/* ══════════════════════════════════════════════════════════════
   NAKAMA 仲間 — styles
   ink black · neon vermilion (life / fees) · cyan (data / mind)
   ══════════════════════════════════════════════════════════════ */

:root {
  --ink: #06060a;
  --ink-2: #0b0b12;
  --ink-3: #12121b;
  --line: rgba(236, 231, 222, .08);
  --line-2: rgba(236, 231, 222, .16);
  --bone: #ece7de;
  --bone-2: rgba(236, 231, 222, .78);
  --mute: #9a98a8;
  --dim: #7d7b8c;
  --red: #ff2d55;
  --red-2: #ff6b85;
  --red-deep: #8f0c26;
  --red-glow: rgba(255, 45, 85, .5);
  --cyan: #22e4ff;
  --cyan-a: rgba(34, 228, 255, .12);
  --cyan-glow: rgba(34, 228, 255, .45);

  --f-display: "Chakra Petch", "Segoe UI", system-ui, sans-serif;
  --f-serif: "Noto Serif JP", "Yu Mincho", "Hiragino Mincho ProN", Georgia, serif;
  --f-mono: "JetBrains Mono", "DotGothic16", ui-monospace, Consolas, monospace;
  --f-pixel: "DotGothic16", "JetBrains Mono", monospace;

  --gutter: clamp(16px, 4vw, 56px);
  --maxw: 1240px;
  --wrap: min(100% - 2 * var(--gutter), var(--maxw));
  --nav-h: 68px;
  --ease: cubic-bezier(.2, .7, .1, 1);
}

/* ── base ───────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-h);
  -webkit-text-size-adjust: 100%;
  background: var(--ink);
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--bone);
  font: 400 16px/1.6 var(--f-display);
  overflow-x: hidden;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
}

html.is-booting body { overflow: hidden; }

::selection { background: var(--red); color: var(--ink); }
a { color: inherit; }
img, svg { display: block; }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }

.jp { font-family: var(--f-serif); font-weight: 600; letter-spacing: .04em; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.skip {
  position: fixed; z-index: 300; left: 12px; top: -80px;
  padding: 10px 16px; background: var(--red); color: var(--ink);
  font: 600 13px var(--f-mono); text-decoration: none;
}
.skip:focus { top: 12px; }

/* ── ambient fx ─────────────────────────────────────────────── */
.fx { position: fixed; inset: 0; z-index: 90; pointer-events: none; overflow: hidden; }
.fx__scan {
  position: absolute; inset: 0;
  background: repeating-linear-gradient(to bottom, rgba(255, 255, 255, .022) 0 1px, transparent 1px 3px);
}
.fx__grain {
  position: absolute; inset: -50%;
  opacity: .06;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 .6 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: grain 1.1s steps(5) infinite;
}

/* ── boot sequence ──────────────────────────────────────────── */
.boot { display: none; }
.js:not(.no-boot) .boot {
  position: fixed; inset: 0; z-index: 200;
  display: grid; place-items: center;
  background: var(--ink);
  transition: opacity .55s var(--ease), visibility .55s;
}
.boot.is-done { opacity: 0; visibility: hidden; }
.boot__inner { width: min(560px, 100% - 32px); }
.boot__seal { width: 44px; height: 44px; margin-bottom: 20px; filter: drop-shadow(0 0 18px var(--red-glow)); }
.boot__log {
  margin: 0; min-height: 11em;
  font: 13px/1.85 var(--f-mono); color: var(--bone-2);
  white-space: pre-wrap;
}
.boot__log::after { content: "▌"; color: var(--red); animation: blink 1s steps(1) infinite; }
.boot__bar { height: 2px; margin-top: 18px; background: var(--line); overflow: hidden; }
.boot__bar span {
  display: block; height: 100%;
  background: var(--red); box-shadow: 0 0 12px var(--red);
  transform: scaleX(0); transform-origin: left;
  animation: fill 1.6s var(--ease) forwards;
}
.boot__skip {
  position: absolute; left: 0; right: 0; bottom: 24px; margin: 0;
  text-align: center; font: 11px var(--f-mono); letter-spacing: .2em;
  text-transform: uppercase; color: var(--dim);
}

