:root{--color-brand: #f97316;--color-primary: #2563eb;--color-primary-dark: #1e40af;--color-text: #0f172a;--color-body: #1e293b;--color-muted: #64748b;--color-border: #e2e8f0;--color-bg: #ffffff;--color-bg-alt: #f8fafc;--color-bg-soft: #f1f5f9}*{box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:Noto Sans JP,-apple-system,BlinkMacSystemFont,Hiragino Sans,Yu Gothic UI,Yu Gothic,sans-serif;margin:0;background:var(--color-bg-alt);color:var(--color-body);line-height:1.85;font-size:16px;-webkit-font-smoothing:antialiased}.reading-progress{position:fixed;top:0;left:0;height:3px;background:linear-gradient(90deg,var(--accent),var(--color-brand));z-index:100;transition:width .1s ease-out;width:0}.topnav{background:var(--color-bg);border-bottom:1px solid var(--color-border);padding:.85rem 1.25rem;position:sticky;top:0;z-index:50;backdrop-filter:blur(8px);background:#ffffffeb}.topnav-inner{max-width:880px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;gap:1rem}.home-link{color:var(--color-primary);text-decoration:none;font-size:.88rem;font-weight:500;display:inline-flex;align-items:center;gap:.25rem}.home-link:hover{text-decoration:underline}.brand{font-weight:700;color:var(--color-text);font-size:.95rem;text-decoration:none}.container{max-width:760px;margin:0 auto;padding:0 1.25rem}.wide-shell{max-width:1100px;margin:0 auto;padding:0 1.25rem;display:grid;grid-template-columns:minmax(0,1fr);gap:2.5rem}@media(min-width:1100px){.wide-shell{grid-template-columns:minmax(0,1fr) 240px}}.toc-sidebar{display:none}@media(min-width:1100px){.toc-sidebar{display:block;position:sticky;top:5rem;align-self:start;max-height:calc(100vh - 6rem);overflow-y:auto;padding-right:.5rem}}.toc-title{font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--color-muted);margin:0 0 .85rem;padding-left:.6rem;border-left:3px solid var(--accent)}.toc-list{list-style:none;padding:0;margin:0}.toc-list li{margin:0}.toc-list a{display:block;padding:.45rem .6rem;font-size:.83rem;line-height:1.5;color:var(--color-muted);text-decoration:none;border-left:2px solid transparent;transition:color .12s,border-color .12s,background .12s;border-radius:0 .25rem .25rem 0}.toc-list a:hover{color:var(--color-text);background:var(--color-bg-soft)}.toc-list a.active{color:var(--accent);border-left-color:var(--accent);font-weight:600;background:color-mix(in srgb,var(--accent) 6%,transparent)}.article-header{padding:2.5rem 0 1.5rem}.category-pill{display:inline-flex;align-items:center;gap:.4rem;background:color-mix(in srgb,var(--accent) 12%,transparent);color:var(--accent);padding:.3rem .85rem;border-radius:9999px;font-size:.78rem;font-weight:600;text-decoration:none;margin-bottom:1rem}.category-pill:before{content:"";width:6px;height:6px;background:var(--accent);border-radius:50%}h1.article-title{font-size:clamp(1.55rem,4vw,2.1rem);line-height:1.4;margin:0 0 1rem;color:var(--color-text);font-weight:700;letter-spacing:-.01em}.meta{color:var(--color-muted);font-size:.85rem;display:flex;flex-wrap:wrap;gap:1rem 1.25rem;align-items:center}.meta-item{display:inline-flex;align-items:center;gap:.3rem}.meta-item svg{width:14px;height:14px}.tags{margin:1.25rem 0 0;display:flex;flex-wrap:wrap;gap:.35rem}.tag{background:var(--color-bg-soft);padding:.25rem .65rem;border-radius:.4rem;font-size:.74rem;color:var(--color-muted);text-decoration:none}article.content{background:var(--color-bg);border-radius:1rem;padding:2rem clamp(1.1rem,4vw,2.5rem);margin:0 0 2rem;box-shadow:0 1px 3px #0f172a0d}article.content>:first-child{margin-top:0}article.content h2{font-size:1.4rem;margin:2.75rem 0 1rem;padding:.4rem 0 .4rem .95rem;border-left:4px solid var(--accent);line-height:1.45;color:var(--color-text)}article.content h3{font-size:1.12rem;margin:2rem 0 .75rem;color:var(--color-text);font-weight:700;position:relative;padding-left:1rem}article.content h3:before{content:"";position:absolute;left:0;top:.55em;width:8px;height:8px;background:var(--accent);border-radius:50%}article.content p{margin:1.1rem 0;color:var(--color-body)}article.content a{color:var(--color-primary);text-decoration:none;border-bottom:1px solid color-mix(in srgb,var(--color-primary) 30%,transparent);transition:border-color .15s}article.content a:hover{border-bottom-color:var(--color-primary)}article.content ul,article.content ol{padding-left:1.5rem;margin:1rem 0}article.content