:root{--bg:#f7f8f3;--paper:#fff;--ink:#19332d;--muted:#72817b;--line:#e3eae5;--green:#176754;--mint:#e8f4ee;--gold:#e8b85f;--shadow:0 15px 40px #183d2e0d}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:'DM Sans',sans-serif}.top{height:66px;padding:0 max(calc((100% - 1000px)/2),22px);background:var(--paper);border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center}.brand{color:var(--green);font-size:18px;font-weight:800;text-decoration:none}.brand span{margin-left:8px;color:var(--ink);font-size:13px;font-weight:500}.brand-note{color:var(--muted);font-size:12px}main{max-width:1000px;margin:0 auto;padding:0 22px}.intro{padding:38px 4px 22px}.eyebrow{margin:0 0 9px;color:var(--green);font-size:10px;font-weight:800;letter-spacing:1.4px}.intro h1{margin:0;font-size:clamp(34px,6vw,48px);line-height:1.1;letter-spacing:-1.8px}.intro h1 em{color:var(--green);font-style:normal}.intro-copy{margin:13px 0 0;color:var(--muted);font-size:14px}.lesson-panel,.work-panel{margin:0 0 16px;padding:20px 22px;background:var(--paper);border:1px solid var(--line);border-radius:17px;box-shadow:var(--shadow)}.section-title{display:flex;align-items:center;justify-content:space-between;gap:14px}.section-title .eyebrow{margin:0 0 4px}.section-title h2{font-size:19px;margin:0}.lesson-count,.lesson-progress{font-size:12px;color:var(--muted)}.lesson-list{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:8px;margin-top:15px}.lesson-choice{display:flex;align-items:center;gap:8px;min-width:0;padding:9px 8px;border:1px solid var(--line);border-radius:11px;background:#fff;text-align:left;color:var(--ink);cursor:pointer;font:inherit;transition:.15s}.lesson-choice:hover{border-color:#a6c8b5;transform:translateY(-1px)}.lesson-choice.active{border-color:var(--green);background:var(--mint)}.lesson-num{display:grid;place-items:center;flex:none;width:29px;height:29px;border-radius:9px;background:#f2f5f2;color:var(--green);font-size:11px;font-weight:800}.active .lesson-num{background:var(--green);color:white}.lesson-name{overflow:hidden;font-size:11px;font-weight:600;line-height:1.25}.lesson-mark{margin-left:auto;flex:none;color:var(--muted);font-size:10px}.work-panel{padding:22px;min-height:410px;margin-bottom:48px}.work-title{margin-bottom:16px}.mode-nav{display:flex;gap:7px;padding-bottom:10px;border-bottom:1px solid var(--line);overflow-x:auto}.mode{padding:9px 12px;border:0;border-radius:9px;background:transparent;color:var(--muted);white-space:nowrap;cursor:pointer;font:600 12px 'DM Sans',sans-serif}.mode:hover,.mode.active{background:var(--mint);color:var(--green)}.options{display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:14px 0}.option-hint{color:var(--muted);font-size:12px}.option-hint.wide{flex-basis:100%;margin-top:2px}.pill,.secondary,.primary{min-height:38px;padding:8px 13px;border-radius:10px;font:700 12px 'DM Sans',sans-serif;cursor:pointer}.pill,.secondary{border:1px solid var(--line);background:var(--paper);color:var(--ink)}.pill.selected{border-color:var(--green);background:var(--mint);color:var(--green)}.primary{border:1px solid var(--green);background:var(--green);color:white}.primary:hover{background:#115342}.secondary:hover,.pill:hover{border-color:#9fc3af}.primary:disabled,.secondary:disabled{opacity:.42;cursor:not-allowed}.workspace{min-height:200px}.welcome,.result{text-align:center;padding:25px 12px}.welcome-icon,.result-icon{display:grid;place-items:center;width:52px;height:52px;margin:0 auto 11px;border-radius:16px;background:var(--mint);color:var(--green);font:700 25px 'Noto Sans JP',sans-serif}.result-icon{font-family:'DM Sans',sans-serif}.welcome h3,.result h3{margin:6px 0;font-size:20px}.welcome p,.result p{max-width:490px;margin:8px auto;color:var(--muted);font-size:13px;line-height:1.6}.flash-top,.quiz-top,.game-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:0 auto 10px;max-width:570px;color:var(--muted);font-size:11px}.tag{color:var(--green);font-weight:800;letter-spacing:.9px}.flashcard,.quiz-card{position:relative;max-width:570px;min-height:310px;margin:auto;padding:24px;border:1px solid var(--line);border-radius:18px;background:linear-gradient(160deg,#fff 70%,#f7fbf8);text-align:center;box-shadow:0 12px 34px #193d2e0b}.card-caption{color:var(--muted);font-size:10px;font-weight:700;letter-spacing:1px}.word-jp{margin:17px 0 10px;color:var(--ink);font:500 clamp(37px,8vw,58px)/1.25 'Noto Sans JP',sans-serif;overflow-wrap:anywhere}.reading,.romaji,.meaning{display:flex;justify-content:center;align-items:center;gap:10px;margin:8px 