/* Thinking in Systems: editorial treatment scoped to essay pages. */
.essay-page{background:#010611;color:#fcfcfc}
.essay-page a{transition:color .18s ease}
.essay-page a:hover{color:#91a7ff}
.essay-shell{width:min(100% - 48px,1100px);margin-inline:auto}
.essay-nav{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.essay-brand{display:inline-flex;align-items:center;gap:12px;color:#fff;text-decoration:none;font-weight:700}
.essay-brand-mark{width:22px;height:6px;background:#315cff;display:inline-block}
.essay-back{color:#bec6cd;text-decoration:none;font-family:"Roboto Mono",monospace;font-size:.8rem}
.essay-hero{padding:120px 0 70px;position:relative;background:radial-gradient(ellipse at 85% 5%,rgba(49,92,255,.18),transparent 46%)}
.essay-hero h1{margin:25px 0 25px;max-width:1000px;font-size:clamp(3.6rem,9vw,8.5rem);line-height:.95;letter-spacing:-.06em}
.essay-hero h1 em{font-style:normal;color:#00b884}
.essay-deck{max-width:750px;color:#c3cbd6;font-size:clamp(1.15rem,2.5vw,1.6rem);line-height:1.46;margin:25px 0 30px}
.essay-divider{padding:0 12px;color:#73777f}
.essay-byline{display:flex;flex-wrap:wrap;gap:12px 25px;color:#a7b1c3;font:400 .78rem/1.5 "Roboto Mono",monospace}
.essay-byline a{color:#fcfcfc;text-decoration:underline;text-underline-offset:3px}
.essay-hero-rule{display:flex;gap:8px;margin-top:55px}
.essay-hero-rule span{height:4px;background:#234481;flex:1}
.essay-hero-rule span:first-child{background:#00b884}
.essay-hero-rule span:nth-child(2){background:#315cff}
.essay-layout{display:grid;grid-template-columns:210px minmax(0,690px);gap:clamp(32px,8vw,110px);align-items:start;padding:45px 0 110px}
.essay-side{position:sticky;top:110px}
.essay-side-label,.essay-kicker,.essay-mini-label{font:.76rem/1.55 "Roboto Mono",monospace;text-transform:uppercase;letter-spacing:.12em;color:#8c9cba}
.essay-side nav{display:flex;flex-direction:column;gap:15px;margin-top:22px}
.essay-side nav a{font-size:.85rem;color:#a1adbf;text-decoration:none}
.essay-side nav a:hover{color:#fff}
.essay-body{min-width:0;color:#c6cedc;font-size:1.08rem;line-height:1.76}
.essay-body section{scroll-margin-top:100px;margin-bottom:70px}
.essay-body p{margin:0 0 24px}
.essay-body a{color:#b0c3ff;text-decoration:underline;text-underline-offset:4px}
.essay-body strong{color:#fcfcfc}
.essay-body h2{color:#fff;font-size:clamp(2rem,4vw,2.8rem);line-height:1.16;letter-spacing:-.03em;margin:0 0 25px}
.essay-body .essay-lead{font-size:clamp(1.3rem,2.3vw,1.65rem);line-height:1.53;color:#f1f3f7;margin-bottom:28px}
.essay-body blockquote{border-left:4px solid #00b884;margin:35px 0;padding:13px 0 13px 28px;font-size:clamp(1.4rem,3vw,2rem);color:#fff;line-height:1.35;font-weight:700}
.essay-contrast{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:34px 0}
.essay-contrast>div{border:1px solid rgba(190,198,205,.27);padding:24px;border-radius:6px;background:rgba(7,39,74,.27)}
.essay-contrast>div:first-child{border-top:3px solid #00b884}
.essay-contrast>div:last-child{border-top:3px solid #315cff}
.essay-contrast strong{display:block;font-size:1.05rem;line-height:1.5;margin:15px 0 12px}
.essay-contrast p{font-size:.92rem;line-height:1.5;margin:0}
.essay-questions{counter-reset:q;list-style:none;margin:24px 0 30px;padding:0}
