:root{--primary: #0277bd;--primary-hover: #b45309;--text-main: #1e293b;--text-muted: #64748b;--bg-light: #f8fafc;--line: #e2e8f0;--card-shadow: 0 10px 25px -5px rgba(3, 169, 244, .05), 0 8px 10px -6px rgba(3, 169, 244, .05);--card-shadow-hover: 0 20px 25px -5px rgba(3, 169, 244, .15), 0 10px 10px -5px rgba(3, 169, 244, .1)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:#f1f5f9;color:var(--text-main);line-height:1.6;-webkit-font-smoothing:antialiased}a{color:var(--primary);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease}a:hover{color:var(--primary-hover)}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}header{position:sticky;top:0;z-index:100;background:#fffffff2;backdrop-filter:blur(10px);box-shadow:0 1px 2px #0000000d}.nav-inner{padding:18px 0;display:flex;justify-content:space-between;align-items:center;gap:24px}.logo{color:var(--text-main);font-size:22px;font-weight:700;white-space:nowrap}.logo span{color:#075985;font-size:13px;margin-left:6px;font-weight:400;background:#e0f2fe;padding:2px 8px;border-radius:4px}.nav-menu{list-style:none;display:flex;align-items:center;gap:24px}.nav-menu a{color:var(--text-muted);font-weight:500;font-size:15px}.nav-menu a:hover{color:var(--primary)}main{min-height:calc(100vh - 172px)}.blog-hero{background:#fff;padding:72px 0 44px;border-bottom:1px solid var(--line);text-align:center}.blog-hero h1{color:var(--text-main);font-size:34px;line-height:1.25;font-weight:800;margin-bottom:12px}.blog-hero p{max-width:680px;margin:0 auto;color:var(--text-muted);font-size:15px}.content-wrap{padding:56px 0 80px}.article-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.article-card{overflow:hidden;height:100%;background:#fff;border:1px solid #e2e8f0;border-radius:8px;box-shadow:var(--card-shadow);transition:transform .25s ease,box-shadow .25s ease}.article-card:hover{transform:translateY(-3px);box-shadow:var(--card-shadow-hover)}.article-card h2,.article-card p,.article-card .tag-list{margin-left:26px;margin-right:26px}.article-card h2{font-size:18px;line-height:1.35;margin-top:18px;margin-bottom:10px}.article-card p{color:var(--text-muted);font-size:14px}.article-cover-link{display:block;color:inherit}.article-cover{display:block;width:100%;height:150px;object-fit:cover;background:#e2e8f0}.meta{color:#94a3b8;font-size:14px}.tag-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;margin-bottom:26px}.tag{color:var(--primary);background:#03a9f41a;border-radius:4px;padding:3px 9px;font-size:12px;font-weight:600}.article-shell{max-width:960px;margin:0 auto;background:#fff;border:1px solid #e2e8f0;border-radius:8px;padding:clamp(24px,4vw,44px);box-shadow:var(--card-shadow)}.article-head{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:32px;align-items:center;padding-bottom:30px;border-bottom:1px solid #e2e8f0}.article-shell h1{font-size:clamp(28px,4vw,38px);line-height:1.25;margin:0 0 14px}.article-lead{color:var(--text-muted);font-size:16px}.article-hero-image{display:block;width:100%;height:150px;object-fit:cover;border-radius:8px;background:#e2e8f0}.article-body{max-width:720px;margin-top:34px;font-size:17px;color:#334155}.article-body h2{font-size:26px;line-height:1.35;margin:36px 0 12px}.article-body h3{font-size:21px;margin:28px 0 10px}.article-body p,.article-body ul,.article-body ol{margin:0 0 18px}.article-body ul,.article-body ol{padding-left:1.4em}.article-body strong{color:#0f172a}.back-link{display:inline-flex;margin-bottom:24px;font-weight:700}footer{background-color:#0f172a;color:#cbd5e1;padding:48px 0;text-align:center;font-size:13px}.footer-brand{color:#f8fafc;font-weight:600;margin-bottom:16px;font-size:14px}footer p{margin-bottom:10px}footer a{color:#7dd3fc;text-decoration:underline;text-underline-offset:3px}footer a:hover{color:#fff}@media(max-width:760px){.nav-inner{flex-direction:column;gap:15px;text-align:center}.nav-menu{gap:15px;flex-wrap:wrap;justify-content:center}.article-grid{grid-template-columns:1fr}.blog-hero{padding:52px 0 34px}.blog-hero h1{font-size:30px}.article-cover{height:132px}.article-head{grid-template-columns:1fr;gap:22px}.article-hero-image{height:138px}}