:root{--bg:#17223b;--surface:#ffffff;--paper:#fffdf9;--ink:#202739;--accent:#ff4d5f;--hot:#176b87;--line:#ded8cc;--muted:#657385;--radius:18px;--shadow:0 18px 55px rgba(8,24,42,.10)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:"Hiragino Kaku Gothic ProN","Yu Gothic",system-ui,sans-serif;font-size:16px;line-height:1.85}a{color:inherit}img{max-width:100%}.wrap{width:min(1160px,calc(100% - 40px));margin:auto}.site-header{background:var(--bg);color:#fff;position:sticky;top:0;z-index:30;border-bottom:1px solid rgba(255,255,255,.12)}.head-inner{min-height:74px;display:flex;align-items:center;gap:24px}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;font-weight:900;letter-spacing:.03em}.brand-mark{display:grid;place-items:center;width:40px;height:40px;background:var(--accent);color:var(--bg);border-radius:12px;font-size:.78rem}.brand-copy 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.route-kicker{color:var(--accent);font-weight:900;font-size:.78rem;letter-spacing:.12em}.route-box h2{margin:8px 0 10px;color:#fff}.route-box a{display:inline-block;margin-top:8px;background:var(--accent);color:var(--bg);font-weight:900;text-decoration:none;padding:12px 18px;border-radius:10px}.route-box small{display:block;margin-top:12px;color:#bfcad5}.sources{border-top:1px solid var(--line);margin-top:38px;padding-top:26px}.sources li{margin-bottom:8px}.toc{position:sticky;top:96px;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:20px}.toc a{display:block;text-decoration:none;padding:8px 0;border-bottom:1px solid var(--line);font-size:.88rem}.toc small{display:block;color:var(--muted);margin-top:14px}.site-footer{background:var(--bg);color:#d6dee7;padding:42px 0;margin-top:50px}.footer-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:30px}.footer-links{display:flex;gap:16px;flex-wrap:wrap}.footer-links 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