body.reading-is-open { overflow: hidden; }
.reading-is-open #gameShell { display: none; }
.reading-shell {
  position: fixed; inset: 0; z-index: 8; overflow-y: auto; overscroll-behavior: contain;
  background: #eef8ff; color: #244260; font-family: inherit;
  padding: max(16px, env(safe-area-inset-top)) max(16px, env(safe-area-inset-right)) max(28px, env(safe-area-inset-bottom));
}
.reading-shell[hidden] { display: none; }
.reading-shell * { box-sizing: border-box; }
.reading-wrap { max-width: 960px; margin: auto; }
.reading-nav { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 20px; }
.reading-brand { font-weight: 900; font-size: 24px; }
.reading-brand small { font-size: 12px; margin-left: 10px; font-weight: 500; }
.reading-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.reading-shell button, .reading-shell select {
  font: inherit; color: inherit; min-height: 44px; border: 1px solid #b8cddd;
  border-radius: 12px; background: white; padding: 10px 14px; cursor: pointer;
}
.reading-shell button:focus-visible, .reading-shell select:focus-visible { outline: 3px solid #ef9a20; outline-offset: 3px; }
.reading-shell button:disabled { cursor: default; opacity: .6; }
.reading-shell .reading-primary { background: #2466b1; border-color: #2466b1; color: white; font-weight: 800; }
.reading-card { background: white; border-radius: 20px; padding: 28px; box-shadow: 0 6px 24px #2442600b; margin: 16px 0; }
.reading-card h1, .reading-card h2 { margin: 8px 0 16px; line-height: 1.3; }
.reading-kicker { font-weight: 700; color: #536d86; font-size: 14px; }
.reading-word-count { display: inline-block; vertical-align: middle; white-space: nowrap; font-size: 13px; font-weight: 500; line-height: 1.5; color: #536d86; background: #eef5fc; border-radius: 8px; padding: 3px 8px; }
.reading-info { font-size: 14px; line-height: 1.7; color: #536d86; }
.reading-picker { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; margin-top: 20px; }
.reading-picker select { flex: 1; min-width: 180px; max-width: 100%; }
.reading-steps { display: flex; gap: 8px; margin: 16px 0; }
.reading-steps span { flex: 1; padding: 12px 8px; border-radius: 10px; text-align: center; background: #dce9f5; font-size: 14px; }
.reading-steps .current { background: #2466b1; color: white; font-weight: 800; }
.reading-stage-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.reading-clock { white-space: nowrap; font-size: 24px; font-weight: 800; font-variant-numeric: tabular-nums; }
.reading-clock.expired { color: #a45c16; font-size: 16px; }
.reading-passage { font-size: clamp(19px, 2.5vw, 25px); line-height: 1.9; }
.reading-passage p { margin: 18px 0; }
.reading-passage mark { background: #fff0b9; color: inherit; border-radius: 4px; padding: 0 3px; }
.reading-glossary { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0 24px; }
.reading-glossary span { background: #f4f7fa; border-radius: 8px; padding: 8px 10px; font-size: 14px; }
.reading-focus-card { text-align: center; background: #f5f9fe; border-radius: 16px; padding: 32px 16px; margin: 24px 0; }
.reading-focus-card h2 { font-size: clamp(36px, 7vw, 60px); color: #2466b1; overflow-wrap: anywhere; margin: 24px 0 12px; }
.reading-focus-card p { font-size: 24px; margin: 12px 0 24px; line-height: 1.5; }
.reading-question { padding: 20px 0; border-top: 1px solid #e1eaf2; }
.reading-question h2 { font-size: clamp(20px, 3vw, 25px); }
.reading-question summary { min-height: 44px; padding: 12px 0; cursor: pointer; color: #2466b1; }
.reading-answer { background: #f0f7fc; padding: 16px; border-radius: 12px; line-height: 1.8; }
.reading-question .answered { background: #e2f5ea; color: #236344; border-color: #63a985; }
.reading-question-layout { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: 24px; align-items: start; }
.reading-question-list { min-width: 0; }
.reading-reference { border: 1px solid #d2dfeb; border-radius: 12px; padding: 0 16px 12px; background: #fbfdff; position: sticky; top: 12px; max-height: calc(100dvh - 44px); overflow-y: auto; }
