: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}
.prim{background:var(--cpp-bg-2);border:1px solid var(--cpp-line);border-radius:10px;padding:16px 20px;margin:16px 0;font-size:14px;line-height:1.9;color:var(--cpp-ink-2)}
.prim h3{font-size:14px;color:var(--cpp-accent);margin-bottom:8px;font-weight:700;letter-spacing:.03em}
.prim pre{background:#0f172a;color:#cbd5e1;padding:10px 14px;border-radius:6px;font-family:monospace;font-size:12.5px;line-height:1.7;overflow-x:auto;margin:6px 0}
.prim pre .k{color:#c084fc}.prim pre .f{color:#60a5fa}.prim pre .s{color:#86efac}.prim pre .c{color:#64748b;font-style:italic}.prim pre .t{color:#22d3ee}
.tq{background:#fff;border:1px solid var(--cpp-line);border-radius:10px;padding:16px 20px;margin:12px 0}
.tq h3{font-size:15px;font-weight:700;color:var(--cpp-ink);margin-bottom:10px;display:flex;gap:10px;align-items:center}
.tq .num{background:var(--cpp-accent);color:#fff;font-size:12px;padding:2px 10px;border-radius:10px;min-width:40px;text-align:center}
.tq pre{background:#0f172a;color:#cbd5e1;padding:10px 14px;border-radius:6px;font-family:monospace;font-size:12.5px;line-height:1.7;overflow-x:auto;margin:6px 0}
.tq pre .k{color:#c084fc}.tq pre .f{color:#60a5fa}.tq pre .s{color:#86efac}.tq pre .c{color:#64748b;font-style:italic}.tq pre .t{color:#22d3ee}.tq pre .n{color:#fbbf24}
.tq .q{font-size:13.5px;color:var(--cpp-ink-2);margin-top:8px}
.ans-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin:10px 0}
@media(max-width:640px){.ans-grid{grid-template-columns:repeat(2,1fr)}}
.ans-lab{display:flex;gap:6px;align-items:center;background:var(--cpp-bg);padding:6px 10px;border-radius:6px;font-size:12.5px}
.ans-lab label{color:var(--cpp-muted);width:44px;font-weight:700}
.ans-lab input{flex:1;width:auto;padding:4px 8px;border:1px solid var(--cpp-line);border-radius:4px;font-family:monospace;font-size:13px;text-align:center}
.ans-lab input.ok{background:#dcfce7;border-color:#22a56a}
.ans-lab input.ng{background:#fee2e2;border-color:#dc2626}
.tq button{background:var(--cpp-accent);color:#fff;border:none;padding:6px 14px;border-radius:5px;font-size:12.5px;font-weight:700;cursor:pointer;margin-top:6px;font-family:inherit}
.tq .exp{display:none;margin-top:10px;padding:10px 14px;background:var(--cpp-bg-2);border-left:3px solid var(--cpp-accent-2);border-radius:0 6px 6px 0;font-size:13px;color:var(--cpp-ink-2);line-height:1.8}
.tq.rev .exp{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}