:root{color-scheme:light;--ink:#243c34;--green:#24694f;--muted:#738278;--paper:#f5f5ed;--line:#e3e8df;--yellow:#faedb5}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:"Hiragino Kaku Gothic ProN","Noto Sans JP",sans-serif;font-size:15px;line-height:1.7}button,input{font:inherit}button,a,input{-webkit-tap-highlight-color:transparent}button{cursor:pointer;border:0;border-radius:12px;background:var(--green);color:white;padding:14px 22px;font-weight:700}button:hover{filter:brightness(.94)}button:disabled{opacity:.55;cursor:wait}button:focus-visible,a:focus-visible{outline:3px solid #d1a51e;outline-offset:4px}.quiet{background:transparent;color:var(--green);padding:8px 12px}header{max-width:1200px;margin:auto;padding:30px 40px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line)}.brand{color:var(--ink);font-size:23px;text-decoration:none;letter-spacing:.04em}.brand b{color:var(--green)}.brand span{display:block;font-size:10px;letter-spacing:.15em;color:var(--muted)}#account{font-size:13px}main{max-width:1200px;margin:auto;padding:48px 40px 64px}h1{font-size:38px;letter-spacing:.02em;line-height:1.5;margin:10px 0 16px}h2{font-size:19px;margin:0 0 20px}.eyebrow{font-size:11px;letter-spacing:.16em;font-weight:700;color:var(--green);margin:0 0 10px}.auth{display:grid;grid-template-columns:1.2fr 1fr;gap:80px;align-items:center;min-height:620px}.intro>p:not(.eyebrow),.heading p{color:var(--muted)}.panel{background:#fff;border:1px solid var(--line);border-radius:24px;padding:30px;box-shadow:0 6px 24px #243c3404}#authform{display:flex;flex-direction:column;gap:12px}#authform h2{font-size:25px;margin-bottom:8px}label{display:block;font-weight:700;font-size:13px}input{display:block;width:100%;margin-top:8px;border:1px solid #d9e0d6;border-radius:10px;padding:13px;background:#fcfcf8;color:var(--ink)}input:focus{outline:2px solid var(--green);outline-offset:2px}small{font-size:11px;color:var(--muted)}.example{margin:35px 0 0 35px;background:var(--yellow);width:230px;padding:25px 35px;transform:rotate(-5deg);border-radius:8px;box-shadow:3px 8px 0 #e6dca5;font-family:monospace;font-size:32px;text-align:right;line-height:1.3}.example span{display:block;letter-spacing:.2em}.example strong{display:block;border-top:2px solid var(--ink);margin-top:6px;letter-spacing:.2em}.example i{display:block;color:#a04e35;font-size:12px;margin-top:15px}.heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:30px}.heading h1{font-size:32px}.heading p{margin-bottom:0}.pill{border:1px solid #cddcc6;color:var(--green);border-radius:100px;padding:9px 15px;font-size:11px;white-space:nowrap}.workspace{display:grid;grid-template-columns:1.3fr 1fr;gap:28px}.section-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.section-head h2{margin:0}.section-head>span{color:var(--muted);font-size:12px}.question{display:grid;grid-template-columns:26px 1fr 110px 28px;align-items:center;gap:12px;padding:17px 0;border-bottom:1px dashed var(--line)}.number{font-size:11px;color:var(--muted);background:var(--paper);border-radius:50%;text-align:center;padding:4px}.expression{font-size:25px;font-variant-numeric:tabular-nums;letter-spacing:.04em}.question input{font-size:23px;margin:0;text-align:center;font-variant-numeric:tabular-nums;padding:8px;width:100%}.mark{font-size:23px;color:var(--green);font-weight:700}.wrong .mark{color:#bb603d}.wrong input{border-color:#bb603d;background:#fff8ef}.right input{background:#eff7ee;border-color:#99b79c}#quiz>button{width:100%;margin-top:16px}#result{font-size:18px;font-weight:700;line-height:1.6;white-space:pre-line}.note{color:var(--muted);font-size:11px;line-height:1.8}.exercise>.note{text-align:center;margin-top:20px}.stats{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:20px}.stats>div{border:1px solid var(--line);border-radius:18px;padding:18px 8px;background:#ebf0e4;text-align:center}.stats strong{display:block;font-size:34px;color:var(--green);line-height:1.3}.stats span{font-size:11px}.calendar{padding:22px}.calendar h2{font-size:16px}.week,.grid{display:grid;grid-template-columns:repeat(7,1fr);text-align:center;gap:5px}.week{font-size:10px;color:var(--muted);padding:5px 0 12px}.grid button,.grid>span{height:42px;padding:1px;font-size:12px;font-weight:400;background:transparent;color:var(--ink);border:1px solid transparent;border-radius:10px}.grid button.today{border-color:var(--green)}.grid button.played{background:#faf0c9}.grid button.perfect{background:#e1eedf;color:var(--green);font-weight:700}.grid em{font-size:10px;display:block;line-height:1;font-style:normal}.legend{display:flex;gap:16px;margin-top:20px;font-size:10px;color:var(--green)}.encourage{text-align:center;font-size:12px;color:var(--muted);margin:24px 0}.error{color:#b34336;font-size:13px;margin:0;min-height:0}.error:empty{display:none}footer{max-width:1120px;border-top:1px solid var(--line);padding:24px 0;margin:auto;color:var(--muted);font-size:11px;display:flex;justify-content:space-between}[hidden]{display:none!important}@media(max-width:760px){header{padding:20px}.brand{font-size:19px}.brand span{font-size:9px}main{padding:30px 18px}.auth{grid-template-columns:1fr;gap:30px;min-height:0}.intro h1{font-size:30px}.intro>p{font-size:13px}.example{display:none}.workspace{grid-template-columns:1fr}.heading{display:block}.heading h1{font-size:27px}.pill{display:inline-block;margin-top:18px}.panel{padding:23px}.question{grid-template-columns:24px 1fr 92px 23px;gap:8px}.expression{font-size:23px}.question input{font-size:23px}.heading p{font-size:12px}footer{margin:0 20px}#account{max-width:145px;text-align:right}#logout{font-size:11px;padding:5px}.stats{margin-top:0}}

.timer-line{display:flex;align-items:center;justify-content:space-between;border-radius:12px;background:#f2f5ec;padding:10px 14px;margin:18px 0 5px;font-size:12px;color:var(--muted)}.timer-line strong{color:var(--green);font-size:19px;font-variant-numeric:tabular-nums}#day-detail p{margin:12px 0 6px}#day-detail ol{padding-left:22px;margin:6px 0}#day-detail li{padding:3px 0}

.ready{text-align:center;padding:40px 8px 32px}.ready h3{font-size:25px;margin:10px 0 16px}.ready>p{font-size:13px;color:var(--muted)}.ready .eyebrow{font-size:10px;color:var(--green)}.ready button{min-width:220px;margin-top:20px}.ready .error{color:#b34336}

.expression .mental{display:block;color:var(--green);font-size:10px;font-weight:400;letter-spacing:0;margin-bottom:3px}