/* Viridian Intelligence — site styles
   One system, three strata: above (sky), across (soil), below (stone). */

@property --accent { syntax: "<color>"; inherits: true; initial-value: #6ff0c4; }
@property --bg { syntax: "<color>"; inherits: true; initial-value: #04090b; }

:root {
  color-scheme: dark;
  --bg: #04090b;
  --ink: #eaf1ee;
  --soft: #b9c7c2;
  --muted: #8a9b95;
  --dim: #56665f;
  --line: rgba(234, 241, 238, 0.11);
  --line-strong: rgba(234, 241, 238, 0.22);
  --panel: rgba(7, 13, 13, 0.62);

  --brand: #059669;
  --viridian: #40826d;
  --signal: #6ff0c4;
  --sky: #86dcf2;
  --soil: #b4ea7e;
  --stone: #e79a6b;
  --alert: #ffb84d;
  --hostile: #ff6a55;
  --accent: var(--signal);

  --sans: "Geist", "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "Geist Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --serif: "Instrument Serif", "Iowan Old Style", Georgia, serif;

  --gutter: clamp(20px, 5vw, 76px);
  --max: 1320px;
  --ease: cubic-bezier(0.2, 0.7, 0.1, 1);
}

body[data-layer="sky"]   { --accent: var(--sky);    --bg: #040a0e; }
body[data-layer="soil"]  { --accent: var(--soil);   --bg: #050a06; }
body[data-layer="stone"] { --accent: var(--stone);  --bg: #0b0705; }
body[data-layer="over"]  { --accent: var(--signal); --bg: #04090b; }

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.55;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  transition: --accent 0.9s linear, --bg 0.9s linear;
}
img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
h1, h2, h3, h4, p, ul, ol, figure, dl, dt, dd { margin: 0; padding: 0; }
ul, ol { list-style: none; }
::selection { background: var(--accent); color: #04110d; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }

.skip { position: absolute; left: -999px; top: 8px; z-index: 100; background: var(--ink); color: #04110d; padding: 10px 14px; border-radius: 6px; }
.skip:focus { left: 8px; }

/* ───────── Backdrop ───────── */
#scene { position: fixed; inset: 0; width: 100%; height: 100lvh; z-index: 0; }
.veil {
  position: fixed; inset: 0; z-index: 1; pointer-events: none;
  background:
    radial-gradient(120% 80% at 50% 45%, transparent 40%, rgba(0, 0, 0, 0.55) 100%),
    linear-gradient(to bottom, rgba(0, 0, 0, 0.35), transparent 18%, transparent 78%, rgba(0, 0, 0, 0.5));
}
.grain {
  position: fixed; inset: -50%; width: 200%; height: 200%; z-index: 2; pointer-events: none; opacity: 0.07;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='220' height='220'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1  0 0 0 0 1  0 0 0 0 1  0 0 0 .9 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}
main, .site-header, .site-footer { position: relative; z-index: 3; }

/* ───────── Type ───────── */
.wrap { width: 100%; max-width: var(--max); margin-inline: auto; padding-left: max(var(--gutter), env(safe-area-inset-left, 0px)); padding-right: max(var(--gutter), env(safe-area-inset-right, 0px)); }
.label {
  font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--accent); display: inline-flex; align-items: center; gap: 12px; white-space: nowrap;
}
.label::before { content: ""; width: 28px; height: 1px; background: currentColor; opacity: 0.7; }
.label.plain::before { display: none; }
.mono { font-family: var(--mono); letter-spacing: 0.08em; }
em, .serif { font-family: var(--serif); font-style: italic; font-weight: 400; letter-spacing: -0.01em; }
.c-sky { color: var(--sky); } .c-soil { color: var(--soil); } .c-stone { color: var(--stone); } .c-accent { color: var(--accent); }

.display {
  font-size: clamp(2.9rem, 8.4vw, 7.9rem); line-height: 0.94; letter-spacing: -0.045em; font-weight: 500;
  text-wrap: balance;
}
.display em { font-size: 1.06em; letter-spacing: -0.03em; padding-right: 0.04em; }
.h2 { font-size: clamp(2.1rem, 5.4vw, 4.6rem); line-height: 0.98; letter-spacing: -0.035em; font-weight: 500; text-wrap: balance; }
.h2 em { font-size: 1.06em; }
.h3 { font-size: clamp(1.15rem, 1.6vw, 1.4rem); line-height: 1.2; letter-spacing: -0.015em; font-weight: 500; }
.lead { font-size: clamp(1.06rem, 1.45vw, 1.32rem); line-height: 1.5; color: var(--soft); max-width: 44em; text-wrap: pretty; }
main p, main h3, main h4 { text-shadow: 0 0 14px var(--bg), 0 0 5px var(--bg), 0 0 2px var(--bg); }
.small { font-size: 0.86rem; color: var(--muted); }
.note { font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; color: var(--muted); text-transform: uppercase; line-height: 1.7; }

