:root {
  font-family: Inter, "Microsoft YaHei", system-ui, sans-serif;
  color: #17324d;
  background: #eef7f2;
}

* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; background: radial-gradient(circle at top, #fff9dc 0, #eef7f2 42%, #dceee7 100%); }
button { font: inherit; }
.game-shell { width: min(1100px, calc(100% - 32px)); margin: 0 auto; padding: 34px 0 50px; }
.hero { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-bottom: 24px; }
.eyebrow { margin: 0 0 5px; color: #e06435; font-size: .8rem; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 6px; font-size: clamp(2rem, 6vw, 4.2rem); line-height: .95; letter-spacing: -.055em; }
.subtitle { margin-bottom: 0; color: #587087; }
.header-actions { display: flex; align-items: center; gap: 10px; flex-wrap: nowrap; justify-content: flex-end; }
.language-switch { display: flex; padding: 4px; border-radius: 999px; background: rgba(255,255,255,.75); border: 1px solid #cbd9df; }
.language-button { border: 0; border-radius: 999px; padding: 8px 13px; color: #587087; background: transparent; cursor: pointer; font-weight: 750; }
.language-button.active { color: #fff; background: #e06435; }
.scoreboard { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 18px; }
.login-panel { margin-bottom: 18px; padding: 24px; border: 1px solid rgba(28,73,86,.1); border-radius: 22px; background: rgba(255,255,255,.86); text-align: center; }
.login-panel h2 { margin: 0 0 6px; }
.login-panel p { color: #587087; }
.login-row { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; }
.login-row select, .login-row input { min-height: 44px; padding: 0 13px; border: 1px solid #cbd9df; border-radius: 10px; font: inherit; }
.login-error { color: #b3382b !important; font-weight: 700; }
.scoreboard div, .question-card, .map-card, .game-over { border: 1px solid rgba(28,73,86,.1); border-radius: 22px; background: rgba(255,255,255,.82); box-shadow: 0 16px 45px rgba(32,75,68,.09); }
.scoreboard div { padding: 15px 20px; }
.scoreboard span { display: block; color: #698094; font-size: .82rem; }
.scoreboard strong { display: block; margin-top: 2px; font-size: 1.5rem; }
.scoreboard strong span { display: inline; color: inherit; font-size: inherit; }
.timer-box strong { color: #e06435; }
.timer-box.urgent strong { animation: pulse .7s infinite alternate; }
.question-card { padding: 22px 26px; text-align: center; }
.question-card p { margin-bottom: 5px; color: #688095; }
.question-card h2 { margin-bottom: 7px; font-size: clamp(1.7rem, 5vw, 2.7rem); }
.hint { font-size: .9rem; }
.map-card { margin-top: 18px; padding: 22px; text-align: center; overflow: hidden; }
.map-wrap { border-radius: 18px; background: linear-gradient(180deg, #b9e7f4, #e6f8fa); overflow: hidden; }
.world-map { display: block; width: 100%; height: auto; }
.country { fill: #f0d6a5; stroke: #fff8e8; stroke-width: 1.2; cursor: pointer; transition: fill .14s, filter .14s; outline: none; }
.country:hover, .country:focus { fill: #ffe66c; filter: drop-shadow(0 0 3px rgba(23,50,77,.42)); }
.country.correct { fill: #54c58a; stroke: #157347; stroke-width: 2.4; }
.country.wrong { fill: #ff8274; stroke: #a9271b; stroke-width: 2.4; }
.country.is-target { filter: drop-shadow(0 0 5px rgba(21,115,71,.55)); }
.feedback { min-height: 28px; margin: 17px 0 10px; font-weight: 750; }
.feedback.good { color: #157347; }
.feedback.bad { color: #b3382b; }
.learning-card { margin: 12px auto 16px; max-width: 620px; padding: 14px 18px; border-radius: 15px; text-align: left; color: #31546a; background: #f1f8f5; border: 1px solid #c8e4d7; }
.learning-card strong { display: block; margin-bottom: 7px; color: #17324d; }
.learning-card p { margin: 4px 0; }
.fact-loading { color: #718895; font-style: italic; }
.speak-button { margin-top: 10px; padding: 7px 12px; border: 1px solid #b9d8ca; border-radius: 999px; color: #157347; background: #fff; cursor: pointer; font-weight: 750; }
.speak-button:hover { background: #e9f7ef; }
.final-stats { color: #587087; font-weight: 700; }
.answer-lists { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; max-width: 760px; margin: 22px auto; text-align: left; }
.answer-lists > div { padding: 16px; border-radius: 16px; background: #f6faf8; border: 1px solid #dcebe4; }
.answer-lists h3 { margin: 0 0 8px; font-size: 1rem; color: #17324d; }
.answer-lists ul { margin: 0; padding-left: 20px; color: #587087; }
.answer-lists li { margin: 5px 0; }
@keyframes pulse { to { transform: scale(1.08); color: #b3382b; } }
.primary-button, .secondary-button { border: 0; border-radius: 999px; padding: 12px 22px; cursor: pointer; font-weight: 800; }
.primary-button { background: #17324d; color: #fff; }
.secondary-button { background: #fff; color: #17324d; border: 1px solid #cbd9df; }
.primary-button:hover, .secondary-button:hover { transform: translateY(-1px); }
.game-over { margin-top: 18px; padding: 42px 24px; text-align: center; }
.game-over h2 { font-size: 2rem; }

@media (max-width: 620px) {
  .game-shell { width: min(100% - 20px, 1100px); padding-top: 20px; }
  .hero { align-items: flex-end; }
  .header-actions { flex-direction: row; align-items: center; justify-content: flex-start; max-width: 100%; overflow-x: auto; padding-bottom: 2px; }
  .subtitle { display: none; }
  .scoreboard { grid-template-columns: repeat(2, 1fr); }
  .scoreboard div { padding: 12px; text-align: center; }
  .map-card { padding: 9px; }
  .country { stroke-width: 1.8; }
  .answer-lists { grid-template-columns: 1fr; }
  .login-row { flex-direction: column; }
  .login-row select, .login-row input, .login-row button { width: 100%; }
}