/* ── nav ────────────────────────────────────────────────────── */
.nav {
  position: fixed; inset: 0 0 auto; z-index: 80;
  height: var(--nav-h);
  display: flex; align-items: center; gap: 28px;
  padding: 0 var(--gutter);
  border-bottom: 1px solid transparent;
  transition: background .3s, border-color .3s;
}
.nav.is-scrolled, .nav.is-open {
  background: rgba(6, 6, 10, .78);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom-color: var(--line);
}

.brand { display: flex; align-items: center; gap: 11px; margin-right: auto; text-decoration: none; }
.brand__seal { width: 30px; height: 30px; flex: none; filter: drop-shadow(0 0 10px rgba(255, 45, 85, .45)); }
.brand__word { font-weight: 700; font-size: 15px; letter-spacing: .3em; }
.brand__jp { font: 900 14px var(--f-serif); color: var(--red); letter-spacing: .1em; }

.nav__menu { display: flex; gap: 30px; }
.nav__menu a {
  position: relative;
  display: flex; flex-direction: column; align-items: center;
  padding: 6px 0;
  font-size: 12.5px; font-weight: 600; line-height: 1.1;
  letter-spacing: .16em; text-transform: uppercase;
  text-decoration: none; color: var(--bone-2);
  transition: color .2s;
}
.nav__menu a .jp { margin-bottom: 4px; font-size: 10px; letter-spacing: .2em; color: var(--red); }
.nav__menu a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -3px; height: 1px;
  background: var(--red); transform: scaleX(0); transition: transform .3s var(--ease);
}
.nav__menu a:hover, .nav__menu a.is-active { color: var(--bone); }
.nav__menu a:hover::after, .nav__menu a.is-active::after { transform: scaleX(1); }
.nav__toggle { display: none; }

/* ── buttons & small parts ──────────────────────────────────── */
.btn {
  position: relative;
  display: inline-flex; align-items: center; justify-content: center; gap: .55em;
  min-height: 48px; padding: 0 26px;
  font: 600 13px/1 var(--f-display); letter-spacing: .18em; text-transform: uppercase;
  text-decoration: none; color: var(--bone);
  background: rgba(6, 6, 10, .4);
  border: 1px solid var(--line-2);
  cursor: pointer;
  transition: background .25s, color .25s, border-color .25s, box-shadow .25s;
}
.btn::after {
  content: ""; position: absolute; inset: -5px;
  border: 1px solid var(--red);
  opacity: 0; transform: scale(.94);
  transition: opacity .25s, transform .3s var(--ease);
  pointer-events: none;
}
.btn:hover::after, .btn:focus-visible::after { opacity: .65; transform: none; }
.btn--red { background: var(--red); border-color: var(--red); color: var(--ink); }
.btn--red:hover { background: #ff4a6c; box-shadow: 0 0 36px var(--red-glow); }
.btn--ghost:hover { border-color: var(--bone-2); background: rgba(236, 231, 222, .06); }
.btn--sm { min-height: 38px; padding: 0 16px; font-size: 11.5px; }
.btn--lg { min-height: 58px; padding: 0 34px; font-size: 14px; }
.btn.is-pending::before {
  content: "soon";
  position: absolute; top: -9px; right: -7px; z-index: 1;
  padding: 3px 5px;
  font: 700 9px/1 var(--f-mono); letter-spacing: .12em; text-transform: uppercase;
  color: var(--ink); background: var(--cyan);
}

.eyebrow {
  display: flex; align-items: center; gap: 10px;
  margin: 0 0 18px;
  font: 500 12px/1.4 var(--f-mono); letter-spacing: .22em; text-transform: uppercase;
  color: var(--red);
}
.eyebrow .jp { font-family: var(--f-pixel); font-weight: 400; letter-spacing: .14em; }

.dot {
  width: 7px; height: 7px; flex: none; border-radius: 50%;
  background: var(--red); box-shadow: 0 0 10px var(--red);
  animation: pulse 1.6s ease-in-out infinite;
}
.dot--live { background: var(--cyan); box-shadow: 0 0 10px var(--cyan); }

.link {
  font: 500 12px var(--f-mono); letter-spacing: .14em; text-transform: uppercase;
  color: var(--red); text-decoration: none;
  border-bottom: 1px solid rgba(255, 45, 85, .35); padding-bottom: 2px;
  transition: border-color .2s, color .2s;
}
.link:hover { border-color: var(--red); }
.link.is-pending { color: var(--dim); border-color: var(--line-2); }