/* ───────── Buttons ───────── */
.btn {
  --h: 52px;
  display: inline-flex; align-items: center; gap: 14px; height: var(--h); padding: 0 22px 0 24px;
  font-family: var(--mono); font-size: 12.5px; letter-spacing: 0.14em; text-transform: uppercase; white-space: nowrap;
  border-radius: 999px; border: 1px solid var(--line-strong); position: relative; overflow: hidden;
  transition: border-color 0.3s, color 0.3s, background 0.3s, transform 0.3s var(--ease), box-shadow 0.3s;
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); background: rgba(6, 12, 12, 0.35);
}
.btn .arr { width: 18px; height: 10px; flex: none; transition: transform 0.35s var(--ease); }
.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn:hover .arr { transform: translateX(5px); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #03110c; font-weight: 500; box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 40%, transparent); }
.btn.primary:hover { color: #03110c; box-shadow: 0 0 44px -6px color-mix(in srgb, var(--accent) 70%, transparent); transform: translateY(-1px); }
.btn.sm { --h: 40px; padding: 0 16px 0 18px; font-size: 11px; }
.textlink { font-family: var(--mono); font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--soft); display: inline-flex; gap: 10px; align-items: center; border-bottom: 1px solid var(--line-strong); padding-bottom: 6px; transition: color 0.3s, border-color 0.3s; }
.textlink:hover { color: var(--accent); border-color: var(--accent); }

/* ───────── Header ───────── */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 40;
  transition: background 0.4s, border-color 0.4s, backdrop-filter 0.4s, transform 0.5s var(--ease);
  border-bottom: 1px solid transparent; padding-top: env(safe-area-inset-top, 0px);
}
.site-header.scrolled { background: color-mix(in srgb, var(--bg) 72%, transparent); backdrop-filter: blur(18px) saturate(1.2); -webkit-backdrop-filter: blur(18px) saturate(1.2); border-color: var(--line); }
.site-header .bar { height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 13px; flex: none; }
.brand svg { width: 30px; height: 30px; flex: none; }
.brand .mark-fill { fill: var(--brand); } .brand .mark-line { stroke: var(--brand); }
.brand .wm { font-family: var(--mono); font-size: 12px; letter-spacing: 0.3em; text-transform: uppercase; line-height: 1.25; font-weight: 500; }
.brand .wm span { display: block; color: var(--muted); letter-spacing: 0.3em; font-weight: 400; }
.nav { display: flex; align-items: center; gap: clamp(14px, 2.1vw, 34px); }
.nav a.nl { font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--soft); position: relative; padding: 8px 0; transition: color 0.25s; }
.nav a.nl::after { content: ""; position: absolute; left: 0; right: 0; bottom: 2px; height: 1px; background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform 0.35s var(--ease); }
.nav a.nl:hover, .nav a.nl.on { color: var(--ink); }
.nav a.nl:hover::after, .nav a.nl.on::after { transform: scaleX(1); }
.menu-btn { display: none; width: 46px; height: 46px; border: 1px solid var(--line-strong); border-radius: 50%; align-items: center; justify-content: center; position: relative; z-index: 60; background: rgba(6, 12, 12, 0.4); }
.menu-btn i { position: absolute; width: 18px; height: 1.5px; background: var(--ink); transition: transform 0.35s var(--ease), opacity 0.2s; }
.menu-btn i:nth-child(1) { transform: translateY(-5px); } .menu-btn i:nth-child(2) { transform: translateY(5px); }
.menu-open .menu-btn i:nth-child(1) { transform: rotate(45deg); } .menu-open .menu-btn i:nth-child(2) { transform: rotate(-45deg); }

.drawer {
  position: fixed; inset: 0; z-index: 50; background: color-mix(in srgb, var(--bg) 94%, transparent); backdrop-filter: blur(22px); -webkit-backdrop-filter: blur(22px);
  display: flex; flex-direction: column; justify-content: center; padding: 96px var(--gutter) 40px;
  opacity: 0; visibility: hidden; transition: opacity 0.35s, visibility 0.35s;
}
.menu-open .drawer { opacity: 1; visibility: visible; }
.menu-open .site-header { z-index: 60; background: transparent; border-color: transparent; backdrop-filter: none; -webkit-backdrop-filter: none; }
.drawer a.dl { display: flex; align-items: baseline; gap: 18px; font-size: clamp(2rem, 9vw, 3.2rem); letter-spacing: -0.03em; padding: 10px 0; border-bottom: 1px solid var(--line); opacity: 0; transform: translateY(14px); transition: opacity 0.5s, transform 0.5s var(--ease), color 0.3s; transition-delay: calc(var(--i) * 45ms + 80ms); }
.drawer a.dl small { font-family: var(--mono); font-size: 11px; letter-spacing: 0.2em; color: var(--accent); }
.menu-open .drawer a.dl { opacity: 1; transform: none; }
.drawer .btn { margin-top: 34px; align-self: flex-start; }

