:root{--navy:#0b2d67;--blue:#176cff;--line:#dbe8f7;--muted:#617493;--shadow:0 18px 48px rgba(25,70,118,.1)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--navy);background:#fff;-webkit-font-smoothing:antialiased}a{text-decoration:none;color:inherit}.container{width:min(1180px,calc(100% - 36px));margin:auto}.header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);backdrop-filter:blur(16px);border-bottom:1px solid #e3edf8}.nav{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:10px;font-size:21px;font-weight:900}.brand img{width:40px;height:40px}.navlinks{display:flex;gap:22px;font-size:13px;font-weight:780}.navlinks a:hover{color:var(--blue)}.nav-button{padding:11px 17px;border-radius:13px;background:var(--blue);color:#fff;font-weight:850}.hero{padding:70px 0 0;background:linear-gradient(118deg,#f5faff,#e2f1ff);overflow:hidden}.breadcrumb{font-size:13px;color:#5d7394;margin-bottom:23px}.breadcrumb a{color:var(--blue);font-weight:800}.category{display:inline-flex;padding:8px 12px;border:1px solid #cadff8;border-radius:999px;background:#fff;color:var(--blue);font-size:11px;font-weight:900;letter-spacing:.1em}.hero h1{max-width:980px;font-size:clamp(42px,5vw,68px);line-height:1.04;letter-spacing:-3.2px;margin:20px 0}.lead{max-width:820px;color:#526b90;font-size:18px;line-height:1.7}.meta{display:flex;gap:18px;flex-wrap:wrap;margin:24px 0 42px;color:#657b9b;font-size:13px;font-weight:700}.cover{height:min(46vw,520px);min-height:280px;border-radius:26px 26px 0 0;overflow:hidden;box-shadow:var(--shadow)}.cover img{display:block;width:100%;height:100%;object-fit:cover}.layout{display:grid;grid-template-columns:minmax(0,800px) 280px;gap:54px;align-items:start;padding:70px 0 92px}.article-body{font-family:Georgia,"Times New Roman",serif;color:#243b61;font-size:18px;line-height:1.88}.article-body>p:first-child{font-size:21px;color:#183766;line-height:1.75}.article-body h2{font-family:Inter,ui-sans-serif,system-ui,sans-serif;font-size:31px;line-height:1.2;color:var(--navy);letter-spacing:-1px;margin:54px 0 18px}.article-body p{margin:0 0 23px}.article-body ul,.article-body ol{margin:20px 0 28px;padding-left:28px}.article-body li{margin-bottom:10px}.callout,.research{margin:30px 0;padding:22px;border:1px solid var(--line);border-radius:18px;background:#f5f9ff;font-family:Inter,ui-sans-serif,system-ui,sans-serif;font-size:14px;line-height:1.7}.sidebar{position:sticky;top:94px}.card{border:1px solid var(--line);border-radius:22px;background:#fff;padding:23px;box-shadow:var(--shadow);margin-bottom:18px}.card h2{font-size:17px;margin:0 0 13px}.toc{display:grid;gap:10px}.toc a{font-size:13px;color:#607595;line-height:1.45}.toc a:hover{color:var(--blue)}.notice{border-radius:22px;padding:24px;background:linear-gradient(145deg,#176cff,#0f58d3);color:#fff}.notice h2{font-size:17px;margin:0 0 10px}.notice p{color:#dceaff;font-size:13px;line-height:1.65;margin:0}.article-nav{display:flex;justify-content:space-between;gap:12px;margin-top:52px;padding-top:25px;border-top:1px solid var(--line);font-family:Inter,ui-sans-serif,system-ui,sans-serif}.article-nav a{padding:12px 15px;border:1px solid #cddff5;border-radius:13px;color:var(--blue);font-weight:850}.footer{padding:44px 0;background:#0d2b61;color:#fff}.footer-row{display:flex;justify-content:space-between;align-items:center;gap:24px}.footer p{font-size:12px;color:#b9cae7;margin:0}
@media(max-width:900px){.navlinks{display:none}.layout{grid-template-columns:1fr}.sidebar{position:static}.cover{height:48vw}.hero h1{letter-spacing:-2px}}
@media(max-width:620px){.container{width:min(100% - 24px,1180px)}.hero{padding-top:48px}.hero h1{font-size:41px}.layout{padding-top:46px}.article-body{font-size:17px}.article-body h2{font-size:27px}.article-nav,.footer-row{display:grid}}