@font-face {
  font-family: "Archivo";
  src: url("./assets/fonts/archivo-latin.woff2") format("woff2");
  font-style: normal;
  font-weight: 700;
  font-stretch: 100% 125%;
  font-display: swap;
}
@font-face {
  font-family: "Source Serif 4";
  src: url("./assets/fonts/source-serif-4-latin.woff2") format("woff2");
  font-style: normal;
  font-weight: 400 600;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("./assets/fonts/ibm-plex-mono-400-latin.woff2") format("woff2");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("./assets/fonts/ibm-plex-mono-500-latin.woff2") format("woff2");
  font-style: normal;
  font-weight: 500;
  font-display: swap;
}

:root {
  --water-deep: #0b1e2d;
  --water-mid: #16384e;
  --water-light: #26607d;
  --substrate: #c4b191;
  --chart-ink: #5e93a3;
  --signal-amber: #e8952c;
  --signal-chart: #b8d44a;
  --paper: #f2ede3;
  --depth: 0;
  color-scheme: dark;
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--water-deep); }
body {
  margin: 0;
  color: var(--substrate);
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--water-light) calc(100% - var(--depth) * .65%), var(--water-deep)) 0%, var(--water-mid) 40%, var(--water-deep) 100%);
  font-family: "Source Serif 4", Georgia, serif;
  font-size: 17px;
  line-height: 1.65;
  overflow-x: hidden;
}

a { color: var(--paper); text-decoration-color: var(--chart-ink); text-underline-offset: .22em; }
a:hover { text-decoration-color: currentColor; }
button, input, a { outline-offset: 3px; }
:focus-visible { outline: 2px solid var(--signal-amber); }

.skip-link { position: fixed; left: 1rem; top: -5rem; z-index: 100; padding: .6rem .8rem; background: var(--paper); color: var(--water-deep); }
.skip-link:focus { top: 1rem; }
.water-grain {
  position: fixed; inset: 0; z-index: -1; pointer-events: none; opacity: .13;
  background-image: radial-gradient(circle at 25% 20%, #fff 0 1px, transparent 1px), radial-gradient(circle at 75% 70%, #fff 0 1px, transparent 1px);
  background-size: 90px 90px, 130px 130px;
}
.substrate {
  position: fixed; z-index: -1; left: 0; right: 0; bottom: 0; height: 92px;
  background: linear-gradient(180deg, rgba(196,177,145,.28), rgba(196,177,145,.72));
  clip-path: polygon(0 16%, 8% 8%, 18% 19%, 31% 10%, 44% 20%, 57% 7%, 71% 17%, 84% 6%, 100% 18%, 100% 100%, 0 100%);
}
.substrate span { position: absolute; width: 4px; height: 4px; border-radius: 50%; background: rgba(11,30,45,.45); top: 50%; left: 12%; box-shadow: 210px 12px 0 rgba(11,30,45,.4), 490px -8px 0 rgba(11,30,45,.32), 760px 18px 0 rgba(11,30,45,.38), 1010px -4px 0 rgba(11,30,45,.34); }
.depth {
  position: fixed; z-index: 20; right: 2rem; bottom: 1.25rem; color: var(--water-deep);
  font: 500 .875rem/1 "IBM Plex Mono", ui-monospace, monospace; letter-spacing: .12em; mix-blend-mode: multiply;
}
.site-head {
  position: absolute; inset: 0 0 auto; z-index: 10; display: flex; justify-content: space-between; align-items: center;
  padding: 1.4rem clamp(1.2rem, 4vw, 4rem); font: 500 .75rem/1 "IBM Plex Mono", ui-monospace, monospace; letter-spacing: .12em; color: var(--paper);
}
.wordmark { font-family: "Archivo", Arial Black, sans-serif; font-weight: 800; letter-spacing: .08em; text-decoration: none; }

.story-section { width: min(1180px, calc(100% - 3rem)); margin: 0 auto; padding: 9rem 0; position: relative; }
.hero { min-height: 100svh; width: min(1400px, calc(100% - 3rem)); display: grid; grid-template-columns: minmax(0, .92fr) minmax(430px, 1.08fr); align-items: center; gap: 3rem; padding-top: 7rem; }
.hero-copy { max-width: 660px; }
.eyebrow, .instrument, .model-note, .scale, .material-tag, .field-note {
  font: 500 .75rem/1.45 "IBM Plex Mono", ui-monospace, monospace; letter-spacing: .1em; text-transform: uppercase;
}
.eyebrow { color: var(--paper); }
h1, h2, h3 { color: var(--paper); font-family: "Archivo", Arial Black, sans-serif; line-height: .98; letter-spacing: -.025em; margin: 0 0 1.2rem; }
h1 { font-size: clamp(3.5rem, 8vw, 7.5rem); max-width: 9ch; }
h2 { font-size: clamp(2.25rem, 5.5vw, 4.8rem); max-width: 15ch; }
h3 { font-size: 1.5rem; line-height: 1.15; }
.dek { color: var(--paper); font-size: 1.2rem; max-width: 57ch; }
.hypothesis { border-block: 1px solid var(--chart-ink); padding: 1.15rem 0; margin-top: 2.2rem; display: grid; grid-template-columns: 9rem 1fr; gap: 1.4rem; }
.hypothesis span { color: var(--paper); font: 500 .75rem/1.4 "IBM Plex Mono", ui-monospace, monospace; letter-spacing: .1em; }
.hypothesis p { margin: 0; font-size: .95rem; }