/* ───────── Altimeter ───────── */
.alt {
  position: fixed; right: clamp(14px, 2vw, 30px); top: 50%; transform: translateY(-50%); z-index: 30;
  display: flex; flex-direction: column; align-items: flex-end; gap: 14px; pointer-events: none;
  font-family: var(--mono); text-transform: uppercase; opacity: 0; transition: opacity 0.8s 0.6s;
}
.ready .alt { opacity: 1; }
.alt .val { font-size: 12px; letter-spacing: 0.12em; color: var(--ink); text-align: right; line-height: 1.5; }
.alt .val b { display: block; color: var(--accent); font-weight: 500; font-size: 10px; letter-spacing: 0.24em; }
.alt .rule { position: relative; width: 14px; height: min(40vh, 340px); border-right: 1px solid var(--line-strong);
  background: repeating-linear-gradient(to bottom, var(--line-strong) 0 1px, transparent 1px 17px) right / 7px 100% no-repeat; }
.alt .rule::before { content: ""; position: absolute; right: -1px; left: 0; top: var(--surface, 62%); height: 1px; background: var(--ink); opacity: 0.6; }
.alt .pin { position: absolute; right: -5px; top: 0; width: 9px; height: 9px; background: var(--accent); transform: translateY(-50%) rotate(45deg); box-shadow: 0 0 16px var(--accent); transition: top 0.25s linear; }
.alt .stops { position: absolute; right: 24px; top: 0; bottom: 0; width: 90px; }
.alt .stops span { position: absolute; right: 0; transform: translateY(-50%); font-size: 9.5px; letter-spacing: 0.2em; color: var(--dim); transition: color 0.4s; white-space: nowrap; }
.alt .stops span.on { color: var(--accent); }
@media (max-width: 1180px) { .alt { display: none; } }

/* ───────── Reveal ───────── */
.js .rv { opacity: 0; transform: translateY(26px); filter: blur(8px); transition: opacity 1s var(--ease), transform 1.1s var(--ease), filter 1s var(--ease); transition-delay: calc(var(--i, 0) * 90ms); will-change: opacity, transform; }
.js .rv.in { opacity: 1; transform: none; filter: none; }
.js .ln { display: block; overflow: hidden; padding-bottom: 0.12em; margin-bottom: -0.12em; }
.js .ln > span { display: block; transform: translateY(112%); transition: transform 1.25s var(--ease); transition-delay: calc(var(--i, 0) * 110ms + 150ms); }
.js .in .ln > span, .js .ln.in > span { transform: none; }

/* ───────── Sections ───────── */
section { position: relative; }
.sec { padding-block: clamp(110px, 17vh, 220px); }
.sec-head { display: grid; gap: 26px; margin-bottom: clamp(44px, 7vh, 84px); max-width: 980px; }

/* Hero */
.hero { min-height: 100svh; display: flex; flex-direction: column; justify-content: flex-end; padding-top: 130px; padding-bottom: clamp(26px, 5vh, 56px); }
.hero .wrap { display: grid; gap: clamp(26px, 4.4vh, 52px); }
.hero .lead { max-width: 37em; color: var(--ink); opacity: 0.86; }
.hero .cta { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.hero-idx { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); margin-top: clamp(14px, 4vh, 46px); }
.hero-idx a { padding: 20px 20px 6px 0; display: grid; gap: 6px; border-right: 1px solid var(--line); padding-left: 20px; transition: background 0.4s; position: relative; }
.hero-idx a:first-child { padding-left: 0; } .hero-idx a:last-child { border-right: 0; }
.hero-idx a b { font-family: var(--mono); font-weight: 400; font-size: 10.5px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--muted); }
.hero-idx a span { font-size: clamp(1.05rem, 2vw, 1.55rem); letter-spacing: -0.02em; display: flex; align-items: baseline; gap: 10px; }
.hero-idx a span i { font-family: var(--serif); font-size: 1.15em; }
.hero-idx a::after { content: ""; position: absolute; left: 0; right: 0; top: -1px; height: 1px; background: currentColor; transform: scaleX(0); transform-origin: left; transition: transform 0.6s var(--ease); }
.hero-idx a:hover::after { transform: scaleX(1); }
.hero-idx a.c-sky:hover span, .hero-idx a.c-soil:hover span, .hero-idx a.c-stone:hover span { color: currentColor; }
.hero-idx a span { color: var(--ink); transition: color 0.3s; }
.scrollcue { position: absolute; right: var(--gutter); top: 46%; writing-mode: vertical-rl; font-family: var(--mono); font-size: 10px; letter-spacing: 0.3em; text-transform: uppercase; color: var(--muted); display: flex; align-items: center; gap: 14px; }
.scrollcue::after { content: ""; width: 1px; height: 70px; background: linear-gradient(var(--accent), transparent); animation: cue 2.4s var(--ease) infinite; transform-origin: top; }
@keyframes cue { 0% { transform: scaleY(0); } 50% { transform: scaleY(1); transform-origin: top; } 51% { transform-origin: bottom; } 100% { transform: scaleY(0); transform-origin: bottom; } }
@media (max-width: 1180px) { .scrollcue { display: none; } }