0;font-size:14px}.reading span,.romaji span,.meaning span{color:var(--muted);font-size:10px;font-weight:700;letter-spacing:.5px}.reading b{font:500 16px 'Noto Sans JP',sans-serif;color:var(--green)}.romaji b{font-weight:600}.meaning{display:flex;margin:18px auto 5px;padding:13px;border-radius:12px;background:var(--mint);color:var(--green)}.meaning span{display:none}.meaning b{font-size:18px}.show-meaning .meaning{display:flex}.reveal{margin-top:13px;padding:8px 13px;border:1px solid #bfd9ca;border-radius:9px;background:#fff;color:var(--green);font:700 12px 'DM Sans',sans-serif;cursor:pointer}.card-footer{margin-top:17px;color:#94a39b;font-size:10px}.card-controls{display:flex;justify-content:center;gap:9px;margin:12px auto}.quiz-top{max-width:530px}.timer{color:#a64d34;font-size:17px;font-weight:800}.quiz-card{max-width:530px;min-height:360px}.quiz-label{margin:0;color:var(--muted);font-size:12px}.quiz-card .word-jp{margin:9px 0}.quiz-reading{color:var(--green);font:14px 'Noto Sans JP',sans-serif}.quiz-options{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:18px}.answer{min-height:46px;padding:9px;border:1px solid var(--line);border-radius:10px;background:white;color:var(--ink);cursor:pointer;font:600 12px 'DM Sans',sans-serif}.answer:hover{border-color:#a3c9b3;background:#f7fbf8}.answer:disabled{cursor:default}.answer.correct{border-color:#6cb58b;background:#e8f7ed;color:#14552b}.answer.wrong{border-color:#d99487;background:#fff0ec;color:#914434}.score-line{display:flex;align-items:center;gap:5px;margin:13px 0;color:var(--muted);font-size:11px}.score-line span{margin-left:auto}.end-review{margin-top:2px;padding:0;border:0;background:none;color:var(--muted);font:600 11px 'DM Sans',sans-serif;text-decoration:underline;cursor:pointer}.kana-card{display:grid;place-content:center;min-height:305px}.kana-big{color:var(--green);font:400 clamp(110px,22vw,170px)/1.2 'Noto Sans JP',sans-serif}.kana-romaji{font-size:22px;font-weight:700}.kana-other{margin-top:9px;color:var(--muted);font-size:12px}.kana-other b{color:var(--green);font:600 18px 'Noto Sans JP',sans-serif}.game-top{max-width:700px}.game-columns{display:grid;grid-template-columns:1fr 1fr;gap:17px;max-width:700px;margin:auto}.game-columns section{min-width:0}.game-columns h3{margin:7px 0;font-size:13px}.game-list{display:grid;gap:7px}.match-card{min-height:44px;padding:8px 10px;border:1px solid var(--line);border-radius:10px;background:white;color:var(--ink);cursor:pointer;font:500 13px 'Noto Sans JP','DM Sans',sans-serif;overflow-wrap:anywhere}.game-columns section:nth-child(2) .match-card{font:500 12px 'DM Sans',sans-serif}.match-card:hover,.match-card.chosen{border-color:#85b69b;background:var(--mint);color:var(--green)}.match-card.incorrect{border-color:#c66;background:#fff0ec}.match-card.matched{border-color:#86bf9c;background:#e8f7ed;color:#24603a}.match-card:disabled{opacity:.72;cursor:default}.game-instruction{text-align:center;color:var(--muted);font-size:11px}.restart{display:block;margin:10px auto}footer{padding:18px;color:var(--muted);text-align:center;font-size:11px;border-top:1px solid var(--line)}
@media(max-width:800px){.lesson-list{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:560px){.top{height:56px;padding:0 15px}.brand{font-size:16px}.brand span{font-size:11px}.brand-note{display:none}main{padding:0 12px}.intro{padding:28px 4px 17px}.intro h1{letter-spacing:-1px}.intro-copy{font-size:13px}.lesson-panel,.work-panel{padding:15px;border-radius:14px}.lesson-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:6px}.lesson-choice{padding:7px 6px;gap:6px}.lesson-name{font-size:10px}.lesson-num{width:26px;height:26px}.lesson-count,.lesson-progress{font-size:10px}.work-title{margin-bottom:12px}.mode-nav{margin-right:-4px}.mode{padding:8px 10px;font-size:11px}.options{gap:6px;padding:12px 0}.option-hint{flex-basis:100%;font-size:11px}.pill,.primary,.secondary{font-size:11px}.flashcard,.quiz-card{padding:19px 13px;border-radius:15px}.flashcard{min-height:300px}.word-jp{font-size:39px}.reading,.romaji{font-size:12px}.meaning{gap:4px}.meaning b{font-size:16px}.quiz-options{gap:6px}.answer{font-size:11px;min-height:48px;padding:7px}.card-controls{gap:7px}.card-controls button{flex:1;max-width:220px}.game-columns{gap:8px}.game-columns h3{font-size:12px}.match-card{padding:7px 5px;font-size:12px}.game-columns section:nth-child(2) .match-card{font-size:11px}.result{padding:20px 5px}}