:root{--cpp-ink:#0f1b2d;--cpp-ink-2:#334155;--cpp-muted:#64748b;--cpp-line:#dfe7ef;--cpp-bg:#f7fafd;--cpp-bg-2:#eef4fa;--cpp-card:#ffffff;--cpp-accent:#0369a1;--cpp-accent-2:#0ea5e9}
body{font-family:"Hiragino Sans","Noto Sans JP","Yu Gothic",system-ui,-apple-system,sans-serif!important;background:#f7fafd!important;color:var(--cpp-ink)!important;line-height:1.72!important}
.top-nav{position:sticky;top:0;z-index:50;background:rgba(247,250,253,.92);backdrop-filter:saturate(150%) blur(8px);border-bottom:1px solid var(--cpp-line)}
.top-nav-inner{max-width:1120px;margin:0 auto;padding:12px 20px;display:flex;gap:20px;align-items:center;flex-wrap:wrap;font-size:14px}
.top-nav .brand{font-weight:800;color:var(--cpp-ink);text-decoration:none;font-size:15px}
.top-nav .brand em{font-style:normal;color:var(--cpp-accent)}
.top-nav-links{display:flex;gap:16px;margin-left:auto;flex-wrap:wrap;align-items:center}
.top-nav-links a{color:var(--cpp-ink-2);text-decoration:none;font-weight:600}
.top-nav-links .div{color:#cbd5e1}
.page-wrap{max-width:920px;margin:0 auto;padding:0 20px}
.crumb{padding:16px 0 8px;font-size:13px;color:var(--cpp-muted)}
.crumb a{color:var(--cpp-accent);text-decoration:none}
.page-head{padding:24px 0 12px}
.page-head h1{font-size:clamp(26px,3.5vw,34px);font-weight:800;color:var(--cpp-ink);line-height:1.4}
.page-head .lead{color:var(--cpp-ink-2);font-size:15.5px;margin-top:10px;line-height:1.8}
.score-panel{background:linear-gradient(135deg,var(--cpp-accent),var(--cpp-accent-2));color:#fff;border-radius:12px;padding:18px 22px;margin:16px 0;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px}
.score-panel .score{font-size:22px;font-weight:800}
.score-panel .score span{font-size:14px;opacity:.85;margin-left:6px}
.score-panel button{background:#fff;color:var(--cpp-accent);border:none;padding:10px 20px;border-radius:6px;font-weight:700;cursor:pointer;font-size:14px;font-family:inherit}
.fq{background:#fff;border:1px solid var(--cpp-line);border-radius:10px;padding:14px 20px;margin:10px 0}
.fq .hdr{display:flex;gap:10px;align-items:center;margin-bottom:6px}
.fq .num{background:var(--cpp-accent);color:#fff;padding:2px 10px;border-radius:10px;font-size:12px;font-weight:700;min-width:40px;text-align:center}
.fq .topic{font-size:11px;padding:2px 8px;border-radius:3px;background:var(--cpp-bg-2);color:var(--cpp-ink-2);font-weight:700}
.fq p{font-size:14px;color:var(--cpp-ink-2);line-height:1.85;margin:4px 0}
.fq code{background:#0f172a;color:#cbd5e1;padding:2px 6px;border-radius:3px;font-family:monospace;font-size:12.5px}
.fill{display:inline-block;background:#fef3c7;border:1px solid #d97706;border-radius:4px;padding:2px 8px;font-family:monospace;font-size:12.5px;min-width:80px;color:#0f172a;outline:none}
.fill:focus{border-color:var(--cpp-accent);background:#fff}
.fill.ok{background:#dcfce7;border-color:#22a56a;color:#14532d}
.fill.ng{background:#fee2e2;border-color:#dc2626;color:#991b1b}
.fq .hint{margin-top:6px;font-size:12.5px;color:var(--cpp-muted);display:none}
.fq.rev .hint{display:block}
.pager{margin:20px 0;display:flex;gap:12px;flex-wrap:wrap}
.pager a{flex:1;min-width:220px;display:block;background:var(--cpp-card);border:1px solid var(--cpp-line);border-radius:8px;padding:16px 18px;text-decoration:none;color:inherit}
.pager a.next{text-align:right;background:var(--cpp-bg-2)}
.pager a .k{font-size:11px;color:var(--cpp-muted)}
.pager a .t{font-size:14.5px;font-weight:700;color:var(--cpp-ink);margin-top:4px}
.page-footer{max-width:1120px;margin:30px auto 0;padding:20px;color:var(--cpp-muted);font-size:13px;border-top:1px solid var(--cpp-line);display:flex;gap:16px;justify-content:space-between;flex-wrap:wrap}
.page-footer a{color:var(--cpp-ink-2);text-decoration:none}