@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;600;700;800;900&display=swap');
:root{--bg:#f6f7f2;--ink:#20372c;--green:#24694e;--lime:#d9ef81;--muted:#788277;--line:#dfe4d9}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:'Noto Sans SC','Microsoft YaHei',sans-serif;font-size:15px}button,input,select{font:inherit}button,a,select{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #86b858;outline-offset:4px}a{color:inherit;text-decoration:none}header{max-width:1280px;margin:auto;height:100px;padding:0 44px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:10px;font-size:25px;font-weight:800}.brandmark{background:var(--green);color:var(--lime);font-size:21px;width:36px;height:39px;display:grid;place-items:center;border-radius:12px 12px 12px 2px}.brand-sub{font-size:11px;font-weight:400;color:var(--muted);margin-left:16px;letter-spacing:1px}nav{display:flex;gap:28px}nav button{background:none;border:0;padding:12px 0;color:var(--muted);font-size:13px}nav .active{color:var(--green);font-weight:700}nav span{margin-left:9px}main{max-width:1192px;margin:auto;padding:0 0 50px}.hero{display:grid;grid-template-columns:1.1fr 1fr;gap:50px;padding:64px 0 54px;align-items:center}.eyebrow{font-size:11px;letter-spacing:2px;font-weight:700;color:var(--green);display:flex;align-items:center;gap:10px}.dot{height:7px;width:7px;border-radius:50%;background:#76a358;display:inline-block}h1{font-size:54px;line-height:1.33;letter-spacing:-2px;margin:22px 0;font-weight:800}h1 em{font-style:normal;color:var(--green);position:relative}h1 em:after{content:'';position:absolute;left:0;right:0;bottom:-5px;border-bottom:5px solid var(--lime);z-index:-1}.intro{color:#7a8277;line-height:1.9;font-size:14px;margin-bottom:27px}.primary{background:var(--green);color:white;border:0;border-radius:9px;padding:15px 24px;font-size:14px;font-weight:600;display:inline-flex;align-items:center;justify-content:center;gap:36px}.primary:hover{background:#184d39;transform:translateY(-1px)}.subtext{display:inline-block;margin-left:16px;font-size:11px;color:var(--muted)}.hero-art{height:326px;position:relative;border-radius:18px;background:#e9eee1;overflow:hidden;display:grid;place-items:center}.orb{width:255px;height:255px;border:1px solid #c7d4b9;border-radius:50%;position:absolute;background:repeating-linear-gradient(0deg,transparent,transparent 41px,#d0dbc5 42px,transparent 43px);transform:rotate(-16deg)}.orb:before,.orb:after{content:'';position:absolute;inset:0 60px;border:1px solid #c7d4b9;border-radius:50%}.orb:after{inset:0 100px}.orbit{position:absolute;inset:28px -65px;border:1px solid #d6dfcd;transform:rotate(-20deg);border-radius:50%}.flag-card{position:absolute;background:white;padding:15px 20px 12px;box-shadow:0 10px 30px #29452a10;border:1px solid #e8ebdf;border-radius:10px;text-align:center;font-size:10px;letter-spacing:1px;color:#86907f}.flag-card img{display:block;width:88px;height:57px;object-fit:contain;margin-bottom:10px}.flag-card.one{left:45px;top:43px;transform:rotate(-12deg)}.flag-card.two{right:30px;top:67px;transform:rotate(10deg)}.flag-card.three{left:155px;bottom:33px;transform:rotate(-4deg)}.map-label{position:absolute;bottom:20px;left:22px;color:#79906c;font-size:9px;letter-spacing:3px}.spark{position:absolute;right:48px;bottom:48px;color:#6c8c48;font-size:39px}.art-tag{position:absolute;right:26px;top:20px;font-size:9px;color:#6c8060;letter-spacing:1px}.stats{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:25px 0}.stat{display:flex;align-items:center;justify-content:center;gap:15px;border-right:1px solid var(--line)}.stat:last-child{border:0}.stat strong{font-size:29px;letter-spacing:-1px}.stat span{font-size:12px;color:var(--muted)}.section-head{display:flex;justify-content:space-between;align-items:end;margin:43px 0 23px}.section-head h2{font-size:22px;margin:0 0 6px}.section-head p{font-size:12px;color:var(--muted);margin:0}.section-head>span{font-size:10px;letter-spacing:1px;color:var(--muted)}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.quiz-card{background:#fff;border:1px solid var(--line);border-radius:13px;padding:26px;display:flex;flex-direction:column;position:relative;transition:transform .2s,border-color .2s}.quiz-card:hover{transform:translateY(-4px);border-color:#a6baa2}.card-top{display:flex;align-items:center;justify-content:space-between}.icon{height:46px;width:46px;background:#eef3e6;border-radius:12px;display:grid;place-items:center;font-size:24px}.pill{padding:5px 9px;font-size:10px;border-radius:5px;background:#f3f5ef;color:#7c8776}.quiz-card h3{font-size:19px;margin:22px 0 9px}.quiz-card p{color:var(--muted);line-height:1.8;font-size:12px;margin:0;min-height:44px}.card-bottom{border-top:1px solid #edf0e8;margin-top:22px;padding-top:18px;display:flex;justify-content:space-between;align-items:center}.card-bottom span{font-size:10px;color:var(--muted)}.card-bottom button{border:0;background:none;color:var(--green);font-size:12px;font-weight:600;padding:5px}.settings{display:flex;justify-content:space-between;gap:16px;align-items:center;margin:22px 0 0;background:#edf1e6;border-radius:9px;padding:16px 20px;font-size:12px;color:#697a61}.settings label{display:flex;align-items:center;gap:8px}.settings select{border:0;background:transparent;color:var(--green);font-weight:600;padding:4px}.settings input{accent-color:var(--green)}.note{font-size:11px;color:var(--muted);margin-top:17px;line-height:1.8}.study{margin-top:38px;display:flex;align-items:center;gap:15px;border-top:1px solid var(--line);padding-top:25px}.study p{margin:0;font-size:12px;color:var(--muted)}.study strong{display:block;color:var(--ink);font-size:13px;margin-bottom:4px}footer{max-width:1192px;margin:auto;border-top:1px solid var(--line);padding:25px 0 30px;display:flex;justify-content:space-between;font-size:10px;color:#8a9284;letter-spacing:1px}footer i{font-style:normal;margin:0 10px;color:#bcc5b2}.game{max-width:800px;margin:42px auto;min-height:550px}.game-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.text-btn{border:0;background:transparent;padding:8px 0;color:var(--muted);font-size:12px}.game-meta{display:flex;gap:24px;align-items:center;font-size:12px}.clock{font-variant-numeric:tabular-nums;padding:8px 15px;background:#e9eee1;border-radius:6px;color:var(--green);font-weight:700}.clock.urgent{background:#ffe7df;color:#a0442a}.progress{height:4px;background:#e1e7d9;border-radius:4px;margin-bottom:35px}.progress>div{height:100%;background:var(--green);border-radius:4px;transition:width .3s}.question-panel{background:white;border:1px solid var(--line);border-radius:16px;padding:36px;text-align:center}.question-panel .eyebrow{justify-content:center}h2.question{font-size:27px;margin:16px 0 28px}.question-flag{height:150px;max-width:260px;object-fit:contain;margin:0 auto 28px;filter:drop-shadow(0 4px 7px #00000012)}.capital{font-size:43px;color:var(--green);font-weight:700;margin:35px 0 45px}.options{display:grid;grid-template-columns:1fr 1fr;gap:12px;text-align:left}.option{border:1px solid var(--line);background:#fff;border-radius:8px;padding:17px 18px;display:flex;align-items:center;gap:14px;color:var(--ink)}.option:hover:not(:disabled){background:#f3f7ec;border-color:#96b48a}.option kbd{font-family:inherit;font-size:10px;border:1px solid var(--line);border-radius:4px;padding:3px 7px;color:#8c9785}.option.correct{background:#e7f2dc;border-color:#7d9e60;color:#365724}.option.wrong{background:#fcece5;border-color:#c8957b;color:#9c4f37}.option:disabled{cursor:default}.feedback{min-height:30px;font-size:13px;margin:24px 0 13px;line-height:1.8}.game-actions{display:flex;justify-content:space-between;align-items:center;margin-top:20px}.game-actions .primary{padding:12px 23px}.keyboard{font-size:10px;color:var(--muted)}.typing-row{display:flex;gap:10px;margin:20px 0}.typing-row input{min-width:0;flex:1;padding:14px 15px;border:1px solid var(--line);border-radius:8px;background:white;color:var(--ink)}.typing-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:9px;margin:24px 0}.country-slot{padding:12px 4px;border:1px dashed #d8dfcf;border-radius:6px;font-size:12px;color:#a1ac98;background:#f9faf6}.country-slot.found{background:#e9f1df;border:1px solid #d4e1c7;color:var(--green)}.result{text-align:center;background:white;border:1px solid var(--line);border-radius:16px;padding:40px;margin-bottom:25px}.result-score{font-size:76px;font-weight:800;color:var(--green);letter-spacing:-3px}.result-score