.site-header{background:#fff;border-bottom:1px solid #e2e8f0;position:sticky;top:0;z-index:100}.header-inner{max-width:1200px;margin:0 auto;padding:14px 24px;display:flex;align-items:center;gap:24px}.logo{display:flex;align-items:center;text-decoration:none}.logo:hover{opacity:.85;text-decoration:none}.logo-img{height:32px;display:block}.nav-main{display:flex;gap:18px;flex:1}.nav-main a{color:#475569;font-size:15px;font-weight:500;text-decoration:none;transition:color .15s}.nav-main a:hover{color:#2563eb}.nav-main a.active{color:#2563eb;font-weight:700}.header-cta{display:flex;gap:10px}.header-cta .btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:8px 18px;border-radius:6px;font-size:14px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:all .15s;font-family:inherit;white-space:nowrap;text-decoration:none}.header-cta .btn-primary{background:#2563eb;color:#fff;box-shadow:0 2px 8px #2563eb33}.header-cta .btn-primary:hover{background:#1d4ed8;transform:translateY(-1px);text-decoration:none}.header-cta .btn-outline{background:#fff;color:#2563eb;border-color:#2563eb}.header-cta .btn-outline:hover{background:#dbeafe;text-decoration:none}:root{--accent: #2563eb;--accent-strong: #1d4ed8;--accent-soft: #dbeafe;--text: #0f172a;--text-muted: #475569;--border: #e2e8f0;--bg: #f8fafc}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Hiragino Kaku Gothic ProN,Hiragino Sans,Yu Gothic,Meiryo,sans-serif;color:var(--text);background:var(--bg);line-height:1.7}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.breadcrumb-bar{background:#fff;border-bottom:1px solid var(--border)}.breadcrumbs{max-width:1200px;margin:0 auto;padding:10px 24px;font-size:12px;color:var(--text-muted);display:flex;align-items:center;gap:4px;flex-wrap:wrap}.breadcrumbs a{color:var(--text-muted)}.breadcrumbs a:hover{color:var(--accent);text-decoration:none}.bc-sep{color:#cbd5e1;margin:0 4px}.bc-current{color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:320px}.article-page{background:var(--bg);min-height:calc(100vh - 64px)}.article-container{max-width:1200px;margin:0 auto;padding:40px 24px 80px;display:grid;grid-template-columns:1fr 320px;gap:40px;align-items:start}.article-main{min-width:0}article{background:#fff;border-radius:14px;padding:40px 48px;box-shadow:0 1px 4px #0f172a0f}.article-tags{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:16px}.article-tags .tag{font-size:12px;color:var(--accent);background:var(--accent-soft);padding:3px 10px;border-radius:12px;text-decoration:none;transition:background .15s}.article-tags .tag:hover{background:#bfdbfe;text-decoration:none}.article-title{font-size:30px;line-height:1.45;margin:0 0 16px;color:var(--text);font-weight:800}.article-meta{display:flex;gap:20px;align-items:center;flex-wrap:wrap;color:var(--text-muted);font-size:13px;padding-bottom:24px;border-bottom:1px solid var(--border);margin-bottom:28px}.meta-date,.meta-author{display:flex;align-items:center;gap:5px}.meta-updated{margin-left:6px;font-size:12px}.article-hero{margin:0 0 32px;border-radius:10px;overflow:hidden}.article-hero img{width:100%;height:auto;display:block}.article-content{font-size:16px;line-height:1.85}.article-content h2{font-size:22px;font-weight:800;margin:48px 0 16px;padding:14px 18px;background:var(--accent-soft);border-left:4px solid var(--accent);border-radius:0 6px 6px 0;color:var(--text)}.article-content h3{font-size:18px;font-weight:700;margin:32px 0 12px;padding-bottom:8px;border-bottom:2px solid var(--border);color:var(--text)}.article-content p{margin:0 0 18px}.article-content ul,.article-content ol{margin:0 0 20px;padding-left:1.6em}.article-content li{margin-bottom:8px}.article-content strong{color:var(--text)}.article-content a{color:var(--accent);text-decoration:underline}.article-content code{background:var(--accent-soft);color:var(--accent-strong);padding:2px 