.practice-page{--ink:#222d41;--muted:#65718a;--line:#e3e5ed;--mint:#d9efe3;--mint-ink:#2d6a49;max-width:1120px;color:var(--ink);margin:20px auto 0;padding:0 40px}.practice-heading{justify-content:space-between;align-items:center;gap:24px;margin:20px 0 40px;display:flex}.back-home{margin-bottom:20px;font-size:13px;text-decoration:none;display:inline-block}.practice-heading h1{letter-spacing:-.045em;font-size:48px;line-height:1.1}.practice-heading p{margin:16px 0 0;font-size:16px}.level-stamp{background:#ffffff38;border:1px solid #ffffff50;border-radius:26px;flex-shrink:0;place-items:center;width:86px;height:86px;font-size:35px;font-weight:750;display:grid;transform:rotate(5deg)}.practice-layout{grid-template-columns:285px minmax(0,1fr);align-items:start;gap:32px;display:grid}.session-sidebar{position:sticky;top:24px}.session-list{flex-direction:column;gap:12px;display:flex}.session-link{background:#ffffff28;border:1px solid #ffffff65;border-radius:22px;align-items:center;gap:13px;padding:20px 16px;text-decoration:none;transition:background .15s,transform .15s;display:flex}.session-link:hover{background:#ffffff65}.session-link[aria-current]{background:#fff;border-color:#fff;box-shadow:0 6px 20px #19365412}.session-number{color:#425878;border:1px solid #19365426;border-radius:50%;flex-shrink:0;place-items:center;width:33px;height:33px;font-size:13px;font-weight:700;display:grid}.session-link strong{font-size:17px;display:block}.session-link small{margin-top:5px;font-size:11px;display:block}.session-mark{margin-left:auto;font-size:20px}.is-complete .session-number{background:var(--mint);color:var(--mint-ink);border-color:#0000}.practice-note{color:#25476b;margin:23px 12px;font-size:13px}.quiz-session{background:#faf9fc;border:1px solid #ffffffb3;border-radius:30px;scroll-margin-top:20px;overflow:hidden;box-shadow:0 18px 45px #2346681c}.quiz-session+.quiz-session{margin-top:28px}.is-interactive .quiz-session{margin-top:0}.quiz-toolbar{color:var(--muted);align-items:center;gap:20px;padding:26px 30px 12px;font-size:12px;font-weight:650;display:flex}.quiz-progress{flex:1;line-height:0}progress{-webkit-appearance:none;appearance:none;background:#e6e8eb;border:0;border-radius:10px;width:100%;height:9px;overflow:hidden}progress::-webkit-progress-bar{background:#e6e8eb;border-radius:10px}progress::-webkit-progress-value{background:linear-gradient(90deg,#59c97d,#00a878);border-radius:10px}progress::-moz-progress-bar{background:#00a878;border-radius:10px}.question-body{padding:20px 30px 32px}.question-direction{color:var(--muted);text-align:center;text-shadow:none;letter-spacing:0;margin:0 0 24px;font-size:15px;font-weight:600}.sentence{white-space:pre-wrap;overflow-wrap:anywhere;background:#fff;border:1px solid #ececf2;border-radius:24px;align-content:center;min-height:150px;padding:30px 25px;font-family:Hiragino Kaku Gothic ProN,Yu Gothic,sans-serif;font-size:25px;line-height:1.9;display:block;box-shadow:0 5px 15px #222d4105}.blank{white-space:nowrap;color:#455c81}.sentence u{text-underline-offset:7px}.answer-grid{grid-template-columns:1fr 1fr;gap:18px;margin-top:24px;display:grid}.answer-tile{min-height:95px;color:var(--ink);cursor:pointer;overflow-wrap:anywhere;background:#fff;border:2px solid #0000;border-radius:24px;justify-content:center;align-items:center;gap:8px;padding:20px 32px;font-family:inherit;font-size:25px;display:flex;position:relative;box-shadow:0 6px #e5e5ec,0 9px 18px #222d4110}.answer-tile:not(:disabled):hover{background:#f5faff;border-color:#a8cdeb}.answer-tile:not(:disabled):active{transform:translateY(4px);box-shadow:0 2px #e5e5ec}.answer-letter{color:#718096;font-size:10px;position:absolute;top:12px;left:13px}.answer-mark{font-size:16px;position:absolute;top:10px;right:12px}.answer-tile:disabled{opacity:1;cursor:default}.answer-tile.is-correct{color:#244a38;background:#deeee6;border-color:#48ab78;box-shadow:0 5px #bbd9c9}.answer-tile.is-wrong{background:#ffe5eb;border-color:#d77586;box-shadow:0 5px #ebc9d1}.answer-feedback{background:var(--mint);border-radius:26px 26px 0 0;padding:23px 30px 28px}.answer-feedback.is-wrong{background:#ffe5eb}.feedback-heading{justify-content:space-between;align-items:center;display:flex}.feedback-title{color:var(--mint-ink);letter-spacing:-.02em;margin:0;font-size:25px}.is-wrong .feedback-title{color:#a5364c}.feedback-symbol{color:var(--mint-ink);font-size:21px}.is-wrong .feedback-symbol{color:#a5364c}.correct-answer,.answer-sense{margin:13px 0;font-size:15px;line-height:1.5}.explanation{margin:18px 0}.explanation summary{cursor:pointer;min-height:26px;font-size:13px;font-weight:650}.explanation p{overflow-wrap:anywhere;margin:12px 0;font-size:15px;line-height:1.8}.continue-button,.primary-action,.secondary-action{cursor:pointer;border:0;border-radius:999px;min-height:52px;padding:16px 24px;font-family:inherit;line-height:1.3}.continue-button,.primary-action{background:var(--ink);color:#fff;justify-content:space-between;align-items:center;gap:24px;width:100%;font-size:15px;font-weight:650;display:flex}.continue-button:hover,.primary-action:hover{background:#34455f}.secondary-action{color:var(--ink);background:0 0;border:1px solid #c9ced8;font-size:15px;font-weight:600}.practice-page button:focus-visible,.practice-page summary:focus-visible{outline-offset:5px;outline:3px solid #307ac7}.question-direction:focus,.feedback-title:focus,.session-result h2:focus{outline:none}.quiz-footnote{text-align:center;color:#25476b;margin:20px 10px;font-size:12px;line-height:1.6}.practice-app-note{text-align:center;padding:50px 20px 55px}.mini-wordmark{font-family:Darumadrop,sans-serif;font-size:31px}.practice-app-note p{margin:6px 0 15px;font-size:14px}.practice-app-note a{text-underline-offset:5px;font-size:13px}.session-result{text-align:center;padding:30px}.result-check{background:var(--mint);width:70px;height:70px;color:var(--mint-ink);border-radius:50%;place-items:center;margin:0 auto 22px;font-size:35px;display:grid}.session-result h2{color:var(--ink);text-shadow:none;margin:0 0 20px;font-size:33px}.result-score{margin:10px 0;font-size:25px;font-weight:700}.result-message{color:var(--muted);margin:0 0 28px;font-size:15px}.result-actions{flex-direction:column;gap:12px;max-width:360px;margin:auto;display:flex}.result-review{text-align:left;margin-top:28px}.result-review summary{cursor:pointer;padding:12px 0;font-size:14px;font-weight:650}.review-question{border-top:1px solid var(--line);padding:18px 0;font-size:14px;line-height:1.8}.review-question p{white-space:pre-wrap;overflow-wrap:anywhere}.review-question p[lang=ja]{font-size:19px}.review-status{font-weight:700}.practice-page [hidden]{display:none!important}rt{font-size:.5em}.practice-layout:not(.is-interactive) .continue-button{display:none}.practice-layout:not(.is-interactive) .question{border-bottom:1px solid var(--line)}@media (width>=1100px){.question-body{padding:26px 36px 38px}.sentence{min-height:170px;font-size:27px}.answer-tile{min-height:105px}}@media (width<=1000px){.practice-layout{grid-template-columns:240px minmax(0,1fr);gap:20px}.session-link{gap:9px;padding:18px 12px}.session-link small{font-size:10px}.question-body{padding:18px 22px 28px}.answer-tile{padding:20px 25px;font-size:23px}.sentence{padding:24px 20px;font-size:23px}}@media (width<=760px){.practice-page{margin-top:0;padding:0 20px}.practice-heading{margin:8px 0 26px}.practice-heading h1{font-size:36px}.practice-heading p{max-width:250px;margin-top:12px;font-size:14px;line-height:1.6}.back-home{display:none}.level-stamp{border-radius:20px;width:62px;height:62px;font-size:27px}.practice-layout{display:block}.session-sidebar{margin-bottom:20px;position:static}.session-list{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;display:grid}.session-link{text-align:center;border-radius:16px;justify-content:center;padding:13px 6px}.session-link strong{font-size:13px}.session-link small,.session-number,.session-mark,.practice-note{display:none}.session-link.is-complete strong:after{content:" ✓";color:var(--mint-ink)}.quiz-session{border-radius:24px}.quiz-toolbar{gap:14px;padding:23px 20px 10px}.question-body{padding:18px 18px 28px}.question-direction{margin-bottom:20px;font-size:13px}.sentence{border-radius:21px;min-height:145px;padding:23px 18px;font-size:23px;line-height:1.9}.answer-grid{gap:14px;margin-top:22px}.answer-tile{border-radius:22px;min-height:90px;padding:25px 20px;font-size:24px}.answer-letter{font-size:9px;top:10px;left:10px}.answer-feedback{padding:22px 22px 25px}.session-result{padding:26px 22px}.session-result h2{font-size:29px}.practice-app-note{padding:35px 10px 40px}}@media (prefers-reduced-motion:reduce){.session-link{transition:none}.answer-tile:not(:disabled):active{transform:none}}@media (width<=760px){.practice-heading .back-home{margin-bottom:14px;display:inline-block}}