.hero-scene { margin: 0; }
.hero-scene svg, .posture-panels svg, .rig-diagram svg { display: block; width: 100%; height: auto; overflow: visible; }
.hero-scene text, .posture-panels text, .rig-diagram text { fill: var(--chart-ink); font: 500 12px "IBM Plex Mono", ui-monospace, monospace; letter-spacing: 1.5px; }
.sand-line, .scene-sand { fill: rgba(196,177,145,.34); stroke: var(--substrate); stroke-width: 1; }
.jig, .small-jig { fill: none; stroke: var(--paper); stroke-width: 6; stroke-linecap: round; stroke-linejoin: round; }
.imposter-body, .prawn-tail path, .rotating-imposter > path { fill: rgba(232,149,44,.84); stroke: var(--signal-amber); stroke-width: 2; }
.legs path, .rotating-imposter .legs { fill: none; stroke: var(--signal-amber); stroke-width: 2.5; stroke-linecap: round; }
.gulp-body, .gulp-tail, .rotating-gulp path { fill: rgba(184,212,74,.73); stroke: var(--signal-chart); stroke-width: 2; }
.motes { fill: var(--chart-ink); opacity: .38; animation: drift 18s linear infinite; }
.prawn-tail, .bait-imposter .legs { transform-origin: 180px -68px; animation: breathe 3s ease-in-out infinite; }
.gulp-tail { transform-origin: 180px 0; animation: breathe 5s ease-in-out infinite; }

.section-intro { display: grid; grid-template-columns: minmax(12rem, .4fr) minmax(20rem, 1fr); column-gap: 2rem; }
.section-intro .eyebrow { grid-row: 1 / span 2; }
.section-intro p:last-child { max-width: 60ch; color: var(--paper); font-size: 1.08rem; }
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .4s ease, transform .4s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

.material-grid { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 5rem; border-top: 1px solid var(--chart-ink); overflow: hidden; }
.material-grid article { padding: 2rem clamp(1rem, 2vw, 2rem) 0; border-right: 1px solid var(--chart-ink); }
.material-grid article:first-child { padding-left: 0; }
.material-grid article:last-child { border-right: 0; padding-right: 0; }
.material-tag.pvc { color: var(--chart-ink); }.material-tag.gulp { color: var(--signal-chart); }.material-tag.imposter { color: var(--signal-amber); }
.material-slab { height: 150px; margin: 1.8rem 0; border-radius: 55% 38% 44% 52%; position: relative; overflow: visible; border: 1px solid currentColor; }
.pvc-slab { color: var(--chart-ink); background: rgba(94,147,163,.15); }
.gulp-slab { color: var(--signal-chart); background: rgba(184,212,74,.15); box-shadow: 0 0 50px rgba(184,212,74,.13); }
.tpe-slab { color: var(--signal-amber); background: rgba(232,149,44,.15); }
.material-slab i, .material-slab b { position: absolute; width: 8px; height: 8px; border-radius: 50%; background: currentColor; left: 22%; top: 28%; box-shadow: 64px 38px currentColor, 128px -2px currentColor, 176px 62px currentColor; animation: jitter 3s ease-in-out infinite; }
.material-slab i:nth-child(2) { left: 37%; top: 60%; animation-delay: -.8s; }.material-slab i:nth-child(3) { left: 62%; top: 35%; animation-delay: -1.5s; }.material-slab i:nth-child(4) { left: 72%; top: 72%; animation-delay: -2.2s; }
.gulp-slab b { left: 90%; top: 35%; opacity: .6; animation: scent 4s linear infinite; box-shadow: none; }
.gulp-slab b:nth-of-type(2) { top: 58%; animation-delay: -1.3s; }.gulp-slab b:nth-of-type(3) { top: 74%; animation-delay: -2.6s; }
.instrument { color: var(--chart-ink); border-top: 1px solid rgba(94,147,163,.45); padding-top: .9rem; }

