:root{color-scheme:light;--page: #f5f4ef;--card: #fff;--soft: #f0efe9;--ink: #22271f;--muted: #73796f;--line: #e3e4dc;--accent: #397055;--accent-strong: #28563f;--accent-soft: #e5efe8;--bad: #a33e36;--shadow: 0 14px 42px rgb(37 48 37 / 7%);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}:root[data-theme=dark]{color-scheme:dark;--page: #171b18;--card: #222923;--soft: #2b332c;--ink: #edf1eb;--muted: #a5afa5;--line: #3a443b;--accent: #9dceab;--accent-strong: #bee4c7;--accent-soft: #2e4033;--bad: #ffaaa0;--shadow: 0 14px 42px rgb(0 0 0 / 18%)}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:var(--page);color:var(--ink);transition:background .2s,color .2s}button,input,select{font:inherit}button,select{color:inherit}button{cursor:pointer}button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid color-mix(in srgb,var(--accent) 45%,transparent);outline-offset:2px}.shell{width:min(100% - 40px,1280px);margin:auto}header{display:flex;height:60px;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;gap:10px;align-items:center;color:var(--ink);text-decoration:none}.brand-mark{display:grid;width:36px;height:36px;place-items:center;border-radius:11px;background:var(--accent);color:#fff;font:23px/1 Sawarabi Mincho,serif}.brand-name{font-size:18px;font-weight:800;letter-spacing:-.04em}.brand-note{margin-left:6px;color:var(--muted);font-size:.72em;font-weight:500;letter-spacing:0}.icon-button{width:40px;height:40px;border:1px solid var(--line);border-radius:10px;background:var(--card)}main{padding:17px 0 24px}.intro{margin:0 auto 14px;text-align:center}.eyebrow{margin:0 0 8px;color:var(--accent);font-size:11px;font-weight:800;letter-spacing:.15em;text-transform:uppercase}h1{margin:0;font:500 clamp(32px,5vw,46px)/1.12 Georgia,"Times New Roman",serif;letter-spacing:-.045em}.intro p{margin:7px auto 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.check-option{line-height:1.35}.check-option,.switch-option{display:flex;gap:7px;align-items:center;color:var(--ink);font-size:12px;cursor:pointer}.review-option{margin-bottom:12px}input[type=checkbox]{accent-color:var(--accent)}.stack-options{display:grid;grid-template-columns:minmax(0,1fr);gap:7px;min-width:0}select,.answer-input{width:100%;min-width:0;min-height:36px;padding:7px 9px;border:1px solid var(--line);border-radius:8px;background:var(--card);color:var(--ink)}.font-preview{display:flex;min-width:0;flex-direction:column;align-items:center;justify-content:center;gap:2px;min-height:58px;padding:5px 9px;border:1px solid var(--line);border-radius:8px;background:var(--soft)}.font-preview-sample{min-width:0;overflow:hidden;font:26px/1.2 var(--preview-font, "Noto Sans JP"),sans-serif;letter-spacing:.08em;text-overflow:ellipsis;white-space:nowrap}.font-preview-name{color:var(--muted);font-size:10px;line-height:1.2;text-align:center}.quiz-card{padding:16px 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srgb,#1abc9c 12%,var(--card))}.reading-badge.is-expected{box-shadow:0 0 0 2px color-mix(in srgb,currentColor 30%,transparent)}