.spatial-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(2.25rem, 6.7vw, 4.8rem); 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 { color: var(--ink); font-size: clamp(1.05rem, 3vw, 1.65rem); }
.test-stage { min-height: 570px; 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% 27%, #2c2338 0, transparent 56%); background-size: 24px 24px, 24px 24px, auto; }
.prompt-panel { display: flex; min-height: 330px; 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; }
.word-lane { position: relative; display: grid; width: min(720px, 100%); min-height: 142px; grid-template-columns: 1fr 2fr 1fr; align-items: center; margin-bottom: 20px; border: 3px solid var(--line); background: #120f1d; box-shadow: 7px 7px 0 var(--shadow); }
.word-lane::after { position: absolute; top: 0; bottom: 0; left: 50%; border-left: 2px dashed #393047; content: ""; }
.side-guide { display: grid; height: 100%; place-items: center; color: #655a72; font-size: 2rem; }
#target-word { z-index: 1; display: block; width: 50%; padding: 20px 8px; border: 3px solid var(--gold); background: #2b2518; box-shadow: 4px 4px 0 var(--shadow); color: var(--gold); font-size: clamp(2rem, 8vw, 4.5rem); line-height: 1; text-shadow: 3px 3px 0 var(--shadow); transform: translateX(0); transition: transform 120ms steps(2, end); }
.word-lane[data-position="left"] #target-word { transform: translateX(-100%); }
.word-lane[data-position="right"] #target-word { transform: translateX(100%); }
.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: 650px; 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: 1.75rem; }
.result-flash span { color: var(--muted); font-size: .82rem; }
.direction-pad { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; max-width: 760px; margin: 24px auto 0; }
.direction-button { display: grid; min-height: 120px; grid-template-columns: auto 1fr auto; gap: 16px; align-items: center; padding: 18px 20px; border: 3px solid var(--ink); border-radius: 0; background: #231b30; box-shadow: 6px 6px 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; }
.direction-button:disabled { cursor: default; opacity: .48; }
.direction-button:not(:disabled):hover { background: #302540; }
.direction-button:not(:disabled):active, .direction-button.is-pressed { transform: translate(4px, 4px); box-shadow: 2px 2px 0 var(--shadow); }
.direction-button:focus-visible { outline: 4px solid var(--gold); outline-offset: 3px; }
.direction-mark { color: var(--blue); font-size: clamp(2.4rem, 6vw, 4.2rem); font-weight: 900; line-height: 1; }
.direction-right .direction-mark { color: var(--orange); }
.direction-button strong { font-size: clamp(1rem, 3vw, 1.35rem); letter-spacing: .1em; text-align: left; }
.key-pair { display: flex; gap: 6px; }
.key-pair kbd { width: 34px; height: 34px; border-color: var(--line); font-size: .9rem; }
.control-note { margin: 20px 0 0; color: var(--muted); font-size: .84rem; line-height: 1.5; text-align: center; }
.test-stage[data-state="countdown"] #target-word { animation: ready-pulse 700ms steps(2, end) infinite; }
.test-stage[data-state="active"] .word-lane { border-color: var(--blue); }
.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: #1d3128; }
.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: .4; } 50%, 100% { opacity: 1; } }
@media (max-width: 820px) { .test-heading { grid-template-columns: 1fr; } .progress-box { display: flex; align-items: center; justify-content: space-between; } .progress-box > span { margin: 0; } .related-links { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 650px) {
  .spatial-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(2rem, 10vw, 3.45rem); overflow-wrap: anywhere; }
  .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: 570px; padding: 28px 14px 24px; }
  .prompt-panel { min-height: 320px; }
  .word-lane { min-height: 112px; box-shadow: 5px 5px 0 var(--shadow); }
  #target-word { padding: 17px 4px; font-size: clamp(1.45rem, 10vw, 3rem); }
  .side-guide { font-size: 1.35rem; }
  .direction-pad { gap: 10px; }
  .direction-button { min-height: 104px; grid-template-columns: 1fr; gap: 5px; justify-items: center; padding: 12px 8px; }
  .direction-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 (prefers-reduced-motion: reduce) { .test-stage[data-state="countdown"] #target-word { animation: none; } .direction-button, #target-word, .deadline-fill { transition: none !important; } }