/* ══════════════════════════════════════════════════════════════════
   Content pages — homepage, the FDE pillar, book, speaking.
   Depends on site.css for tokens and chrome.
   ══════════════════════════════════════════════════════════════════ */

/* ── hero ── */
.phero{padding:clamp(48px,8vh,92px) 0 clamp(26px,4vh,44px);position:relative;overflow:hidden}
.phero::before{content:'';position:absolute;inset:0;z-index:0;pointer-events:none;opacity:.4;
  background-image:linear-gradient(var(--rule) 1px,transparent 1px),
                   linear-gradient(90deg,var(--rule) 1px,transparent 1px);
  background-size:34px 34px;
  -webkit-mask-image:radial-gradient(120% 80% at 12% 0%,#000 0%,transparent 68%);
  mask-image:radial-gradient(120% 80% at 12% 0%,#000 0%,transparent 68%)}
.phero .wrap{position:relative;z-index:1}
.eyebrow{display:inline-flex;align-items:center;gap:9px;background:var(--cyan-wash);
  border:1px solid color-mix(in srgb,var(--cyan) 24%,transparent);border-radius:999px;
  padding:6px 14px;margin-bottom:20px;font-family:var(--mono);font-size:11px;font-weight:600;
  letter-spacing:.11em;text-transform:uppercase;color:var(--cyan)}
.deck{font-size:clamp(18px,2.1vw,21px);line-height:1.52;max-width:56ch;margin:20px 0 0;color:var(--ink-2)}
.deck strong{font-weight:600}
.byline{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:24px;
  padding-top:18px;border-top:1px solid var(--rule)}
.byline span{font-family:var(--mono);font-size:11.5px;letter-spacing:.06em;color:var(--ink-3)}
.byline b{color:var(--ink);font-weight:600}
.herocta{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}

/* ── document layout with a sticky contents rail ── */
.doc{max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter);
  display:grid;grid-template-columns:210px 1fr;gap:clamp(26px,5vw,64px);align-items:start}
.rail{position:sticky;top:74px;padding:44px 0}
.rail:empty{padding:0;border:none}
.rail__hd{font-family:var(--mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--ink-3);padding-bottom:11px;margin-bottom:12px;border-bottom:1px solid var(--rule)}
.rail a{display:flex;gap:10px;align-items:baseline;padding:6px 0;font-family:var(--mono);
  font-size:11.5px;color:var(--ink-3);line-height:1.35;transition:color .16s}
.rail a i{font-style:normal;color:var(--rule-2);font-variant-numeric:tabular-nums;flex:none;transition:color .16s}
.rail a:hover,.rail a.on{color:var(--ink)}
.rail a.on i{color:var(--cyan)}
.body{padding:44px 0 0;min-width:0}

/* ── sections ── */
.sec{padding:0 0 clamp(48px,7vh,76px);scroll-margin-top:72px}
.sec__hd{display:flex;align-items:baseline;gap:14px;padding-bottom:16px;margin-bottom:24px;
  border-bottom:1px solid var(--rule)}
.sec__num{font-family:var(--mono);font-size:11px;font-weight:600;letter-spacing:.1em;
  color:var(--cyan);flex:none;font-variant-numeric:tabular-nums}
.sec__hd h2{flex:1;min-width:0}
.prose{max-width:var(--measure)}
.prose a:not(.btn){color:var(--ink);border-bottom:1px solid var(--cyan);padding-bottom:.5px;
  transition:background .18s}
.prose a:not(.btn):hover{background:color-mix(in srgb,var(--cyan) 14%,transparent)}
.lede{font-size:19.5px;line-height:1.52;color:var(--ink);margin-bottom:1.2em}

/* ── pull quote / field note ── */
.note{border-left:3px solid var(--cyan);padding:2px 0 2px 20px;margin:28px 0;max-width:var(--measure)}
.note p{font-size:18.5px;line-height:1.48;color:var(--ink)}
.note cite{display:block;margin-top:10px;font-style:normal;font-family:var(--mono);
  font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3)}