.posture-controls, .picker-control { margin: 3rem 0 1.5rem; max-width: 580px; }
label { display: block; color: var(--paper); font: 500 .875rem/1.4 "IBM Plex Mono", ui-monospace, monospace; text-transform: uppercase; letter-spacing: .05em; }
label > span:first-of-type { float: right; color: var(--chart-ink); }
input[type="range"] { width: 100%; accent-color: var(--paper); margin: 1rem 0 .3rem; }
.scale { display: flex; justify-content: space-between; color: var(--chart-ink); }
.posture-panels { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.posture-panels figure { margin: 0; border-top: 1px solid var(--chart-ink); padding-top: 1rem; }
.posture-panels figcaption { display: flex; align-items: center; gap: .6rem; font: 500 .75rem/1.4 "IBM Plex Mono", ui-monospace, monospace; letter-spacing: .08em; }
.posture-panels figcaption strong { margin-left: auto; color: var(--paper); font-size: 1.5rem; }
.amber-dot, .chart-dot { width: 8px; height: 8px; border-radius: 50%; }.amber-dot { background: var(--signal-amber); }.chart-dot { background: var(--signal-chart); }
.vision-cone { fill: rgba(196,177,145,.08); stroke: rgba(94,147,163,.5); }
.fluke path { fill: rgba(196,177,145,.28); stroke: var(--substrate); }.fluke circle { fill: var(--paper); }
.small-jig { stroke-width: 4; }.rotating-imposter, .rotating-gulp { transform-origin: 9px 0; transition: transform .24s cubic-bezier(.4,0,.2,1); }
.model-note { color: var(--chart-ink); margin-top: 2rem; }

.attrition-layout { margin-top: 4rem; display: grid; grid-template-columns: .7fr 1.3fr; gap: 5rem; align-items: center; }
.bait-stacks { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; }
.bait-stacks > div { border-top: 1px solid var(--chart-ink); padding-top: 1rem; }
.bait-stacks > div > span, .cost-output > p { font: 500 .75rem/1.4 "IBM Plex Mono", ui-monospace, monospace; letter-spacing: .1em; color: var(--paper); }
.stack { min-height: 155px; display: flex; gap: 8px; align-items: end; margin: 1.5rem 0; }
.stack i { display: block; width: 22px; height: 95px; border-radius: 60% 40% 45% 55%; background: currentColor; opacity: .82; transform-origin: bottom; transition: transform .24s ease, height .24s ease, opacity .24s ease; }
.amber-stack { color: var(--signal-amber); }.chart-stack { color: var(--signal-chart); }
.bait-stacks strong { display: block; color: var(--paper); font: 500 2.25rem/1 "IBM Plex Mono", ui-monospace, monospace; }
.bait-stacks small { color: var(--chart-ink); font: .75rem "IBM Plex Mono", ui-monospace, monospace; text-transform: uppercase; }

.cost-grid { margin-top: 4rem; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--chart-ink); border-left: 1px solid var(--chart-ink); }
.cost-grid label { min-height: 105px; padding: 1.2rem; border-right: 1px solid var(--chart-ink); border-bottom: 1px solid var(--chart-ink); display: flex; flex-direction: column; justify-content: space-between; color: var(--substrate); }
.cost-grid input { width: 100%; color: var(--paper); background: rgba(11,30,45,.35); border: 0; border-bottom: 1px solid var(--chart-ink); padding: .45rem; font: 500 1.5rem/1 "IBM Plex Mono", ui-monospace, monospace; }
.cost-grid label > span { display: flex; align-items: center; gap: .5rem; float: none; }
.cost-output { margin-top: 2rem; padding-top: 1rem; border-top: 1px solid var(--chart-ink); }
.cost-output > div { display: flex; gap: 3rem; font: 500 1.5rem/1.4 "IBM Plex Mono", ui-monospace, monospace; }
.cost-output strong { display: block; font-size: 2.25rem; }.amber { color: var(--signal-amber); }.chart { color: var(--signal-chart); }

.rig-diagram { max-width: 940px; margin: 3rem auto 0; }
.leader, .hook, .callout { fill: none; stroke: var(--paper); stroke-width: 2; }.knot { fill: var(--paper); }
.teaser path, .bucktail path { fill: rgba(232,149,44,.68); stroke: var(--signal-amber); stroke-width: 2; }