li{margin:.45rem 0}article.content blockquote{border-left:4px solid var(--color-brand);background:#fff7ed;padding:1rem 1.25rem;margin:1.75rem 0;border-radius:0 .5rem .5rem 0;color:#7c2d12}article.content blockquote p{margin:.35rem 0}article.content table{border-collapse:collapse;width:100%;margin:1.5rem 0;font-size:.93rem;background:var(--color-bg);border-radius:.5rem;overflow:hidden;box-shadow:0 0 0 1px var(--color-border)}article.content thead{background:var(--color-bg-soft)}article.content th{padding:.7rem .9rem;text-align:left;font-weight:700;color:var(--color-text);border-bottom:2px solid var(--color-border)}article.content td{padding:.6rem .9rem;border-bottom:1px solid var(--color-border)}article.content tbody tr:last-child td{border-bottom:0}article.content tbody tr:nth-child(2n){background:var(--color-bg-alt)}article.content hr{border:0;height:1px;background:linear-gradient(90deg,transparent,var(--color-border),transparent);margin:2.5rem 0}article.content code{background:var(--color-bg-soft);padding:.12rem .4rem;border-radius:.25rem;font-size:.9em;color:#be123c;font-family:SFMono-Regular,Menlo,Consolas,monospace}article.content pre{background:#0f172a;color:#e2e8f0;padding:1rem 1.2rem;border-radius:.6rem;overflow-x:auto;font-size:.88rem;margin:1.5rem 0}article.content pre code{background:transparent;color:inherit;padding:0}article.content img{max-width:100%;height:auto;border-radius:.5rem;margin:1.5rem auto;display:block;box-shadow:0 4px 14px #0f172a14}.cta-banner{background:linear-gradient(135deg,#f97316,#ea580c);color:#fff;border-radius:1rem;padding:1.75rem 1.5rem;margin:2rem 0;text-align:center;position:relative;overflow:hidden}.cta-banner:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 80% 20%,rgba(255,255,255,.18),transparent 50%);pointer-events:none}.cta-eyebrow{font-size:.78rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase;opacity:.9;margin-bottom:.5rem}.cta-banner h3{margin:0 0 .6rem;font-size:1.25rem;line-height:1.5;color:#fff}.cta-banner p{margin:0 0 1.2rem;font-size:.92rem;opacity:.95;max-width:540px;margin-left:auto;margin-right:auto}.cta-btn{display:inline-block;background:#fff;color:#ea580c;padding:.7rem 1.6rem;border-radius:9999px;font-weight:700;text-decoration:none;font-size:.95rem;transition:transform .12s,box-shadow .12s}.cta-btn:hover{transform:translateY(-1px);box-shadow:0 6px 16px #00000026}.related{margin:2.5rem 0 2rem}.related h2{font-size:1.15rem;margin:0 0 1rem;color:var(--color-text);font-weight:700;display:flex;align-items:center;gap:.5rem}.related h2:before{content:"";width:4px;height:1.05em;background:var(--accent);border-radius:2px}.related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:.85rem}.related-card{background:var(--color-bg);border:1px solid var(--color-border);border-radius:.7rem;padding:.95rem 1rem;text-decoration:none;color:inherit;transition:border-color .12s,transform .12s,box-shadow .12s;display:flex;flex-direction:column;gap:.4rem}.related-card:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:0 6px 16px #0f172a12}.related-title{font-size:.92rem;line-height:1.5;color:var(--color-text);font-weight:600;margin:0;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.related-date{font-size:.75rem;color:var(--color-muted);margin-top:auto}.footer-back{text-align:center;margin:2rem 0 4rem}.footer-back a{display:inline-flex;align-items:center;gap:.3rem;color:var(--color-primary);text-decoration:none;font-size:.9rem;font-weight:500;padding:.6rem 1.1rem;background:var(--color-bg);border:1px solid var(--color-border);border-radius:9999px;transition:border-color .12s}.footer-back a:hover{border-color:var(--color-primary)}.scroll-top{position:fixed;bottom:1.5rem;right:1.5rem;width:44px;height:44px;border-radius:50%;background:var(--color-primary);color:#fff;display:none;align-items:center;justify-content:center;cursor:pointer;border:0;box-shadow:0 4px 14px #2563eb66;font-size:1.2rem;z-index:40;transition:transform .15s}.scroll-top:hover{transform:translateY(-2px)}.scroll-top.visible{display:flex}.industry-lure{margin:2rem 0 0;padding:1.5rem;border:1px solid;border-radius:1rem;position:relative}.industry-lure-head{display:inline-flex;align-items:center;gap:.4rem;font-size:.78rem;font-weight:700;margin-bottom:.6rem}.industry-lure h3{margin:0 0 .5rem;font-size:1.15rem;line-height:1.45}.industry-lure p{margin:0 0 