/* ==========================================================================
   Grain by Grain: design tokens + chassis.
   Cinematic-family skin (pattern inherited from auraofintelligence.github.io
   and right-place-right-time): deep ink base, self-hosted variable fonts,
   glass cards, reveal-on-scroll. Palette and voice are the sand ladder's own:
   sun-gold lantern light, bay teal, dusk violet for the Screen lane.
   ========================================================================== */

@font-face {
  font-family: "Archivo Var";
  src: url("../fonts/archivo-var.woff2") format("woff2-variations");
  font-weight: 100 900;
  font-stretch: 62% 125%;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono Var";
  src: url("../fonts/jetbrains-mono-var.woff2") format("woff2-variations");
  font-weight: 100 800;
  font-display: swap;
}

:root {
  --void: #05070b;
  --deep: #0b1220;
  --ink: #0e1826;
  --sun: #ffcf6e;
  --sun-soft: #ffe6b0;
  --bay: #2be3c2;
  --bay-deep: #0c4a45;
  --dusk: #8a63ff;
  --amethyst: #c9a6ff;
  --ochre: #ff8a3d;
  --text: #f7f4ec;
  --muted: #bfc5d2;
  --line: rgba(255, 207, 110, 0.24);
  --glass: rgba(22, 26, 40, 0.55);
  --known: #4cc38a;
  --modelled: #6ea8fe;
  --disputed: #e6c229;
  --speculative: #ff7eb6;
  --fictional: #b197fc;
  --max: 1240px;
  --radius: 18px;
  --radius-sm: 10px;
  --font-display: "Archivo Var", ui-sans-serif, system-ui, sans-serif;
  --font-body: "Archivo Var", ui-sans-serif, system-ui, sans-serif;
  --font-mono: "JetBrains Mono Var", Consolas, monospace;
  --ease-out: cubic-bezier(.16, 1, .3, 1);
  --dur-fast: .2s;
  --dur-med: .5s;
  --dur-slow: .9s;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; width: 100%; max-width: 100%; overflow-x: hidden; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  width: 100%;
  max-width: 100%;
  min-height: 100vh;
  color: var(--text);
  font-family: var(--font-body);
  font-weight: 440;
  line-height: 1.65;
  background:
    radial-gradient(ellipse 60rem 34rem at 12% -6%, rgba(43, 227, 194, .12), transparent),
    radial-gradient(ellipse 64rem 38rem at 92% 2%, rgba(138, 99, 255, .13), transparent),
    radial-gradient(ellipse 84rem 52rem at 50% 116%, rgba(255, 178, 90, .17), transparent),
    linear-gradient(180deg, #0c1322 0%, #080d18 40%, var(--void) 100%);
  background-attachment: fixed;
  overflow-x: hidden;
  -webkit-text-size-adjust: 100%;
  touch-action: manipulation;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    linear-gradient(90deg, rgba(255, 207, 110, .045) 1px, transparent 1px),
    linear-gradient(0deg, rgba(255, 207, 110, .045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(0deg, rgba(0,0,0,.8), rgba(0,0,0,.05) 70%);
}
::selection { background: var(--sun); color: #201200; }
:focus-visible { outline: 2px solid var(--sun); outline-offset: 3px; }
a { color: inherit; }
img { max-width: 100%; height: auto; display: block; }
main, section, article, div, p, h1, h2, h3, span, a { min-width: 0; }
.skip-link { position: absolute; left: 1rem; top: -5rem; z-index: 100; background: var(--sun); color: #201200; padding: .7rem 1rem; border-radius: 4px; font-weight: 900; text-decoration: none; }
.skip-link:focus { top: 1rem; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .75rem 1.25rem;
  padding: .8rem clamp(1rem, 4vw, 3rem);
  border-bottom: 1px solid transparent;
  background: linear-gradient(180deg, rgba(5, 7, 11, .6), rgba(5, 7, 11, 0));
  transition: background var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out), padding var(--dur-fast) var(--ease-out);
}
.site-header.is-condensed {
  padding-top: .55rem;
  padding-bottom: .55rem;
  border-bottom-color: var(--line);
  background: rgba(8, 11, 18, .84);
  backdrop-filter: blur(20px) saturate(1.3);
  -webkit-backdrop-filter: blur(20px) saturate(1.3);
}
.brand { display: inline-flex; align-items: center; gap: .7rem; text-decoration: none; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 2.85rem;
  height: 2.85rem;
  border: 1px solid rgba(255, 207, 110, .55);
  border-radius: 50%;
  background: radial-gradient(circle at 38% 30%, var(--sun-soft) 0%, var(--ochre) 46%, #4a2a10 84%);
  box-shadow: 0 0 30px rgba(255, 178, 90, .45), inset 0 0 14px rgba(255, 255, 255, .25);
}
.brand-text { display: grid; font-size: .74rem; line-height: 1.25; color: var(--muted); font-family: var(--font-mono); font-weight: 500; letter-spacing: .04em; text-transform: uppercase; }
.brand-text strong { color: white; font-family: var(--font-display); font-size: .95rem; font-weight: 850; letter-spacing: .01em; text-transform: none; }
.site-nav { display: flex; align-items: center; justify-content: flex-end; gap: .15rem; color: var(--muted); font-size: .86rem; font-weight: 620; line-height: 1.15; min-width: 0; }
.site-nav a { position: relative; padding: .55rem .72rem; border-radius: 999px; text-decoration: none; cursor: pointer; white-space: nowrap; letter-spacing: .015em; transition: color var(--dur-fast), background var(--dur-fast); }
.site-nav a:hover { color: white; background: rgba(255, 178, 90, .16); }
.site-nav a[aria-current="page"] { color: white; background: rgba(255, 178, 90, .24); box-shadow: inset 0 0 0 1px var(--line); }