6px;border-radius:4px;font-size:.88em}.article-content pre{background:#0f172a;color:#e2e8f0;padding:20px;border-radius:10px;overflow-x:auto;font-size:14px;margin:0 0 20px}.article-content blockquote{border-left:4px solid var(--accent-soft);padding:12px 20px;color:var(--text-muted);margin:20px 0;background:#f8fafc;border-radius:0 8px 8px 0}.article-content table{border-collapse:collapse;width:100%;margin:20px 0;font-size:14px;border-radius:8px;overflow:hidden}.article-content th,.article-content td{border:1px solid var(--border);padding:10px 14px;text-align:left}.article-content th{background:var(--accent-soft);color:var(--accent-strong);font-weight:700}.article-content tr:nth-child(2n){background:#f8fafc}.inline-cta{display:grid;grid-template-columns:auto 1fr auto;gap:18px;align-items:center;background:#fff;border:1px solid var(--accent-soft);border-left:4px solid var(--accent);border-radius:12px;padding:20px 24px;margin:36px 0;box-shadow:0 2px 10px #2563eb0f}.inline-cta-icon{width:44px;height:44px;border-radius:50%;background:var(--accent-soft);color:var(--accent);display:flex;align-items:center;justify-content:center;flex-shrink:0}.inline-cta-body{min-width:0}.inline-cta-lead{font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);margin:0 0 4px}.inline-cta h3{font-size:16px;font-weight:800;color:var(--text);margin:0 0 6px;line-height:1.45;padding:0;border:none;background:none}.inline-cta-desc{font-size:13px;color:var(--text-muted);margin:0;line-height:1.65}.inline-cta-btn{display:inline-flex;align-items:center;padding:11px 20px;border-radius:8px;background:var(--accent);color:#fff!important;font-size:14px;font-weight:700;text-decoration:none;transition:all .15s;white-space:nowrap;flex-shrink:0}.inline-cta-btn:hover{background:var(--accent-strong);transform:translateY(-1px);text-decoration:none;box-shadow:0 4px 12px #2563eb40}.share-bar{display:flex;align-items:center;gap:10px;padding:20px 0 0;margin-top:32px;border-top:1px solid var(--border)}.share-label{font-size:13px;font-weight:600;color:var(--text-muted);margin-right:4px}.share-btn{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;transition:opacity .15s,transform .15s;text-decoration:none}.share-btn:hover{opacity:.8;transform:translateY(-1px);text-decoration:none}.share-x{background:#000;color:#fff}.share-fb{background:#1877f2;color:#fff}.share-li{background:#0a66c2;color:#fff}.related-section{margin-top:40px}.related-title{font-size:20px;font-weight:800;margin:0 0 20px;color:var(--text)}.related-grid{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.related-card{background:#fff;border-radius:10px;overflow:hidden;border:1px solid var(--border);transition:box-shadow .2s,transform .2s}.related-card:hover{box-shadow:0 6px 20px #0f172a1a;transform:translateY(-2px)}.related-card a{display:flex;flex-direction:column;height:100%;color:inherit;text-decoration:none}.related-card a:hover{text-decoration:none}.related-thumb{aspect-ratio:16 / 9;overflow:hidden;background:var(--bg)}.related-thumb img{width:100%;height:100%;object-fit:cover;display:block}.related-body{padding:12px 14px;flex:1;display:flex;flex-direction:column;gap:6px}.related-card-title{font-size:13px;font-weight:700;line-height:1.5;margin:0;color:var(--text);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.related-body time{font-size:11px;color:var(--text-muted);margin-top:auto}.bottom-cta{margin-top:40px;background:linear-gradient(135deg,#1d4ed8,#2563eb 60%,#3b82f6);border-radius:14px;overflow:hidden}.bottom-cta-inner{padding:40px 48px;color:#fff}.bottom-cta-lead{font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;opacity:.8;margin:0 0 8px}.bottom-cta-inner h3{font-size:22px;margin:0 0 12px;line-height:1.4}.bottom-cta-desc{font-size:14px;opacity:.9;margin:0 0 24px;line-height:1.7}.bottom-cta-btns{display:flex;gap:12px;flex-wrap:wrap}.btn-white{display:inline-flex;align-items:center;padding:12px 