.essay-questions li{counter-increment:q;padding:16px 0 16px 48px;position:relative;border-top:1px solid rgba(190,198,205,.18)}
.essay-questions li::before{content:counter(q,decimal-leading-zero);position:absolute;left:0;color:#00b884;font: .78rem "Roboto Mono",monospace;top:22px}
.essay-ending{font-size:clamp(1.35rem,2.8vw,1.85rem);line-height:1.4}
.essay-end{padding-top:28px;border-top:1px solid rgba(190,198,205,.24)}
.essay-end h2{font-size:1.4rem;margin:38px 0 12px}
.essay-end>p{font-size:.96rem}
.essay-sources{padding-left:21px;font-size:.9rem;line-height:1.5}
.essay-sources li{margin:10px 0}
.essay-signoff{margin-top:45px;padding-top:20px;border-top:1px solid rgba(190,198,205,.2);display:flex;justify-content:space-between;gap:20px;font-size:.9rem}
@media(max-width:820px){.essay-layout{grid-template-columns:1fr;padding-top:15px}.essay-side{display:none}.essay-shell{width:min(100% - 40px,690px)}.essay-hero{padding:85px 0 48px}.essay-hero-rule{margin-top:42px}.essay-body section{margin-bottom:55px}}
@media(max-width:540px){.essay-hero h1{font-size:clamp(3.2rem,14vw,5rem)}.essay-deck{font-size:1.13rem}.essay-contrast{grid-template-columns:1fr}.essay-byline{gap:9px 14px}.essay-back{font-size:.72rem}}
@media(prefers-reduced-motion:reduce){.essay-page a{transition:none}}

/* Notes archive */
.notes-top-links{display:flex;gap:22px;align-items:center}
.notes-top-links a{color:#bec6cd;font: .83rem "Roboto Mono",monospace;text-decoration:none}
.notes-top-links a[aria-current="page"]{color:#fff}
.notes-hub-hero{padding:112px 0 65px;background:radial-gradient(ellipse at 80% 5%,rgba(49,92,255,.2),transparent 50%)}
.notes-hub-hero h1{font-size:clamp(3.5rem,8vw,7.6rem);letter-spacing:-.06em;line-height:.97;max-width:980px}
.notes-hub-hero h1 em{color:#00b884;font-style:normal}
.notes-collection{padding:60px 0 110px}
.notes-section-heading{display:flex;align-items:end;justify-content:space-between;gap:20px;border-bottom:1px solid rgba(190,198,205,.3);padding-bottom:20px;margin-bottom:30px}
.notes-section-heading h2{margin:8px 0 0;font-size:2rem}
.notes-count{color:#9aaac1;font:.74rem "Roboto Mono",monospace}
.notes-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.note-card{min-width:0;border:1px solid rgba(190,198,205,.26);border-radius:8px;overflow:hidden;background:#071326;transition:transform .2s ease,border-color .2s ease}
.note-card:hover{transform:translateY(-3px);border-color:#315cff}
.note-card>a{display:block;text-decoration:none;color:inherit}
.note-card-visual{height:220px;position:relative;display:grid;place-items:center;overflow:hidden;background:radial-gradient(ellipse at center,#103d53 0%,#061b31 42%,#010611 100%)}
.note-orbit{display:block;position:absolute;aspect-ratio:1;border-radius:50%;border:1px solid rgba(0,184,132,.7)}
.note-orbit-outer{width:225px;border-style:dashed;transform:rotate(25deg)}
.note-orbit-inner{width:140px;border-color:rgba(49,92,255,.8)}
.note-orbit-core{font-size:4rem;color:#00b884;line-height:1}
.note-orbit-dot{position:absolute;background:#00b884;border-radius:50%;width:12px;height:12px;transform:translate(103px,-42px)}
.note-card-content{padding:30px}
.note-card-content h3{font-size:clamp(1.6rem,3vw,2rem);line-height:1.15;margin:12px 0 15px}
.note-card-content>p:not(.essay-kicker){color:#bac5d7;font-size:.97rem;line-height:1.6;margin:0 0 22px}
.note-tags{display:flex;flex-wrap:wrap;gap:7px}