/* Thesis */
.thesis .say { font-size: clamp(1.9rem, 5.1vw, 4.5rem); line-height: 1.06; letter-spacing: -0.035em; font-weight: 500; max-width: 17em; }
.thesis .say .w { color: color-mix(in srgb, var(--ink) 17%, transparent); transition: color 0.5s; }
.thesis .say .w.lit { color: var(--ink); }
.thesis .say em .w.lit { color: var(--accent); }
.tri { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; margin-top: clamp(60px, 10vh, 120px); border-top: 1px solid var(--line); }
.tri > div { padding: 28px 28px 0 0; display: grid; gap: 12px; align-content: start; }
.tri > div + div { border-left: 1px solid var(--line); padding-left: 28px; }
.tri .n { font-family: var(--mono); font-size: 11px; letter-spacing: 0.2em; color: var(--accent); }
.tri p { color: var(--soft); font-size: 0.98rem; }

/* Loop */
.loop-grid { display: grid; grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr); gap: clamp(30px, 6vw, 100px); align-items: center; }
.ring { position: relative; aspect-ratio: 1; width: 100%; max-width: 540px; margin-inline: auto; }
.ring svg { width: 100%; height: 100%; overflow: visible; }
.ring .track { fill: none; stroke: var(--line-strong); stroke-width: 1; }
.ring .dash { fill: none; stroke: var(--line); stroke-width: 1; stroke-dasharray: 2 7; animation: spin 60s linear infinite; transform-origin: 50% 50%; }
.ring .prog { fill: none; stroke: var(--accent); stroke-width: 1.6; stroke-linecap: round; transition: stroke-dashoffset 0.9s var(--ease); filter: drop-shadow(0 0 6px var(--accent)); }
@keyframes spin { to { transform: rotate(360deg); } }
.ring .node { position: absolute; transform: translate(-50%, -50%); display: grid; place-items: center; gap: 8px; cursor: pointer; padding: 10px; }
.ring .node i { width: 13px; height: 13px; border: 1px solid var(--soft); transform: rotate(45deg); background: var(--bg); transition: background 0.4s, border-color 0.4s, box-shadow 0.4s, transform 0.4s var(--ease); display: block; }
.ring .node span { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--muted); transition: color 0.3s; position: absolute; white-space: nowrap; }
.ring .node[data-pos="t"] span { bottom: 100%; } .ring .node[data-pos="b"] span { top: 100%; }
.ring .node[data-pos="r"] span { left: 100%; } .ring .node[data-pos="l"] span { right: 100%; }
.ring .node.on i { background: var(--accent); border-color: var(--accent); box-shadow: 0 0 22px var(--accent); transform: rotate(45deg) scale(1.25); }
.ring .node.on span, .ring .node:hover span { color: var(--ink); }
.ring .core { position: absolute; inset: 0; display: grid; place-items: center; text-align: center; pointer-events: none; }
.ring .core .big { font-family: var(--serif); font-style: italic; font-size: clamp(2.2rem, 4.4vw, 3.9rem); line-height: 1; color: var(--ink); }
.ring .core .cap { font-family: var(--mono); font-size: 10px; letter-spacing: 0.3em; text-transform: uppercase; color: var(--muted); margin-top: 10px; }
.steps { display: grid; }
.step { border-top: 1px solid var(--line); padding: 22px 0; cursor: pointer; display: grid; grid-template-columns: 54px 1fr; column-gap: 8px; }
.step:last-child { border-bottom: 1px solid var(--line); }
.step .i { font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em; color: var(--dim); padding-top: 7px; transition: color 0.3s; }
.step h3 { font-size: clamp(1.3rem, 2.3vw, 1.95rem); letter-spacing: -0.025em; font-weight: 500; color: var(--muted); transition: color 0.4s; display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; }
.step h3 small { font-family: var(--serif); font-style: italic; font-size: 0.82em; color: var(--dim); transition: color 0.4s; letter-spacing: 0; }
.step .body { grid-column: 2; display: grid; grid-template-rows: 0fr; transition: grid-template-rows 0.6s var(--ease); }
.step .body > p { overflow: hidden; color: var(--soft); max-width: 34em; }
.step .body > p::before { content: ""; display: block; height: 10px; }
.step.on .body { grid-template-rows: 1fr; }
.step.on h3, .step:hover h3 { color: var(--ink); }
.step.on h3 small { color: var(--accent); }
.step.on .i { color: var(--accent); }