.forage-grid { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 4rem; border-top: 1px solid var(--chart-ink); border-left: 1px solid var(--chart-ink); }
.forage-grid > div { min-height: 190px; padding: 1.5rem; border-right: 1px solid var(--chart-ink); border-bottom: 1px solid var(--chart-ink); display: flex; flex-direction: column; }
.forage-icon { color: var(--paper); font: 400 3.5rem/1 "IBM Plex Mono", ui-monospace, monospace; margin-bottom: auto; }.forage-icon.shrimp { color: var(--signal-amber); }
.forage-grid strong, .forage-grid small { font: 500 .75rem/1.45 "IBM Plex Mono", ui-monospace, monospace; letter-spacing: .08em; }.forage-grid strong { color: var(--paper); }.forage-grid small { color: var(--chart-ink); }

.unknown-grid { margin-top: 4rem; display: grid; grid-template-columns: 1.15fr .85fr; gap: 5rem; }
.unknown-grid ol { list-style: none; padding: 0; margin: 0; border-top: 1px solid var(--chart-ink); }
.unknown-grid > ol > li { display: grid; grid-template-columns: 3rem 1fr; gap: 1rem; padding: 1.3rem 0; border-bottom: 1px solid var(--chart-ink); color: var(--paper); }
.unknown-grid > ol > li span { color: var(--chart-ink); font: .875rem "IBM Plex Mono", ui-monospace, monospace; }
.unknown-grid aside { padding-left: 2rem; border-left: 1px solid var(--chart-ink); }
.unknown-grid ul { padding-left: 1.2rem; }.unknown-grid li::marker { color: var(--chart-ink); }
.field-note { margin-top: 2rem; padding-top: 1rem; border-top: 1px solid var(--chart-ink); color: var(--chart-ink); }
.closing-line {
  max-width: 19ch;
  margin: 7rem 0 0 auto;
  color: var(--paper);
  font: 700 clamp(2.25rem, 5.5vw, 4.8rem)/1 "Archivo", "Arial Black", sans-serif;
  letter-spacing: -.025em;
}

.sources { padding-bottom: 12rem; }
.sources h2 { margin-bottom: 3rem; }
.sources ol { list-style: none; counter-reset: source; padding: 0; border-top: 1px solid var(--chart-ink); }
.sources li { counter-increment: source; display: grid; grid-template-columns: 2rem minmax(200px,.8fr) 1.2fr; gap: 1rem; padding: 1.1rem 0; border-bottom: 1px solid var(--chart-ink); font-size: .9rem; }
.sources li::before { content: counter(source, decimal-leading-zero); color: var(--chart-ink); font: .75rem "IBM Plex Mono", ui-monospace, monospace; }
.sources li span { color: var(--chart-ink); }
.evidence-key { display: grid; grid-template-columns: repeat(3,1fr); gap: 2rem; margin-top: 3rem; }
.evidence-key p { font-size: .85rem; }.evidence-key b { display: block; color: var(--paper); font: .75rem "IBM Plex Mono", ui-monospace, monospace; letter-spacing: .08em; }

@keyframes drift { to { transform: translateX(80px); } }
@keyframes breathe { 50% { transform: rotate(5deg); } }
@keyframes jitter { 50% { transform: translate(3px,-2px); } }
@keyframes scent { 0% { transform: translateX(0); opacity: .8; } 100% { transform: translateX(130px); opacity: 0; } }

@media (max-width: 850px) {
  .hero { grid-template-columns: 1fr; padding-top: 8rem; }
  .hero-scene { max-width: 680px; }
  .section-intro { grid-template-columns: 1fr; }
  .section-intro .eyebrow { grid-row: auto; }
  .material-grid, .posture-panels, .attrition-layout, .unknown-grid { grid-template-columns: 1fr; }
  .material-grid article { border-right: 0; border-bottom: 1px solid var(--chart-ink); padding: 2rem 0; }
  .cost-grid, .forage-grid { grid-template-columns: repeat(2,1fr); }
  .unknown-grid { gap: 3rem; }.unknown-grid aside { border-left: 0; padding-left: 0; }
}

@media (max-width: 560px) {
  .story-section, .hero { width: min(100% - 2rem, 1180px); padding-block: 6rem; }
  .hero { padding-top: 7.5rem; }
  h1 { font-size: 3.5rem; }
  .site-head span { display: none; }
  .hypothesis { grid-template-columns: 1fr; }
  .material-grid { margin-top: 3rem; }
  .bait-stacks, .cost-grid, .forage-grid, .evidence-key { grid-template-columns: 1fr; }
  .cost-output > div { flex-direction: column; gap: 1rem; }
  .sources li { grid-template-columns: 2rem 1fr; }.sources li span { grid-column: 2; }
  .substrate { height: 60px; }
  .depth { left: 1rem; right: auto; bottom: .8rem; }
  .posture-panels { gap: 3rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .reveal { opacity: 1; transform: none; }
}