.reading-reference-head { position: sticky; top: 0; background: #fbfdff; padding: 12px 0; z-index: 2; }
.reading-reference-head h2 { font-size: 20px; margin: 0 0 8px; }
.reading-shell .reading-reference-head button { font-size: 14px; padding: 8px 12px; }
.reading-reference-head button[hidden] { display: none; }
.reading-reference-text { font-size: 19px; line-height: 1.85; }
.reading-evidence { background: #fff0b9; color: inherit; border-radius: 4px; padding: 0 3px; box-decoration-break: clone; -webkit-box-decoration-break: clone; }
.reading-shell .is-hinted { background: #fff0b9; border-color: #d7ad44; }
.reading-reference-toggle { display: none; }
@media (max-width: 760px) {
  .reading-question-layout { grid-template-columns: minmax(0, 1fr); gap: 16px; margin-top: 16px; }
  .reading-reference { position: relative; top: auto; max-height: 65dvh; }
  .reading-reference-toggle { display: inline-block; }
  .is-reference-closed .reading-reference { display: none; }
  .reading-reference-text { font-size: 18px; }
}
.reading-feedback { min-height: 30px; line-height: 1.6; margin: 12px 0; color: #366889; }
.reading-feedback.wrong { color: #b74932; }
.reading-match-board { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) 80px minmax(0, 1fr); margin: 18px 0; }
.reading-word-list { grid-column: 1; }
.reading-meaning-list { grid-column: 3; }
.reading-match-board svg { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; overflow: visible; }
.reading-match-row { display: flex; align-items: stretch; gap: 4px; height: 66px; margin-bottom: 10px; position: relative; z-index: 1; }
.reading-shell .reading-word, .reading-shell .reading-meaning { width: 100%; padding: 8px; font-weight: 700; background: #f5f9fe; }
.reading-word { touch-action: none; }
.reading-word strong { display: block; font-size: 19px; }
.reading-word small { display: block; font-weight: 500; color: #63778b; font-size: 13px; margin-top: 3px; }
.reading-shell .reading-pronounce { padding: 4px 8px; min-width: 38px; }
.reading-shell .selected { outline: 3px solid #efae40; background: #fff6db; }
.reading-shell .matched { background: #e4f4ea; border-color: #63a985; opacity: 1; color: #256547; }
.reading-score { font-size: 48px; font-weight: 900; color: #2466b1; margin: 24px 0; }
.reading-reward { display: flex; align-items: center; gap: 16px; margin: 20px 0; background: #fff5d6; padding: 16px; border-radius: 12px; }
.reading-reward-piece { width: 80px; height: 80px; flex-shrink: 0; background-size: 300% 300%; border-radius: 8px; }
.reading-shell .reading-stop { font-size: 14px; }
.reading-shell .reading-answer-close { display: none; }
@media (max-width: 600px) {
  .reading-shell { padding-left: 12px; padding-right: 12px; }
  .reading-card { padding: 18px 14px; border-radius: 16px; }
  .reading-nav { align-items: flex-start; flex-direction: column; gap: 8px; margin-bottom: 12px; }
  .reading-brand { font-size: 21px; }
  .reading-nav button { padding: 8px 12px; }
  .reading-match-board { grid-template-columns: minmax(0, 1.15fr) 34px minmax(0, 1fr); }
  .reading-match-row { height: 70px; }
  .reading-word strong { font-size: 16px; }
  .reading-word small { font-size: 11px; }
  .reading-shell .reading-pronounce { min-width: 30px; padding: 4px; }
  .reading-shell .reading-word { padding: 6px 2px; }
  .reading-shell .reading-meaning { padding: 8px 4px; font-size: 15px; }
  .reading-steps span { font-size: 12px; padding: 10px 4px; }
}
/* Landscape tablets: five matching rows and three question columns keep
   practice controls visible without shrinking touch targets below 44px. */
@media (min-width: 900px) and (min-height: 560px) and (orientation: landscape) {
  .reading-shell { padding: max(10px, env(safe-area-inset-top)) max(16px, env(safe-area-inset-right)) max(10px, env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left)); }