/* Chapters */
.chapter { padding-block: clamp(120px, 20vh, 260px) clamp(90px, 14vh, 180px); }
.ghost {
  position: absolute; left: 50%; top: clamp(40px, 8vh, 110px); transform: translateX(-50%); width: 100%; text-align: center; pointer-events: none; user-select: none;
  font-size: clamp(5.5rem, 25vw, 25rem); line-height: 0.8; letter-spacing: -0.06em; font-weight: 600; color: transparent;
  -webkit-text-stroke: 1px color-mix(in srgb, var(--accent) 26%, transparent); white-space: nowrap; opacity: 0.9;
  mask-image: linear-gradient(to bottom, #000 20%, transparent 95%); -webkit-mask-image: linear-gradient(to bottom, #000 20%, transparent 95%);
}
.ch-head { display: grid; gap: 26px; max-width: 1020px; position: relative; padding-top: clamp(60px, 14vw, 210px); }
.ch-meta { display: flex; flex-wrap: wrap; gap: 14px 26px; align-items: center; }
.status { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--soft); display: inline-flex; align-items: center; gap: 10px; border: 1px solid var(--line-strong); border-radius: 999px; padding: 7px 14px 7px 12px; background: var(--panel); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }
.status::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 10px var(--accent); animation: blink 2.2s ease-in-out infinite; }
@keyframes blink { 50% { opacity: 0.25; } }
.ch-body { display: grid; grid-template-columns: minmax(0, 1.18fr) minmax(0, 0.82fr); gap: clamp(28px, 4.5vw, 70px); margin-top: clamp(50px, 8vh, 96px); align-items: start; }
.chapter.flip .ch-body { grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr); }
.chapter.flip .console { order: 2; }

.console { position: relative; border: 1px solid var(--line-strong); background: var(--panel); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-radius: 4px; }
.console::before, .console::after { content: ""; position: absolute; width: 14px; height: 14px; border: 1px solid var(--accent); pointer-events: none; }
.console::before { left: -1px; top: -1px; border-right: 0; border-bottom: 0; }
.console::after { right: -1px; bottom: -1px; border-left: 0; border-top: 0; }
.console .bar { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 13px 16px; border-bottom: 1px solid var(--line); font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--soft); }
.console .bar .tag { color: var(--muted); border: 1px solid var(--line-strong); padding: 3px 8px; border-radius: 3px; font-size: 9.5px; white-space: nowrap; }
.console .bar .t { display: inline-flex; align-items: center; gap: 10px; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.console .bar .t::before { content: ""; width: 6px; height: 6px; background: var(--accent); transform: rotate(45deg); flex: none; }
.console canvas { width: 100%; aspect-ratio: 16 / 11; display: block; }
.chain { display: grid; grid-template-columns: repeat(5, 1fr); border-top: 1px solid var(--line); }
.chain li { padding: 12px 10px 13px; font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--dim); border-right: 1px solid var(--line); position: relative; transition: color 0.4s, background 0.4s; display: grid; gap: 3px; min-width: 0; }
.chain li:last-child { border-right: 0; }
.chain li b { font-weight: 400; color: inherit; overflow: hidden; text-overflow: ellipsis; }
.chain li small { font-family: var(--sans); font-size: 11px; letter-spacing: 0; text-transform: none; color: var(--dim); line-height: 1.3; transition: color 0.4s; }
.chain li::before { content: ""; position: absolute; left: 0; right: 0; top: -1px; height: 1px; background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform 0.6s var(--ease); }
.chain li.on { color: var(--accent); background: color-mix(in srgb, var(--accent) 6%, transparent); }
.chain li.on small { color: var(--soft); }
.chain li.on::before { transform: scaleX(1); }

.cases { display: grid; }
.cases .cap { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--muted); padding-bottom: 16px; }
.case { border-top: 1px solid var(--line); padding: 20px 0 22px; display: grid; grid-template-columns: 42px 1fr; transition: border-color 0.4s; }
.case:last-of-type { border-bottom: 1px solid var(--line); }
.case .n { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.16em; color: var(--accent); padding-top: 5px; }
.case h3 { font-size: 1.22rem; letter-spacing: -0.02em; font-weight: 500; margin-bottom: 6px; }
.case p { color: var(--soft); font-size: 0.96rem; line-height: 1.5; }
.case:hover { border-color: var(--accent); }
.horizon-note { margin-top: 22px; font-size: 0.92rem; color: var(--muted); display: flex; gap: 12px; align-items: baseline; }
.horizon-note b { font-family: var(--mono); font-weight: 400; font-size: 10px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--accent); flex: none; }
.caps3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; margin-top: clamp(40px, 6vh, 70px); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.caps3 > div { padding: 24px 24px 26px 0; }
.caps3 > div + div { padding-left: 24px; border-left: 1px solid var(--line); }
.caps3 h4 { font-size: 1.05rem; font-weight: 500; letter-spacing: -0.015em; margin-bottom: 6px; }
.caps3 p { color: var(--muted); font-size: 0.93rem; line-height: 1.5; }