.ca {
  display: inline-flex; align-items: center; gap: 12px;
  max-width: 100%; padding: 9px 14px 9px 9px;
  font: 500 12.5px/1 var(--f-mono); color: var(--bone-2);
  background: rgba(6, 6, 10, .6);
  border: 1px dashed var(--line-2);
  cursor: pointer;
  transition: border-color .2s, color .2s;
}
.ca:hover { border-color: var(--red); color: var(--bone); }
.ca__k { padding: 4px 6px; font-weight: 700; letter-spacing: .1em; color: var(--ink); background: var(--red); }
.ca__v { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ca__i { color: var(--red); margin-left: auto; }
.ca--block { display: flex; width: 100%; padding: 12px 14px 12px 12px; }

/* ── hero ───────────────────────────────────────────────────── */
.hero {
  position: relative; isolation: isolate; overflow: hidden;
  min-height: 100vh; min-height: 100svh;
  display: grid; grid-template-rows: 1fr auto;
  padding-top: var(--nav-h);
}

.hero__art {
  position: absolute; z-index: -2;
  top: 50%; right: clamp(-60px, 3vw, 80px);
  width: min(52vw, 700px); aspect-ratio: 1;
  transform: translateY(-52%);
  transition: opacity 1.2s;
}
.hero.has-img .hero__art { opacity: 0; }
.hero__glow {
  position: absolute; inset: -18%; border-radius: 50%;
  background: radial-gradient(closest-side, rgba(255, 45, 85, .32), rgba(255, 45, 85, .07) 62%, transparent);
}
.hero__sun {
  position: absolute; inset: 6%; border-radius: 50%;
  background: linear-gradient(180deg, #ff5476 0%, var(--red) 42%, var(--red-deep) 100%);
  -webkit-mask-image: linear-gradient(#000, #000), repeating-linear-gradient(180deg, #000 0 12px, transparent 12px 19px);
  -webkit-mask-size: 100% 50%, 100% 100%;
  -webkit-mask-repeat: no-repeat;
  -webkit-mask-position: top, top;
  mask-image: linear-gradient(#000, #000), repeating-linear-gradient(180deg, #000 0 12px, transparent 12px 19px);
  mask-size: 100% 50%, 100% 100%;
  mask-repeat: no-repeat;
  mask-position: top, top;
}
.hero__brella {
  position: absolute; left: -6%; bottom: -6%;
  width: 70%; height: 70%;
  color: var(--ink); --rib: rgba(255, 45, 85, .6);
  transform: rotate(-16deg);
  filter: drop-shadow(0 0 40px rgba(0, 0, 0, .7));
}

.slot--bg { position: absolute; inset: 0; z-index: -3; }
.slot--bg img { object-position: 68% 35%; }

.hero__shade {
  position: absolute; inset: 0; z-index: -1;
  background:
    linear-gradient(90deg, rgba(6, 6, 10, .94) 0%, rgba(6, 6, 10, .72) 36%, rgba(6, 6, 10, .12) 68%, rgba(6, 6, 10, .3) 100%),
    linear-gradient(0deg, var(--ink) 0%, rgba(6, 6, 10, 0) 34%),
    linear-gradient(180deg, rgba(6, 6, 10, .7) 0%, rgba(6, 6, 10, 0) 22%);
}

.hero__rain { position: absolute; inset: 0; z-index: 0; width: 100%; height: 100%; pointer-events: none; }

.hero__kanji {
  position: absolute; z-index: 1;
  top: calc(var(--nav-h) + 3vh); right: var(--gutter);
  writing-mode: vertical-rl;
  font: 900 clamp(84px, 16vh, 180px)/1 var(--f-serif);
  letter-spacing: .04em;
  color: transparent;
  -webkit-text-stroke: 1.5px rgba(236, 231, 222, .85);
  filter: drop-shadow(0 0 14px rgba(255, 45, 85, .55));
  user-select: none;
}
.hero__vertical {
  position: absolute; z-index: 1; margin: 0;
  top: calc(var(--nav-h) + 4vh); right: calc(var(--gutter) + clamp(96px, 17vh, 200px));
  writing-mode: vertical-rl;
  font: 400 13px/1.9 var(--f-pixel); letter-spacing: .5em;
  color: var(--bone-2);
}

