:root{--bg:#fff;--bg-soft:#fafafc;--text:#111827;--muted:#6b7280;--line:rgba(17,24,39,.1);--accent:#d81b60;--accent-soft:#fce4ec;--max:1180px}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--text)}body{font-family:Avenir Next,Noto Sans JP,Hiragino Sans,sans-serif;letter-spacing:.01em}.scanline{position:fixed;top:0;left:0;width:100%;height:2px;z-index:60;background:linear-gradient(90deg,var(--accent) 0,var(--accent) var(--progress,0),transparent var(--progress,0))}.container{width:min(var(--max),calc(100% - 84px));margin:0 auto}header{position:-webkit-sticky;position:sticky;top:0;z-index:20;background:hsla(0,0%,100%,.62);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}.header-inner{height:68px;display:flex;align-items:center;justify-content:space-between}.brand{font-size:12px;letter-spacing:.09em;text-transform:uppercase;color:var(--muted)}.header-inner nav{display:flex;gap:18px}.header-inner a{text-decoration:none;color:var(--muted);font-size:12px}.header-inner a:hover{color:var(--text)}main section{padding:116px 0}h1,h2,h3,p{margin:0}.hero{min-height:calc(100vh - 68px);display:grid;align-items:center;padding:90px 0 110px}.hero-grid{display:grid;grid-template-columns:1fr;grid-gap:40px;gap:40px;align-items:flex-end}h1{font-size:clamp(38px,6.3vw,78px);line-height:1.14;font-weight:550;max-width:10.8em}.hero-copy{margin-top:24px;color:var(--muted);font-size:15px;line-height:1.9;max-width:38em}.concept-box{border:1px solid var(--line);border-radius:22px;background:rgba(250,250,252,.6);padding:24px}.concept-box p{font-size:14px;line-height:1.9;color:var(--muted)}.section-head{margin-bottom:32px;display:flex;justify-content:space-between;align-items:flex-end;gap:24px}.section-head h2{font-size:clamp(26px,4vw,40px);line-height:1.2}.section-head p{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}.reading-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:12px;gap:12px}.reading-item{border:1px solid var(--line);border-radius:16px;padding:14px}.reading-item strong{display:block;font-size:12px;text-transform:uppercase;letter-spacing:.07em;color:var(--muted)}.reading-item span{margin-top:6px;display:block;font-size:14px;line-height:1.8}.filters{display:flex;flex-wrap:wrap;gap:8px}.filter{border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--muted);padding:9px 14px;font-size:12px;letter-spacing:.03em;cursor:pointer;transition:.18s ease}.filter.active,.filter:hover{border-color:rgba(216,27,96,.3);background:var(--accent-soft);color:#8a1040}.cases{margin-top:20px;border-top:1px solid var(--line)}.cases-grid{margin-top:20px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:14px;gap:14px}.case.case-card{display:block;padding:0;border-bottom:0;grid-template-columns:none;gap:0}.case-card{border:1px solid var(--line);border-radius:18px;overflow:hidden;background:#fff}.case-media{aspect-ratio:16/9;background:var(--bg-soft)}.case-media img{width:100%;height:100%;object-fit:cover;display:block}.case-body{padding:16px}.case-body .case-meta{margin-bottom:8px}.case-body h3{margin-top:2px}.case-points{margin-top:12px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:10px;gap:10px}.case-point{border:1px solid var(--line);border-radius:14px;padding:12px}.case-point p{margin-top:7px;font-size:13px;line-height:1.8}.case{display:grid;grid-template-columns:210px 1fr;grid-gap:22px;gap:22px;padding:32px 0;border-bottom:1px solid var(--line)}.case-meta{font-size:12px;color:var(--muted);line-height:1.8}.case h3{font-size:clamp(21px,3vw,28px);line-height:1.36}.summary{margin-top:8px;color:var(--muted);font-size:14px}.case-grid{margin-top:14px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:10px;gap:10px}.case-cell{border:1px