.plate{display:flex;align-items:center;justify-content:center;border:3px solid #4e81a1;background:#215674;color:#fff;border-radius:9px;box-shadow:inset 0 0 0 2px #80a4bb,0 4px 0 #ccd6d2;padding:13px 24px;font-size:58px;font-weight:800;line-height:1.25;letter-spacing:4px;font-family:"PingFang SC","Microsoft YaHei",sans-serif;white-space:nowrap;width:fit-content}.small-plate{font-size:26px;letter-spacing:2px;padding:8px 17px;border-width:2px;border-radius:6px;box-shadow:inset 0 0 0 1px #80a4bb,0 3px 0 #d4ddda}.home-hero{display:grid;grid-template-columns:1fr 1.06fr;background:#edf3de;border:1px solid #e1e9d0;border-radius:20px;overflow:hidden;min-height:380px;position:relative}.hero-copy{padding:34px 0 36px 38px;z-index:1}.hello{color:#728162;margin-top:16px;font-size:14px}.hero-copy h1{margin:10px 0 18px;font-size:42px;line-height:1.3;letter-spacing:-1.5px}.hero-description{color:#728162;font-size:14px;line-height:1.9}.hero-button{margin-top:24px;min-width:174px}.hero-note{display:block;font-size:11px;color:#92a37b;margin-top:15px}.hero-scene{position:relative;display:flex;align-items:center;justify-content:center;padding:35px 16px 20px 0}.hero-scene img{width:100%;max-width:490px;image-rendering:pixelated}.scene-label{position:absolute;bottom:30px;right:30px;font-size:9px;font-weight:600;letter-spacing:1.6px;color:#95aa7a}.home-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:22px;padding:23px 0;border-bottom:1px solid var(--line)}.home-stats>div{display:flex;gap:12px;align-items:center;padding:0 28px}.home-stats>div+div{border-left:1px solid var(--line)}.home-stats .icon{color:#88a16f;width:26px;height:26px}.home-stats>div:first-child .icon{color:#c59b45}.home-stats span{color:#819071;font-size:12px}.home-stats strong{font-size:29px;margin-left:auto}.home-stats small{font-size:13px;color:#9aab89;font-weight:500}.expeditions{display:grid;grid-template-columns:1fr 1fr;gap:22px}.expedition{text-align:left;border:1px solid var(--line);background:#fff;border-radius:16px;padding:24px;transition:border-color .15s,background .15s}.expedition:hover{border-color:#a5b88b;background:#fbfcf7}.expedition-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.expedition h3{margin-bottom:8px}.expedition>p{font-size:12px}.expedition-bottom{display:flex;justify-content:space-between;align-items:center;margin-top:16px}.expedition-bottom .icon{color:#7b925f;width:19px;height:19px}.review-link{display:flex;align-items:center;gap:18px;text-align:left;width:100%;background:#f4f2e7;border:1px solid #e7e6d7;border-radius:14px;padding:20px 24px;margin-top:20px;min-height:102px}.review-icon{display:grid;place-items:center;width:48px;height:48px;flex-shrink:0;border-radius:12px;background:#eae6ce;color:#9d9360}.review-link h3{font-size:17px;margin-bottom:4px}.review-link p{font-size:12px}.review-link>.badge{margin-left:auto}.review-link>.icon{color:#9c9e80}.resume-banner{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 22px;background:#f4e8cf;border:1px solid #e3d2a9;border-radius:12px;margin-bottom:18px}.login-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:64px;align-items:center;padding:55px 0 40px}.login-story h1{font-size:52px;margin:20px 0;line-height:1.3}.login-story>p{color:#849471;font-size:15px}.world-art{width:100%;max-width:410px;display:block;margin-top:18px}.login-panel h2{margin:10px 0 26px;font-size:24px}.login-panel{padding:38px 32px}.login-form>.muted{margin-top:20px}.profiles{display:grid;grid-template-columns:1fr 1fr;gap:24px;max-width:740px;margin:10px auto 30px}.profiles+.center{margin-bottom:15px}.profile-card{display:flex;flex-direction:column;align-items:center;gap:20px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:35px 