/* ── spec list ── */
.specs{list-style:none;padding:0;margin:24px 0;max-width:var(--measure)}
.specs li{display:grid;grid-template-columns:26px 1fr;gap:16px;padding:15px 0;border-top:1px solid var(--rule)}
.specs li:last-child{border-bottom:1px solid var(--rule)}
.specs .k{font-family:var(--mono);font-size:11px;font-weight:600;color:var(--cyan);
  font-variant-numeric:tabular-nums;padding-top:5px}
.specs h4{margin-bottom:5px}
.specs p{font-size:16.5px;line-height:1.55;margin:0}

/* ── tables ── */
.tablewrap{overflow-x:auto;margin:26px 0;border:1px solid var(--rule);border-radius:12px;background:var(--panel)}
table{border-collapse:collapse;width:100%;min-width:660px;font-size:15px}
caption{font-family:var(--mono);font-size:10.5px;letter-spacing:.13em;text-transform:uppercase;
  color:var(--ink-3);text-align:left;padding:12px 16px;border-bottom:1px solid var(--rule);background:var(--panel-2)}
th,td{padding:13px 16px;text-align:left;vertical-align:top;border-bottom:1px solid var(--rule)}
thead th{font-family:var(--mono);font-size:10.5px;font-weight:600;letter-spacing:.1em;
  text-transform:uppercase;color:var(--ink-3);white-space:nowrap;background:var(--panel-2)}
tbody th{font-family:var(--display);font-weight:700;font-size:15px;color:var(--ink);
  letter-spacing:-.01em;white-space:nowrap}
tbody tr:last-child th,tbody tr:last-child td{border-bottom:none}
tbody tr.is-me{background:color-mix(in srgb,var(--cyan) 7%,transparent)}
tbody tr.is-me th{color:var(--cyan)}
td{color:var(--ink-2);line-height:1.45}

/* ── metrics ── */
.metrics{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));
  border:1px solid var(--rule);border-radius:12px;overflow:hidden;margin:26px 0;background:var(--panel)}
.metric{padding:22px;border-right:1px solid var(--rule)}
.metric:last-child{border-right:none}
.metric__n{font-family:var(--display);font-weight:800;font-size:clamp(26px,3vw,34px);
  color:var(--ink);letter-spacing:-.03em;line-height:1;margin-bottom:8px;font-variant-numeric:tabular-nums}
.metric__l{font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;line-height:1.45;
  color:var(--ink-3);text-transform:uppercase}
@media (max-width:640px){.metric{border-right:none;border-bottom:1px solid var(--rule)}
  .metric:last-child{border-bottom:none}}

/* ── spokes: outbound cards ── */
.spokes{display:grid;gap:14px;margin:26px 0}
.spoke{border:1px solid var(--rule);border-radius:14px;background:var(--panel);padding:24px;
  display:grid;grid-template-columns:1fr auto;gap:20px;align-items:center;
  transition:border-color .2s,transform .2s var(--ease),box-shadow .2s}
.spoke:hover{border-color:color-mix(in srgb,var(--cyan) 45%,transparent);
  transform:translateY(-2px);box-shadow:var(--shadow-lift)}
.spoke__k{margin-bottom:9px}
.spoke h3{margin-bottom:8px}
.spoke p{font-size:16px;line-height:1.52;margin:0;max-width:60ch}
.spoke__go{font-family:var(--mono);font-size:11px;font-weight:600;letter-spacing:.1em;
  text-transform:uppercase;color:var(--ink);display:inline-flex;align-items:center;gap:8px;
  white-space:nowrap;border:1px solid var(--rule-2);border-radius:8px;padding:11px 16px;
  transition:background .18s,color .18s,border-color .18s}
.spoke:hover .spoke__go{background:var(--cyan);color:var(--cyan-ink);border-color:var(--cyan)}
.spoke__go svg{width:11px;height:11px;flex:none}
@media (max-width:620px){.spoke{grid-template-columns:1fr}.spoke__go{justify-self:start}}

