:root{font-family:'Segoe UI','Malgun Gothic',sans-serif;color:#202638;background:#f6f7fb;--blue:#445ddd}*{box-sizing:border-box}body{margin:0}main{max-width:620px;margin:auto;padding:24px 20px 40px}button,select{font:inherit}button,a,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer;min-height:46px;border:1px solid #dde1ed;border-radius:12px;background:white;color:inherit;padding:10px 14px}button:disabled{cursor:default}button:focus-visible,a:focus-visible,select:focus-visible{outline:3px solid #445ddd;outline-offset:3px}[hidden]{display:none!important}.back{font-size:12px;text-decoration:none;color:#626b80}header{padding:36px 0 24px}.eyebrow{font-size:12px;color:#5364b9}h1{font-size:clamp(30px,7vw,42px);letter-spacing:-1.5px;line-height:1.3;margin:12px 0}header p{font-size:13px;color:#697185}.modes{display:flex;background:#e9ecf4;border-radius:14px;padding:4px;gap:3px}.modes button{flex:1;border:0;background:transparent;font-size:13px;padding:10px 4px}.modes button[aria-pressed=true]{background:white;box-shadow:0 2px 6px #17224c12;color:var(--blue);font-weight:700}#wrong-count{font-size:10px}.categories{display:flex;gap:8px;margin-top:24px}.categories button{flex:1;font-size:12px}.categories button[aria-pressed=true]{background:#eaf0ff;border-color:#adbaff;color:#334bc3}.hint{font-size:12px;color:#697185;margin:16px 0}.word{padding:26px;background:white;border:1px solid #e2e6ef;border-radius:22px;box-shadow:0 8px 26px #29355706}.label{font-size:10px;color:#697185;letter-spacing:1px}h2{font-size:29px;margin:12px 0 4px;letter-spacing:-1px}.english{color:#5666bb;font-size:14px}.definition{font-size:19px;line-height:1.65;word-break:keep-all;margin:22px 0}.example{background:#f4f6fb;border-radius:12px;padding:16px;font-size:13px;line-height:1.8;color:#596379}.example b{display:block;color:#30394e;font-size:11px;margin-bottom:5px}.pager{display:flex;justify-content:space-between;align-items:center;margin:16px 0;font-size:12px;color:#697185}.pager button{width:56px}.visual{height:130px;border-radius:12px;margin-top:20px;background:#f1f3fa;display:flex;align-items:center;justify-content:center;gap:16px;overflow:hidden}.square{width:62px;height:62px;background:#657ae9;display:grid;place-items:center;color:white;font-size:12px}.pixel{width:100px;height:65px;background:repeating-conic-gradient(#657ae9 0% 25%,#d1d8fc 0% 50%) 0/20px 20px}.padding-box{padding:20px;background:#d1d8fc;border:2px solid #657ae9}.padding-box span{display:block;background:white;padding:8px;font-size:12px}.space-demo{display:flex;gap:32px}.type-demo{font:700 38px Georgia,serif;color:#5364b9}.gradient-demo{width:180px;height:62px;background:linear-gradient(90deg,#7186f1,#e8a1c3);border-radius:9px}.shadow-demo{box-shadow:8px 10px 12px #24377155;border-radius:8px}.primary{background:var(--blue);color:white;border-color:var(--blue);width:100%;margin-top:16px;font-weight:600}.setup{padding:24px 0}.setup h2{font-size:25px}.setup p,.result p{font-size:14px;line-height:1.8;color:#697185}.setup label{display:block;margin:16px 0;font-size:13px}.setup select{display:block;width:100%;min-height:46px;padding:10px;margin-top:8px;border:1px solid #d8ddea;border-radius:10px;background:white;color:#202638}.quiz-top{display:flex;justify-content:space-between;align-items:center;margin:22px 0 12px;font-size:13px}.meter{height:5px;background:#e2e7f5;border-radius:5px;margin-bottom:20px}.meter i{display:block;height:100%;background:var(--blue);border-radius:5px}.question{font-size:20px;line-height:1.65;margin:14px 0 20px}.answers{display:grid;grid-template-columns:1fr 1fr;gap:10px}.answers button{min-height:70px;font-size:14px}.answers small{display:block;font-size:11px;margin-top:5px;color:#697185}.answers .correct{border:2px solid #258568;background:#eaf8f1}.answers .incorrect{border:2px solid #c64b57;background:#fff0f1}.feedback{font-size:14px;line-height:1.8;margin:20px 0}.feedback b{display:block}.result{padding:24px 0}.review-card{background:white;border:1px solid #e2e6ef;padding:20px;border-radius:15px;margin:12px 0}.review-card h3{margin:0 0 8px}.review-card p{font-size:14px;line-height:1.8}.review-card button{font-size:12px}footer{text-align:center;margin-top:36px;font-size:11px;color:#70798c;line-height:1.8}footer a{color:#65718c}code{overflow-wrap:anywhere}@media(max-width:360px){main{padding:20px 14px}.word{padding:22px}.definition{font-size:18px}.categories button{padding:8px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}
