/* Layout: a dark optics lab. Full-bleed instrument panels (the 3D bench, the agent console, the
   memory-path diagram) alternate with a reading column of about 68ch. Two light sources only:
   the 800 nm pump (red) and the 1270 nm emission (amber); everything else is instrument grey.
   One deliberate look: lab lights off, so the palette is dark in both themes. */
:root {
  --bg: #07090c;
  --surface: #0d1116;
  --panel: #10151b;
  --ink: #e8ecf1;
  --muted: #8a94a2;
  --rule: #1d242d;
  --accent: #ff4a3d;        /* 800 nm pump, drawn visible */
  --emit: #ffae4a;          /* 1270 nm singlet-oxygen emission */
  --cool: #7fb6ff;          /* data highlights, the GPU */
  --font-display: "Schibsted Grotesk", "Segoe UI", system-ui, sans-serif;
  --font-body: "Source Serif 4", Georgia, "Times New Roman", serif;
  --font-data: "Martian Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;
  --step--2: 0.72rem;
  --step--1: 0.86rem;
  --step-0: 1.06rem;
  --step-1: 1.3rem;
  --step-2: clamp(1.6rem, 3.2vw, 2.2rem);
  --step-3: clamp(2.2rem, 5.2vw, 4rem);
  --measure: 68ch;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
.gutter { padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
.page { max-width: 1120px; margin: 0 auto; }
a { color: inherit; text-decoration-color: var(--rule); text-decoration-thickness: 1px; text-underline-offset: 4px; }
a:hover { text-decoration-color: var(--accent); }
a:focus-visible, button:focus-visible { outline: 2px solid var(--emit); outline-offset: 3px; border-radius: 2px; }
h1, h2, h3 { font-family: var(--font-display); font-weight: 600; letter-spacing: -0.02em; line-height: 1.08; margin: 0; text-wrap: balance; }
p, ul, ol { margin: 0; }
sup { line-height: 0; }
.mono, .label { font-family: var(--font-data); font-size: var(--step--2); letter-spacing: 0.05em; color: var(--muted); }
.label { text-transform: uppercase; }
.num { font-family: var(--font-data); font-variant-numeric: tabular-nums; }
.result { color: var(--emit); }
.pump { color: var(--accent); }

/* header */
.top-wrap { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; background: rgba(7, 9, 12, 0.72); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-bottom: 1px solid var(--rule); }
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 30; background: var(--bg); }
.top { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 8px 24px; padding-block: 14px; }
.brand { font-family: var(--font-display); font-weight: 600; text-decoration: none; display: inline-flex; align-items: center; gap: 10px; }
.brand::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 10px 2px rgba(255, 74, 61, 0.7); }
.top nav { display: flex; flex-wrap: wrap; gap: 4px 22px; font-family: var(--font-data); font-size: var(--step--2); letter-spacing: 0.05em; }
.top nav a { text-decoration: none; color: var(--muted); }
.top nav a:hover { color: var(--ink); }

/* hero: 3D bench behind, copy in front */
.hero { position: relative; min-height: min(86vh, 820px); display: grid; align-items: end; overflow: hidden; border-bottom: 1px solid var(--rule); }
.hero canvas.bench { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.hero::after { content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(90deg, rgba(7, 9, 12, 0.92) 0%, rgba(7, 9, 12, 0.55) 42%, rgba(7, 9, 12, 0) 70%),
              linear-gradient(0deg, rgba(7, 9, 12, 0.95) 0%, rgba(7, 9, 12, 0) 38%); }
.hero-copy { position: relative; z-index: 2; padding-block: 120px 44px; display: grid; gap: 22px; }
.hero h1 { font-size: var(--step-3); max-width: 15ch; }
.hero h1 em { font-style: normal; color: var(--accent); text-shadow: 0 0 28px rgba(255, 74, 61, 0.45); }
.hero .lede { color: #b9c1cc; font-size: var(--step-1); line-height: 1.5; max-width: 50ch; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; }
.btn { font-family: var(--font-data); font-size: var(--step--2); letter-spacing: 0.06em; text-transform: uppercase; text-decoration: none; padding: 12px 18px; border: 1px solid var(--ink); color: var(--ink); background: transparent; display: inline-flex; gap: 10px; align-items: center; }
.btn.primary { background: var(--ink); color: var(--bg); }
.btn:hover { border-color: var(--accent); }
.btn.primary:hover { background: var(--accent); border-color: var(--accent); color: #fff; }
.path-legend { display: flex; flex-wrap: wrap; gap: 6px 10px; align-items: center; font-family: var(--font-data); font-size: var(--step--2); color: var(--muted); }
.path-legend b { font-weight: 400; color: var(--ink); }
.path-legend .arrow { color: var(--accent); }
.hud { position: absolute; z-index: 3; right: max(16px, env(safe-area-inset-right, 0px)); bottom: 40px; width: min(320px, 30vw); background: rgba(13, 17, 22, 0.78); border: 1px solid var(--rule); padding: 12px 14px 10px; display: grid; gap: 6px; backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); }
.hud canvas { width: 100%; height: 110px; display: block; }
.hud .row { display: flex; justify-content: space-between; gap: 8px; }
@media (max-width: 760px) { .hud { display: none; } .hero::after { background: linear-gradient(0deg, rgba(7, 9, 12, 0.96) 0%, rgba(7, 9, 12, 0.7) 55%, rgba(7, 9, 12, 0.35) 100%); } }

