:root{--bg:#fffaf3;--ink:#2d2a26;--muted:#6f6a63;--accent:#f28c38;--accent-dark:#d9711d;--soft:#fff1e2;--line:#eadfd2;--card:#fff;--error:#c2402b}*{box-sizing:border-box}body{background:var(--bg);color:var(--ink);margin:0;font-family:Hiragino Maru Gothic ProN,Hiragino Sans,Noto Sans JP,Yu Gothic,sans-serif;line-height:1.7}main{max-width:760px;margin:0 auto;padding:24px 16px 48px}.hero{text-align:center;padding:24px 0 8px}.brand{background:var(--soft);color:var(--accent-dark);border-radius:999px;margin:0 0 8px;padding:4px 14px;font-size:14px;font-weight:700;display:inline-block}h1{margin:8px 0 12px;font-size:clamp(26px,6vw,36px);line-height:1.4}.lead{color:var(--muted);margin:0 0 16px}.features{flex-wrap:wrap;justify-content:center;gap:8px;margin:0 0 24px;padding:0;list-style:none;display:flex}.features li{background:var(--card);border:1px solid var(--line);border-radius:999px;padding:4px 14px;font-size:14px}.card{background:var(--card);border:1px solid var(--line);border-radius:20px;gap:18px;padding:24px;display:grid;box-shadow:0 6px 24px #78501e0f}.row{grid-template-columns:1fr 1fr;gap:16px;display:grid}label,legend{gap:6px;font-size:15px;font-weight:700;display:grid}fieldset{border:0;margin:0;padding:0}legend{margin-bottom:6px}select,input{font:inherit;border:1px solid var(--line);color:var(--ink);background:#fff;border-radius:12px;width:100%;padding:12px;font-weight:400}select:focus,input:focus{outline:2px solid var(--accent);outline-offset:1px}.chips{flex-wrap:wrap;gap:8px;display:flex}button{font:inherit;cursor:pointer}.chip{border:1px solid var(--line);color:var(--ink);background:#fff;border-radius:999px;padding:8px 18px}.chip.active{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:700}.primary{background:var(--accent);color:#fff;border:0;border-radius:14px;padding:14px 20px;font-size:17px;font-weight:700}.primary:hover:not(:disabled){background:var(--accent-dark)}.primary:disabled{opacity:.7;cursor:wait}.secondary{border:1px solid var(--accent);color:var(--accent-dark);background:#fff;border-radius:14px;padding:14px 20px;font-weight:700}.error{color:var(--error);margin:0;font-weight:700}.notice{background:var(--soft);border-radius:12px;margin:32px 0 0;padding:12px 16px}.toolbar{flex-wrap:wrap;gap:12px;margin:24px 0 16px;display:flex}.sheet{border:1px solid var(--line);color:#000;background:#fff;border-radius:8px;margin-bottom:24px;padding:32px}.sheet-head{flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:15px;display:flex}.sheet h2{border-bottom:3px solid var(--accent);margin:16px 0 4px;padding-bottom:6px;font-size:22px}.instructions{color:#444;margin:8px 0 16px}.questions{margin:0;padding-left:1.6em}.questions li{break-inside:avoid;border-bottom:1px dashed #ddd;padding:10px 0}.questions p{white-space:pre-wrap;margin:0}.answer-space{color:#888;border:1px solid #bbb;border-radius:6px;width:60%;min-height:36px;margin-top:10px;margin-left:auto;padding:4px 8px;font-size:12px}.answer{font-size:17px}.explanation{color:#444;font-size:14px;margin-top:4px!important}.parent-tip{background:var(--soft);border-radius:8px;margin:20px 0 0;padding:12px 16px}.tabs{grid-template-columns:repeat(2,1fr);gap:6px;margin-bottom:12px;display:grid}.tab{border:1px solid var(--line);background:var(--card);color:var(--ink);border-radius:14px;flex-direction:column;align-items:center;gap:2px;padding:10px 6px;font-size:15px;font-weight:700;display:flex}.tab.active{border-color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent);background:var(--soft)}.panel-lead{color:var(--muted);margin:0}.library{grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:8px;margin:0;padding:0;list-style:none;display:grid}.library button{text-align:left;border:1px solid var(--line);width:100%;color:var(--ink);background:#fff;border-radius:12px;padding:10px 