/* ── FAQ ── */
.faq{border-top:1px solid var(--rule);margin:24px 0 0;max-width:var(--measure)}
.faq details{border-bottom:1px solid var(--rule)}
.faq summary{padding:17px 30px 17px 0;cursor:pointer;position:relative;list-style:none;
  font-family:var(--display);font-weight:600;font-size:17px;color:var(--ink);
  letter-spacing:-.01em;line-height:1.35}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:'';position:absolute;right:4px;top:24px;width:9px;height:9px;
  border-right:1.5px solid var(--ink-3);border-bottom:1.5px solid var(--ink-3);
  transform:rotate(45deg);transition:transform .22s var(--ease)}
.faq details[open] summary::after{transform:rotate(-135deg);top:27px}
.faq summary:hover{color:var(--cyan)}
.faq__a{padding:0 0 19px;font-size:16.5px;line-height:1.58}

/* ── inverted band ── */
.field{background:var(--field);color:var(--field-ink);border-radius:14px;
  margin:clamp(26px,4vh,42px) 0 clamp(48px,7vh,76px);padding:clamp(28px,4vw,42px);scroll-margin-top:72px}
.field h2,.field h3{color:var(--field-ink)}
.field p{color:color-mix(in srgb,var(--field-ink) 74%,transparent)}
.field .sec__hd{border-bottom-color:var(--field-rule)}
.field .sec__num{color:var(--field-cyan)}
.field .mono{color:color-mix(in srgb,var(--field-ink) 58%,transparent)}
.field .spoke{background:transparent;border-color:var(--field-rule)}
.field .spoke:hover{border-color:color-mix(in srgb,var(--field-ink) 34%,transparent);box-shadow:none}
.field .spoke__go{color:var(--field-ink);border-color:var(--field-rule)}
.field .spoke:hover .spoke__go{background:var(--field-cyan);color:#08191C;border-color:var(--field-cyan)}

/* ── contact block ── */
.contact{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px;margin:26px 0}
.contact a{border:1px solid var(--rule);border-radius:14px;background:var(--panel);padding:22px;
  display:block;transition:border-color .2s,transform .2s var(--ease)}
.contact a:hover{border-color:var(--cyan);transform:translateY(-2px)}
.contact .k{font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--ink-3);display:block;margin-bottom:7px}
.contact .v{font-family:var(--display);font-weight:700;font-size:17px;color:var(--ink);letter-spacing:-.015em}

/* ── reveal ──
   Scoped to .js, which a one-line inline script sets on <html>. Without it a
   failed or blocked script would leave every .rv element stuck at opacity:0 —
   invisible content is a far worse failure than a missing animation. */
.js .rv{opacity:0;transform:translateY(14px);transition:opacity .6s ease,transform .6s var(--ease)}
.js .rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.js .rv{opacity:1;transform:none;transition:none}}

@media (max-width:900px){
  .doc{grid-template-columns:1fr;gap:0}
  .rail{position:static;padding:32px 0 18px;border-bottom:1px solid var(--rule)}
  .rail__list{display:flex;flex-wrap:wrap;gap:4px 20px}
  .body{padding-top:34px}
}

