.stack-page{--stack-blue: #2563eb;--stack-green: #127a3d;--stack-red: #b42318;--stack-amber: #9a4d00;--stack-line: #d8dee8}.stack-hero{display:grid;grid-template-columns:minmax(0,.92fr) minmax(420px,1.08fr);gap:40px;align-items:center;padding:24px 0 48px;border-bottom:1px solid var(--border)}.stack-kicker,.section-kicker,.metric-label,.node-type,.route-verb,.tool-chip{font-family:var(--mono)}.stack-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--stack-blue);font-size:12px;font-weight:700;margin-bottom:18px}.stack-kicker:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--stack-blue)}.stack-hero h1{max-width:620px;font-size:64px;line-height:1.02;margin:0;color:var(--fg)}.stack-lead{max-width:620px;margin-top:22px;font-size:18px;line-height:1.72;color:var(--fg-dim)}.stack-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}.stack-button{display:inline-flex;align-items:center;min-height:42px;padding:0 16px;border:1px solid var(--fg);border-radius:8px;color:var(--fg);font-size:14px;font-weight:700;text-decoration:none}.stack-button:hover{color:var(--fg);text-decoration:none;background:var(--bg-elev)}.stack-button.primary{border-color:var(--stack-blue);background:var(--stack-blue);color:#fff}.stack-button.primary:hover{color:#fff;background:var(--accent-dim)}.metric-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:34px}.metric{min-height:98px;border:1px solid var(--border);border-radius:8px;padding:14px;background:var(--bg-elev)}.metric strong{display:block;color:var(--fg);font-size:28px;line-height:1}.metric span{display:block;margin-top:6px;color:var(--fg-dim);font-size:12px}.metric-label{margin-top:12px;color:var(--fg-mute);font-size:10px}.system-map{position:relative;min-height:560px;border:1px solid var(--border);border-radius:8px;background:linear-gradient(var(--stack-line) 1px,transparent 1px),linear-gradient(90deg,var(--stack-line) 1px,transparent 1px),var(--bg-elev);background-size:42px 42px;overflow:hidden}.system-map:before{content:"";position:absolute;inset:42px;border:1px dashed #a9b2c0;border-radius:8px;pointer-events:none}.map-title{position:absolute;top:22px;left:22px;color:var(--fg);font-size:13px;font-weight:700}.map-caption{position:absolute;left:22px;bottom:20px;max-width:340px;color:var(--fg-dim);font-size:12px;line-height:1.55}.map-svg{position:absolute;inset:0;width:100%;height:100%}.map-node{position:absolute;width:138px;min-height:74px;border:1px solid var(--border);border-radius:8px;padding:10px 12px;background:#fff;box-shadow:0 14px 28px #1111110f}.map-node.hub{width:162px;min-height:88px;border-color:var(--stack-blue);background:#eef4ff}.map-node .map-icon{display:block;font-size:22px;line-height:1}.map-node strong{display:block;margin-top:7px;color:var(--fg);font-size:14px}.map-node span{display:block;margin-top:2px;color:var(--fg-mute);font-family:var(--mono);font-size:10px}.map-node.mac{left:34px;top:148px}.map-node.raiden{right:34px;top:148px}.map-node.desktop{left:34px;top:326px}.map-node.phone{left:50%;bottom:82px;transform:translate(-50%)}.map-node.hub{left:50%;top:236px;transform:translate(-50%)}.stack-section{padding:54px 0 0}.section-head{display:grid;grid-template-columns:minmax(0,.55fr) minmax(0,1fr);gap:28px;align-items:end;margin-bottom:22px}.section-kicker{color:var(--stack-blue);font-size:12px;font-weight:700}.section-head h2{margin-top:6px;color:var(--fg);font-size:32px;line-height:1.18}.section-head p{color:var(--fg-dim);font-size:15px;line-height:1.7}.layer-grid{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--border);border-radius:8px;overflow:hidden}.layer-card{min-height:208px;padding:20px;background:var(--bg-elev)}.layer-card+.layer-card{border-left:1px