/* ---------- Buttons ---------- */
.button { display: inline-flex; justify-content: center; align-items: center; gap: .55rem; min-height: 2.85rem; padding: .8rem 1.45rem; border-radius: 999px; text-decoration: none; border: 1px solid transparent; font-weight: 760; cursor: pointer; letter-spacing: .015em; transition: transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out), background var(--dur-fast), border-color var(--dur-fast); }
.button:hover { transform: translateY(-2px); }
.button:active { transform: translateY(0); }
.button-primary { background: linear-gradient(135deg, var(--sun), var(--ochre) 60%, var(--dusk)); color: #1a0e05; box-shadow: 0 8px 32px rgba(255, 207, 110, .3); }
.button-primary:hover { box-shadow: 0 14px 44px rgba(255, 207, 110, .42); }
.button-secondary { border-color: var(--line); background: rgba(255,255,255,.06); color: white; backdrop-filter: blur(8px); }
.button-secondary:hover { border-color: rgba(43, 227, 194, .6); background: rgba(43, 227, 194, .1); }

/* ---------- Hero ---------- */
.hero { position: relative; min-height: calc(100vh - 5rem); display: grid; align-items: center; padding: clamp(4rem, 8vw, 7rem) clamp(1rem, 4vw, 3rem) clamp(2rem, 5vw, 4rem); overflow: hidden; }
.hero-image { position: absolute; inset: 0; z-index: -2; }
.hero-image img { width: 100%; height: 100%; object-fit: cover; opacity: .38; filter: saturate(1.15) contrast(1.05); }
.hero-image::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(5,7,11,.94) 0%, rgba(11,18,32,.7) 48%, rgba(11,18,32,.34) 100%), linear-gradient(0deg, rgba(5,7,11,.96), transparent 48%); }
.hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -1; }
.hero-content { width: min(100%, var(--max)); margin: 0 auto; }
.eyebrow { margin: 0 0 .85rem; color: var(--sun); font-family: var(--font-mono); font-size: .8rem; font-weight: 640; letter-spacing: .22em; text-transform: uppercase; }
h1, h2, h3 { letter-spacing: -.005em; }
h1, h2 { margin: 0; font-family: var(--font-display); font-weight: 860; line-height: .96; text-wrap: balance; text-shadow: 0 0 44px rgba(255, 178, 90, .3); }
h1 { max-width: 16ch; font-size: clamp(2.6rem, 7vw, 6.2rem); }
h2 { font-size: clamp(2rem, 4.6vw, 3.8rem); }
h3 { margin: 0 0 .6rem; font-size: 1.15rem; line-height: 1.25; font-weight: 740; }
p { margin-top: 0; }
.hero-copy { max-width: 54rem; margin: 1.25rem 0 0; color: #efe9dd; font-size: clamp(1.05rem, 1.8vw, 1.3rem); }
.hero-actions { display: flex; gap: .8rem; flex-wrap: wrap; margin-top: 1.6rem; }