/* ══════════════════════════════════════════════════════════════════
   Homepage components
   ══════════════════════════════════════════════════════════════════ */
.hero{padding:clamp(44px,7vh,84px) 0 clamp(26px,4vh,40px);position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;inset:0;z-index:0;pointer-events:none;opacity:.4;
  background-image:linear-gradient(var(--rule) 1px,transparent 1px),
                   linear-gradient(90deg,var(--rule) 1px,transparent 1px);
  background-size:34px 34px;
  -webkit-mask-image:radial-gradient(120% 80% at 12% 0%,#000 0%,transparent 68%);
  mask-image:radial-gradient(120% 80% at 12% 0%,#000 0%,transparent 68%)}
.hero__grid{position:relative;z-index:1;display:grid;grid-template-columns:1.25fr .75fr;
  gap:clamp(28px,5vw,64px);align-items:center}
.avail{display:inline-flex;align-items:center;gap:9px;background:var(--cyan-wash);
  border:1px solid color-mix(in srgb,var(--cyan) 24%,transparent);border-radius:999px;
  padding:6px 14px;margin-bottom:18px;font-family:var(--mono);font-size:11px;font-weight:600;
  letter-spacing:.11em;text-transform:uppercase;color:var(--cyan)}
.avail i{width:7px;height:7px;border-radius:50%;background:var(--cyan);flex:none;
  animation:blip 2.4s ease-in-out infinite}
@keyframes blip{0%,100%{opacity:1}50%{opacity:.35}}
.hero__deck{font-size:clamp(18px,2.1vw,21px);line-height:1.52;max-width:52ch;
  margin:18px 0 0;color:var(--ink-2)}
.hero__cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}

/* spec plate — deliberately stands in for a portrait */
.plate{border:1px solid var(--rule-2);border-radius:14px;background:var(--panel);
  min-height:290px;overflow:hidden;position:relative;box-shadow:var(--shadow)}
.plate::after{content:'';position:absolute;inset:44px 0 0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(var(--rule) 1px,transparent 1px),
                   linear-gradient(90deg,var(--rule) 1px,transparent 1px);
  background-size:26px 26px}
.plate__bar{display:flex;justify-content:space-between;gap:14px;padding:13px 16px;
  border-bottom:1px solid var(--rule-2);background:var(--panel-2);position:relative;z-index:1}

/* "work has shipped at" band */
.strip{border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);padding:26px 0;
  background:var(--panel)}
.strip__in{display:flex;align-items:center;gap:clamp(18px,4vw,48px);flex-wrap:wrap}
.strip__list{display:flex;align-items:center;gap:clamp(18px,3.5vw,42px);flex-wrap:wrap}
.strip__list span{font-family:var(--display);font-weight:600;font-size:19px;color:var(--ink);
  letter-spacing:-.015em;opacity:.85;white-space:nowrap}

/* feature callout */
.cat{border:1px solid var(--rule);border-left:3px solid var(--cyan);border-radius:14px;
  background:var(--panel);padding:clamp(24px,3.5vw,36px);margin:clamp(30px,5vh,52px) 0}
.cat h2{margin:12px 0 14px;max-width:24ch}
.cat p{max-width:var(--measure);font-size:16.5px}
.cat__go{display:inline-flex;align-items:center;gap:9px;margin-top:18px;font-family:var(--mono);
  font-size:11.5px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--cyan);
  border-bottom:1px solid color-mix(in srgb,var(--cyan) 40%,transparent);padding-bottom:3px;
  transition:border-color .18s}
.cat__go:hover{border-bottom-color:var(--cyan)}

/* three tracks */
.tracks{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:14px;margin:24px 0}
.track{border:1px solid var(--rule);border-radius:14px;background:var(--panel);padding:24px;
  display:flex;flex-direction:column;justify-content:space-between;gap:18px;
  transition:border-color .2s,transform .2s var(--ease),box-shadow .2s}
.track:hover{border-color:color-mix(in srgb,var(--cyan) 45%,transparent);
  transform:translateY(-3px);box-shadow:var(--shadow-lift)}
.track h3{margin:9px 0 8px}
.track p{font-size:15.5px;line-height:1.5;margin:0}
.track__go{font-family:var(--mono);font-size:11px;font-weight:600;letter-spacing:.1em;
  text-transform:uppercase;color:var(--ink);display:inline-flex;align-items:center;gap:8px;
  border:1px solid var(--rule-2);border-radius:8px;padding:10px 15px;align-self:flex-start;
  transition:background .18s,color .18s,border-color .18s}
.track:hover .track__go{background:var(--cyan);color:var(--cyan-ink);border-color:var(--cyan)}