24px;transition:border .15s,transform .15s}.profile-card:hover{border-color:#8aa467;transform:translateY(-3px)}.profile-card .profile-go{width:100%;border-top:1px solid var(--line);padding-top:20px;margin-top:6px;display:flex;align-items:center;justify-content:center;gap:10px;font-size:14px;font-weight:700}.profile-card h2{font-size:25px}.settings-page{max-width:690px;margin:0 auto}.setup-panel h2{font-size:17px;margin-bottom:18px}.setting-block{border-top:1px solid var(--line);padding-top:24px;margin-top:24px}.count-options{display:flex;gap:12px}.count-options .chip{flex:1;font-size:18px;padding:15px}.setting-block>.small{margin:12px 0 24px}.settings-page>.btn{margin-top:20px}.game-main{max-width:850px;padding-top:28px}.question-progress{padding:8px 0 20px}.question-progress .meter-title{font-size:13px}.question-progress progress{height:9px}.mini-road{height:92px;position:relative;margin:12px 14px 24px;border-radius:10px;background:linear-gradient(to bottom,#d9e8bf 0 18%,#c2d29d 18% 25%,#c3c7b5 25% 75%,#aab29c 75% 82%,#d6e4b9 82% 100%);border:2px solid #d2dfb9;overflow:hidden}.road-dashes{position:absolute;top:49%;left:0;width:100%;height:3px;background:repeating-linear-gradient(to right,transparent 0 16px,#eef1d8 16px 38px)}.road-car{position:absolute;bottom:25px;width:62px;height:44px;image-rendering:pixelated;transition:left .45s ease-out;z-index:2}.road-goal{position:absolute;right:6px;top:15px;display:grid;place-items:center;width:48px;height:48px;color:#6d8760;background:#eff4df}.road-goal .icon{width:28px;height:28px}.question-panel{text-align:center;background:#fff;border:1px solid var(--line);border-radius:20px;padding:26px 32px 30px}.question-code{margin:6px auto 24px}.question-code.region{font-size:45px;font-weight:850;color:#466e3b;margin-top:15px;margin-bottom:15px}.question-title{font-size:25px;line-height:1.5;margin:12px 0}.question-panel>.muted{font-size:13px;margin-bottom:22px}.question-panel>.badge{margin-bottom:16px}.options{display:grid;grid-template-columns:1fr 1fr;gap:14px}.option{display:flex;gap:15px;align-items:center;text-align:left;border:2px solid #e4e9dc;border-radius:12px;background:#fafbf7;min-height:76px;padding:15px 20px;transition:background .15s,border-color .15s}.option-letter{display:grid;place-items:center;flex-shrink:0;width:32px;height:32px;border-radius:7px;color:#8c9b7d;background:#eff3e7;font-weight:700;font-size:14px}.option strong{font-size:21px;overflow-wrap:anywhere}.option>.icon{margin-left:auto;color:#60804c}.option:hover:not(:disabled){border-color:#8fac74;background:#f3f7eb}.option.selected{border-color:#829d69;background:#eff5e4}.option:disabled{opacity:1}.option.correct{border-color:#8aaf62;background:#edf6e3}.option.correct .option-letter{background:#d6e9c4;color:#577c3a}.option.wrong{border-color:#e1bd8e;background:#fbf0de}.option.wrong .option-letter{background:#f1dfbf;color:#ad854c}.confirm-status{font-size:13px;color:#7c9070;min-height:25px;margin-top:16px}.feedback{border-radius:12px;padding:20px 22px;text-align:left;margin-top:24px;border:1px solid #d8e5c8;background:#f0f6e7;animation:feedback-in .25s ease-out}.feedback.learn{background:#fcf5e8;border-color:#e7d9b9}.feedback-title{display:flex;align-items:center;gap:10px;font-size:17px}.feedback>.btn{width:100%;margin-top:18px}.feedback p{font-size:14px;color:#657955;margin-top:10px}.feedback.learn p{color:#8b7c5e}.quiz-footer{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:18px}.quiz-footer>.small{font-size:11px}.result-emblem{animation:feedback-in .45s ease-out}@keyframes feedback-in{from{opacity:0;transform:translateY(7px)}to{opacity:1;transform:translateY(0)}}