/* Ecosystem */
.eco { position: relative; margin-top: 10px; }
.eco svg.wires { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; overflow: visible; }
.eco svg.wires path { fill: none; stroke: color-mix(in srgb, var(--accent) 34%, transparent); stroke-width: 1; }
.eco svg.wires path.flow { stroke: var(--accent); stroke-width: 1.4; stroke-dasharray: 3 46; stroke-linecap: round; animation: flow 3.2s linear infinite; animation-delay: calc(var(--d, 0) * -1s); filter: drop-shadow(0 0 4px var(--accent)); }
.eco svg.wires path.hot { stroke: var(--accent); stroke-width: 1.3; }
@keyframes flow { to { stroke-dashoffset: -98; } }
.eco-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(180px, 0.62fr) minmax(0, 1fr); gap: clamp(30px, 7vw, 120px); align-items: center; position: relative; }
.eco-col { display: grid; gap: 10px; }
.eco-col .cap, .eco-base .cap { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.24em; text-transform: uppercase; color: var(--accent); margin-bottom: 10px; display: flex; justify-content: space-between; gap: 10px; }
.eco-col .cap i, .eco-base .cap i { font-style: normal; color: var(--muted); }
.eco-col.r .cap { flex-direction: row-reverse; }
.chip { border: 1px solid var(--line-strong); background: var(--panel); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); padding: 12px 16px; font-size: 0.95rem; letter-spacing: -0.005em; display: flex; justify-content: space-between; align-items: center; gap: 12px; border-radius: 3px; transition: border-color 0.3s, color 0.3s, transform 0.4s var(--ease), background 0.3s; cursor: default; }
.chip small { font-family: var(--mono); font-size: 9px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--dim); white-space: nowrap; transition: color 0.3s; }
.chip:hover, .chip.hot { border-color: var(--accent); color: var(--accent); background: color-mix(in srgb, var(--accent) 7%, var(--panel)); }
.chip:hover small, .chip.hot small { color: var(--accent); }
.eco-col.l .chip:hover { transform: translateX(6px); } .eco-col.r .chip:hover { transform: translateX(-6px); }
.eco-col.r .chip { flex-direction: row-reverse; }
.eco-core { display: grid; place-items: center; text-align: center; gap: 18px; padding: 20px 0; }
.eco-core .gem { width: clamp(120px, 14vw, 190px); aspect-ratio: 1; position: relative; display: grid; place-items: center; }
.eco-core .gem svg { width: 100%; height: 100%; overflow: visible; }
.eco-core .gem .halo { position: absolute; inset: -34%; border-radius: 50%; background: radial-gradient(circle, color-mix(in srgb, var(--accent) 30%, transparent), transparent 62%); animation: breathe 5s ease-in-out infinite; }
@keyframes breathe { 50% { transform: scale(1.18); opacity: 0.6; } }
.eco-core .gem .orbit { position: absolute; inset: -16%; border: 1px dashed var(--line-strong); border-radius: 50%; animation: spin 40s linear infinite; }
.eco-core .gem .orbit.b { inset: -34%; animation-duration: 70s; animation-direction: reverse; border-style: solid; border-color: var(--line); }
.eco-core p { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.24em; text-transform: uppercase; color: var(--soft); line-height: 1.8; }
.eco-core p b { display: block; color: var(--accent); font-weight: 400; }
.eco-base { margin-top: clamp(40px, 7vh, 80px); position: relative; }
.eco-base .row { display: grid; grid-template-columns: repeat(6, 1fr); gap: 10px; }
.eco-base .chip { flex-direction: column; align-items: flex-start; gap: 6px; padding: 14px 16px; }
.eco-claim { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(24px, 5vw, 80px); margin-top: clamp(60px, 10vh, 120px); align-items: end; }
.eco-claim .big { font-size: clamp(1.6rem, 3.3vw, 2.9rem); line-height: 1.08; letter-spacing: -0.03em; font-weight: 500; }

/* Doctrine */
.doctrine { display: grid; grid-template-columns: repeat(5, 1fr); border-top: 1px solid var(--line-strong); }
.doctrine article { padding: 26px 22px 34px 0; display: grid; gap: 14px; align-content: start; position: relative; transition: background 0.5s; }
.doctrine article + article { border-left: 1px solid var(--line); padding-left: 22px; }
.doctrine .n { font-family: var(--serif); font-style: italic; font-size: 2.3rem; line-height: 1; color: var(--accent); }
.doctrine h3 { font-size: 1.16rem; letter-spacing: -0.02em; font-weight: 500; }
.doctrine p { font-size: 0.93rem; color: var(--soft); line-height: 1.5; }
.doctrine article::before { content: ""; position: absolute; left: 0; right: 0; top: -1px; height: 1px; background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform 0.7s var(--ease); }
.doctrine article:hover::before { transform: scaleX(1); }