solid var(--line);border-radius:14px;padding:13px}.label{display:block;font-size:11px;letter-spacing:.07em;text-transform:uppercase;color:var(--muted)}.case-cell p{margin-top:7px;font-size:13px;line-height:1.8}.diagram{background:var(--bg-soft)}.diagram-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:12px;gap:12px}.diagram-card{border-radius:20px;padding:22px;background:hsla(0,0%,100%,.62);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border:1px solid hsla(0,0%,100%,.55);box-shadow:0 10px 30px rgba(17,24,39,.08)}.diagram-card h3{font-size:18px}.diagram-card p{margin-top:8px;font-size:14px;line-height:1.8;color:var(--muted)}.notes{border-top:1px solid var(--line);padding-top:18px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:12px;gap:12px}.note{border:1px solid var(--line);border-radius:14px;padding:14px}.note span,.note strong{display:block;font-size:13px}.note span{margin-top:6px;line-height:1.8;color:var(--muted)}footer{border-top:1px solid var(--line);padding:52px 0 64px}.footer-inner{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:14px}.footer-inner small{font-size:12px;color:var(--muted)}.footer-links{display:flex;gap:16px}.footer-links a{font-size:13px;text-decoration:none;color:var(--muted)}.reveal{opacity:0;transform:translateY(14px);transition:opacity .65s ease,transform .65s ease}.reveal.show{opacity:1;transform:translateY(0)}@media (max-width:980px){.container{width:min(var(--max),calc(100% - 40px))}main section{padding:86px 0}.hero{min-height:auto;padding:74px 0 82px}.case,.case-grid,.case-points,.cases-grid,.diagram-grid,.hero-grid,.notes,.reading-grid{grid-template-columns:1fr}.section-head{flex-direction:column;align-items:start}}.card-link{display:block;text-decoration:none;color:inherit}.card-link .case-card{transition:border-color .18s ease,transform .18s ease}.card-link:hover .case-card{transform:translateY(-2px);border-color:rgba(216,27,96,.22)}.case-link-text{margin-top:14px;font-size:12px;color:var(--muted)}.detail-main section{padding:108px 0}.detail-hero{min-height:calc(78vh - 68px);display:grid;align-items:center;border-bottom:1px solid var(--line)}.detail-meta{font-size:12px;color:var(--muted);letter-spacing:.06em;text-transform:uppercase}.detail-stack{display:grid;grid-gap:24px;gap:24px}.triple-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:12px;gap:12px}.block-card{border:1px solid var(--line);border-radius:16px;padding:16px;background:#fff}.block-card strong{display:block;font-size:14px;font-weight:600}.block-card p{margin-top:7px;font-size:14px;line-height:1.85;color:var(--text)}.diagram-boxes{border:1px solid var(--line);border-radius:18px;padding:18px;background:#fff;display:grid;grid-template-columns:1fr auto 1fr;grid-gap:12px;gap:12px;align-items:start}.diagram-col{display:grid;grid-gap:8px;gap:8px}.diagram-title{font-size:11px;letter-spacing:.07em;color:var(--muted);text-transform:uppercase}.diagram-flow{display:grid;grid-gap:8px;gap:8px}.node{border:1px solid var(--line);border-radius:10px;padding:8px 10px;font-size:13px;background:var(--bg-soft)}.diagram-arrow{font-size:24px;color:var(--muted);align-self:center;padding:0 6px}.diagram-note{grid-column:1/-1;margin:2px 0 0;color:var(--muted);font-size:13px}.sample-card{border:1px solid var(--line);border-radius:16px;padding:18px;background:#fff}.sample-card p{margin:0;font-size:14px;line-height:1.85}.sample-card p+p{margin-top:8px}@media (max-width:980px){.detail-main section{padding:82px 0}.detail-hero{min-height:auto;padding-top:56px}.diagram-boxes,.triple-grid{grid-template-columns:1fr}.diagram-arrow{justify-self:center;transform:rotate(90deg)}}