.art-head{padding:180px 0 48px;position:relative;background:linear-gradient(180deg,var(--bg-elev) 0%,#fff 100%)}.art-head .container{position:relative;z-index:1}.art-head-inner{max-width:820px;margin:0 auto;text-align:center}.art-head h1{font-size:clamp(1.9rem,4.6vw,3rem);line-height:1.15;letter-spacing:-0.02em;margin:0 0 20px}.art-head .art-standfirst{font-size:1.125rem;line-height:1.6;color:var(--text-soft);max-width:680px;margin:0 auto 28px}.art-byline{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:10px 14px;font-family:'Geist Mono',monospace;font-size:0.75rem;color:var(--text-mute);text-transform:lowercase;letter-spacing:0}.art-byline strong{color:var(--text);font-weight:500}.art-byline .art-dot{width:3px;height:3px;border-radius:50%;background:var(--gray-300);display:inline-block}.art-byline img{width:36px;height:36px;border-radius:50%;object-fit:cover;background:#fff;border:1px solid var(--border-strong)}.art-byline-person{display:inline-flex;align-items:center;gap:9px}.art-head .breadcrumb{justify-content:center;margin-top:26px}.art-cover{margin:0;max-width:1120px;margin-inline:auto;padding:0 24px}.art-cover-frame{border-radius:var(--radius-xl);overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow-lg);aspect-ratio:16/8;background:var(--gray-100)}.art-cover-frame img{width:100%;height:100%;object-fit:cover;display:block}.art-cover figcaption{font-family:'Geist Mono',monospace;font-size:0.6875rem;color:var(--text-mute);text-align:center;margin-top:12px;text-transform:lowercase}.art-wrap{padding:64px 0 88px;background:#fff}.art-layout{display:grid;grid-template-columns:260px 1fr;gap:72px;align-items:start;max-width:1120px;margin:0 auto}.art-aside{position:sticky;top:128px;align-self:start;display:flex;flex-direction:column;gap:24px}.art-toc-title{font-family:'Geist Mono',monospace;font-size:0.6875rem;font-weight:500;color:var(--text-mute);text-transform:lowercase;letter-spacing:0.1em;margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid var(--border)}.art-toc ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:2px}.art-toc a{display:block;padding:7px 10px;border-radius:8px;font-size:0.8125rem;line-height:1.4;color:var(--text-soft);text-decoration:none;border-left:2px solid transparent;transition:var(--transition)}.art-toc a:hover{color:var(--text);background:var(--bg-elev);border-left-color:var(--green)}.art-aside-cta{padding:22px;border-radius:var(--radius-lg);background:var(--bg-elev);border:1px solid var(--border)}.art-aside-cta strong{display:block;font-size:0.9375rem;line-height:1.35;margin-bottom:8px}.art-aside-cta p{font-size:0.8125rem;color:var(--text-soft);line-height:1.55;margin:0 0 16px}.art-aside-cta .btn{width:100%;justify-content:center;font-size:0.8125rem}.art-body{max-width:740px;font-size:1.0625rem;line-height:1.78;color:var(--text-soft)}.art-body>p{margin:0 0 20px}.art-body strong{color:var(--text);font-weight:600}.art-body em{font-style:italic}.art-body h2{font-size:clamp(1.35rem,2.6vw,1.75rem);line-height:1.25;letter-spacing:-0.015em;color:var(--text);margin:52px 0 18px;scroll-margin-top:124px}.art-body h2:first-child{margin-top:0}.art-body h3{font-size:1.125rem;line-height:1.35;color:var(--text);margin:34px 0 12px;scroll-margin-top:124px}.art-body ul,.art-body ol{margin:0 0 22px;padding-left:24px}.art-body li{margin-bottom:9px}.art-body li::marker{color:var(--green-dark)}.art-body a{color:var(--text);text-decoration:underline;text-decoration-color:rgba(0,200,150,0.55);text-decoration-thickness:1.5px;text-underline-offset:3px;transition:var(--transition)}.art-body a:hover{color:var(--green-dark);text-decoration-color:var(--green)}.art-body hr{border:0;border-top:1px solid var(--border);margin:44px 0}.art-body a.btn{text-decoration:none}.art-body a.btn-primary,.art-body a.btn-primary:hover{color:#fff}.art-body a.btn-light,.art-body a.btn-outline{color:var(--text)}.art-ask{margin:26px 0;padding:18px 22px;border-left:3px solid var(--blue);background:var(--blue-soft);border-radius:0 var(--radius) var(--radius) 0;font-size:1.0625rem;color:var(--text);font-style:italic}.art-ask p{margin:0 0 8px}.art-ask p:last-child{margin:0}.art-note{margin:28px 0;padding:20px 24px;border-left:3px solid var(--green);background:rgba(0,200,150,0.05);border-radius:0 var(--radius) var(--radius) 0;font-size:0.9875rem}.art-note p{margin:0 0 10px}.art-note p:last-child{margin:0}.art-note strong{color:var(--green-dark)}.art-recap{margin:40px 