.hero__inner {
  position: relative; z-index: 2;
  align-self: center;
  width: var(--wrap); margin: 0 auto;
  padding: 7vh 0 5vh;
}
.hero__title {
  margin: 0 0 18px;
  font-weight: 700; font-size: clamp(64px, 12.5vw, 200px); line-height: .86;
  letter-spacing: .02em;
  text-shadow: 3px 0 0 rgba(255, 45, 85, .5), -3px 0 0 rgba(34, 228, 255, .3);
}
.hero__lede { max-width: 620px; margin: 0 0 14px; font-size: clamp(20px, 2.3vw, 30px); font-weight: 500; line-height: 1.25; }
.hero__body { max-width: 540px; margin: 0 0 30px; font: 400 16.5px/1.85 var(--f-serif); color: var(--bone-2); }
.hero__body strong { color: var(--red); font-weight: 600; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 22px; }

/* glitch title */
.glitch { position: relative; display: inline-block; }
.glitch::before, .glitch::after {
  content: attr(data-text);
  position: absolute; inset: 0;
  clip-path: inset(0 0 100% 0);
  text-shadow: none;
  pointer-events: none;
}
.glitch::before { color: var(--cyan); animation: glitch-a 3.4s infinite steps(1); }
.glitch::after { color: var(--red); animation: glitch-b 2.9s infinite steps(1); }

/* hud */
.hud { position: relative; z-index: 2; width: var(--wrap); margin: 0 auto; padding-bottom: 22px; }
.hud__stats {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0; border-top: 1px solid var(--line-2);
}
.hud__stats > div { padding: 14px 16px 10px 0; }
.hud__stats dt { font: 500 10.5px/1.4 var(--f-mono); letter-spacing: .22em; text-transform: uppercase; color: var(--dim); }
.hud__stats dd { margin: 4px 0 0; font-weight: 600; font-size: 15px; letter-spacing: .08em; text-transform: uppercase; }
.hud__status { color: var(--cyan); }

.ecg {
  position: relative; height: 54px; margin-top: 4px;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}
.ecg svg { width: 100%; height: 100%; overflow: visible; }
.ecg path {
  fill: none; stroke: var(--red); stroke-width: 1.6; stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
  filter: drop-shadow(0 0 4px var(--red));
}
.ecg.is-beat path { animation: beat .7s ease-out; }
.ecg__label {
  position: absolute; right: 10%; top: 0; margin: 0;
  font: 10px var(--f-mono); letter-spacing: .2em; text-transform: uppercase; color: var(--dim);
}
.hud__block {
  display: flex; align-items: center; gap: 8px; margin: 2px 0 0;
  font: 11px var(--f-mono); letter-spacing: .18em; text-transform: uppercase; color: var(--mute);
}
.hud__block[hidden] { display: none; }
.hud__block.is-beat .dot { animation: ping .8s ease-out; }

/* ── section scaffolding ────────────────────────────────────── */
.section-head { position: relative; width: var(--wrap); margin: 0 auto; padding: clamp(96px, 16vh, 180px) 0 clamp(40px, 8vh, 80px); }
.section-head__jp {
  position: absolute; top: clamp(40px, 8vh, 90px); right: 0; margin: 0;
  font: 900 clamp(84px, 15vw, 210px)/1 var(--f-serif); letter-spacing: .02em;
  color: transparent; -webkit-text-stroke: 1px rgba(236, 231, 222, .1);
  pointer-events: none; user-select: none; white-space: nowrap;
}
.section-title {
  max-width: 17ch; margin: 0 0 20px;
  font-weight: 700; font-size: clamp(34px, 5.2vw, 70px); line-height: 1.02;
  text-transform: uppercase;
}
.section-lede { max-width: 580px; margin: 0; font: 400 17px/1.85 var(--f-serif); color: var(--bone-2); }
.section-lede code { padding: 2px 7px; font: 500 .85em var(--f-mono); color: var(--cyan); background: var(--cyan-a); }

.story, .protocol, .archive, .arcs, .join { position: relative; overflow-x: hidden; overflow-x: clip; }