1rem;color:var(--color-body);font-size:.92rem;line-height:1.6}.industry-lure-btn{display:inline-block;color:#fff;padding:.6rem 1.3rem;border-radius:9999px;font-weight:700;text-decoration:none;font-size:.9rem;transition:transform .12s,box-shadow .12s}.industry-lure-btn:hover{transform:translateY(-1px);box-shadow:0 6px 14px #0000001f}article.content .midarticle-cta{margin:2.25rem 0;padding:1.1rem 1.2rem;background:linear-gradient(135deg,#fff7ed,#fef3c7);border:1px solid #fed7aa;border-radius:.8rem;display:grid;grid-template-columns:auto 1fr auto;gap:.9rem 1rem;align-items:center}article.content .midarticle-cta-icon{width:2.2rem;height:2.2rem;border-radius:.6rem;background:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:1.1rem;box-shadow:0 1px 3px #0000000f}article.content .midarticle-cta-body strong{display:block;color:#7c2d12;font-size:.95rem;line-height:1.5;margin-bottom:.2rem}article.content .midarticle-cta-body p{margin:0;font-size:.82rem;color:#92400e;line-height:1.6}article.content .midarticle-cta-btn{display:inline-block;background:linear-gradient(135deg,#f97316,#ea580c);color:#fff!important;padding:.55rem 1.1rem;border-radius:9999px;font-weight:700;text-decoration:none!important;font-size:.85rem;border-bottom:0!important;white-space:nowrap;transition:transform .12s}article.content .midarticle-cta-btn:hover{transform:translateY(-1px)}@media(max-width:640px){article.content .midarticle-cta{grid-template-columns:auto 1fr;grid-template-rows:auto auto}article.content .midarticle-cta-btn{grid-column:1 / -1;justify-self:stretch;text-align:center}}.sticky-cta{position:fixed;left:0;right:0;bottom:0;z-index:60;transform:translateY(100%);transition:transform .35s cubic-bezier(.4,0,.2,1);pointer-events:none}.sticky-cta.show{transform:translateY(0);pointer-events:auto}.sticky-cta-inner{max-width:720px;margin:0 auto .75rem;background:linear-gradient(135deg,#f97316,#ea580c);color:#fff;border-radius:1rem 1rem 0 0;padding:.85rem 1rem;display:flex;align-items:center;gap:.8rem;box-shadow:0 -8px 24px #0f172a2e}.sticky-cta-icon{font-size:1.4rem;flex:none}.sticky-cta-text{flex:1;min-width:0;line-height:1.35}.sticky-cta-text strong{display:block;font-size:.95rem;font-weight:700}.sticky-cta-sub{font-size:.75rem;opacity:.85}.sticky-cta-btn{flex:none;background:#fff;color:#ea580c;font-weight:700;font-size:.88rem;padding:.55rem 1.1rem;border-radius:9999px;text-decoration:none;white-space:nowrap;transition:transform .12s,box-shadow .12s}.sticky-cta-btn:hover{transform:translateY(-1px);box-shadow:0 4px 10px #00000026}.sticky-cta-close{flex:none;background:#ffffff2e;color:#fff;border:0;width:1.8rem;height:1.8rem;border-radius:50%;cursor:pointer;font-size:1.05rem;line-height:1;padding:0;transition:background .12s}.sticky-cta-close:hover{background:#ffffff47}@media(max-width:480px){.sticky-cta-inner{margin:0;border-radius:0;padding:.7rem .85rem}.sticky-cta-text strong{font-size:.88rem}.sticky-cta-sub{display:none}}.reading-teaser{position:fixed;right:1.2rem;bottom:5.5rem;z-index:55;max-width:320px;transform:translate(120%) translateY(0);transition:transform .4s cubic-bezier(.4,0,.2,1);pointer-events:none}.reading-teaser.show{transform:translate(0);pointer-events:auto}.reading-teaser-inner{background:#fff;border:1px solid var(--color-border);border-left:4px solid #10b981;border-radius:.7rem;padding:.9rem 1rem .9rem .95rem;box-shadow:0 12px 28px #0f172a2e;position:relative}.reading-teaser-eyebrow{display:block;font-size:.72rem;font-weight:700;color:#047857;margin-bottom:.3rem}.reading-teaser-inner p{margin:0 0 .7rem;font-size:.85rem;color:var(--color-body);line-height:1.5}.reading-teaser-btn{display:inline-block;background:#10b981;color:#fff;font-weight:700;font-size:.82rem;padding:.45rem 1rem;border-radius:9999px;text-decoration:none;transition:background .12s}.reading-teaser-btn:hover{background:#059669}.reading-teaser-close{position:absolute;top:.4rem;right:.4rem;background:transparent;color:var(--color-muted);border:0;width:1.5rem;height:1.5rem;border-radius:50%;cursor:pointer;font-size:1rem;line-height:1}.reading-teaser-close:hover{background:var(--color-bg-soft)}@media(max-width:640px){.reading-teaser{right:.6rem;left:.6rem;bottom:4.5rem;max-width:none}}@media(max-width:640px){article.content{padding:1.25rem;border-radius:.75rem}.article-header{padding:1.5rem 0 1rem}h1.article-title{font-size:1.4rem}}