:root{--ink:#1d2939;--muted:#66758a;--paper:#f4f6fa;--white:#fff;--line:#e1e7ef;--navy:#17283e;--deep:#0e1a2b;--blue:#456f9e;--pale:#eaf0f7;--gold:#bd9c67;--shadow:0 14px 38px rgba(20,36,58,.08)}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:Arial,Helvetica,sans-serif;line-height:1.72}.topbar{height:70px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 max(20px,calc((100vw - 1280px)/2))}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:850;font-size:18px}.brand-icon{width:36px;height:36px;display:grid;place-items:center;background:var(--navy);color:#fff;border-radius:12px;font-family:Georgia,serif;font-size:22px}.brand-thin{font-weight:500;color:var(--blue)}.topbar nav{display:flex;gap:22px}.topbar nav a{font-size:13px;text-decoration:none;color:var(--blue);font-weight:750}.page-grid{max-width:1290px;margin:28px auto 66px;padding:0 22px;display:grid;grid-template-columns:280px minmax(0,1fr);gap:25px}.sidebar{align-self:start;position:sticky;top:18px;max-height:calc(100vh - 36px);overflow:auto;background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px 14px;box-shadow:var(--shadow)}.side-heading{font-size:10px;letter-spacing:1.5px;color:var(--muted);font-weight:850;padding:4px 10px 12px}.toc-home,.toc-link{display:flex;gap:9px;align-items:flex-start;padding:8px 10px;margin:2px 0;border-radius:9px;color:#44536a;text-decoration:none;font-size:12px;line-height:1.4}.toc-link span{flex:0 0 23px;color:#8b98a9;font-weight:800}.toc-home{font-weight:800}.toc-link:hover,.toc-home:hover{background:var(--pale);color:var(--navy)}.toc-link.active,.toc-home.active{background:var(--pale);color:var(--navy);font-weight:800}.side-note{margin:15px 8px 4px;padding:12px;border-top:1px solid var(--line);color:var(--muted);font-size:11px}.main{min-width:0;background:var(--white);border:1px solid var(--line);border-radius:18px;padding:clamp(24px,4vw,54px);box-shadow:var(--shadow)}.eyebrow,.chapter-kicker{display:inline-block;color:var(--blue);font-size:11px;font-weight:850;letter-spacing:1.5px;text-transform:uppercase;margin-bottom:10px}.main h1{font-family:Georgia,serif;color:var(--navy);font-size:clamp(32px,4.2vw,48px);line-height:1.13;margin:0 0 14px}.main h2{font-family:Georgia,serif;color:var(--navy);font-size:25px;line-height:1.28;margin:30px 0 10px}.main p{margin:0 0 16px}.main a:not(.button){color:#315f91;text-underline-offset:3px}.lead{font-size:18px;color:#53657b;line-height:1.6;margin:0 0 26px}.hero{padding:clamp(26px,4vw,52px);border-radius:16px;background:linear-gradient(130deg,#13263e,#263f5d 68%,#526d8e);color:#fff;margin-bottom:30px}.hero .eyebrow{color:#d8e3ef}.hero h1{color:#fff;max-width:790px}.hero p{color:#e7edf4;max-width:760px;font-size:18px}.pill-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:22px}.pill{border:1px solid rgba(255,255,255,.3);color:#f4f7fb;padding:5px 10px;border-radius:20px;font-size:11px;font-weight:700}.callout{border-left:4px solid var(--gold);background:#f8f6f1;padding:17px 20px;margin:24px 0;border-radius:0 12px 12px 0}.callout p:last-child{margin-bottom:0}.affiliate-box{background:#f3f6fa;border:1px solid #dce5ef;border-radius:14px;padding:20px;margin:28px 0}.affiliate-box p{font-size:13px;color:#46576c}.button{display:inline-block;background:var(--navy);color:#fff!important;text-decoration:none;font-weight:800;padding:11px 18px;border-radius:9px;font-size:14px}.button:hover{background:#27466a}.small{font-size:12px!important;color:var(--muted)!important;margin:12px 0 0!important}.chapter-nav{display:flex;justify-content:space-between;gap:14px;border-top:1px solid var(--line);padding-top:22px;margin-top:34px}.chapter-nav a{font-size:13px;font-weight:800;text-decoration:none}.chapter-nav .next{text-align:right;margin-left:auto}.chapter-nav span{display:block;color:var(--muted);font-size:10px;letter-spacing:1px;text-transform:uppercase;margin-bottom:4px}.chapter-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:22px 0}.chapter-card{display:flex;gap:12px;text-decoration:none;color:var(--ink)!important;border:1px solid var(--line);padding:14px;border-radius:12px;background:#fff}.chapter-card:hover{border-color:#b8c8db;background:#f8fafd}.chapter-card b{font-size:11px;color:var(--blue);min-width:24px}.chapter-card strong{display:block;font-size:13px;color:var(--navy);line-height:1.35}.chapter-card small{display:block;color:var(--muted);font-size:11px;line-height:1.45;margin-top:4px}.info-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:22px 0}.info-card{background:#f7f9fc;border:1px solid var(--line);border-radius:12px;padding:16px}.info-card strong{display:block;color:var(--navy);margin-bottom:6px}.info-card p{font-size:13px;color:#53647a;margin:0}.site-disclaimer{border-top:1px solid var(--line);padding-top:16px;margin-top:34px;color:var(--muted);font-size:12px;line-height:1.6}.footer{max-width:1240px;margin:0 auto 30px;padding:0 22px;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap;color:var(--muted);font-size:11px}.footer a{color:var(--blue);text-decoration:none;font-weight:750}.mobile-toc{display:none}.references li{margin-bottom:16px;padding-left:4px}.references li strong{display:block;color:var(--navy)}.references li span{display:block;color:var(--muted);font-size:12px}@media(max-width:940px){.page-grid{grid-template-columns:1fr;margin-top:16px}.sidebar{display:none}.mobile-toc{display:block;margin:14px 18px 0}.mobile-toc details{background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);overflow:hidden}.mobile-toc summary{padding:13px 16px;font-size:13px;font-weight:800;color:var(--navy);cursor:pointer}.mobile-links{max-height:55vh;overflow:auto;border-top:1px solid var(--line);padding:8px}.mobile-links a{display:block;text-decoration:none;color:#46566c;font-size:12px;padding:7px 9px;border-radius:7px}}@media(max-width:650px){.topbar{height:62px;padding:0 16px}.brand{font-size:16px}.topbar nav{gap:13px}.topbar nav a{font-size:12px}.page-grid{padding:0 12px;margin:12px auto 40px}.main{padding:22px 18px;border-radius:14px}.main h1{font-size:34px}.main h2{font-size:22px}.lead{font-size:16px}.hero{padding:25px 20px}.chapter-cards,.info-grid{grid-template-columns:1fr}.chapter-nav{align-items:flex-start}.footer{padding:0 16px}}