/* readings strip */
.readings { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1px; background: var(--rule); border-bottom: 1px solid var(--rule); }
.readings > div { background: var(--bg); padding: 26px 24px 24px; display: grid; gap: 6px; }
.readings .value { font-family: var(--font-data); font-size: clamp(1.4rem, 2.6vw, 1.9rem); font-variant-numeric: tabular-nums; letter-spacing: -0.03em; }
.readings .note { font-size: var(--step--1); color: var(--muted); }
.article-head .readings { background: none; border: 0; gap: 20px 32px; }
.article-head .readings > div { background: none; padding: 12px 0 0; border-top: 1px solid var(--ink); }

/* section grid: margin label + content */
.block { display: grid; grid-template-columns: 190px minmax(0, 1fr); gap: 14px 48px; padding-block: 80px; border-top: 1px solid var(--rule); }
.block:first-child { border-top: 0; }
.block > .side { padding-top: 8px; display: grid; gap: 4px; align-content: start; }
.block > .main { display: grid; gap: 24px; min-width: 0; max-width: var(--measure); }
.block > .main.wide { max-width: none; }
@media (max-width: 760px) { .block { grid-template-columns: 1fr; padding-block: 56px; } }
h2 { font-size: var(--step-2); }
h3 { font-size: var(--step-1); }
.kicker { color: #b9c1cc; font-size: var(--step-1); line-height: 1.5; }

/* instrument panel: framed, dark, full width of the content column */
.panel { background: var(--panel); border: 1px solid var(--rule); position: relative; min-width: 0; }
.panel-head { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; padding: 10px 14px; border-bottom: 1px solid var(--rule); font-family: var(--font-data); font-size: var(--step--2); color: var(--muted); letter-spacing: 0.05em; }
.panel-head .live { color: var(--accent); }
.panel-head .live::before { content: "● "; animation: blink 1.4s steps(2, start) infinite; }
@keyframes blink { to { visibility: hidden; } }
@media (prefers-reduced-motion: reduce) { .panel-head .live::before { animation: none; } }

/* agent console + chart */
.lab-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 16px; }
@media (max-width: 900px) { .lab-grid { grid-template-columns: 1fr; } }
.console { font-family: var(--font-data); font-size: 0.72rem; line-height: 1.75; padding: 12px 14px; height: 392px; overflow: hidden; display: flex; flex-direction: column; justify-content: flex-end; }
.console .ln { display: grid; grid-template-columns: 3.2em minmax(0, 1fr) auto; gap: 10px; white-space: nowrap; }
.console .ln .t { color: #4f5966; }
.console .ln .call { overflow: hidden; text-overflow: ellipsis; }
.console .ln .call b { font-weight: 400; color: var(--cool); }
.console .ln .ret { color: var(--muted); }
.console .ln.hot .ret { color: var(--emit); }
.console .ln.fire .call b { color: var(--accent); }
.console .ln.final { color: var(--emit); }
.chart svg { display: block; width: 100%; height: auto; }
.chart .pt { transition: opacity 0.4s, transform 0.4s; transform-box: fill-box; transform-origin: center; }
.chart .pt.off { opacity: 0; transform: scale(0.2); }
.chart .fit { transition: stroke-dashoffset 1.2s ease; }
.replay { font-family: var(--font-data); font-size: var(--step--2); letter-spacing: 0.05em; background: none; border: 1px solid var(--rule); color: var(--muted); padding: 4px 10px; cursor: pointer; }
.replay:hover { color: var(--ink); border-color: var(--muted); }

/* diagrams */
.diagram { overflow-x: auto; }
.diagram svg { display: block; width: 100%; min-width: 640px; height: auto; }
.diagram text { font-family: var(--font-data); }
.caption { font-size: var(--step--1); color: var(--muted); padding: 10px 14px 12px; border-top: 1px solid var(--rule); }