/* ── story ──────────────────────────────────────────────────── */
.chapter {
  position: relative; isolation: isolate;
  display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: clamp(28px, 5vw, 84px); align-items: center;
  width: var(--wrap); margin: 0 auto;
  padding: clamp(56px, 11vh, 130px) 0;
}
.chapter:nth-of-type(even) { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); }
.chapter:nth-of-type(even) .chapter__media { order: 2; }

.chapter__mark {
  position: absolute; z-index: -1; top: 50%; right: -3%;
  transform: translateY(-50%);
  writing-mode: vertical-rl;
  font: 900 clamp(140px, 21vw, 300px)/1 var(--f-serif);
  color: transparent; -webkit-text-stroke: 1px rgba(255, 45, 85, .17);
  pointer-events: none; user-select: none;
}
.chapter:nth-of-type(even) .chapter__mark { right: auto; left: -3%; }

.chapter__num {
  display: flex; align-items: baseline; gap: 12px; margin: 0 0 16px;
  font: 500 12px/1 var(--f-mono); letter-spacing: .24em; text-transform: uppercase; color: var(--red);
}
.chapter__num .jp { font-size: 15px; letter-spacing: .2em; color: var(--bone); }
.chapter__title {
  margin: 0 0 10px;
  font-weight: 700; font-size: clamp(30px, 3.5vw, 50px); line-height: 1.02;
  text-transform: uppercase;
}
.chapter__word { margin: 0 0 26px; font: 12px/1.4 var(--f-mono); letter-spacing: .14em; color: var(--mute); }
.chapter__word .jp { margin-right: 6px; font-size: 15px; color: var(--red); }
.chapter__text > p:not([class]), .chapter__beat {
  margin: 0 0 16px;
  font: 400 17px/1.9 var(--f-serif); color: var(--bone-2);
}
.chapter__beat { padding-left: 16px; border-left: 2px solid var(--red); color: var(--bone); font-weight: 600; }
.chapter__text .btn { margin-top: 30px; }

.log { margin: 26px 0 0; font: 12.5px/1.6 var(--f-mono); color: var(--cyan); opacity: .9; }
.log::after { content: "_"; animation: blink 1s steps(1) infinite; }

.interlude {
  position: relative;
  width: var(--wrap); margin: clamp(30px, 6vh, 80px) auto;
  padding: clamp(40px, 9vh, 100px) 0;
  text-align: center;
  border-block: 1px solid var(--line);
}
.interlude::before, .interlude::after {
  content: ""; position: absolute; left: 50%; width: 9px; height: 9px;
  background: var(--red); transform: translateX(-50%) rotate(45deg);
  box-shadow: 0 0 14px var(--red);
}
.interlude::before { top: -5px; }
.interlude::after { bottom: -5px; }
.interlude__jp {
  margin: 0 0 14px;
  font: 900 clamp(34px, 6vw, 84px)/1.25 var(--f-serif); letter-spacing: .08em;
  text-shadow: 0 0 44px rgba(255, 45, 85, .4);
}
.interlude__en { margin: 0; font: 500 13px/1.5 var(--f-mono); letter-spacing: .3em; text-transform: uppercase; color: var(--red); }

/* rail */
.rail {
  position: fixed; z-index: 60; right: 18px; top: 50%;
  display: flex; flex-direction: column; gap: 4px;
  transform: translateY(-50%);
  opacity: 0; visibility: hidden;
  transition: opacity .4s, visibility .4s;
}
.rail.is-on { opacity: 1; visibility: visible; }
.rail a { position: relative; display: flex; align-items: center; text-decoration: none; padding: 3px 0; }
.rail__jp {
  display: grid; place-items: center; width: 30px; height: 30px;
  font: 600 14px var(--f-serif); color: var(--dim);
  background: rgba(6, 6, 10, .7); border: 1px solid var(--line-2);
  transition: color .3s, background .3s, border-color .3s, box-shadow .3s;
}
.rail__en {
  position: absolute; right: 42px; white-space: nowrap;
  font: 10px var(--f-mono); letter-spacing: .2em; text-transform: uppercase; color: var(--bone);
  opacity: 0; transform: translateX(6px);
  transition: opacity .3s, transform .3s;
  pointer-events: none;
}
.rail a:hover .rail__en, .rail a:focus-visible .rail__en { opacity: 1; transform: none; }
.rail a:hover .rail__jp { color: var(--bone); border-color: var(--bone-2); }
.rail a.is-active .rail__jp { color: var(--ink); background: var(--red); border-color: var(--red); box-shadow: 0 0 16px var(--red-glow); }