/* ---------- Sections ---------- */
.section { padding: clamp(3.5rem, 7vw, 6rem) clamp(1rem, 4vw, 3rem); }
.section > * { width: min(100%, var(--max)); margin-left: auto; margin-right: auto; }
.section-heading { display: grid; grid-template-columns: minmax(0, .85fr) minmax(16rem, 1fr); gap: 2rem; align-items: start; margin-bottom: 2rem; }
.section-heading p:not(.eyebrow) { color: var(--muted); font-size: 1.02rem; }

/* ---------- Register chips ---------- */
.chip {
  display: inline-flex;
  align-items: center;
  padding: .22rem .6rem;
  border: 1px solid currentColor;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.chip.known { color: var(--known); }
.chip.modelled { color: var(--modelled); }
.chip.disputed { color: var(--disputed); }
.chip.speculative { color: var(--speculative); }
.chip.fictional { color: var(--fictional); }
.chips { display: flex; flex-wrap: wrap; gap: .4rem; margin: 0 0 .8rem; }
.legend { display: grid; grid-template-columns: repeat(auto-fit, minmax(21rem, 1fr)); gap: 1rem 1.6rem; padding: 0; margin: 1.4rem 0 0; list-style: none; }
.legend li { display: flex; align-items: flex-start; gap: .55rem; color: var(--muted); font-size: .92rem; }
.legend li .chip { flex-shrink: 0; margin-top: .1rem; }

/* ---------- Lane cards ---------- */
.lanes { display: grid; grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr)); gap: .9rem; }
.lane { position: relative; padding: 1.3rem 1.4rem; border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(150deg, rgba(255, 178, 90, .10), rgba(10, 12, 22, .72)); box-shadow: 0 20px 60px rgba(0,0,0,.32); }
.lane.screen { border-color: rgba(138, 99, 255, .4); background: linear-gradient(150deg, rgba(138, 99, 255, .14), rgba(10, 10, 22, .72)); }
.lane h3 { color: #fff; }
.lane.build h3 { color: var(--sun-soft); }
.lane.screen h3 { color: var(--amethyst); }
.lane p { color: var(--muted); margin-bottom: 0; }

/* ---------- Rung feature blocks ---------- */
.rung-block { display: grid; grid-template-columns: minmax(18rem, .8fr) minmax(0, 1fr); gap: 1.6rem; align-items: center; padding: 1.6rem 0; }
.rung-block img { width: 100%; max-height: 26rem; object-fit: cover; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: 0 20px 60px rgba(0,0,0,.35); }
.rung-block h3 { font-family: var(--font-display); font-size: clamp(1.5rem, 2.8vw, 2.2rem); font-weight: 840; margin-bottom: .6rem; }
.rung-block .rung-copy p { color: var(--muted); }
.rung-block .rung-copy p a { color: var(--sun-soft); }
.rung-block:nth-of-type(even) { direction: rtl; }
.rung-block:nth-of-type(even) > * { direction: ltr; }
@media (max-width: 900px) {
  .rung-block { grid-template-columns: 1fr; direction: ltr !important; }
}
.rung-eyebrow { margin: 0 0 .5rem; color: var(--bay); font-family: var(--font-mono); font-size: .76rem; font-weight: 640; letter-spacing: .2em; text-transform: uppercase; }

/* ---------- Walls ---------- */
.walls { list-style: none; margin: 0; padding: 0; display: grid; gap: .9rem; }
.walls li { padding: 1.2rem 1.4rem; border: 1px solid var(--line); border-left: 3px solid var(--sun); border-radius: var(--radius-sm); background: rgba(255, 255, 255, .04); color: var(--muted); }
.walls strong { color: #fff; }
.walls .to-screen { color: var(--amethyst); font-weight: 640; }

