:root{--bg:#f6f5ef;--paper:#fff;--ink:#202e2b;--muted:#5c6c66;--green:#245c49;--mint:#e5eee4;--line:#dce2d9;--red:#a53d32}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:Arial,'Yu Gothic','Hiragino Kaku Gothic ProN',Meiryo,sans-serif;font-size:16px;line-height:1.8}button,a,input{ -webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer}button:disabled{cursor:default;opacity:.55}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #a56521;outline-offset:4px}.shell{max-width:1120px;margin:auto;padding:0 40px}.header{height:104px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line)}.brand{display:flex;gap:12px;align-items:center;color:var(--ink);font-weight:800;font-size:23px;text-decoration:none;letter-spacing:-.7px}.brand-icon{width:36px;height:36px;border-radius:12px;background:var(--green);color:white;display:flex;align-items:center;justify-content:center;gap:3px;font:italic bold 29px Georgia;line-height:1}.brand-icon span{transform:translateY(-4px)}.edition{font-size:11px;letter-spacing:0;color:var(--muted);border:1px solid var(--line);padding:2px 8px;border-radius:20px}.header-note{font-size:13px;color:var(--muted)}main{min-height:74vh;outline:none}.home{display:grid;grid-template-columns:1.08fr 1fr;gap:64px;align-items:center;padding:64px 0 48px}.eyebrow{color:var(--green);font-size:12px;font-weight:800;letter-spacing:2px;margin:0 0 20px}.eyebrow:before{content:'';display:inline-block;width:7px;height:7px;background:var(--green);border-radius:50%;margin-right:8px}h1{font-size:clamp(32px,4vw,46px);line-height:1.5;letter-spacing:-1.5px;margin:0 0 24px}h1 em{font-style:normal;color:var(--green);position:relative}h1 em:after{content:'';display:block;height:8px;background:#c7d8ba;width:83%;margin-top:-13px;position:relative;z-index:-1}.lead{color:var(--muted);font-size:15px;margin:0 0 28px}.primary,.secondary,.text-btn{border:0;border-radius:12px;min-height:48px;padding:12px 24px;font-weight:700}.primary{color:#fff;background:var(--green)}.primary:hover{background:#173f32}.secondary{background:var(--mint);color:var(--green)}.text-btn{background:transparent;color:var(--muted);padding:8px 12px;font-size:14px}.start{width:100%;display:flex;justify-content:space-between;align-items:center}.meta{display:flex;gap:16px;font-size:13px;color:var(--muted);margin:12px 0}.visual{position:relative;background:var(--mint);border-radius:32px;padding:40px 32px;min-height:354px;overflow:hidden}.visual:after{content:'';position:absolute;width:260px;height:260px;border:1px solid #cad9c6;border-radius:50%;right:-80px;top:-100px;pointer-events:none}.visual .stamp{color:var(--green);font-size:11px;letter-spacing:2px}.phrase{font-family:Georgia,serif;font-size:47px;margin:32px 0 4px;letter-spacing:-2px;line-height:1.4}.phrase span{position:relative}.phrase span:after{content:'';position:absolute;border-bottom:3px solid var(--green);border-radius:50%;width:40px;height:18px;bottom:-13px;left:72px;transform:rotate(-7deg)}.visual p{color:var(--muted);font-size:13px}.wave{height:64px;display:flex;gap:5px;align-items:center;margin:24px 0}.wave i{display:block;width:5px;border-radius:4px;background:var(--green);height:var(--h);opacity:.8}.wave i:nth-child(3n){opacity:.35}.visual-bottom{display:flex;justify-content:space-between;font-size:12px;color:var(--green);border-top:1px solid #c9d8c5;padding-top:16px}.notice{background:#eeeee6;border-radius:12px;padding:16px 20px;color:#536057;font-size:13px;line-height:1.8}.notice strong{color:var(--ink)}.home-bottom{display:grid;grid-template-columns:1fr 1fr 1fr;gap:24px;margin:32px 0 48px}.feature{border-top:1px solid var(--line);padding-top:16px}.feature b{font-size:14px}.feature small{display:block;color:var(--muted);font-size:13px}.feature .number{font:italic 22px Georgia;color:var(--green);margin-right:8px}.quiz{max-width:720px;margin:32px auto 48px}.quiz-top{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--muted);margin-bottom:16px}.track{height:5px;background:var(--line);border-radius:8px;overflow:hidden;margin-bottom:28px}.track>span{display:block;background:var(--green);height:100%;transition:width .25s}.question-card{background:var(--paper);border:1px solid var(--line);border-radius:24px;padding:32px}.question-heading{display:flex;justify-content:space-between;align-items:center}.pill{font-size:12px;font-weight:700;border-radius:20px;background:var(--mint);color:var(--green);padding:4px 12px}.q-number{font:italic 24px Georgia;color:#77887d}h2{font-size:25px;line-height:1.5;margin:24px 