@media(max-width:620px){header{padding:24px 0 16px}h1{font-size:30px;margin:10px 0}header p{font-size:12px}.categories{margin-top:18px}.word{padding:22px}.definition{margin:18px 0;font-size:18px}.example{padding:13px}.hint{margin:12px 0}footer{margin-top:24px}}

.search-label{display:block;font-size:12px;color:#697185;margin:18px 0 7px}#term-search{width:100%;min-height:46px;border:1px solid #d8ddea;border-radius:12px;background:white;padding:12px 14px;color:#202638;font-family:inherit;font-size:14px}#term-search:focus-visible{outline:3px solid #445ddd;outline-offset:3px}.english,.answers small,.review-card small{overflow-wrap:anywhere}.answers button{min-width:0}

.layer-sample{position:relative;width:160px;height:100px}.layer-sample span{position:absolute;display:grid;place-items:center;width:105px;height:55px;border:1px solid #455bbc;border-radius:8px;background:#d4ddff;color:#293a85;font-size:12px;box-shadow:0 4px 8px #29355720}.layer-sample span:nth-child(1){left:0;top:0}.layer-sample span:nth-child(2){left:25px;top:23px;background:#b1c0ff}.layer-sample span:nth-child(3){left:50px;top:46px;background:#7289ec;color:white}.alpha-sample{width:96px;height:85px;display:grid;place-items:center;background:repeating-conic-gradient(#e0e4ef 0% 25%,white 0% 50%) 0/16px 16px;border:1px solid #d8ddea;border-radius:6px}.alpha-sample span{color:#657ae9;font-size:58px;line-height:1}.art-note{font-size:11px;line-height:1.8;color:#596379}
.layer-sample span{place-items:start;padding:5px 8px}
/* Stable navigation: independent of card text and line wrapping. */
.pager{position:fixed;z-index:20;bottom:max(12px,env(safe-area-inset-bottom));left:50%;transform:translateX(-50%);width:min(580px,calc(100% - 28px));height:64px;margin:0;padding:8px 12px;background:#f6f7fbf5;border:1px solid #dce2ef;border-radius:16px;box-shadow:0 4px 22px #29355718;backdrop-filter:blur(10px)}
.pager button{height:46px;flex:none}.pager span{font-variant-numeric:tabular-nums}body:not(.quiz-mode) main{padding-bottom:110px}
/* Match the kana speed-quiz environment, scoped to this page only. */
body.quiz-mode{color-scheme:dark;background:radial-gradient(circle at 50% 5%,#283a51,#101722 60%);color:#f7f9fc;min-height:100dvh}
.quiz-mode main{max-width:540px;padding:20px 24px 24px}.quiz-mode main>header,.quiz-mode footer{display:none}.quiz-mode .back{color:#c8d2df}.quiz-mode .modes{margin:18px 0 22px;background:#1b2737}.quiz-mode .modes button{color:#d8e0eb}.quiz-mode .modes button[aria-pressed=true]{background:#24493f;color:#91d4c3}.quiz-mode button:focus-visible{outline-color:white}
.speed-start{text-align:center;padding:24px 0}.speed-eyebrow{color:#91d4c3;font-size:.78rem;font-weight:800;letter-spacing:.14em;margin:0 0 14px}.speed-start h2{font-size:clamp(2rem,8vw,2.8rem);line-height:1.23;letter-spacing:-.055em;margin:0}.count-picker{margin:38px 0 28px}.count-picker p{color:#c8d2df;font-size:1rem}.picker-row{display:flex;align-items:center;justify-content:center;gap:30px}.picker-row output{min-width:82px;font-size:3rem;font-weight:800;font-variant-numeric:tabular-nums}.picker-row button{border:0;color:#91d4c3;background:transparent;border-radius:50%;width:56px;height:56px;font-size:1.25rem}.picker-row button:disabled{opacity:.3}.script-picker{border:0;padding:0;margin:0 0 22px}.script-picker legend{padding:0;margin:0 auto 