/* work cards */
.work { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px; }
.card { background: var(--panel); border: 1px solid var(--rule); padding: 22px; display: grid; gap: 12px; align-content: start; text-decoration: none; transition: border-color 0.2s, transform 0.2s; }
.card:hover { border-color: var(--muted); transform: translateY(-2px); }
@media (prefers-reduced-motion: reduce) { .card:hover { transform: none; } }
.card .figure-num { font-family: var(--font-data); font-variant-numeric: tabular-nums; font-size: var(--step-1); color: var(--emit); letter-spacing: -0.02em; }
.card p { color: var(--muted); font-size: var(--step--1); line-height: 1.55; }
.card .go { font-family: var(--font-data); font-size: var(--step--2); color: var(--ink); letter-spacing: 0.05em; }

/* system parts */
.parts { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 0 32px; margin: 0; }
.parts div { padding-block: 12px; border-top: 1px solid var(--rule); display: grid; gap: 2px; }
.parts dt { font-family: var(--font-display); font-weight: 600; }
.parts dd { margin: 0; color: var(--muted); font-size: var(--step--1); line-height: 1.5; }

/* tables */
.table-scroll { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; min-width: 560px; font-size: var(--step--1); line-height: 1.45; }
th, td { text-align: left; vertical-align: top; padding: 11px 16px 11px 0; border-bottom: 1px solid var(--rule); }
th { font-family: var(--font-data); font-size: var(--step--2); font-weight: 400; letter-spacing: 0.05em; text-transform: uppercase; color: var(--muted); }
td.n { font-family: var(--font-data); font-variant-numeric: tabular-nums; white-space: nowrap; }
.tag { font-family: var(--font-data); font-size: var(--step--2); letter-spacing: 0.05em; text-transform: uppercase; white-space: nowrap; padding: 2px 8px; border: 1px solid var(--rule); }
.tag.kept { color: var(--ink); border-color: #2f3a46; }
.tag.no { color: var(--accent); border-color: rgba(255, 74, 61, 0.4); }

/* timeline */
.timeline { list-style: none; padding: 0; display: grid; }
.timeline li { display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: 4px 20px; padding-block: 14px; border-top: 1px solid var(--rule); }
.timeline li:first-child { border-top: 0; padding-top: 0; }
@media (max-width: 520px) { .timeline li { grid-template-columns: 1fr; } }

/* article pages */
.article-head { padding-block: 80px 48px; display: grid; gap: 20px; max-width: 820px; }
.article-head h1 { font-size: var(--step-3); }
.article-head .lede { color: #b9c1cc; font-size: var(--step-1); line-height: 1.5; }
.prose { display: grid; gap: 18px; }
.prose ol, .prose ul { padding-left: 1.3em; display: grid; gap: 8px; }
.prose li::marker { font-family: var(--font-data); font-size: var(--step--2); color: var(--muted); }
.prose strong { font-weight: 600; }
pre { margin: 0; overflow-x: auto; background: var(--panel); border: 1px solid var(--rule); padding: 16px 18px; font-family: var(--font-data); font-size: 0.76rem; line-height: 1.6; }
pre .add { color: var(--emit); }
pre .cmt { color: var(--muted); }
figure { margin: 0; display: grid; gap: 10px; }
figure .plot { overflow-x: auto; }
figure .plot svg { display: block; width: 100%; min-width: 560px; height: auto; }
figcaption { font-size: var(--step--1); color: var(--muted); }
.back { font-family: var(--font-data); font-size: var(--step--2); letter-spacing: 0.05em; color: var(--muted); text-decoration: none; }

/* contact + footer */
.contact { display: flex; flex-wrap: wrap; gap: 12px 20px; align-items: center; }
.email { font-family: var(--font-data); font-size: var(--step--1); user-select: all; }
.copy { font-family: var(--font-data); font-size: var(--step--2); letter-spacing: 0.05em; padding: 8px 14px; border: 1px solid var(--ink); background: transparent; color: var(--ink); cursor: pointer; }
.copy:hover { background: var(--ink); color: var(--bg); }
footer { border-top: 1px solid var(--rule); padding-block: 28px 48px; display: grid; gap: 6px; }

/* roles: flagship engagement card and evidence table */
.flagship { border-color: #2f3a46; }
.flagship .stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 12px 20px; padding-block: 6px; }
.flagship .stats div { display: grid; gap: 2px; }
.flagship .stats span:last-child { color: var(--muted); font-size: var(--step--2); }
table.roles td a { color: var(--ink); }