24px;border-radius:8px;background:#fff;color:var(--accent)!important;font-size:14px;font-weight:700;text-decoration:none;transition:all .15s;border:none}.btn-white:hover{background:#f0f9ff;transform:translateY(-1px);text-decoration:none}.btn-outline-white{display:inline-flex;align-items:center;padding:12px 24px;border-radius:8px;background:transparent;color:#fff!important;font-size:14px;font-weight:700;text-decoration:none;border:2px solid rgba(255,255,255,.6);transition:all .15s}.btn-outline-white:hover{background:#ffffff1a;text-decoration:none}.back-link{margin-top:24px}.back-link a{font-size:14px;color:var(--text-muted);text-decoration:none}.back-link a:hover{color:var(--accent);text-decoration:none}.article-sidebar{position:sticky;top:88px;display:flex;flex-direction:column;gap:20px}.sidebar-card{background:#fff;border-radius:12px;padding:24px;border:1px solid var(--border);box-shadow:0 1px 4px #0f172a0d}.sidebar-heading{font-size:14px;font-weight:800;color:var(--text);margin:0 0 16px;padding-bottom:12px;border-bottom:2px solid var(--accent)}.inline-toc{border:1px solid var(--border);border-radius:12px;overflow:hidden;margin:0 0 36px;background:#fff}.inline-toc-toggle{width:100%;display:flex;align-items:center;gap:10px;padding:14px 20px;background:var(--accent-soft);border:none;cursor:pointer;font-family:inherit;font-size:15px;font-weight:700;color:var(--accent-strong);text-align:left;transition:background .15s}.inline-toc-toggle:hover{background:#bfdbfe}.toc-chevron{margin-left:auto;flex-shrink:0;transition:transform .25s ease;color:var(--accent)}.inline-toc[data-open=false] .toc-chevron{transform:rotate(-90deg)}.inline-toc-body{padding:16px 20px 20px;overflow:hidden;max-height:2000px;transition:max-height .3s ease,padding .3s ease}.inline-toc[data-open=false] .inline-toc-body{max-height:0;padding-top:0;padding-bottom:0}.toc-nav ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:2px}.toc-nav li.toc-h2>a{font-size:14px;color:var(--text);line-height:1.55;display:flex;align-items:baseline;gap:8px;padding:5px 8px;border-radius:6px;transition:all .15s;text-decoration:none}.toc-nav li.toc-h2>a:before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--accent);flex-shrink:0;margin-top:2px}.toc-nav li.toc-h3>a{font-size:13px;color:var(--text-muted);line-height:1.55;display:flex;align-items:baseline;gap:8px;padding:4px 8px 4px 28px;border-radius:6px;transition:all .15s;text-decoration:none}.toc-nav li.toc-h3>a:before{content:"–";color:#94a3b8;flex-shrink:0}.toc-nav a:hover{background:var(--accent-soft);color:var(--accent);text-decoration:none}.toc-nav a.active{background:var(--accent-soft);color:var(--accent);font-weight:700}.author-inner{display:flex;flex-direction:column;gap:12px}.author-avatar{width:48px;height:48px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:800;flex-shrink:0}.author-name{font-size:14px;font-weight:700;color:var(--text);margin:0 0 4px}.author-bio{font-size:12px;color:var(--text-muted);line-height:1.6;margin:0}.site-footer{background:#1e293b;color:#cbd5e1;padding:24px 0;margin-top:0}.footer-inner{max-width:1200px;margin:0 auto;padding:0 24px;text-align:right}@media(max-width:1024px){.article-container{grid-template-columns:1fr}.article-sidebar{position:static}}@media(max-width:768px){.nav-main{display:none}.header-cta .btn-outline{background:#fff;color:var(--accent)!important;border:1px solid var(--accent)}article{padding:24px 20px}.article-title{font-size:22px}.article-content h2{font-size:18px}.article-content h3{font-size:16px}.related-grid{grid-template-columns:1fr}.bottom-cta-inner{padding:28px 20px}.bottom-cta-btns{flex-direction:column}.article-container{padding:20px 16px 60px}.inline-cta{grid-template-columns:1fr;gap:14px;padding:20px;margin:28px 0}.inline-cta-icon{width:40px;height:40px}.inline-cta h3{font-size:15px}.inline-cta-btn{width:100%;justify-content:center}}