:root{--ink:#242758;--muted:#74768d;--bg:#f7f6f2;--line:#e4e3eb;--accent:#e88361;--green:#267e68}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:system-ui,-apple-system,"Segoe UI","Yu Gothic",Meiryo,sans-serif;line-height:1.65}button,input,textarea,select{font:inherit}button,a,input,textarea{touch-action:manipulation}button{border:0;border-radius:12px;background:var(--ink);color:white;padding:12px 20px;cursor:pointer;font-weight:650;min-height:46px}button:hover{filter:brightness(1.12)}button:disabled{opacity:.5;cursor:default}button.secondary{background:#ecebf2;color:var(--ink)}a{color:inherit}header{max-width:1100px;margin:auto;padding:24px 28px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}#brand{display:flex;gap:12px;align-items:center;text-decoration:none;font-size:21px;font-weight:750}#brand small{display:block;font-size:9px;letter-spacing:2px;color:var(--muted)}.logo{background:var(--ink);color:#fff;font-size:26px;padding:0 11px;border-radius:12px}.tag,.eyebrow{font-size:12px;letter-spacing:1px;color:var(--muted)}main{max-width:1100px;margin:auto;padding:28px}.hero{position:relative;padding:35px 0 40px;max-width:700px}.hero h1{font-size:clamp(34px,5vw,54px);line-height:1.2;letter-spacing:-2px;margin:15px 0 22px}.hero h1 span{color:var(--accent)}.hero p{font-size:16px;color:var(--muted);max-width:570px}.stats{display:flex;gap:28px;padding:16px 0}.stats b{display:block;font-size:26px}.stats small{color:var(--muted)}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{background:white;border:1px solid var(--line);border-radius:20px;padding:24px;display:flex;flex-direction:column;gap:10px}.card .num{font-size:13px;font-weight:700;color:var(--accent)}.card h2{font-size:22px;margin:4px 0;line-height:1.5}.card p{font-size:14px;color:var(--muted);margin:0 0 6px}.card button{margin-top:auto}.card .saved{font-size:12px;color:var(--green)}.info{border:1px dashed #d8d5e4;border-radius:16px;padding:20px 24px;margin-top:25px;color:var(--muted);font-size:14px}.info p{margin:7px 0}.toolbar{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:18px}.toolbar h1{font-size:23px;margin:0}.toolbar small{color:var(--muted)}.progressbar{height:5px;background:#e4e2ec;border-radius:5px;overflow:hidden}.progressbar span{display:block;height:100%;background:var(--accent);transition:width .2s}.sticky{position:sticky;top:0;z-index:4;background:#f7f6f2f5;backdrop-filter:blur(12px);padding:14px 0}.status{display:flex;justify-content:space-between;align-items:center;margin-bottom:9px;font-size:13px}.tabs{display:flex;gap:8px;overflow-x:auto;margin:20px 0;padding-bottom:5px}.tabs button{flex-shrink:0;background:#ecebf2;color:var(--ink);padding:9px 15px;font-size:13px}.tabs button.active{background:var(--ink);color:#fff}.section-head{display:flex;justify-content:space-between;align-items:center;margin:24px 0 14px}.section-head h2{font-size:22px;margin:0}.section-head small{color:var(--muted)}.question{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;margin:14px 0}.question h3{font-size:17px;line-height:1.8;margin:0 0 16px;font-weight:600}.qnum{color:var(--accent);font-weight:750;margin-right:10px}.point{float:right;font-size:11px;color:var(--muted)}.options{display:grid;gap:9px}.option{border:1px solid var(--line);border-radius:10px;display:flex;align-items:flex-start;gap:12px;padding:12px 14px;cursor:pointer;color:#454761}.option:has(input:checked){border-color:var(--ink);background:#f0eff8}.option input{accent-color:var(--ink);margin-top:7px;flex-shrink:0}.option.correct{background:#eef8f3;border-color:#8dbca8}.option.wrong{background:#fff0ea;border-color:#e1a794}.answer-input{border:1px solid #cfcddb;border-radius:10px;padding:12px;width:100%;background:#fff;color:var(--ink);font-size:17px}textarea{min-height:105px;resize:vertical}.explanation{border-top:1px solid var(--line);padding-top:15px;margin-top:18px;font-size:14px;color:#565b70}.explanation b{color:var(--green)}.explanation .error{color:#ac4e33}.reading{background:#efedf6;border-radius:16px;padding:24px;font-size:17px;line-height:2.05;white-space:pre-line;margin:20px 0}.reading h3{font-size:15px;margin:0 0 12px}.audio{background:var(--ink);color:white;padding:22px;border-radius:16px;margin:20px 0}.audio h3{margin:0 0 8px}.audio p{font-size:13px;color:#d5d4e8}.audio button{background:white;color:var(--ink);margin:5px 5px 5px 0}.audio .secondary{background:#484b75;color:white}.audio label{font-size:12px}.audio select{border:0;border-radius:8px;padding:7px;background:#484b75;color:white}.audio details{font-size:15px;margin-top:12px;white-space:pre-line}.bottom-actions{display:flex;justify-content:space-between;gap:12px;padding:22px 0}.result{background:var(--ink);color:white;padding:28px;border-radius:20px;margin:20px 0}.result h2{margin-top:0}.score{font-size:45px;font-weight:750}.score small{font-size:18px;font-weight:400;color:#cccbe1}.result p{color:#deddec;font-size:14px}.marks{display:flex;gap:12px;flex-wrap:wrap;font-size:13px;margin-top:12px}.self-mark{display:flex;align-items:center;gap:12px;margin-top:12px}.self-mark select{border:1px solid var(--line);border-radius:8px;padding:8px;color:var(--ink);background:white}dialog{border:0;border-radius:20px;max-width:430px;width:calc(100% - 32px);padding:28px;color:var(--ink);box-shadow:0 15px 70px #1114}dialog::backdrop{background:#12142980}.actions{display:flex;justify-content:flex-end;gap:10px;margin-top:20px}#toast{position:fixed;bottom:22px;left:50%;transform:translateX(-50%);background:var(--ink);color:white;padding:10px 18px;border-radius:10px;z-index:20;display:none;font-size:14px;max-width:90vw}footer{max-width:1100px;margin:30px auto 0;padding:25px 28px;border-top:1px solid var(--line);font-size:14px;color:var(--muted)}footer span{float:right}footer p{font-size:11px;margin-top:10px}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
@media(max-width:760px){.grid{grid-template-columns:repeat(2,1fr)}main{padding:20px}.hero{padding-top:20px}.toolbar{align-items:flex-start}.toolbar h1{font-size:19px}}
@media(max-width:480px){header{padding:18px 20px}.grid{grid-template-columns:1fr}.card{padding:22px}.hero h1{letter-spacing:-1px}.hero{padding-bottom:20px}.stats{gap:28px}.question{padding:17px}.question h3{font-size:16px}.reading{padding:18px;font-size:16px}.toolbar{flex-wrap:wrap}.bottom-actions button{padding:11px 14px}.section-head h2{font-size:19px}.result{padding:23px}.actions{flex-wrap:wrap}footer span{float:none;display:block;margin-top:5px}}