solid var(--border)}.layer-card .eyebrow{color:var(--stack-blue);font-family:var(--mono);font-size:11px;font-weight:700}.layer-card h3{margin-top:16px;color:var(--fg);font-size:19px;line-height:1.3}.layer-card p{margin-top:12px;color:var(--fg-dim);font-size:13px;line-height:1.66}.node-roster{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.node-card{border:1px solid var(--border);border-radius:8px;padding:18px;background:var(--bg-elev)}.node-top{display:flex;align-items:flex-start;gap:12px}.node-icon{width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--border);border-radius:8px;background:#fff;font-size:20px;flex:0 0 auto}.node-card h3{color:var(--fg);font-size:18px;line-height:1.25}.node-type{display:inline-block;margin-top:4px;color:var(--stack-blue);font-size:10px;font-weight:700}.node-meta{margin-top:16px;color:var(--fg-mute);font-family:var(--mono);font-size:11px;line-height:1.6;word-break:break-word}.node-role{margin-top:14px;padding-top:14px;border-top:1px solid var(--border-soft);color:var(--fg-dim);font-size:13px;line-height:1.66}.tag-row,.tool-stack{display:flex;flex-wrap:wrap;gap:7px}.tag-row{margin-top:14px}.tag{padding:4px 8px;border:1px solid var(--border);border-radius:6px;background:#fff;color:var(--fg-dim);font-family:var(--mono);font-size:10px}.route-board{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.route-step{position:relative;min-height:188px;border:1px solid var(--border);border-radius:8px;padding:18px;background:var(--bg-elev)}.route-step:after{content:"";position:absolute;top:44px;right:-13px;width:12px;height:1px;background:var(--border)}.route-step:last-child:after{display:none}.route-index{color:var(--stack-blue);font-size:28px;font-weight:800;line-height:1}.route-line{margin-top:16px;color:var(--fg);font-size:15px;font-weight:700;line-height:1.45}.route-verb{display:block;margin:6px 0;color:var(--stack-amber);font-size:11px}.route-step p{margin-top:12px;color:var(--fg-dim);font-size:13px;line-height:1.62}.tool-panel{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:24px;align-items:start;border:1px solid var(--border);border-radius:8px;padding:24px;background:var(--bg-elev)}.tool-panel h2{color:var(--fg);font-size:26px;line-height:1.24}.tool-panel p{margin-top:12px;color:var(--fg-dim);font-size:14px;line-height:1.7}.tool-chip{display:inline-flex;align-items:center;min-height:32px;padding:0 10px;border:1px solid var(--border);border-radius:6px;background:#fff;color:var(--fg);font-size:11px}.stack-back{display:inline-flex;margin-top:36px;color:var(--fg-dim);font-size:14px;text-decoration:none}.stack-back:hover{color:var(--fg)}@media(max-width:960px){.stack-hero,.section-head,.tool-panel{grid-template-columns:1fr}.system-map{min-height:520px}.metric-strip,.layer-grid,.route-board{grid-template-columns:repeat(2,1fr)}.layer-card+.layer-card{border-left:0;border-top:1px solid var(--border)}.layer-card:nth-child(2){border-top:0;border-left:1px solid var(--border)}.node-roster{grid-template-columns:repeat(2,1fr)}.route-step:after{display:none}}@media(max-width:640px){.stack-hero{gap:28px;padding-top:6px}.stack-hero h1{font-size:42px}.stack-lead{font-size:16px}.layer-grid,.node-roster,.route-board{grid-template-columns:1fr}.metric-strip{grid-template-columns:repeat(2,1fr)}.layer-card:nth-child(2){border-left:0;border-top:1px solid var(--border)}.system-map{min-height:600px}.map-node,.map-node.hub{width:132px;min-height:70px}.map-node.mac{left:18px;top:130px}.map-node.raiden{right:18px;top:130px}.map-node.desktop{left:18px;top:318px}.map-node.hub{top:226px}.map-node.phone{bottom:94px}.map-caption{right:18px;max-width:none}}