/* Evidence */
.stats { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line); }
.stat { padding: 30px 22px 30px 0; display: grid; gap: 12px; align-content: start; }
.stat + .stat { border-left: 1px solid var(--line); padding-left: 26px; }
.stat .v { font-size: clamp(2.8rem, 6.4vw, 5.6rem); letter-spacing: -0.05em; line-height: 0.9; font-weight: 500; display: flex; align-items: baseline; gap: 6px; font-variant-numeric: tabular-nums; }
.stat .v small { font-family: var(--serif); font-style: italic; font-size: 0.42em; letter-spacing: 0; color: var(--accent); }
.stat p { font-size: 0.95rem; color: var(--soft); max-width: 17em; line-height: 1.45; }
.evidence-foot { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 18px 40px; margin-top: 22px; }

/* Invest */
.invest { text-align: center; padding-block: clamp(140px, 24vh, 300px); }
.invest .wrap { display: grid; justify-items: center; gap: 34px; }
.invest .h2 { font-size: clamp(2.6rem, 8.6vw, 7.6rem); line-height: 0.92; letter-spacing: -0.045em; }
.invest .lead { margin-inline: auto; max-width: 34em; }
.invest .cta { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); background: color-mix(in srgb, var(--bg) 80%, transparent); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); padding: 60px 0 28px; }
.foot { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 40px; }
.foot h5 { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--muted); font-weight: 400; margin: 0 0 16px; }
.foot li { margin-bottom: 9px; }
.foot li a, .foot address a { color: var(--soft); transition: color 0.25s; font-size: 0.95rem; }
.foot li a:hover, .foot address a:hover { color: var(--accent); }
.foot address { font-style: normal; color: var(--soft); font-size: 0.95rem; line-height: 1.6; }
.foot .about { color: var(--muted); font-size: 0.95rem; max-width: 26em; margin-top: 18px; }
.legal { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px 30px; margin-top: 54px; padding-top: 22px; border-top: 1px solid var(--line); font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.1em; color: var(--dim); text-transform: uppercase; }

/* ───────── Sub pages ───────── */
.page-hero { padding-top: clamp(150px, 24vh, 250px); padding-bottom: clamp(50px, 8vh, 90px); }
.page-hero .wrap { display: grid; gap: 28px; }
.page-hero .display { font-size: clamp(2.7rem, 7.6vw, 6.6rem); }
.cols { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(30px, 6vw, 96px); align-items: start; }
.panel { border: 1px solid var(--line-strong); background: var(--panel); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-radius: 4px; padding: clamp(22px, 3vw, 38px); position: relative; }
.panel::before { content: ""; position: absolute; left: -1px; top: -1px; width: 14px; height: 14px; border: 1px solid var(--accent); border-right: 0; border-bottom: 0; }
.moves { display: grid; counter-reset: m; }
.move { border-top: 1px solid var(--line); padding: 26px 0 28px; display: grid; grid-template-columns: 70px 1fr; }
.move:last-child { border-bottom: 1px solid var(--line); }
.move .n { font-family: var(--serif); font-style: italic; font-size: 2.2rem; line-height: 1; color: var(--accent); }
.move h3 { font-size: clamp(1.3rem, 2.2vw, 1.8rem); letter-spacing: -0.025em; font-weight: 500; margin-bottom: 8px; }
.move p { color: var(--soft); max-width: 36em; }
.form { display: grid; gap: 16px; }
.form .two { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { display: grid; gap: 7px; }
.field label { font-family: var(--mono); font-size: 10px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--muted); }
.field input, .field textarea, .field select {
  font: inherit; color: var(--ink); background: rgba(255, 255, 255, 0.03); border: 1px solid var(--line-strong); border-radius: 3px; padding: 13px 14px; width: 100%;
  transition: border-color 0.25s, background 0.25s, box-shadow 0.25s; -webkit-appearance: none; appearance: none;
}
.field textarea { resize: vertical; min-height: 130px; }
.field input::placeholder, .field textarea::placeholder { color: var(--dim); }
.field input:focus, .field textarea:focus { outline: 0; border-color: var(--accent); background: rgba(255, 255, 255, 0.05); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 16%, transparent); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form .btn { justify-self: start; margin-top: 6px; }
.form-msg { font-size: 0.92rem; color: var(--accent); min-height: 1.4em; }
.form-msg.err { color: var(--hostile); }
.kv { display: grid; gap: 22px; }
.kv > div { border-top: 1px solid var(--line); padding-top: 16px; display: grid; gap: 6px; }
.kv dt, .kv .k { font-family: var(--mono); font-size: 10px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--muted); }
.kv .v { color: var(--soft); font-size: 1rem; line-height: 1.6; }
.kv .v a { border-bottom: 1px solid var(--line-strong); transition: color 0.25s, border-color 0.25s; }
.kv .v a:hover { color: var(--accent); border-color: var(--accent); }
.prose { max-width: 760px; display: grid; gap: 18px; color: var(--soft); }
.prose h2 { font-size: 1.35rem; font-weight: 500; letter-spacing: -0.02em; color: var(--ink); margin-top: 26px; }
.prose ul { display: grid; gap: 12px; }
.prose ul li { padding-left: 22px; position: relative; }
.prose ul li::before { content: ""; position: absolute; left: 2px; top: 0.62em; width: 6px; height: 6px; background: var(--accent); transform: rotate(45deg); }
.prose a { color: var(--ink); border-bottom: 1px solid var(--line-strong); }
.prose a:hover { color: var(--accent); border-color: var(--accent); }
.center-page { min-height: 100svh; display: grid; place-items: center; text-align: center; padding: 140px 0 80px; }
.center-page .wrap { display: grid; gap: 28px; justify-items: center; }