@media(max-width:900px){.hero-copy h1{font-size:36px}.hero-copy{padding:30px 0 30px 28px}.home-stats>div{padding:0 14px;gap:8px}.login-grid{gap:30px}.login-story h1{font-size:42px}.scene-label{font-size:8px;right:16px}.profile-card{padding:30px 22px}}
@media(max-width:650px){.home-hero{grid-template-columns:1fr;min-height:auto}.hero-copy{padding:26px 25px 0}.hero-copy h1{font-size:36px;line-height:1.27;margin:10px 0 14px}.hero-description{font-size:13px}.hello{margin-top:14px;font-size:12px}.hero-button{margin-top:20px}.hero-note{display:inline-block;margin-left:12px;font-size:9px;width:95px;line-height:1.6;vertical-align:middle}.hero-scene{padding:0 18px 15px;margin-top:-5px;height:210px}.hero-scene img{max-width:310px;max-height:230px}.scene-label{right:18px;bottom:13px;font-size:7px}.home-stats{margin-top:16px;gap:0;padding:18px 0}.home-stats>div{flex-wrap:wrap;gap:6px;justify-content:center;padding:0 6px}.home-stats .icon{width:19px;height:19px}.home-stats span{font-size:10px}.home-stats strong{width:100%;text-align:center;margin:0;font-size:26px}.home-stats small{font-size:11px}.expeditions{grid-template-columns:1fr;gap:14px}.expedition{padding:22px}.expedition-top{margin-bottom:16px}.expedition h3{font-size:20px}.expedition>.p{font-size:13px}.review-link{gap:12px;padding:18px 15px}.review-link .review-icon{width:40px;height:40px}.review-link h3{font-size:16px}.review-link p{font-size:11px}.review-link>.icon{display:none}.review-link>.badge{flex-shrink:0}.resume-banner{flex-direction:column;align-items:flex-start;padding:17px}.resume-banner>.actions{justify-content:flex-start}.login-grid{grid-template-columns:1fr;gap:24px;padding:26px 0}.login-story h1{font-size:40px;margin:16px 0}.login-story>p{font-size:13px}.world-art{max-width:300px;margin:0 auto;max-height:220px}.login-panel{padding:28px 22px}.login-panel h2{font-size:22px}.profiles{gap:14px}.profile-card{padding:24px 12px;gap:17px}.avatar.large{width:86px;height:86px}.profile-card h2{font-size:21px;overflow-wrap:anywhere}.profile-card .points{gap:4px}.profile-card p{font-size:11px}.profile-card .profile-go{font-size:12px;gap:7px}.profiles .badge{font-size:9px}.game-main{padding-top:18px}.question-panel{padding:22px 18px}.question-title{font-size:21px;margin:14px 0 10px}.question-code.plate{font-size:52px}.question-code.region{font-size:38px}.options{grid-template-columns:1fr;gap:11px}.option{min-height:62px;padding:12px 15px}.option strong{font-size:20px}.question-panel>.muted{margin-bottom:18px;font-size:12px}.mini-road{height:75px;margin:0 0 20px}.road-car{width:50px;height:36px;bottom:20px}.road-goal{width:36px;height:36px;top:13px}.road-goal .icon{width:22px;height:22px}.question-progress{padding-bottom:16px}.feedback{padding:18px 15px;margin-top:20px}.feedback-title{font-size:16px}.feedback p{font-size:13px}.quiz-footer{flex-wrap:wrap;justify-content:space-between}.quiz-footer>.muted{order:3;width:100%;text-align:center}.count-options{gap:9px}.count-options .chip{font-size:16px;padding:15px 10px}.setup-panel h2{font-size:16px}.settings-page .chips .chip{flex:1}.setting-block{margin-top:20px;padding-top:20px}}
.gem-burst{margin-left:auto;color:#c69c3f;animation:gem-pop .45s ease-out}@keyframes gem-pop{0%{transform:translateY(9px) scale(.5);opacity:0}60%{transform:translateY(-5px) scale(1.22);opacity:1}100%{transform:translateY(0) scale(1);opacity:1}}

/* Compact challenge layout: keep the prompt, options and next action together. */
#app.quiz-active{overflow-anchor:none}
.game-main{max-width:1120px;padding-top:14px;padding-bottom:18px}
.quiz-header .header-inner{min-height:72px}
.quiz-topbar{display:flex;align-items:center;gap:20px;margin-bottom:10px}
.quiz-topbar .question-progress{flex:1;min-width:0;padding:0}