@media (max-width:820px){
  .hero__grid{grid-template-columns:1fr;gap:34px}
  .plate{min-height:210px}
}

/* ══════════════════════════════════════════════════════════════════
   Pillar hero + the "where the FDE stands" schematic
   ══════════════════════════════════════════════════════════════════ */
.hero__desig{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;margin:0 0 24px;
  position:relative;z-index:1}
.rulefill{flex:1 1 60px;height:1px;background:var(--rule-2);align-self:center;min-width:30px}
.hero__by{display:flex;align-items:center;gap:11px;flex-wrap:wrap;margin-top:24px;
  padding-top:18px;border-top:1px solid var(--rule)}
.hero__by span{font-family:var(--mono);font-size:11.5px;letter-spacing:.06em;color:var(--ink-3)}
.hero__by b{color:var(--ink);font-weight:600}

.schematic{margin-top:clamp(30px,5vh,50px);border:1px solid var(--rule-2);background:var(--panel);
  border-radius:14px;overflow:hidden;position:relative;z-index:1;box-shadow:var(--shadow)}
.schematic__bar{display:flex;justify-content:space-between;gap:14px;padding:11px 16px;
  border-bottom:1px solid var(--rule-2);background:var(--panel-2)}
.schematic__body{padding:clamp(16px,3vw,30px);overflow-x:auto}
.schematic svg{width:100%;min-width:540px;height:auto;display:block}
.sch-node{fill:none;stroke:var(--rule-2);stroke-width:1}
.sch-lbl{font-family:var(--mono);font-size:10px;letter-spacing:.1em;text-transform:uppercase;fill:var(--ink-3)}
.sch-ttl{font-family:var(--display);font-size:14px;font-weight:700;letter-spacing:-.01em;fill:var(--ink)}
.sch-dim{stroke:var(--rule-2);stroke-width:1}
.sch-hatch{stroke:var(--rule-2);stroke-width:1;opacity:.5}
.sch-sig{fill:var(--cyan)}
.sch-sig-s{stroke:var(--cyan);stroke-width:1.5;fill:none}
.sch-sig-lbl{font-family:var(--mono);font-size:10px;font-weight:600;letter-spacing:.1em;
  text-transform:uppercase;fill:var(--cyan)}
.sch-pulse{animation:pulse 3.6s var(--ease) infinite}
@keyframes pulse{0%,100%{opacity:.4}50%{opacity:1}}
@media (prefers-reduced-motion:reduce){.sch-pulse,.avail i,.pulse i{animation:none;opacity:1}}

/* spec-plate data list: dt/dd pairs wrapped in rows */
.plate dl{margin:0;padding:18px 20px 20px;position:relative;z-index:1;display:grid;gap:2px}
.plate dl > div{display:grid;grid-template-columns:96px 1fr;gap:14px;align-items:baseline;
  padding:9px 0;border-bottom:1px solid var(--rule)}
.plate dl > div:last-child{border-bottom:none}
.plate dt{font-family:var(--mono);font-size:10px;letter-spacing:.13em;text-transform:uppercase;
  color:var(--ink-3);margin:0}
.plate dd{margin:0;font-family:var(--display);font-weight:600;font-size:14.5px;color:var(--ink);
  letter-spacing:-.01em;line-height:1.35}
.plate dd span{display:block;font-family:var(--serif);font-weight:400;font-size:13.5px;
  color:var(--ink-3);letter-spacing:0;margin-top:2px;line-height:1.3}
@media (max-width:420px){.plate dl > div{grid-template-columns:1fr;gap:2px}}

/* These sit under an h2, so they must be h3 for a valid outline — but they read
   as small sub-labels, so they keep the size an h4 had. */
.specs h3,.track h3,.contact h3{font-size:16px;letter-spacing:-.005em;line-height:1.3;margin-bottom:5px}

/* a single contact card shouldn't stretch the full grid width */
.contact:has(> a:only-child){grid-template-columns:minmax(220px,340px)}