/* ---------- Footer ---------- */
.site-footer { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1.2rem; padding: 2rem clamp(1rem, 4vw, 3rem); border-top: 1px solid var(--line); background: rgba(6, 8, 13, .78); }
.site-footer > div { display: grid; gap: .3rem; max-width: 40rem; }
.site-footer p { margin: 0; font-size: .88rem; color: var(--muted); }
.footer-links { display: flex; flex-wrap: wrap; gap: .55rem; align-items: center; }
.footer-links a { display: inline-grid; place-items: center; min-height: 2.35rem; padding: .45rem .72rem; border: 1px solid rgba(255, 207, 110, .35); border-radius: 999px; background: rgba(255, 207, 110, .08); color: var(--sun-soft); font-weight: 800; font-size: .84rem; text-decoration: none; }
.footer-links a:hover { border-color: rgba(255, 207, 110, .7); background: rgba(255, 207, 110, .16); color: #fff; }

/* ---------- Inner-page hero ---------- */
.page-hero { min-height: min(56vh, 32rem); }
.page-hero h1 { max-width: 15ch; font-size: clamp(2.3rem, 5.6vw, 4.6rem); }

/* ---------- Kintsugi seams (animated) ----------
   Pattern shared with the P4A Native Nations chapter: each seam is a unique
   inline-SVG crack. Paths carry pathLength="1" so the draw is a plain
   dashoffset transition; once drawn, a small light keeps flowing along the
   seam. Fully drawn and static without JS or under reduced motion. The gold
   is decoration, never a gate. */
.kintsugi-seam { position: relative; width: min(100%, var(--max)); height: 2.6rem; margin: clamp(1.2rem, 3.4vw, 2.2rem) auto; border: 0; background: none; }
.kintsugi-seam svg { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; filter: drop-shadow(0 0 6px rgba(255, 207, 110, .45)); }
.kintsugi-seam .seam-path { fill: none; stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; stroke-dasharray: 1; stroke-dashoffset: 1; transition: stroke-dashoffset 1.8s var(--ease-out); }
.kintsugi-seam .seam-branch { stroke-width: 1.4; opacity: .68; transition-duration: .9s; transition-delay: 1.1s; }
.kintsugi-seam.is-drawn .seam-path { stroke-dashoffset: 0; }
.kintsugi-seam .seam-light { fill: none; stroke: #fff7e6; stroke-width: 2.6; stroke-linecap: round; stroke-dasharray: .05 .95; stroke-dashoffset: 1; opacity: 0; transition: opacity .8s ease 1.8s; }
.kintsugi-seam.is-drawn .seam-light { opacity: .75; animation: seam-flow 8s linear infinite; animation-delay: 2s; }
@keyframes seam-flow { from { stroke-dashoffset: 1; } to { stroke-dashoffset: -1; } }
html:not(.js) .kintsugi-seam .seam-path { stroke-dashoffset: 0; transition: none; }
html:not(.js) .kintsugi-seam .seam-light { display: none; }
@media (prefers-reduced-motion: reduce) {
  .kintsugi-seam .seam-path { stroke-dashoffset: 0; transition: none; }
  .kintsugi-seam .seam-light { display: none; }
}

/* ---------- Stat panels ---------- */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr)); gap: .9rem; margin: 1.4rem 0; }
.stat { padding: 1.15rem 1.3rem; border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(160deg, rgba(255, 178, 90, .08), rgba(10, 12, 22, .7)); }
.stat strong { display: block; color: var(--sun-soft); font-family: var(--font-mono); font-size: clamp(1.5rem, 2.6vw, 2.1rem); font-weight: 760; letter-spacing: -.01em; }
.stat span { color: var(--muted); font-size: .9rem; }
.stat.contrast { border-color: rgba(43, 227, 194, .4); background: linear-gradient(160deg, rgba(43, 227, 194, .1), rgba(10, 12, 22, .7)); }
.stat.contrast strong { color: var(--bay); }

/* ---------- Receipts (source trail) ---------- */
.receipts { margin: 1.2rem 0 0; padding: 1rem 1.3rem; border: 1px dashed var(--line); border-radius: var(--radius-sm); background: rgba(255, 255, 255, .03); }
.receipts h3 { color: var(--sun-soft); font-size: .92rem; font-family: var(--font-mono); text-transform: uppercase; letter-spacing: .12em; }
.receipts ul { margin: 0; padding-left: 1.1rem; color: var(--muted); font-size: .9rem; display: grid; gap: .3rem; }
.receipts a { color: var(--sun-soft); }