small{font-size:24px;color:#9ca78e;letter-spacing:0}.result h2{font-size:27px;margin:12px 0}.result p{color:var(--muted);font-size:13px}.result-buttons{display:flex;gap:12px;justify-content:center;margin-top:25px;flex-wrap:wrap}.secondary{padding:12px 22px;border:1px solid var(--line);background:var(--bg);color:var(--green);border-radius:8px}.review-title{display:flex;justify-content:space-between;align-items:center;font-size:17px}.review-item{display:flex;gap:15px;align-items:center;border-bottom:1px solid var(--line);padding:17px 0;font-size:13px}.review-item img{width:42px;height:29px;object-fit:contain}.review-item small{display:block;color:var(--muted);margin-top:5px;font-size:11px}.review-mark{margin-left:auto;color:var(--green)}.review-mark.miss{color:#aa6e4e}dialog{border:1px solid var(--line);border-radius:15px;padding:28px;max-width:550px;width:calc(100% - 32px);color:var(--ink)}dialog::backdrop{background:#172d2066;backdrop-filter:blur(3px)}.dialog-head{display:flex;justify-content:space-between;align-items:center}.dialog-head h2{font-size:21px}.dialog-head button{background:none;border:0;font-size:28px;color:var(--muted)}.history-row{padding:17px 0;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:12px;font-size:12px}.muted{color:var(--muted)}.small{font-size:11px}.empty{padding:35px 0;text-align:center;color:var(--muted);font-size:13px}.hide{display:none!important}@media(min-width:1400px){header{max-width:1360px}main,footer{max-width:1192px}.hero{padding:74px 0 62px}}@media(max-width:1279px){main,footer{margin-left:44px;margin-right:44px}h1{font-size:46px}.hero{gap:30px}.flag-card.one{left:20px}.flag-card.two{right:20px}.flag-card.three{left:110px}.quiz-card{padding:23px}}@media(max-width:760px){header{height:78px;padding:0 22px}.brand{font-size:22px}.brand-sub{display:none}nav{gap:18px}nav button{font-size:11px}main,footer{margin:0 22px}.hero{grid-template-columns:1fr;padding:38px 0 30px;gap:30px}h1{font-size:41px;letter-spacing:-1px}.hero-art{height:260px}.flag-card.one{left:30px;top:25px}.flag-card.two{right:30px;top:35px}.flag-card.three{left:calc(50% - 65px);bottom:20px}.orb{width:220px;height:220px}.hero-copy .intro{font-size:13px}.stat{flex-direction:column;gap:3px}.stat strong{font-size:26px}.stat span{font-size:10px}.stats{padding:19px 0}.cards{grid-template-columns:1fr;gap:13px}.quiz-card{padding:22px}.quiz-card h3{margin-top:17px}.quiz-card p{min-height:0}.settings{flex-wrap:wrap;font-size:11px;gap:8px}.settings>span{width:100%;margin-bottom:5px}.section-head>span{display:none}.section-head{margin-top:32px}footer{font-size:9px;line-height:1.8;gap:15px;flex-direction:column}.game{margin-top:24px}.game-meta{gap:10px;font-size:11px}.question-panel{padding:25px 18px}h2.question{font-size:23px}.question-flag{height:120px}.option{padding:14px 11px;gap:8px;font-size:13px}.keyboard{display:none}.capital{font-size:34px}.typing-grid{grid-template-columns:repeat(3,1fr)}.result{padding:30px 20px}.result-score{font-size:65px}.typing-row .primary{padding:13px}.study{align-items:flex-start}.subtext{font-size:10px;margin-left:10px}}

@media(max-width:760px){h1{font-size:34px}.art-tag{display:none}}

.category-tabs{display:flex;gap:10px;flex-wrap:wrap;margin:22px 0}.category-tabs button{background:transparent;border:1px solid var(--line);color:var(--muted);padding:9px 17px;border-radius:24px;font-size:12px}.category-tabs button.selected{background:var(--green);border-color:var(--green);color:white}.trivia-symbol{font-size:58px;color:#73964f;background:#eef4e4;display:grid;place-items:center;width:100px;height:100px;border-radius:50%;margin:8px auto 30px}.review-icon{font-size:28px;min-width:42px;color:var(--green)}.review-prompt{font-size:12px;color:var(--muted);margin:0 0 8px}.review-item>div{min-width:0;flex:1}.review-item small{line-height:1.9}.review-mark{white-space:nowrap}.option{overflow-wrap:anywhere;min-width:0;line-height:1.6}.question-panel h2.question{line-height:1.6}.note a{text-decoration:underline}@media(max-width:760px){.category-tabs{gap:7px}.category-tabs button{padding:8px 12px;font-size:11px}.question-panel h2.question{font-size:21px}.options .option{font-size:12px}.review-mark{font-size:10px}.brand-sub{display:none}}