/* ───────── Responsive ───────── */
@media (max-width: 1080px) {
  .nav { display: none; }
  .menu-btn { display: inline-flex; }
  .loop-grid { grid-template-columns: 1fr; }
  .ring { max-width: 400px; }
  .ch-body, .chapter.flip .ch-body { grid-template-columns: 1fr; }
  .chapter.flip .console { order: 0; }
  .doctrine { grid-template-columns: 1fr 1fr; }
  .doctrine article { border-top: 1px solid var(--line); }
  .doctrine article:nth-child(odd) { border-left: 0; padding-left: 0; }
  .doctrine article:nth-child(-n+2) { border-top: 0; }
  .eco-grid { grid-template-columns: 1fr; gap: 64px; }
  .eco-col { grid-template-columns: 1fr 1fr; }
  .eco-col .cap { grid-column: 1 / -1; }
  .eco-col.r .cap, .eco-col.r .chip { flex-direction: row; }
  .eco-col .chip:hover { transform: none !important; }
  .eco-core { order: 0; }
  .eco-base .row { grid-template-columns: repeat(3, 1fr); }
  .foot { grid-template-columns: 1fr 1fr; }
  .cols { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  body { font-size: 16px; }
  .site-header .bar { height: 66px; }
  .brand .wm { font-size: 10.5px; letter-spacing: 0.24em; }
  .hero-idx { grid-template-columns: 1fr; }
  .hero-idx a { border-right: 0; border-bottom: 1px solid var(--line); padding: 14px 0; display: flex; justify-content: space-between; align-items: baseline; }
  .hero-idx a:last-child { border-bottom: 0; }
  .tri { grid-template-columns: 1fr; }
  .tri > div + div { border-left: 0; padding-left: 0; border-top: 1px solid var(--line); margin-top: 26px; }
  .caps3 { grid-template-columns: 1fr; }
  .caps3 > div + div { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); }
  .chain li small { display: none; }
  .chain li { padding: 11px 4px; text-align: center; font-size: 8.5px; letter-spacing: 0.08em; }
  .stats { grid-template-columns: 1fr 1fr; }
  .stat:nth-child(odd) { border-left: 0; padding-left: 0; }
  .stat:nth-child(n+3) { border-top: 1px solid var(--line); }
  .stat:last-child:nth-child(odd) { grid-column: 1 / -1; }
  .eco-col { grid-template-columns: 1fr; }
  .eco-base .row { grid-template-columns: 1fr 1fr; }
  .eco-claim { grid-template-columns: 1fr; }
  .doctrine { grid-template-columns: 1fr; }
  .doctrine article, .doctrine article + article { border-left: 0; padding-left: 0; border-top: 1px solid var(--line); }
  .doctrine article:nth-child(2) { border-top: 1px solid var(--line); }
  .foot { grid-template-columns: 1fr; gap: 30px; }
  .form .two { grid-template-columns: 1fr; }
  .move { grid-template-columns: 48px 1fr; }
  .console .bar .tag { display: none; }
  .console canvas { aspect-ratio: 1 / 1; }
  .ring { max-width: 300px; margin-block: 30px 46px; }
  .ring .node[data-pos="r"] span, .ring .node[data-pos="l"] span { left: auto; right: auto; top: 100%; }
  .status { white-space: normal; border-radius: 14px; line-height: 1.5; }
  .step { grid-template-columns: 40px 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001s !important; animation-iteration-count: 1 !important; transition-duration: 0.001s !important; }
  .js .rv, .js .ln > span { opacity: 1; transform: none; filter: none; }
}