0;border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;background:#fff;box-shadow:var(--shadow-sm)}.art-recap-head{padding:16px 24px;background:var(--bg-elev);border-bottom:1px solid var(--border);font-family:'Geist Mono',monospace;font-size:0.6875rem;text-transform:lowercase;letter-spacing:0.1em;color:var(--text-mute)}.art-recap dl{margin:0;padding:8px 24px 20px;display:grid;grid-template-columns:1fr}.art-recap dt{margin-top:16px;font-weight:600;color:var(--text);font-size:0.9375rem}.art-recap dd{margin:4px 0 0;font-size:0.9375rem;line-height:1.65;color:var(--text-soft)}.art-manifesto{margin:48px 0 8px;padding:34px 28px;text-align:center;border-radius:var(--radius-lg);background:var(--gradient-green-blue);color:#fff}.art-manifesto p{margin:0;font-size:1.0625rem;font-weight:600;line-height:1.45;letter-spacing:0.01em;text-transform:uppercase;color:#fff}.art-cta{margin:44px 0 0;padding:32px;border-radius:var(--radius-lg);border:1px solid var(--border);background:var(--bg-elev);text-align:center}.art-cta h2{margin:0 0 10px;font-size:1.375rem}.art-cta p{margin:0 0 22px;font-size:1rem;color:var(--text-soft)}.art-faq{margin:56px 0 0;scroll-margin-top:124px}.art-faq h2{margin-bottom:8px}.art-faq .faq-list{margin:0;max-width:none}.art-faq .faq-item summary{cursor:pointer;list-style:none;display:flex;align-items:flex-start;justify-content:space-between;gap:16px;padding:20px 0;font-size:1rem;font-weight:600;color:var(--text)}.art-faq .faq-item summary::-webkit-details-marker{display:none}.art-faq .faq-item summary::after{content:'+';flex:0 0 auto;width:22px;height:22px;border-radius:50%;border:1px solid var(--border-strong);display:inline-flex;align-items:center;justify-content:center;font-size:0.9rem;font-weight:400;color:var(--text-mute);transition:var(--transition)}.art-faq .faq-item[open] summary::after{content:'–';background:var(--text);border-color:var(--text);color:#fff}.art-faq .faq-item p{padding-bottom:22px;margin:0;color:var(--text-soft);font-size:0.9875rem;line-height:1.7}.art-author{margin:56px 0 0;padding:26px;display:flex;gap:20px;align-items:flex-start;border:1px solid var(--border);border-radius:var(--radius-lg);background:#fff}.art-author img{width:88px;height:88px;border-radius:50%;object-fit:cover;flex:0 0 auto;background:#fff;border:1px solid var(--border-strong);box-shadow:var(--shadow-sm)}.art-author-body strong{display:block;font-size:1rem;color:var(--text)}.art-author-body span{display:block;font-family:'Geist Mono',monospace;font-size:0.6875rem;color:var(--text-mute);text-transform:lowercase;margin:3px 0 10px}.art-author-body p{margin:0;font-size:0.9rem;line-height:1.65;color:var(--text-soft)}.art-serie{background:var(--bg-elev);border-top:1px solid var(--border);padding:72px 0}.art-serie-head{text-align:center;max-width:620px;margin:0 auto 40px}.art-serie-head h2{font-size:clamp(1.5rem,3vw,2rem);margin-bottom:12px}.art-serie-head p{color:var(--text-soft);font-size:1rem;margin:0}.art-serie-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.art-serie-card{display:flex;flex-direction:column;gap:10px;padding:24px;background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);text-decoration:none;transition:var(--transition)}.art-serie-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--border-strong)}.art-serie-card .art-serie-num{font-family:'Geist Mono',monospace;font-size:0.6875rem;color:var(--green-dark);text-transform:lowercase;letter-spacing:0.05em}.art-serie-card strong{font-size:1rem;line-height:1.35;color:var(--text)}.art-serie-card span{font-size:0.875rem;line-height:1.55;color:var(--text-soft)}.art-serie-card em{font-style:normal;font-size:0.8125rem;font-weight:500;color:var(--green-dark);margin-top:auto;padding-top:8px}@media (max-width:1024px){.art-layout{grid-template-columns:1fr;gap:40px}.art-aside{position:static;max-height:none}.art-toc{padding:22px;background:var(--bg-elev);border-radius:var(--radius-lg);border:1px solid var(--border)}.art-toc-title{margin-bottom:10px}.art-serie-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width:768px){.art-head{padding:130px 0 36px}.art-cover{padding:0 16px}.art-cover-frame{aspect-ratio:16/10;border-radius:var(--radius-lg)}.art-wrap{padding:44px 0 64px}.art-body{font-size:1rem;line-height:1.72}.art-serie-grid{grid-template-columns:1fr}.art-author{flex-direction:column;gap:14px}.art-manifesto{padding:26px 20px}.art-manifesto p{font-size:0.9375rem}}