12px;display:grid}.library button:hover{border-color:var(--accent)}.lib-meta{color:var(--muted);font-size:12px}.lib-title{font-weight:700}.drill{grid-template-columns:1fr 1fr;column-gap:24px;margin:0;padding:0;list-style:none;display:grid}.drill li{break-inside:avoid;border-bottom:1px dashed #ddd;align-items:center;gap:8px;padding:10px 0;font-size:18px;display:flex}.drill .num{color:#888;min-width:2.4em;font-size:14px}.drill-q{white-space:pre-wrap}.drill-blank{border-bottom:1px solid #999;flex:1;min-width:3em;height:1.4em}.drill-answers li{font-size:16px}.ad-slot{text-align:center;min-height:100px;margin:24px 0}.ad-label{color:var(--muted);margin-bottom:4px;font-size:11px;display:block}.ad-placeholder{border:2px dashed var(--line);color:var(--muted);border-radius:12px;place-items:center;font-size:13px;display:grid}.site-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;max-width:760px;margin:0 auto;padding:14px 16px 0;display:flex}.site-header a{color:var(--ink);text-decoration:none}.site-logo{font-weight:700;color:var(--accent-dark)!important}.site-header nav{gap:16px;font-size:14px;display:flex}.site-header nav a:hover{color:var(--accent-dark)}.site-footer{border-top:1px solid var(--line);max-width:760px;color:var(--muted);text-align:center;margin:0 auto;padding:24px 16px 40px;font-size:12px}.site-footer nav{flex-wrap:wrap;justify-content:center;gap:8px 20px;margin-bottom:12px;font-size:13px;display:flex}.site-footer a{color:var(--muted)}.site-footer p{margin:4px 0}.page{max-width:720px}.page h1{font-size:clamp(22px,5vw,28px);line-height:1.5}.page h2{border-left:4px solid var(--accent);margin:32px 0 8px;padding-left:10px;font-size:19px}.page p,.page li{font-size:16px}.page a{color:var(--accent-dark)}.page-date{color:var(--muted);font-size:13px!important}.cta{text-align:center;margin:32px 0;font-weight:700}.info-table{border-collapse:collapse;width:100%}.info-table th,.info-table td{border:1px solid var(--line);text-align:left;background:var(--card);padding:8px 12px}.info-table th{background:var(--soft);width:9em}.article-links h2{margin:40px 0 12px;font-size:20px}.article-links ul{gap:10px;margin:0;padding:0;list-style:none;display:grid}.article-links a{border:1px solid var(--line);background:var(--card);color:var(--ink);border-radius:14px;gap:2px;padding:14px 16px;text-decoration:none;display:grid}.article-links a:hover{border-color:var(--accent)}.article-title{font-weight:700}.article-desc{color:var(--muted);font-size:13px}.juku{background:var(--card);border:2px solid var(--soft);border-radius:20px;margin:40px 0 8px;padding:24px;box-shadow:0 6px 24px #78501e0f}.juku h2{border:0!important;margin:4px 0 12px!important;padding:0!important;font-size:20px!important}.juku p{margin:0 0 8px;font-size:15px}.juku-eyebrow{color:var(--accent-dark);font-weight:700;margin:0!important;font-size:13px!important}.juku-actions{flex-wrap:wrap;gap:10px;margin-top:16px;display:flex}.juku-actions a{border-radius:14px;padding:12px 20px;font-weight:700;text-decoration:none}.juku-line{background:#06c755;color:#fff!important}.juku-hp{border:1px solid var(--accent);background:#fff;color:var(--accent-dark)!important}.juku-qr{color:var(--muted);align-items:center;gap:12px;margin-top:16px;font-size:13px;display:flex}@media (max-width:720px),(pointer:coarse){.juku-qr{display:none}}.screen-hidden{display:none}@media (max-width:520px){.row{grid-template-columns:1fr}.card,.sheet{padding:20px 16px}.answer-space{width:100%}.drill{grid-template-columns:1fr}.tab{font-size:13px}}@media print{@page{size:A4;margin:14mm}body{background:#fff}main{max-width:none;padding:0}.no-print{display:none!important}.sheet{border:0;margin:0;padding:0}.sheet.answers,.sheet.screen-hidden{break-before:page;display:block}.parent-tip{background:0 0;border:1px solid #ccc}}