/* 表示の基準は grade3/home.css・lesson.css・quiz.css。ここは2級の科目切替と入力部品。 */
.g2-subjects{position:relative;z-index:10;display:flex;justify-content:center;gap:10px;padding:18px 12px 0}
.g2-switch-row{position:relative;z-index:10;display:flex;align-items:flex-end;justify-content:center;gap:12px;padding:0 12px}.g2-switch-row .g2-subjects{padding-left:0;padding-right:0}.g2-grade-switch{display:block;margin-bottom:2px;padding:9px 14px;border:2px solid #ffffff90;border-radius:14px;background:#0f172acc;color:#fff;font-size:13px;font-weight:900;text-decoration:none;white-space:nowrap}
.g2-subjects a{display:block;padding:10px 22px;border:3px solid #ffffff80;border-radius:16px;background:#ffffff20;color:white;font-weight:900;text-decoration:none}
.g2-subjects a[aria-current="page"]{background:#fff9db;border-color:#fbbf24;color:#713f12;box-shadow:0 4px 0 #b45309}
.g2-subjects a:hover{border-color:white}.stage-card-label small{display:block;font-size:10px;color:#64748b;margin-top:4px}
button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #1565c0;outline-offset:3px}
#save-warning{position:fixed;top:0;left:0;right:0;z-index:200;background:#fff2cf;padding:8px;text-align:center;font-size:13px}
.g2-field{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin:12px 0;font-size:14px}
.g2-field input{width:140px;border:2px solid #ffcc80;border-radius:8px;padding:8px 10px;font:inherit;background:white}
.g2-field textarea{width:100%;padding:10px;border:2px solid #ffcc80;border-radius:8px;font:inherit;resize:vertical}
.g2-check{padding:9px 18px;background:#ff8c00;color:white;border:0;border-radius:999px;font:inherit;font-size:14px;cursor:pointer;margin-top:8px}
.g2-hint{font-size:13px;color:#785010;margin-top:12px}.g2-hint summary{cursor:pointer}.input-error{color:#c62828;font-size:13px}.input-error:empty{display:none}
.g2-table{overflow-x:auto}.g2-table caption{font-weight:700;margin-bottom:8px}.g2-table .jr-table td{text-align:left}
.g2-diagram{margin:14px 0;padding:16px;border:3px solid #ffd180;border-radius:18px;background:#fffdf6;text-align:center}.g2-diagram figcaption{font-weight:900;color:#8a4b08;margin-bottom:12px}.g2-diagram-flow{display:flex;align-items:stretch;justify-content:center;gap:9px}.g2-diagram-flow div{display:flex;align-items:center;justify-content:center;min-height:72px;flex:1;padding:10px;border:2px solid #ffb74d;border-radius:14px;background:white;font-weight:700}.g2-arrow{align-self:center;color:#f57c00;font-size:24px;font-weight:900}.g2-diagram p{margin:12px 0 0;font-size:14px;color:#5f4a34}
.free-block:has(.quiz-box){background:transparent;border:0;padding:0}
.answer-feedback:focus{outline:2px solid #ffb74d;outline-offset:3px}
#app.home-surface{min-height:100dvh}#app.quiz-surface{display:flex;flex-direction:column;min-height:100dvh}
.g2-practice-fab{position:fixed;right:18px;bottom:18px;z-index:90;display:flex;align-items:center;gap:8px;padding:13px 20px;border:3px solid #fff;border-radius:999px;background:#1565c0;color:#fff;text-decoration:none;font-weight:900;box-shadow:0 6px 0 #0d47a1,0 10px 24px #0d47a144;transition:transform .15s,box-shadow .15s}.g2-practice-fab:hover{transform:translateY(-2px);box-shadow:0 8px 0 #0d47a1,0 12px 26px #0d47a150}.g2-practice-fab span{font-size:20px}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}
@media(max-width:560px){.g2-diagram-flow{flex-direction:column}.g2-arrow{transform:rotate(90deg)}.g2-subjects a{padding:9px 13px}.g2-practice-fab{right:10px;bottom:10px;padding:10px 15px;font-size:14px}}
@media(max-width:560px){.g2-switch-row{align-items:center;flex-direction:column;gap:7px}.g2-switch-row .g2-subjects{padding-top:14px}.g2-grade-switch{margin:0;padding:7px 12px}}
.g2-access{min-height:100dvh;display:grid;place-items:center;padding:24px;background:linear-gradient(160deg,#075985,#1d4ed8)}.g2-access-card{max-width:520px;padding:28px;border:4px solid #fff;border-radius:24px;background:#fff;color:#1e293b;text-align:center;box-shadow:0 18px 45px #0f172a55}.g2-access-card h1{margin:0 0 12px;font-size:24px}.g2-access-card p{line-height:1.8}.g2-access-card a{display:inline-block;margin-top:12px;padding:11px 20px;border-radius:999px;background:#1565c0;color:#fff;font-weight:900;text-decoration:none}