.note-tags span{border:1px solid rgba(190,198,205,.24);border-radius:3px;color:#a9b8d2;padding:5px 7px;font:.67rem "Roboto Mono",monospace}
.notes-read{display:inline-flex;gap:10px;margin-top:26px;color:#a7bcff;font-size:.92rem;font-weight:700}
.notes-archive-note{margin-top:28px;color:#91a1b7;font-size:.92rem}
.essay-crumbs{font:.76rem "Roboto Mono",monospace;color:#94a4be;margin-bottom:20px}
.essay-crumbs a{color:#bdcaff;text-decoration:none}
.essay-crumbs span{margin-right:7px}
@media(max-width:860px){.notes-grid{grid-template-columns:1fr}.notes-hub-hero{padding:85px 0 50px}}
@media(max-width:540px){.notes-hub-hero h1{font-size:clamp(3rem,13vw,4.8rem)}.notes-section-heading{align-items:start}.essay-signoff{flex-wrap:wrap}}
@media(prefers-reduced-motion:reduce){.note-card{transition:none}.note-card:hover{transform:none}}

/* Reusable archive cover variation: two interlocking experiences/layers. */
.note-card-visual--dual{background:linear-gradient(115deg,rgba(49,92,255,.2) 0%,rgba(4,23,47,.95) 48%,rgba(0,184,132,.15) 100%),#010611}
.note-dual-ring{position:absolute;width:148px;height:148px;border:1.5px solid rgba(102,138,255,.75);border-radius:50%;transform:translateX(-44px)}
.note-dual-ring--right{border-color:rgba(0,184,132,.85);transform:translateX(44px)}
.note-dual-core{position:relative;z-index:1;display:grid;place-items:center;width:80px;height:80px;border:1px solid rgba(190,198,205,.32);border-radius:50%;background:#05172b;color:#d4f3e9;font-size:2.9rem}

/* Reusable Notes archive cover variation for collaboration, delegation, and work. */
.note-card-visual--coordination{display:flex;gap:6px;align-items:center;justify-content:center;background:radial-gradient(ellipse at 50% 50%,rgba(49,92,255,.19),transparent 72%),linear-gradient(145deg,#041628,#020915)}
.note-coord-node{display:grid;place-items:center;width:63px;height:63px;border:1px solid rgba(190,198,205,.4);border-top:2px solid #315cff;border-radius:8px;background:rgba(7,39,74,.75);color:#bdd0ff;font-size:2.1rem}
.note-coord-node--agents{border-top-color:#00b884;color:#00b884}
.note-coord-node--team{border-top-color:#b7c4d6;color:#e8edf5}
.note-coord-line{width:32px;height:2px;background:linear-gradient(90deg,#315cff,#00b884)}
@media(max-width:400px){.note-coord-node{width:54px;height:54px}.note-coord-line{width:22px}}

/* Notes archive artwork: varied paths for Field Note 004. */
.note-card-visual--open-loops{position:relative;background:radial-gradient(ellipse at 50% 50%,rgba(0,184,132,.14),transparent 70%),linear-gradient(130deg,#071e32,#010611)}
.note-loop-rings{display:grid;grid-template-columns:repeat(2,64px);gap:9px;transform:rotate(-11deg)}
.note-loop-rings>span{display:block;width:64px;height:64px;border:3px solid rgba(129,155,255,.75);border-right-color:transparent;border-radius:50%;transform:rotate(-40deg)}
.note-loop-rings>span:nth-child(2){border-color:rgba(0,184,132,.7);border-bottom-color:transparent;transform:rotate(50deg)}
.note-loop-rings>span:nth-child(3){border-color:rgba(190,198,205,.63);border-top-color:transparent;transform:rotate(0deg)}
.note-loop-rings>span:nth-child(4){border-color:rgba(0,184,132,.62);border-left-color:transparent;transform:rotate(112deg)}
.note-loop-mark{position:absolute;right:22%;top:18%;font-size:1.7rem;color:#b4dcca}