/* ── image slots (memory shards) ────────────────────────────── */
.slot {
  position: relative; margin: 0; overflow: hidden;
  aspect-ratio: 3 / 2;
  background: repeating-linear-gradient(135deg, rgba(236, 231, 222, .035) 0 1px, transparent 1px 9px), var(--ink-2);
  border: 1px solid var(--line-2);
}
.slot::after {
  content: ""; position: absolute; inset: 8px; z-index: 3; pointer-events: none;
  background:
    linear-gradient(var(--red), var(--red)) top left / 14px 1px no-repeat,
    linear-gradient(var(--red), var(--red)) top left / 1px 14px no-repeat,
    linear-gradient(var(--red), var(--red)) top right / 14px 1px no-repeat,
    linear-gradient(var(--red), var(--red)) top right / 1px 14px no-repeat,
    linear-gradient(var(--red), var(--red)) bottom left / 14px 1px no-repeat,
    linear-gradient(var(--red), var(--red)) bottom left / 1px 14px no-repeat,
    linear-gradient(var(--red), var(--red)) bottom right / 14px 1px no-repeat,
    linear-gradient(var(--red), var(--red)) bottom right / 1px 14px no-repeat;
}
.slot img {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 1.4s var(--ease);
}
.slot.is-loaded img { animation: restore 1.2s var(--ease) both; }
.chapter__media:hover .slot.is-loaded img { transform: scale(1.03); }

.slot figcaption {
  position: absolute; z-index: 2; inset: auto 0 0;
  display: flex; align-items: center; gap: 12px;
  padding: 30px 20px 14px;
  font: 11px/1.3 var(--f-mono); letter-spacing: .18em; text-transform: uppercase; color: var(--bone-2);
  background: linear-gradient(0deg, rgba(6, 6, 10, .88), transparent);
}
.slot figcaption span { color: var(--red); }

.slot__ph {
  position: absolute; inset: 0;
  display: grid; place-content: center; justify-items: center; gap: 12px;
  padding: 20px 20px 48px; text-align: center;
}
.slot__ph::before {
  content: ""; position: absolute; left: 0; right: 0; top: 0; height: 22%;
  background: linear-gradient(transparent, rgba(255, 45, 85, .07), transparent);
  animation: sweep 3.8s linear infinite;
}
.slot__jp {
  font: 900 clamp(28px, 4vw, 46px)/1 var(--f-serif); letter-spacing: .12em;
  color: transparent; -webkit-text-stroke: 1px var(--red);
  animation: flicker 5s infinite;
}
.slot__en { font: 500 11px/1.5 var(--f-mono); letter-spacing: .28em; text-transform: uppercase; color: var(--mute); }
.slot__bar { width: 150px; height: 2px; overflow: hidden; background: var(--line-2); }
.slot__bar i { display: block; width: 40%; height: 100%; background: var(--red); animation: scanbar 1.8s ease-in-out infinite; }
.slot__dev { display: none; max-width: 92%; font: 10.5px/1.5 var(--f-mono); letter-spacing: .04em; color: var(--cyan); }
.is-dev .slot__dev { display: block; }
.slot.is-loaded .slot__ph { display: none; }

.slot--bg { border: 0; background: none; aspect-ratio: auto; }
.slot--bg::after { display: none; }
.slot--bg .slot__ph { inset: calc(var(--nav-h) + 12px) auto auto var(--gutter); display: block; padding: 0; text-align: left; }
.slot--bg .slot__ph::before { display: none; }

/* ── protocol ───────────────────────────────────────────────── */
.protocol {
  background: var(--ink-2);
  border-block: 1px solid var(--line);
}
.protocol::before {
  content: ""; position: absolute; inset: auto 0 0; height: 65%; pointer-events: none;
  opacity: .55;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='80' height='40' viewBox='0 0 80 40'%3E%3Cdefs%3E%3Cg id='w'%3E%3Ccircle r='39' fill='%230b0b12'/%3E%3Ccircle r='30'/%3E%3Ccircle r='21'/%3E%3Ccircle r='12'/%3E%3C/g%3E%3C/defs%3E%3Cg fill='none' stroke='%23ff2d55' stroke-opacity='.28' stroke-width='1.1'%3E%3Cuse href='%23w' x='0' y='0'/%3E%3Cuse href='%23w' x='80' y='0'/%3E%3Cuse href='%23w' x='40' y='20'/%3E%3Cuse href='%23w' x='0' y='40'/%3E%3Cuse href='%23w' x='80' y='40'/%3E%3Cuse href='%23w' x='40' y='60'/%3E%3C/g%3E%3C/svg%3E");
  background-size: 80px 40px;
  -webkit-mask-image: linear-gradient(0deg, #000, transparent);
  mask-image: linear-gradient(0deg, #000, transparent);
}
.protocol > * { position: relative; }

