:root{--bg:#f7f5f1;--surface:#fff;--border:#e7e2d9;--text:#2b2a28;--text-muted:#6f6a63;--accent:#c0583f;--accent-soft:#fbeeea;--primary:#2b2a28;--primary-text:#fff;--correct:#2e7d57;--correct-soft:#eef6f1;--incorrect:#c0392b;--incorrect-soft:#fbeaea;--radius:14px;--shadow:0 10px 30px rgba(43,42,40,.06);--max-width:720px}*{box-sizing:border-box}body,html{margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Hiragino Kaku Gothic ProN,Hiragino Sans,Noto Sans JP,Meiryo,sans-serif;line-height:1.7;-webkit-font-smoothing:antialiased}a{color:inherit}button{font-family:inherit;cursor:pointer}button:disabled{cursor:not-allowed}.app-shell{min-height:100vh;display:flex;flex-direction:column}.app-header{border-bottom:1px solid var(--border);background:var(--bg)}.app-header__inner{max-width:var(--max-width);margin:0 auto;padding:18px 20px;display:flex;align-items:center;gap:10px}.app-brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:inherit;border-radius:8px;transition:opacity .15s ease}.app-brand:hover{opacity:.75}.app-brand:focus-visible{outline:2px solid var(--accent);outline-offset:3px}.app-logo{width:34px;height:34px;border-radius:8px;background:var(--accent);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:15px}.app-title{font-size:19px;font-weight:700;margin:0}.app-main{flex:1 1;width:100%;max-width:var(--max-width);margin:0 auto;padding:28px 20px 56px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px}.eyebrow{color:var(--accent);font-size:12px;font-weight:700;letter-spacing:.12em;margin:0 0 6px}.section-title{font-size:20px;font-weight:700;margin:0 0 16px}.lead{color:var(--text-muted);margin:0 0 24px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;width:100%;padding:15px 20px;border-radius:10px;border:1px solid transparent;font-size:15px;font-weight:700;text-decoration:none;transition:opacity .15s ease,background .15s ease}.btn--primary{background:var(--primary);color:var(--primary-text)}.btn--accent{background:var(--accent);color:#fff}.btn--outline{background:var(--surface);color:var(--text);border-color:var(--border)}.btn:disabled{opacity:.45}.btn:not(:disabled):hover{opacity:.9}.genre-grid{display:grid;grid-template-columns:1fr;grid-gap:16px;gap:16px}@media (min-width:560px){.genre-grid{grid-template-columns:1fr 1fr}}.genre-card{display:flex;flex-direction:column;gap:10px;text-align:left;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;width:100%;transition:border-color .15s ease,transform .1s ease}.genre-card:hover{border-color:var(--accent)}.genre-card__name{font-size:17px;font-weight:700;margin:0}.genre-card__desc{color:var(--text-muted);font-size:14px;margin:0;flex:1 1}.genre-card__cta{margin-top:6px;color:var(--accent);font-weight:700;font-size:14px}.quiz-topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}.quiz-genre{color:var(--accent);font-weight:700;font-size:14px}.quiz-progress-label{color:var(--text-muted);font-size:14px}.progress-track{height:6px;width:100%;background:var(--border);border-radius:999px;overflow:hidden;margin-bottom:24px}.progress-fill{height:100%;background:var(--primary);border-radius:999px;transition:width .25s ease}.badge{display:inline-block;background:var(--accent);color:#fff;padding:4px 10px;border-radius:6px;margin-bottom:14px}.badge,.question-no{font-size:12px;font-weight:700}.question-no{color:var(--accent);letter-spacing:.1em;margin:0 0 8px}.question-text{font-size:19px;font-weight:700;line-height:1.6;margin:0 0 20px}.choices{flex-direction:column;margin-bottom:20px}.choice,.choices{display:flex;gap:12px}.choice{align-items:center;width:100%;text-align:left;background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:14px 16px;font-size:15px;color:var(--text);transition:border-color .15s ease,background .15s ease}.choice__num{flex:0 0 auto;width:26px;height:26px;border-radius:999px;background:var(--border);color:var(--text-muted);display:inline-flex;align-items:center;justify-content:center;font-size:13px;font-weight:700}.choice__body{flex:1 1}.choice__tag,.choice__text{font-weight:700}.choice__tag{margin-left:auto;font-size:13px;white-space:nowrap}.choice--selected{border-color:var(--accent);background:var(--accent-soft)}.choice--selected .choice__num{background:var(--accent);color:#fff}.choice--correct{border-color:var(--correct);background:var(--correct-soft)}.choice--correct .choice__num{background:var(--correct);color:#fff}.choice--correct .choice__tag{color:var(--correct)}.choice--chosen-wrong{border-color:var(--incorrect);background:var(--incorrect-soft)}.choice--chosen-wrong .choice__num{background:var(--incorrect);color:#fff}.choice--chosen-wrong .choice__tag{color:var(--incorrect)}.choice--dim{opacity:.55}.feedback-banner{border-radius:12px;padding:16px;text-align:center;font-weight:700;margin-bottom:18px}.feedback-banner--correct{background:var(--correct-soft);color:var(--correct);border:1px solid var(--correct)}.feedback-banner--incorrect{background:var(--incorrect-soft);color:var(--incorrect);border:1px solid var(--incorrect)}.explanation{background:#faf8f4;border:1px solid var(--border);border-radius:12px;padding:16px;margin-bottom:20px}.explanation__title{color:var(--accent);font-weight:700;font-size:14px;margin:0 0 8px}.explanation__body{color:var(--text);font-size:14px;margin:0}.result-head{text-align:center}.result-eyebrow{color:var(--accent);font-weight:700;letter-spacing:.14em;font-size:13px;margin:0 0 14px}.result-score{font-size:20px;color:var(--text-muted);margin:0 0 8px}.result-score__big{font-size:46px;font-weight:800;color:var(--accent);margin:0 6px;vertical-align:baseline}.result-message{font-size:18px;font-weight:700;margin:18px 0 24px}.result-divider{border:none;border-top:1px solid var(--border);margin:24px 0}.result-list-title{color:var(--text-muted);font-size:14px;font-weight:700;margin:0 0 10px}.result-list{list-style:none;margin:0 0 24px;padding:0}.result-list__item{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 4px;border-bottom:1px solid var(--border)}.result-list__no{color:var(--text-muted);font-size:14px;font-weight:700}.result-list__mark{flex:0 0 auto;width:1.5em;text-align:center;font-size:20px;font-weight:800;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.result-list__mark--correct{color:var(--correct)}.result-list__mark--incorrect{color:var(--incorrect)}.result-actions{display:flex;flex-direction:column;gap:12px}.error-box{text-align:center}.error-box__title{font-size:18px;font-weight:700;margin:0 0 10px}.error-box__body{color:var(--text-muted);margin:0 0 20px}.loading{text-align:center;color:var(--text-muted);padding:40px 0}.center-narrow{max-width:560px;margin:0 auto}