/* ---------- Comparison table ---------- */
.table-scroll { overflow-x: auto; margin: 1.2rem 0; }
.data-table { width: 100%; min-width: 40rem; border-collapse: collapse; font-size: .92rem; }
.data-table th { text-align: left; padding: .6rem .8rem; color: var(--sun-soft); font-family: var(--font-mono); font-size: .74rem; text-transform: uppercase; letter-spacing: .1em; border-bottom: 1px solid var(--line); }
.data-table td { padding: .6rem .8rem; color: var(--muted); border-bottom: 1px solid rgba(255, 207, 110, .12); vertical-align: top; }
.data-table td:first-child { color: var(--text); font-weight: 620; }

/* ---------- Rung prev/next nav ---------- */
.rung-nav { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .8rem; width: min(100%, var(--max)); margin: 0 auto; padding: 0 clamp(1rem, 4vw, 3rem) 2.6rem; }
.rung-nav a { display: inline-flex; align-items: center; gap: .5rem; min-height: 2.75rem; padding: .6rem 1.1rem; border: 1px solid var(--line); border-radius: 999px; background: rgba(255, 255, 255, .05); color: var(--sun-soft); text-decoration: none; font-weight: 700; font-size: .9rem; transition: border-color var(--dur-fast), background var(--dur-fast); }
.rung-nav a:hover { border-color: rgba(255, 207, 110, .7); background: rgba(255, 207, 110, .12); color: #fff; }

/* ---------- Evidence-tiered periodic table ---------- */
.periodic { display: grid; grid-template-columns: repeat(18, minmax(0, 1fr)); gap: 3px; min-width: 46rem; padding: .2rem; }
.el { aspect-ratio: 1; display: grid; place-content: center; gap: 1px; padding: 0; border: 1px solid transparent; border-radius: 4px; font-family: var(--font-mono); line-height: 1; text-align: center; transition: transform var(--dur-fast) var(--ease-out); }
.el .el-z { font-size: .42rem; opacity: .65; }
.el .el-sym { font-size: .74rem; font-weight: 700; }
.el-local { background: linear-gradient(160deg, var(--sun), var(--ochre)); color: #1a0e05; cursor: pointer; box-shadow: 0 0 12px rgba(255, 207, 110, .3); }
.el-reachable { background: rgba(43, 227, 194, .1); border-color: rgba(43, 227, 194, .5); color: var(--bay); cursor: pointer; }
.el-context { background: rgba(255, 255, 255, .03); border-color: rgba(255, 255, 255, .06); color: var(--muted); opacity: .42; }
.el-pointer .el-sym { font-size: .46rem; }
.el-local:hover, .el-reachable:hover { transform: translateY(-2px); }
.el.is-picked { outline: 2px solid #fff; outline-offset: 1px; }
.el-detail { margin-top: 1.2rem; padding: 1.2rem 1.4rem; min-height: 9rem; border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(150deg, rgba(255, 178, 90, .08), rgba(10, 12, 22, .72)); }
.el-detail h3 { color: #fff; margin-bottom: .5rem; }
.el-detail p:last-child { margin-bottom: 0; color: var(--muted); }
.el-key { display: flex; flex-wrap: wrap; gap: .8rem 1.4rem; margin: 1.2rem 0 0; padding: 0; list-style: none; }
.el-key li { display: flex; align-items: center; gap: .5rem; color: var(--muted); font-size: .9rem; }
.el-swatch { width: 1rem; height: 1rem; border-radius: 3px; border: 1px solid transparent; flex: 0 0 auto; }
.el-swatch.local { background: linear-gradient(160deg, var(--sun), var(--ochre)); }
.el-swatch.reachable { background: rgba(43, 227, 194, .12); border-color: rgba(43, 227, 194, .6); }
.el-swatch.context { background: rgba(255, 255, 255, .05); border-color: rgba(255, 255, 255, .12); }

