: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 a:hover{color:var(--cpp-accent)}
.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}
.intro-box{background:var(--cpp-card);border:1px solid var(--cpp-line);border-radius:10px;padding:18px 22px;margin:20px 0}
.intro-box h3{font-size:14px;font-weight:700;color:var(--cpp-ink);margin-bottom:10px}
.intro-box ul{font-size:14px;color:var(--cpp-ink-2);line-height:1.9;margin:0;padding-left:22px}
.score-bar{position:sticky;top:53px;z-index:40;background:#fff;border:1px solid var(--cpp-line);border-radius:10px;padding:14px 18px;margin:16px 0}
.score-row{display:flex;align-items:center;gap:14px;font-size:14px;color:var(--cpp-ink-2);flex-wrap:wrap}
.score-row b{color:var(--cpp-ink);font-size:18px}
.score-progress{margin-top:10px;height:6px;background:var(--cpp-bg-2);border-radius:3px;overflow:hidden}
.score-fill{height:100%;width:0%;background:linear-gradient(90deg,var(--cpp-accent-2),var(--cpp-accent));transition:width .3s}
.q{border:1px solid var(--cpp-line);border-radius:8px;padding:18px 20px;margin:14px 0;background:var(--cpp-bg)}
.q h3{font-size:15.5px;font-weight:700;color:var(--cpp-ink);margin-bottom:12px;line-height:1.6}
.q h3 .num{display:inline-block;margin-right:6px;padding:2px 8px;background:var(--cpp-accent);color:#fff;border-radius:4px;font-size:12px;font-weight:800}
.q-opt{display:block;padding:10px 14px;margin:6px 0;border:1px solid var(--cpp-line);border-radius:6px;background:#fff;cursor:pointer;font-size:14.5px;color:var(--cpp-ink-2);font-family:"Consolas","Monaco",monospace}
.q-opt:hover{border-color:var(--cpp-accent-2);background:#eaf4fb}
.q-opt.ok{border-color:#22a56a;background:#e9f7ef;color:#185a38;font-weight:700}
.q-opt.ng{border-color:#dc2626;background:#fbeaea;color:#8a1a1a}
.q-opt.disabled{pointer-events:none}
.q-ex{display:none;margin-top:10px;padding:12px 14px;background:#fff;border:1px solid var(--cpp-line);border-left:3px solid var(--cpp-accent-2);border-radius:6px;font-size:13.5px;color:var(--cpp-ink-2);line-height:1.8}
.q-ex.show{display:block}
.result{display:none;margin:32px 0;padding:32px;text-align:center;background:var(--cpp-card);border:2px solid var(--cpp-accent);border-radius:12px}
.result.show{display:block}
.result h2{font-size:22px;font-weight:800;color:var(--cpp-ink);margin-bottom:14px}
.result-score{font-size:54px;font-weight:800;color:var(--cpp-accent);font-family:"Consolas","Monaco",monospace;margin:12px 0}
.result-retry{display:inline-block;margin-top:10px;padding:10px 22px;background:var(--cpp-accent);color:#fff;border-radius:6px;text-decoration:none;font-weight:700;border:none;cursor:pointer;font-size:14px}
.related{margin:32px 0 10px}
.related h2{font-size:18px;font-weight:700;color:var(--cpp-ink);margin-bottom:12px;border-left:3px solid var(--cpp-accent);padding-left:12px}
.rel-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:10px}
.rel-card{display:block;background:var(--cpp-card);border:1px solid var(--cpp-line);border-radius:8px;padding:14px 16px;text-decoration:none;color:inherit}
.rel-card:hover{border-color:var(--cpp-accent);background:var(--cpp-bg-2)}
.rel-card .k{font-size:11px;color:var(--cpp-muted);font-weight:700}
.rel-card .t{font-size:14.5px;font-weight:700;color:var(--cpp-ink);margin-top:3px}
.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}