margin-top: 16px; }
.faq-section,.related-section { padding: 72px 18px 0; }
.faq-list { margin-top: 28px; border-top: 2px solid var(--line); }
.faq-list details { border-bottom: 2px solid var(--line); }
.faq-list summary { padding: 22px 44px 22px 0; color: var(--ink); cursor: pointer; font-size: 1.05rem; font-weight: 800; line-height: 1.4; }
.faq-list details p { max-width: 850px; padding: 0 0 24px; }
.related-links { display: grid; grid-template-columns: repeat(4,1fr); gap: 12px; margin-top: 28px; }
.related-links a { display: flex; min-height: 118px; flex-direction: column; justify-content: space-between; padding: 18px; border: 2px solid var(--line); background: var(--panel); color: var(--ink); font-weight: 800; line-height: 1.35; text-decoration: none; }
.related-links a:hover,.related-links a:focus-visible { border-color: var(--gold); outline: 0; }
.related-links small { color: var(--muted); font-size: .76rem; font-weight: 400; }
@keyframes ready-pulse { 0%,49% { opacity: .45; } 50%,100% { opacity: 1; } }
@media (max-width: 860px) { .test-heading { grid-template-columns: 1fr; } .progress-box { display: flex; align-items: center; justify-content: space-between; } .progress-box > span { margin: 0; } .answer-button { grid-template-columns: auto 1fr; } .key-pair { grid-column: 1/-1; justify-content: center; } .related-links { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 650px) {
  .size-shell { width: min(100% - 18px,620px); padding-top: 10px; } .test-card { box-shadow: 6px 6px 0 var(--shadow); } .test-heading { gap: 20px; padding: 24px 18px; } .test-heading h1 { font-size: clamp(2.25rem,12vw,3.8rem); }
  .stats-grid { grid-template-columns: repeat(2,1fr); } .stat:nth-child(2) { border-right: 0; } .stat:nth-child(-n+2) { border-bottom: 2px solid var(--line); }
  .test-stage { min-height: 610px; padding: 28px 12px 24px; } .prompt-panel { min-height: 350px; } .object-arena { min-height: 150px; gap: 7px; } .object-space { min-height: 150px; box-shadow: 4px 4px 0 var(--shadow); } .visual-object { max-width: 126px; max-height: 126px; } .versus-mark { font-size: .72rem; }
  .answer-pad { gap: 8px; } .answer-button { min-height: 96px; grid-template-columns: 1fr; gap: 5px; justify-items: center; padding: 10px 6px; } .answer-button strong { text-align: center; } .key-pair { display: none; }
  .content-section,.reading-grid { grid-template-columns: 1fr; } .content-section { gap: 30px; padding: 58px 8px 44px; } .info-panel { padding: 24px 20px; } .faq-section,.related-section { padding: 58px 8px 0; } .related-links { grid-template-columns: 1fr; } .related-links a { min-height: 92px; }
}
@media (max-width: 390px) { .object-space { min-height: 138px; } .visual-object { max-width: 112px; max-height: 112px; } .answer-icon { font-size: 1.8rem; } }
@media (prefers-reduced-motion: reduce) { .test-stage[data-state="countdown"] .object-arena { animation: none; } .answer-button,.visual-object { transition: none; } }