/* ---------- To-top button ---------- */
.to-top {
  position: fixed;
  right: clamp(1rem, 3vw, 2rem);
  bottom: clamp(1rem, 3vw, 2rem);
  z-index: 60;
  display: grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  border: 1px solid rgba(255, 207, 110, .5);
  border-radius: 50%;
  background: rgba(14, 24, 38, .82);
  color: var(--sun);
  font-size: 1.2rem;
  cursor: pointer;
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 8px 28px rgba(0, 0, 0, .4);
  transition: opacity var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out), background var(--dur-fast), border-color var(--dur-fast);
}
.to-top.is-visible { opacity: 1; transform: none; pointer-events: auto; }
.to-top:hover { background: rgba(255, 207, 110, .16); border-color: var(--sun); }

/* ---------- Site map: the growth tree ---------- */
.map-legend { display: flex; flex-wrap: wrap; gap: 1rem; margin: 0 0 2rem; padding: 0; list-style: none; }
.map-legend li { display: flex; align-items: center; gap: .5rem; color: var(--muted); font-size: .88rem; }
.map-dot { width: .8rem; height: .8rem; border-radius: 50%; flex: 0 0 auto; }
.map-dot.live { background: var(--bay); box-shadow: 0 0 10px rgba(43, 227, 194, .6); }
.map-dot.building { background: var(--sun); box-shadow: 0 0 10px rgba(255, 207, 110, .6); }
.map-dot.surveyed { background: var(--dusk); }
.map-dot.chapter { background: transparent; border: 1.5px solid var(--muted); }

.map-rung { margin: 0 0 1.4rem; border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(155deg, rgba(255, 178, 90, .06), rgba(10, 12, 22, .66)); overflow: hidden; }
.map-rung > summary { list-style: none; cursor: pointer; padding: 1.1rem 1.3rem; display: grid; grid-template-columns: auto 1fr auto; gap: .4rem 1rem; align-items: center; }
.map-rung > summary::-webkit-details-marker { display: none; }
.map-rung > summary::after { content: "+"; font-family: var(--font-mono); color: var(--sun); font-size: 1.3rem; }
.map-rung[open] > summary::after { content: "\2212"; }
.map-rung > summary h3 { margin: 0; font-size: 1.15rem; color: #fff; }
.map-rung > summary .map-eyebrow { grid-column: 1 / -1; color: var(--bay); font-family: var(--font-mono); font-size: .72rem; letter-spacing: .16em; text-transform: uppercase; }
.map-count { color: var(--muted); font-family: var(--font-mono); font-size: .8rem; }
.map-pages { list-style: none; margin: 0; padding: 0 1.3rem 1.2rem; display: grid; gap: .1rem; }
.map-pages li { display: grid; grid-template-columns: auto 1fr; gap: .7rem; align-items: baseline; padding: .5rem .2rem; border-top: 1px solid rgba(255, 207, 110, .1); }
.map-pages li a { color: var(--sun-soft); text-decoration: none; font-weight: 620; }
.map-pages li a:hover { color: #fff; }
.map-pages li span.map-desc { color: var(--muted); font-size: .88rem; }
.map-pages li em { font-style: normal; color: var(--text); }
/* Local links stay gold; external links (other repos / outside sites) turn teal with an arrow. */
.map-pages a[href^="http"] { color: var(--bay); }
.map-pages a[href^="http"]:hover { color: #fff; }
.map-pages a[href^="http"]::after { content: " \2197"; font-family: var(--font-mono); font-size: .82em; opacity: .85; }
.map-linknote { max-width: 60ch; margin: -1rem 0 2rem; font-size: .9rem; color: var(--muted); }
.map-linknote .local-key { color: var(--sun-soft); font-weight: 700; }
.map-linknote .ext-key { color: var(--bay); font-weight: 700; }

/* ---------- Full-spectrum alchemy ---------- */
.alchemy-viz { margin: 1.6rem 0 0; padding: 1.4rem; border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(160deg, rgba(43, 227, 194, .06), rgba(10, 12, 22, .72)); }
.alchemy-viz svg { width: 100%; height: auto; display: block; }