13px;color:#c8d2df;font-size:1rem}.script-options{display:grid;gap:9px}.script-options label{position:relative;display:block;cursor:pointer}.script-options input{position:absolute;opacity:0}.script-options span{display:block;border:1px solid #596b82;border-radius:12px;padding:13px 12px;background:#1b2737;color:#dbe4ef;font-weight:700}.script-options input:checked+span{border-color:#91d4c3;background:#24493f;color:#f7f9fc;box-shadow:inset 0 0 0 1px #91d4c3}.script-options input:focus-visible+span{outline:3px solid white;outline-offset:2px}.speed-help{color:#c8d2df;font-size:12px;line-height:1.8}.quiz-mode .primary{min-height:56px;border-radius:14px;font-weight:800;font-size:1rem;border:0;color:#0d1b25;background:#91d4c3;box-shadow:0 8px 20px #0004}.quiz-mode .secondary{display:block;margin-top:10px;width:100%;min-height:56px;border-radius:14px;border:1px solid #71839a;color:#f7f9fc;background:transparent}
.speed-game{display:flex;flex-direction:column;min-height:calc(100dvh - 145px);padding-top:8px}.quiz-header{text-align:center;color:#d8e0eb;font-size:.94rem;font-weight:700}.progress-track,.timer-track{overflow:hidden;border-radius:99px;background:#354254}.progress-track{height:5px;margin:12px auto 0;width:64%}#progress-fill{height:100%;background:#91d4c3}.question-card{display:grid;place-items:center;flex-shrink:0;height:250px;margin:28px auto 18px;width:100%;padding:22px;border:1px solid #53647b;border-radius:24px;background:#1b2737;box-shadow:0 18px 35px #0003;overflow:auto}#question{margin:0;max-width:100%;font-size:clamp(17px,4.7vw,24px);font-weight:700;line-height:1.65;text-align:center;overflow-wrap:anywhere;word-break:keep-all}.timer-track{height:8px;flex-shrink:0;width:47%;margin:0 auto 28px}#timer-fill{height:100%;width:100%;transform-origin:left;background:#91d4c3}.quiz-mode .answers{grid-template-columns:repeat(2,minmax(0,1fr));gap:13px;margin-top:auto}.quiz-mode .answers button{height:100px;overflow:auto;border:1px solid #596b82;color:#f7f9fc;background:#1b2737;border-radius:14px;padding:8px;font-weight:750;font-size:15px;overflow-wrap:anywhere}.quiz-mode .answers small{color:#b9c6d6;font-size:11px}.quiz-mode .answers .correct{background:#277962;border-color:#91d4c3}.quiz-mode .answers .incorrect{background:#913f4c;border-color:#ffb6bf}.quiz-mode .feedback{height:52px;overflow:auto;margin:14px 0 0;text-align:center;color:#dce5ef;font-weight:800;font-size:14px;line-height:1.6}.speed-result{margin:32px 0;border:1px solid #53647b;border-radius:24px;padding:36px 25px 25px;background:#1b2737;box-shadow:0 18px 35px #0003;text-align:center}.speed-result h2{font-size:1.7rem;margin:0}.stats{margin:32px 0;display:grid;grid-template-columns:1fr 1fr;gap:1px;background:#43546b;border:1px solid #43546b;border-radius:14px;overflow:hidden}.stats div{padding:17px 8px;background:#202e40}.stats dt{color:#b9c6d6;font-size:.8rem}.stats dd{margin:5px 0 0;font-size:1.25rem;font-weight:800;font-variant-numeric:tabular-nums}@media(max-height:740px){.question-card{height:190px;margin-top:20px}.timer-track{margin-bottom:20px}.quiz-mode .answers button{height:86px}}@media(max-width:360px){.quiz-mode main{padding-left:16px;padding-right:16px}.quiz-mode .answers button{font-size:14px}}
/* Keep complete Korean/English choices readable on compact phones. */
@media(max-height:740px){
 .quiz-mode main{padding-top:10px;padding-bottom:10px}
 .quiz-mode .modes{margin:6px 0 8px}
 .speed-game{min-height:0;padding-top:0}
 .quiz-header{font-size:12px}
 .progress-track{margin-top:6px}
 .question-card{height:140px;margin:10px 0;padding:10px}
 #question{font-size:16px;line-height:1.45}
 .timer-track{height:6px;margin-bottom:10px}
 .quiz-mode .answers{gap:8px;margin-top:0}
 .quiz-mode .answers button{height:100px;font-size:14px;line-height:1.3;padding:6px}
 .quiz-mode .answers small{font-size:11px;line-height:1.25}
 .quiz-mode .feedback{height:38px;margin-top:8px;font-size:12px}
}