.concept-a{--ease-out:cubic-bezier(.23,1,.32,1)}
.concept-a .fleet-intro{font-size:16px;line-height:1.7;color:var(--muted);max-width:70ch}
.concept-a .fleet-cover-note{font-size:11px;color:var(--muted);border-top:1px solid var(--line);padding-top:14px}
.concept-a .fleet-facts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:28px 0 0;padding:24px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.concept-a .fleet-facts dt{font-size:40px;line-height:1;color:var(--accent-text);letter-spacing:-.04em;margin-bottom:12px}
.concept-a .fleet-facts dd{font-size:13px;color:var(--muted);margin:0}
.concept-a .fleet-flow{margin:24px 0;border:1px solid var(--line);border-radius:6px;padding:24px;background:var(--surface);min-width:0;container-type:inline-size}
.concept-a .fleet-flow-header{display:flex;align-items:flex-start;justify-content:space-between;gap:18px}
.concept-a .fleet-eyebrow{font-size:11px;color:var(--muted);margin:0 0 10px}
.concept-a .fleet-flow h3{font-size:23px;line-height:1.25;margin:0}
.concept-a .fleet-flow-counter{flex-shrink:0;font-size:12px;line-height:1.6;font-variant-numeric:tabular-nums;color:var(--accent-text);padding-top:3px}
.concept-a .fleet-flow-hint{font-size:13px;line-height:1.6;color:var(--muted);margin:18px 0}
.concept-a .fleet-flow-steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px}
.concept-a .fleet-flow-steps li{min-width:0}
.concept-a .fleet-flow-steps button{display:flex;flex-direction:column;gap:14px;align-items:flex-start;text-align:left;width:100%;height:100%;min-height:95px;padding:12px 9px;background:var(--paper,var(--bg));border:1px solid var(--line);border-radius:5px;color:var(--text);font:inherit;font-size:12px;line-height:1.4;overflow-wrap:anywhere}
.concept-a .fleet-flow-steps button>span{font-size:11px;color:var(--muted);font-variant-numeric:tabular-nums}
.concept-a .fleet-flow-steps button[aria-pressed=true]{border-color:var(--accent-text);box-shadow:inset 0 2px var(--accent-text)}
.concept-a .fleet-flow-steps button[aria-pressed=true]>span{color:var(--accent-text)}
.concept-a .fleet-flow-steps button[data-visited=true]{border-color:var(--control-border,var(--line))}
.concept-a .fleet-progress{height:2px;background:var(--line);margin:20px 0 24px;overflow:hidden}
.concept-a .fleet-progress span{display:block;width:100%;height:100%;background:var(--accent-text);transform-origin:left;transition:transform 180ms var(--ease-out)}
.concept-a .fleet-data-chain{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;margin:0}
.concept-a .fleet-data-chain>div{position:relative;min-width:0}
.concept-a .fleet-data-chain>div:not(:last-child)::after{content:'→';position:absolute;right:-17px;top:0;color:var(--accent-text)}
.concept-a .fleet-data-chain dt{font-size:11px;color:var(--muted);margin-bottom:10px}
.concept-a .fleet-data-chain dd{font-size:15px;line-height:1.65;margin:0;overflow-wrap:anywhere}
.concept-a .fleet-flow-detail{min-height:225px}
.concept-a .fleet-rule{border-top:1px solid var(--line);margin:24px 0 0;padding-top:16px;display:grid;grid-template-columns:1fr 2fr;gap:20px;font-size:13px;line-height:1.65}
.concept-a .fleet-rule strong{font-weight:500;color:var(--accent-text)}
.concept-a .fleet-rule span{color:var(--text)}
.concept-a .fleet-flow-actions{display:flex;align-items:center;gap:20px;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:18px;margin-top:12px}
.concept-a .fleet-flow-actions p{font-size:11px;color:var(--muted);margin:0;flex:1;min-width:140px}
.concept-a .fleet-work-list{list-style:none;padding:0;margin:0}
.concept-a .fleet-work-list li{padding:18px 0 18px 18px;border-top:1px solid var(--line);position:relative;font-size:16px;line-height:1.7}
.concept-a .fleet-work-list li::before{content:'';position:absolute;top:29px;left:0;width:4px;height:4px;background:var(--accent-text)}
.concept-a .fleet-tech-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 24px;margin-top:24px}
.concept-a .fleet-tech-grid article{border-top:1px solid var(--line);padding:20px 0;min-width:0}
.concept-a .fleet-tech-grid h3{font-size:18px;line-height:1.35;margin:0 0 10px}
.concept-a .fleet-tech-grid p{font-size:14px;line-height:1.7;color:var(--muted);margin:0}
@container(max-width:500px){.concept-a .fleet-flow-steps{grid-template-columns:repeat(2,minmax(0,1fr))}.concept-a .fleet-flow-steps button{min-height:70px;gap:8px}.concept-a .fleet-data-chain{grid-template-columns:1fr;gap:18px}.concept-a .fleet-data-chain>div:not(:last-child)::after{display:none}.concept-a .fleet-rule{grid-template-columns:1fr;gap:8px}.concept-a .fleet-flow-detail{min-height:0}}
@media(max-width:767px){.concept-a .fleet-flow{padding:18px}.concept-a .fleet-flow h3{font-size:20px}.concept-a .fleet-facts{gap:10px}.concept-a .fleet-facts dt{font-size:32px}.concept-a .fleet-facts dd{font-size:11px}.concept-a .fleet-tech-grid{grid-template-columns:1fr}.concept-a .fleet-flow-header{gap:10px}}
@media(prefers-reduced-motion:reduce){.concept-a .fleet-progress span{transition:none}}