: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}
section.block{background:var(--cpp-card);border:1px solid var(--cpp-line);border-radius:12px;padding:22px 26px;margin:16px 0}
section.block h2{font-size:20px;font-weight:700;color:var(--cpp-ink);margin-bottom:10px;border-left:3px solid var(--cpp-accent);padding-left:12px}
.book{display:grid;grid-template-columns:48px 1fr;gap:14px;padding:14px 0;border-bottom:1px solid var(--cpp-line)}
.book:last-child{border-bottom:none}
.rank{background:var(--cpp-accent);color:#fff;width:40px;height:40px;border-radius:50%;line-height:40px;text-align:center;font-weight:800;font-size:17px}
.rank.g{background:linear-gradient(135deg,#fbbf24,#d97706)}
.rank.s{background:linear-gradient(135deg,#cbd5e1,#94a3b8)}
.rank.b{background:linear-gradient(135deg,#fb923c,#c2410c)}
.book-body h3{font-size:16px;font-weight:800;color:var(--cpp-ink);margin-bottom:2px}
.book-body .author{font-size:13px;color:var(--cpp-muted);margin-bottom:6px}
.book-body .lvl{display:inline-block;font-size:10.5px;padding:2px 8px;border-radius:3px;font-weight:700;margin-right:6px}
.book-body .lvl.b{background:#dcfce7;color:#14532d}
.book-body .lvl.m{background:#fef3c7;color:#854d0e}
.book-body .lvl.h{background:#fee2e2;color:#991b1b}
.book-body p{font-size:13.5px;color:var(--cpp-ink-2);line-height:1.8;margin:6px 0}
.book-body .for{font-size:12.5px;color:var(--cpp-ink-2);background:var(--cpp-bg-2);border-radius:4px;padding:4px 8px;display:inline-block;margin-top:4px}
.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}