.project-tabs{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-bottom:20px}
#projects{scroll-margin-top:110px}
.project-tabs button{min-width:0;padding:14px 15px;text-align:left;border:1px solid var(--line);border-radius:12px;background:var(--surface);color:var(--muted)}
.project-tabs button>span{display:block;font-size:10px;letter-spacing:1px;color:var(--faint);margin-bottom:6px}
.project-tabs strong{display:block;font-size:14px;line-height:1.5;font-weight:600;overflow-wrap:anywhere}
.project-tabs small{display:block;font-size:11px;margin-top:5px;line-height:1.6}
.project-tabs button[aria-pressed=true]{border-color:var(--accent);background:var(--surface2);color:var(--ink)}
.project-tabs button[aria-pressed=true]>span{color:var(--accent)}
.project-detail{padding:26px 30px;scroll-margin-top:96px;outline:none}
.project-intro{display:flex;gap:24px;justify-content:space-between;align-items:start;margin-bottom:24px}
.project-intro>div{max-width:80ch}.project-intro .eyebrow{font-size:10px;margin-bottom:8px}
.project-intro h2{font-size:27px;margin-bottom:10px}.project-intro p{font-size:14px;line-height:1.9}
.project-intro>a{flex-shrink:0;color:var(--accent);font-size:13px;padding-top:27px}
.project-section-heading{display:flex;align-items:center;justify-content:space-between;gap:15px;margin:0 0 12px}
.project-section-heading h3{font-size:16px}.project-section-heading>span{font-size:11px;color:var(--faint)}
.project-architecture{padding:20px;border:1px solid var(--line);border-radius:12px;background:var(--surface2)}
.project-diagram-canvas{width:calc(100% * var(--diagram-scale,1));margin:0 auto}
.project-diagram-canvas img,.project-diagram-canvas svg{display:block;max-width:none;width:100%;height:auto;border-radius:8px}
.project-architecture>p{font-size:12px;line-height:1.85}
.project-diagram-scroll{overflow:auto;max-height:min(65vh,600px);margin-bottom:12px;scrollbar-width:thin;scrollbar-color:var(--line) transparent}
.project-diagram-scroll:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:8px}
.project-diagram-scroll.can-pan .project-diagram-canvas{cursor:grab}
.project-diagram-scroll.is-panning,.project-diagram-scroll.is-panning *{cursor:grabbing!important;user-select:none}
.project-diagram-canvas img{-webkit-user-drag:none}
.project-diagram-tools{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin:0 0 12px}
.project-diagram-tools button{min-width:44px;min-height:44px;padding:6px 12px;border:1px solid var(--line);border-radius:8px;background:var(--surface);color:var(--accent);font-size:18px}
.project-diagram-tools .diagram-reset{font-size:13px}
.project-diagram-tools button:disabled{opacity:.4;cursor:default}
.project-diagram-tools button:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.project-diagram-tools output{min-width:48px;text-align:center;color:var(--ink);font-size:13px;font-variant-numeric:tabular-nums}
.project-diagram-slider{flex:1 1 140px;min-width:96px;max-width:260px;min-height:44px;margin:0;accent-color:var(--accent);cursor:ew-resize}
.project-diagram-tools>span{color:var(--muted);font-size:12px;line-height:1.6}
.project-reading{display:flex;gap:30px;align-items:start;padding:24px 0;border-bottom:1px solid var(--line);margin-bottom:24px}
.project-reading h3{font-size:14px;flex-shrink:0;padding-top:2px}
.project-reading ol{display:flex;flex-wrap:wrap;gap:8px 25px;padding:0 0 0 20px;margin:0;font-size:12px;color:var(--accent)}
.project-step{border-bottom:1px solid var(--line)}
.project-step>summary{display:flex;align-items:center;gap:14px;padding:16px 0;list-style:none;cursor:pointer}
.project-step>summary::-webkit-details-marker{display:none}.project-step>summary>span{font-size:12px;color:var(--accent);font-variant-numeric:tabular-nums}
.project-step>summary>strong{font-size:15px;font-weight:550}.project-step>summary>i{margin-left:auto;color:var(--faint);font-style:normal}
.project-step[open]>summary>i{font-size:0}.project-step[open]>summary>i::after{content:'−';font-size:15px}
.project-step-body{padding:0 0 20px 30px;font-size:14px}.project-step-body dl{display:grid;gap:14px;margin:0 0 14px}
.project-step-body dl>div{display:grid;grid-template-columns:108px minmax(0,1fr);gap:10px}
.project-step-body dt{color:var(--faint);font-size:12px;padding-top:2px}.project-step-body dd{margin:0;color:var(--muted);line-height:1.9;overflow-wrap:anywhere}
.project-step-body>a{font-size:12px;color:var(--accent)}.project-exercise{border-left:2px solid var(--accent);padding-left:12px}
.project-tradeoffs{padding:24px 0 8px}.project-tradeoffs h3{font-size:16px}
.project-tradeoffs ul{padding-left:18px;font-size:13px;color:var(--muted);line-height:1.9;display:grid;gap:8px}
.project-evidence{display:block;font-size:11px;letter-spacing:0;padding:18px 0 0;margin-top:12px;color:var(--faint)}
.project-evidence a{color:var(--accent)}.project-evidence details{margin-top:12px}.project-evidence summary{cursor:pointer}
.project-evidence ul{padding-left:18px;display:grid;gap:6px}.phase-projects{border-top:1px solid var(--line);margin-top:24px;padding-top:20px}
.phase-projects>p{font-size:13px;margin:6px 0 12px}.phase-projects>div{display:flex;gap:8px;flex-wrap:wrap}
@media(max-width:900px){.project-tabs{grid-template-columns:repeat(2,minmax(0,1fr))}.project-detail{padding:22px}.project-reading{display:block}.project-reading ol{margin-top:12px}.project-intro{flex-wrap:wrap;gap:10px}.project-intro>a{padding-top:0}}
@media(max-width:620px){.sidebar nav{flex-wrap:wrap}.project-detail{padding:18px;scroll-margin-top:158px}.project-architecture{padding:12px}.project-section-heading{align-items:start;flex-direction:column;gap:3px}.project-step-body{padding-left:0}.project-step-body dl>div{display:block}.project-step-body dt{margin-bottom:5px}.project-tabs button{padding:12px}.project-tabs small{font-size:10px}.project-intro h2{font-size:23px}}
@media(max-width:620px){
  #projects{scroll-margin-top:135px}
  .sidebar nav{flex-wrap:nowrap}
  .sidebar nav a{flex-direction:column;gap:6px;padding:8px 2px}
  .sidebar nav a .nav-label{font-size:12px;line-height:1.3;white-space:nowrap}
  .sidebar nav a>span:first-child{width:16px;font-size:16px}
}

@media(max-width:620px){
  .project-diagram-slider{order:2;flex-basis:100%;max-width:none;width:100%}
  .project-diagram-tools>span{order:3;flex-basis:100%}
}