:root{--bg:#f1f0eb;--paper:#fbfaf6;--text:#202d45;--blue:#2457ff;--guide:#d8dae0;--font-display:"Inter Tight", "Noto Sans JP", sans-serif;--font-body:"Noto Sans JP", "Inter Tight", sans-serif;--font-mono:"IBM Plex Mono", monospace}[data-astro-cid-54irrj6y]{box-sizing:border-box}[data-astro-cid-54irrj6y][hidden]{display:none!important}body{background:var(--bg);color:var(--text);font-family:var(--font-body);margin:0}.page[data-astro-cid-54irrj6y]{width:min(1500px,100%);margin:0 auto;padding:0 28px}.tool-head[data-astro-cid-54irrj6y]{border-bottom:1px solid var(--text);padding:24px 0 48px}.meta[data-astro-cid-54irrj6y]{grid-template-columns:1fr 1fr auto;gap:16px;display:grid}.meta[data-astro-cid-54irrj6y],.label[data-astro-cid-54irrj6y],footer[data-astro-cid-54irrj6y]{font-family:var(--font-mono);letter-spacing:.04em;font-size:11px}.meta[data-astro-cid-54irrj6y] i[data-astro-cid-54irrj6y]{color:var(--blue);font-style:normal}.heading[data-astro-cid-54irrj6y]{margin-top:76px}.eyebrow[data-astro-cid-54irrj6y]{margin:0 0 14px;font-size:14px;font-weight:700}h1[data-astro-cid-54irrj6y]{font-family:var(--font-display);letter-spacing:-.06em;margin:0;font-size:clamp(54px,8vw,120px);line-height:1}h2[data-astro-cid-54irrj6y]{margin:10px 0 16px;font-size:clamp(22px,3vw,36px);line-height:1.4}.practice[data-astro-cid-54irrj6y]{max-width:760px;margin:0 auto;padding:36px 0 60px}.hint[data-astro-cid-54irrj6y]{font-size:14px;line-height:1.9}button[data-astro-cid-54irrj6y]{border:1px solid var(--guide);background:var(--paper);min-height:52px;color:var(--text);font:inherit;cursor:pointer;padding:12px 20px}button[data-astro-cid-54irrj6y]:hover{border-color:var(--blue);color:var(--blue)}button[data-astro-cid-54irrj6y]:focus-visible,input[data-astro-cid-54irrj6y]:focus-visible{outline:3px solid var(--blue);outline-offset:3px}.dan-grid[data-astro-cid-54irrj6y]{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:28px;display:grid}.dan-grid[data-astro-cid-54irrj6y] button[data-astro-cid-54irrj6y]{justify-content:center;align-items:baseline;gap:8px;min-height:92px;display:flex}.dan-grid[data-astro-cid-54irrj6y] strong[data-astro-cid-54irrj6y]{font-family:var(--font-display);font-size:40px}.random-button[data-astro-cid-54irrj6y]{justify-content:space-between;align-items:center;width:100%;margin-top:12px;display:flex}.practice-top[data-astro-cid-54irrj6y]{justify-content:space-between;gap:16px;margin-bottom:18px;display:flex}.board[data-astro-cid-54irrj6y]{border:1px solid var(--text);background:var(--paper);text-align:center;border-radius:22px;padding:32px}#question[data-astro-cid-54irrj6y]{font-family:var(--font-display);white-space:nowrap;margin:0 0 24px;font-size:clamp(36px,7vw,76px)}label[data-astro-cid-54irrj6y]{margin-bottom:10px;display:block}input[data-astro-cid-54irrj6y]{border:2px solid var(--text);width:min(100%,220px);min-height:80px;color:var(--text);text-align:center;font:700 44px var(--font-display);background:#fff;border-radius:12px;margin:0 auto;padding:8px 16px;display:block}input[data-astro-cid-54irrj6y][readonly]{border-color:var(--guide)}.primary[data-astro-cid-54irrj6y]{border-color:var(--blue);background:var(--blue);color:#fff;border-radius:14px;font-weight:700}.primary[data-astro-cid-54irrj6y]:hover{color:#fff;background:#1742d9}.board[data-astro-cid-54irrj6y] button[data-astro-cid-54irrj6y]{width:min(100%,360px)}.feedback[data-astro-cid-54irrj6y]{margin-top:24px}.feedback[data-astro-cid-54irrj6y] strong[data-astro-cid-54irrj6y]{color:var(--blue);font-size:26px}.feedback[data-astro-cid-54irrj6y] p[data-astro-cid-54irrj6y]{margin:8px 0 24px;font-size:24px}.feedback[data-astro-cid-54irrj6y] p[data-astro-cid-54irrj6y]:empty{margin:0}.text-button[data-astro-cid-54irrj6y]{background:0 0;border:0;margin-top:20px;padding-inline:0}.result-board[data-astro-cid-54irrj6y]{margin-top:24px}.score[data-astro-cid-54irrj6y]{color:var(--blue);font:700 clamp(54px, 10vw, 86px) var(--font-display);margin:16px 0}#mistakes-section[data-astro-cid-54irrj6y]{border-top:1px solid var(--text);margin-top:32px;padding-top:12px}#mistakes[data-astro-cid-54irrj6y]{padding-left:28px;font-size:22px;line-height:1.9}.result-actions[data-astro-cid-54irrj6y]{grid-template-columns:1fr 1fr;gap:16px;margin-top:32px;display:grid}.note[data-astro-cid-54irrj6y]{border-top:1px solid var(--text);grid-template-columns:220px minmax(0,560px);gap:40px;padding:34px 0 64px;display:grid}.note[data-astro-cid-54irrj6y] p[data-astro-cid-54irrj6y]{margin:0;font-size:13px;line-height:1.9}footer[data-astro-cid-54irrj6y]{border-top:1px solid var(--text);justify-content:space-between;align-items:center;gap:16px;min-height:80px;display:flex}@media (width<=800px){.page[data-astro-cid-54irrj6y]{padding:0 18px}.heading[data-astro-cid-54irrj6y]{margin-top:52px}.meta[data-astro-cid-54irrj6y]{grid-template-columns:1fr auto}.meta[data-astro-cid-54irrj6y] span[data-astro-cid-54irrj6y]:nth-child(2){display:none}.note[data-astro-cid-54irrj6y]{grid-template-columns:1fr;gap:14px}}@media (width<=520px){.board[data-astro-cid-54irrj6y]{padding:24px 16px}.dan-grid[data-astro-cid-54irrj6y]{gap:8px}.dan-grid[data-astro-cid-54irrj6y] button[data-astro-cid-54irrj6y]{min-height:80px;padding:12px 8px}.dan-grid[data-astro-cid-54irrj6y] strong[data-astro-cid-54irrj6y]{font-size:32px}.result-actions[data-astro-cid-54irrj6y]{grid-template-columns:1fr;gap:12px}}