.quiz-topbar .player-toolbar{flex-shrink:0;padding:0}
.quiz-topbar .meter-title{margin-bottom:6px}
.game-main .mini-road{height:52px;margin:0 0 16px}
.game-main .road-car{width:48px;height:34px;bottom:10px}
.game-main .road-goal{width:32px;height:32px;top:8px}
.game-main .road-goal .icon{width:22px;height:22px}
.game-main .question-panel{padding:22px 24px}
.question-prompt>.badge{margin-bottom:14px}
.question-prompt>.muted{font-size:13px;margin-bottom:18px}
.answer-panel{min-width:0}
.game-main .feedback{margin-top:14px;padding:14px 16px}
.game-main .feedback-title{font-size:16px}
.game-main .feedback p{font-size:13px;line-height:1.65;margin-top:8px;overflow-wrap:anywhere}
.game-main .feedback>.btn{min-height:44px;margin-top:12px;padding:10px 20px}
.game-main .quiz-footer{margin-top:10px}
.game-main .confirm-status{margin-top:12px}
.question-title:focus{outline:none}
.learning-card{text-align:left;border-top:1px solid var(--line);padding-top:10px;margin-top:10px}
.learning-title{display:flex;align-items:center;gap:7px;font-size:13px;line-height:1.5}
.learning-title .icon{width:16px;height:16px;flex-shrink:0}
.learning-card p{line-height:1.65;overflow-wrap:anywhere;margin:8px 0}
.learning-more,.learning-sources{font-size:12px;line-height:1.65;margin-top:6px}
.learning-card summary{cursor:pointer;min-height:28px;display:list-item;padding:4px 0}
.learning-card ul{padding-left:20px;margin:6px 0}
.learning-card a{overflow-wrap:anywhere;text-decoration:underline}
.clue-title{font-size:22px;line-height:1.65;text-align:left;overflow-wrap:anywhere}
.card-dialog .learning-card{margin:18px 0}
@media(min-width:900px){
  .game-main .question-panel{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:26px;min-height:392px}
  .question-prompt{display:flex;flex-direction:column;align-items:center;justify-content:center;border-right:1px solid var(--line);padding-right:26px}
  .game-main .question-code{margin:4px auto 18px}
  .game-main .question-code.plate{font-size:50px;padding:10px 20px}
  .game-main .question-code.region{font-size:40px}
  .game-main .question-title{font-size:23px;margin:8px 0 10px}
  .question-prompt>.muted{margin-bottom:0}
  .game-main .options{gap:10px}
  .game-main .option{min-height:64px;padding:12px 14px;gap:10px}
  .game-main .option strong{font-size:19px}
  .answer-panel{align-self:start}
  .game-main .clue-title{font-size:23px;line-height:1.65;text-align:left}
  .question-panel.has-learning{row-gap:12px}
  .question-panel.has-learning .question-prompt{grid-column:1;grid-row:1}
  .question-panel.has-learning .answer-panel{grid-column:2;grid-row:1 / span 2}
  .question-panel>.learning-card{grid-column:1;grid-row:2;align-self:start;margin:0 26px 0 0;font-size:13px}
}
@media(max-width:650px){
  .game-main{padding-top:12px}
  .quiz-topbar{gap:12px}
  .quiz-topbar .meter-title{font-size:11px;gap:8px}
  .quiz-topbar .player-toolbar .btn{padding:10px 12px;font-size:12px}
  .game-main .question-panel{padding:20px 16px}
  .game-main .question-code{margin-bottom:16px}
}
/* 手机先展示登录/游客入口，避免首屏被故事插画占满。 */
@media(max-width:650px){.login-grid .login-panel{order:0}.login-grid .login-story{order:1}.login-grid .login-story .world-art{max-height:180px}}

/* 图片选项保持双列；已答题仍清晰显示原车标。 */
.options.image-options{grid-template-columns:repeat(2,minmax(0,1fr))}.image-options .option{min-height:112px;padding:12px 16px;gap:10px}.image-options .option:disabled{opacity:1}.image-options .option>.icon{position:absolute;right:10px;bottom:10px}.image-options .option .option-brand-name{font-size:14px;line-height:1.5}
@media(max-width:600px){.image-options .option{padding:10px;min-height:110px}.image-options .option-logo{height:70px;margin:4px 12px}}