: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}
.os-tabs{display:flex;gap:6px;margin:14px 0;flex-wrap:wrap}
.os-tab{padding:8px 16px;border:1px solid var(--cpp-line);border-radius:6px;cursor:pointer;background:#fff;font-weight:700;font-size:13.5px;color:var(--cpp-ink-2)}
.os-tab.on{background:var(--cpp-accent);border-color:var(--cpp-accent);color:#fff}
.os-panel{display:none}.os-panel.on{display:block}
section.block{background:var(--cpp-card);border:1px solid var(--cpp-line);border-radius:12px;padding:28px 30px;margin:20px 0}
section.block h2{font-size:22px;font-weight:700;color:var(--cpp-ink);margin-bottom:14px;border-left:3px solid var(--cpp-accent);padding-left:12px}
section.block h3{font-size:16.5px;font-weight:700;color:var(--cpp-ink);margin:20px 0 10px}
section.block p{font-size:15px;color:var(--cpp-ink-2);line-height:1.9;margin:10px 0}
section.block b{color:var(--cpp-ink)}
section.block code{background:#eef4fa;border:1px solid var(--cpp-line);padding:1px 6px;border-radius:4px;font-size:13.5px;color:var(--cpp-ink);font-family:"Consolas","Monaco",monospace}
section.block ul{font-size:15px;color:var(--cpp-ink-2);line-height:1.95;padding-left:22px;margin:10px 0}
.note{background:var(--cpp-bg-2);border-left:3px solid var(--cpp-accent-2);padding:12px 16px;border-radius:0 8px 8px 0;margin:14px 0;font-size:14px;color:var(--cpp-ink-2);line-height:1.8}
.cmd{background:#0f172a;color:#86efac;font-family:monospace;font-size:13px;padding:12px 16px;border-radius:6px;line-height:1.8;overflow-x:auto;margin:10px 0;white-space:pre}
.cmd .p{color:#60a5fa;user-select:none}
.cmd .c{color:#64748b}
.algo-tbl{width:100%;border-collapse:collapse;font-size:13px;margin:12px 0}
.algo-tbl th,.algo-tbl td{border:1px solid var(--cpp-line);padding:8px 10px;text-align:left}
.algo-tbl th{background:var(--cpp-bg-2);font-weight:700}
.algo-tbl code{background:#f1f5f9;padding:1px 5px;border-radius:3px;font-size:12px}
.step{display:grid;grid-template-columns:40px 1fr;gap:12px;padding:12px 14px;margin:8px 0;background:#fff;border:1px solid var(--cpp-line);border-radius:8px}
.step-num{background:var(--cpp-accent);color:#fff;border-radius:50%;width:32px;height:32px;line-height:32px;text-align:center;font-weight:700;font-size:14px}
.step-body{font-size:14.5px;line-height:1.8;color:var(--cpp-ink-2)}
.step-body b{color:var(--cpp-ink)}
.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}