0 8px;letter-spacing:-.5px}.sub{font-size:14px;color:var(--muted);margin:0 0 24px}.listen-area{text-align:center;padding:12px 0 20px}.listen{width:92px;height:92px;border-radius:50%;border:0;background:var(--green);color:white;box-shadow:0 0 0 10px #f0f4ed;font-size:28px;display:block;margin:12px auto 24px}.listen.playing{animation:breathe 1s infinite}.listen-caption{font-size:13px;color:var(--muted);min-height:24px}.rates{display:flex;justify-content:center;gap:4px;margin:12px 0}.rates button{border:0;background:transparent;border-radius:8px;padding:8px 16px;color:var(--muted);min-height:44px;font-size:13px}.rates button[aria-pressed=true]{background:var(--mint);color:var(--green);font-weight:700}.choices{display:grid;gap:12px;margin-top:16px}.choice{display:flex;align-items:center;gap:16px;border:1px solid var(--line);background:white;border-radius:12px;text-align:left;padding:14px 16px;color:var(--ink);font-size:19px}.choice .letter{display:grid;place-items:center;width:28px;height:28px;border-radius:8px;background:var(--bg);font-size:12px;color:var(--muted)}.choice:hover:not(:disabled){border-color:var(--green);background:#f7faf5}.choice.selected{border:2px solid var(--green);padding:13px 15px;background:#f5f8f1}.choice.correct{border-color:var(--green);background:var(--mint)}.choice.wrong{border-color:var(--red);background:#fbefec}.choice:disabled{opacity:1}.choice .verdict{margin-left:auto;font-size:12px;font-weight:700}.card-action{width:100%;margin-top:24px}.audio-note{margin-top:20px;font-size:12px;color:var(--muted);text-align:center}.feedback{margin-top:24px;border-top:1px solid var(--line);padding-top:24px}.feedback h2{margin:0;color:var(--green);font-size:20px}.feedback h2.miss{color:var(--red)}.answer-sentence{font:30px/1.6 Georgia,serif;margin:20px 0 0;overflow-wrap:anywhere}.answer-sentence mark{background:#e2edda;color:var(--green);border-radius:4px;padding:0 2px}.translation{color:var(--muted);font-size:14px;margin:4px 0 20px}.link-detail{background:var(--bg);border-radius:12px;padding:20px}.link-word{font:24px/1.5 Georgia,serif;color:var(--green);margin:0 0 4px}.kana{color:var(--muted);font-size:13px}.explanation{font-size:14px;margin:12px 0 0}.compare{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:20px}.compare button{padding:12px 8px;font-size:13px}.practice{margin-top:24px;border-top:1px solid var(--line);padding-top:20px}.practice summary{cursor:pointer;font-weight:700;font-size:14px;padding:8px 0}.practice p{font-size:13px;color:var(--muted)}.record-actions{display:flex;flex-wrap:wrap;gap:8px}.record-actions button{font-size:13px;padding:8px 12px}.record-state{min-height:24px}.result{text-align:center;max-width:720px;margin:48px auto}.result h1{font-size:32px}.result-score{font:96px/1.3 Georgia;color:var(--green);margin:24px 0}.result-score small{font:24px Arial;color:var(--muted)}.result-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.result-list{text-align:left;margin:32px 0;display:grid;gap:8px}.result-row{display:flex;gap:12px;align-items:center;padding:16px 20px;border:1px solid var(--line);border-radius:12px;background:#fff}.result-row .phrase-small{font:19px Georgia;flex:1}.result-row small{font-size:12px;color:var(--muted)}.ok{color:var(--green)}.ng{color:var(--red)}footer{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding:24px 0;color:var(--muted);font-size:11px;gap:12px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}@keyframes breathe{50%{box-shadow:0 0 0 15px #e5eee4}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}}@media(max-width:760px){.shell{padding:0 20px}.header{height:80px}.brand{font-size:20px}.header-note{display:none}.home{grid-template-columns:1fr;gap:32px;padding:36px 0 28px}.home h1{font-size:36px}.visual{min-height:290px;padding:28px}.phrase{font-size:46px;margin-top:20px}.home-bottom{gap:16px;margin:24px 0}.feature b{font-size:12px}.feature small{font-size:11px}.feature .number{display:block}.question-card{padding:24px 20px}.quiz{margin:20px auto 32px}h2{font-size:22px}.answer-sentence{font-size:27px}footer{flex-direction:column;gap:4px}.result{margin:32px 0}.result-row{padding:12px;gap:8px}.result-row small{max-width:80px}.result-row .phrase-small{font-size:17px}}@media(max-width:360px){.shell{padding:0 12px}.home h1{font-size:30px}.edition{font-size:10px}.compare{grid-template-columns:1fr}.home-bottom{grid-template-columns:1fr}.feature .number{display:inline}.result-actions{flex-direction:column}}