.spectrum-filter { display: flex; flex-wrap: wrap; gap: .5rem; margin: 1.6rem 0 1.2rem; }
.spectrum-filter button { min-height: 2.5rem; padding: .5rem 1rem; border: 1px solid var(--line); border-radius: 999px; background: rgba(255, 255, 255, .05); color: var(--muted); font: 600 .84rem var(--font-mono); letter-spacing: .04em; cursor: pointer; transition: border-color var(--dur-fast), background var(--dur-fast), color var(--dur-fast); }
.spectrum-filter button:hover { color: #fff; border-color: rgba(255, 207, 110, .5); }
.spectrum-filter button[aria-pressed="true"] { color: #1a0e05; background: linear-gradient(135deg, var(--sun), var(--ochre)); border-color: transparent; }

.stream { margin: 0 0 1rem; border: 1px solid var(--line); border-left: 3px solid var(--sun); border-radius: var(--radius-sm); background: rgba(255, 255, 255, .03); overflow: hidden; }
.stream[hidden] { display: none; }
.stream-head { padding: 1rem 1.3rem; display: flex; flex-wrap: wrap; align-items: baseline; gap: .3rem .8rem; }
.stream-head h3 { margin: 0; font-size: 1.15rem; color: #fff; }
.stream-head .formula { font-family: var(--font-mono); font-size: .85rem; color: var(--bay); }
.stream-head p { flex-basis: 100%; margin: .3rem 0 0; color: var(--muted); font-size: .92rem; }
.chain-list { list-style: none; margin: 0; padding: 0 1.3rem 1.1rem; display: grid; gap: .55rem; }
.chain { display: grid; grid-template-columns: 1fr auto; gap: .3rem .8rem; align-items: start; padding: .7rem .9rem; border: 1px solid rgba(255, 207, 110, .14); border-radius: 8px; background: rgba(10, 12, 22, .5); }
.chain .flow { font-size: .95rem; }
.chain .flow .arrow { color: var(--sun); font-family: var(--font-mono); padding: 0 .35rem; }
.chain .flow .product { color: #fff; font-weight: 640; }
.chain .use { grid-column: 1 / -1; color: var(--muted); font-size: .86rem; }
.chain .loopback { grid-column: 1 / -1; margin-top: .2rem; padding-top: .4rem; border-top: 1px dashed rgba(43, 227, 194, .3); color: var(--bay); font-size: .84rem; }
.chain .loopback::before { content: "\21ba  "; font-weight: 800; }

/* ---------- Closed-loop cards ---------- */
.loop-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); gap: 1rem; margin-top: 1.4rem; }
.loop-card { padding: 1.2rem 1.3rem; border: 1px solid rgba(43, 227, 194, .3); border-radius: var(--radius); background: linear-gradient(155deg, rgba(43, 227, 194, .1), rgba(10, 12, 22, .74)); }
.loop-card h3 { color: var(--bay); font-size: 1.05rem; }
.loop-card ol, .loop-card ul { margin: .6rem 0 0; padding-left: 1.1rem; color: var(--muted); font-size: .88rem; display: grid; gap: .25rem; }
.loop-card .loop-mark { font-family: var(--font-mono); color: var(--bay); font-size: 1.4rem; float: right; }

/* ---------- Reveal-on-scroll ---------- */
.reveal { opacity: 0; transform: translateY(24px); filter: blur(5px); transition: opacity var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out), filter var(--dur-slow) var(--ease-out); }
.reveal.is-visible { opacity: 1; transform: none; filter: none; }
@media (prefers-reduced-motion: reduce) { .reveal, .reveal.is-visible { opacity: 1; transform: none; filter: none; transition: none; } }
html:not(.js) .reveal { opacity: 1; transform: none; filter: none; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .site-nav { display: none; }
  .section-heading { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .site-header { padding: .65rem 1rem; }
  .hero { min-height: auto; padding: 2.4rem 1rem 2.6rem; }
  h1 { max-width: 100%; font-size: clamp(2.1rem, 9vw, 2.9rem); }
  h2 { font-size: clamp(1.8rem, 9vw, 2.6rem); }
  .hero-actions { display: grid; grid-template-columns: 1fr; }
  .button { width: 100%; }
  .site-footer { flex-direction: column; }
  .footer-links { justify-content: flex-start; }
}