  .reading-wrap { max-width: 1180px; }
  .reading-nav { margin-bottom: 6px; }
  .reading-brand { font-size: 22px; }
  .reading-shell button, .reading-shell select { padding: 6px 10px; font-size: 14px; }
  .reading-steps { margin: 6px 0; }
  .reading-steps span { padding: 7px 8px; font-size: 13px; }
  .reading-card { padding: 12px 20px; margin: 8px 0 0; border-radius: 16px; }
  .reading-card h1 { font-size: 26px; margin: 0 0 8px; }
  .reading-card h2 { margin: 4px 0 8px; }
  .reading-card > p { margin: 6px 0; }
  .reading-info { font-size: 13px; line-height: 1.5; }
  .reading-feedback { margin: 6px 0 0; min-height: 0; font-size: 13px; line-height: 1.4; }
  .reading-feedback:empty { display: none; }
  .reading-picker { margin-top: 8px; }
  .reading-focus-card { padding: 16px; margin: 12px 0; }
  .reading-focus-card h2 { font-size: 44px; margin: 12px 0 8px; }
  .reading-focus-card p { font-size: 22px; margin: 8px 0 12px; }
  .reading-passage { font-size: 20px; line-height: 1.6; }
  .reading-passage p { margin: 10px 0; }
  .reading-glossary { gap: 6px; margin: 8px 0 12px; }
  .reading-glossary span { padding: 5px 8px; font-size: 13px; }
  .reading-question-layout { grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 16px; margin-top: 10px; }
  .reading-reference { position: static; max-height: none; overflow: visible; padding: 0 12px 8px; }
  .reading-reference-head { position: static; padding: 8px 0 0; }
  .reading-reference-head h2 { font-size: 18px; }
  .reading-reference-head #questionReferenceBack { display: none; }
  .reading-reference-text { font-size: 18px; line-height: 1.5; }
  .reading-question-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; align-items: start; }
  .reading-question { padding: 8px 10px; border: 1px solid #e1eaf2; border-radius: 12px; }
  .reading-question h2 { font-size: 18px; line-height: 1.35; margin: 6px 0 8px; }
  .reading-question .reading-kicker { font-size: 12px; }
  .reading-question .reading-actions { gap: 6px; }
  .reading-question .reading-actions button, .reading-question > button { width: 100%; }
  .reading-question summary { padding: 8px 0; min-height: 44px; font-size: 13px; }
  .reading-question-list > button { grid-column: 1 / -1; }
  .reading-question details[open] .reading-answer {
    position: fixed; z-index: 10; top: 50%; left: 50%; transform: translate(-50%, -50%);
    width: min(620px, calc(100vw - 48px)); max-height: calc(100dvh - 48px);
    padding: 24px; background: #fff; border: 2px solid #b8cddd;
    box-shadow: 0 0 0 100vmax #24426066; font-size: 18px; line-height: 1.6;
  }
  .reading-shell .reading-answer-close { display: inline-block; margin-left: 8px; }
  .reading-match-board { grid-template-columns: minmax(0, 1.1fr) 36px minmax(0, 1fr); margin: 10px 0; }
  .reading-word-list, .reading-meaning-list {
    display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); grid-template-rows: repeat(5, auto);
    grid-auto-flow: column; gap: 6px 10px;
  }
  .reading-match-row { height: clamp(52px, calc((100dvh - 340px) / 5), 72px); margin: 0; min-width: 0; }
  .reading-word strong { font-size: 18px; }
  .reading-word small { font-size: 12px; margin-top: 2px; }
  .reading-shell .reading-word, .reading-shell .reading-meaning { padding: 4px; min-width: 0; }
  .reading-shell .reading-meaning { font-size: 17px; }
  .reading-match-board ~ .reading-feedback:not(:empty) { display: inline-block; vertical-align: middle; margin: 0 0 0 12px; max-width: calc(100% - 230px); }
  .reading-score { margin: 12px 0; }
  .reading-reward { margin: 12px 0; padding: 12px; }
}
@media (min-width: 900px) and (min-height: 560px) and (max-height: 700px) and (orientation: landscape) {
  .reading-passage { font-size: 18px; line-height: 1.5; }
  .reading-passage p { margin: 8px 0; }
  .reading-reference-text { font-size: 17px; line-height: 1.45; }
  .reading-question h2 { font-size: 17px; line-height: 1.3; }
}