.flow {
  list-style: none; margin: 0 auto; padding: 0;
  width: var(--wrap);
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 30px;
}
.flow__node {
  position: relative;
  display: flex; flex-direction: column; gap: 8px;
  padding: 24px 22px 26px;
  background: rgba(6, 6, 10, .75);
  border: 1px solid var(--line-2);
}
.flow__node strong { font-size: 19px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }
.flow__node > span:last-child { font: 400 14.5px/1.7 var(--f-serif); color: var(--bone-2); }
.flow__idx { font: 11px var(--f-mono); letter-spacing: .2em; color: var(--dim); }
.flow__node--red { border-color: rgba(255, 45, 85, .6); box-shadow: inset 0 0 44px rgba(255, 45, 85, .1); }
.flow__node--red strong { color: var(--red); }
.flow__node--cyan { border-color: rgba(34, 228, 255, .5); box-shadow: inset 0 0 44px rgba(34, 228, 255, .08); }
.flow__node--cyan strong { color: var(--cyan); }
.flow__node:not(:last-child)::after {
  content: ""; position: absolute; top: 50%; left: 100%;
  width: 30px; height: 2px;
  background: repeating-linear-gradient(90deg, var(--red) 0 6px, transparent 6px 10px) 0 0 / 20px 2px;
  animation: dash-x .8s linear infinite;
}
.flow__node:not(:last-child)::before {
  content: ""; position: absolute; z-index: 1; top: calc(50% - 4px); left: calc(100% + 22px);
  border: 5px solid transparent; border-left-color: var(--red);
}

.specs {
  width: var(--wrap); margin: 30px auto 0;
  display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.spec { padding: 20px 18px; background: var(--ink-2); }
.spec dt { margin-bottom: 8px; font: 10.5px var(--f-mono); letter-spacing: .22em; text-transform: uppercase; color: var(--dim); }
.spec dd { margin: 0; font-weight: 600; font-size: 15px; letter-spacing: .04em; }
.spec dd.spec__big { font-size: 42px; line-height: 1; font-weight: 700; color: var(--red); text-shadow: 0 0 24px rgba(255, 45, 85, .35); }

.protocol__grid {
  width: var(--wrap); margin: 30px auto 0;
  display: grid; grid-template-columns: 1fr 1fr; gap: 30px;
  padding-bottom: clamp(80px, 14vh, 160px);
}
.panel { position: relative; padding: 28px; background: rgba(6, 6, 10, .75); border: 1px solid var(--line-2); }
.panel__label { margin: 0 0 18px; font: 11px var(--f-mono); letter-spacing: .22em; text-transform: uppercase; color: var(--mute); }
.panel__label .jp { font-family: var(--f-pixel); font-weight: 400; color: var(--red); }
.panel__warn { margin: 0; font: 11.5px/1.6 var(--f-mono); color: var(--mute); }

.fuel__value {
  display: flex; align-items: baseline; gap: 12px; margin: 0 0 10px;
  font: 700 clamp(44px, 6vw, 72px)/1 var(--f-mono); color: var(--cyan);
  text-shadow: 0 0 24px var(--cyan-glow);
}
.fuel__value small { font-size: 16px; letter-spacing: .1em; color: var(--mute); text-shadow: none; }
.fuel:not(.is-live) .fuel__value { color: rgba(125, 123, 140, .45); text-shadow: none; }
.fuel__note { margin: 0 0 20px; font: 400 14.5px/1.7 var(--f-serif); color: var(--bone-2); }
.fuel.is-live .panel__label::after { content: " · live"; color: var(--cyan); }

.contract__links { display: flex; flex-wrap: wrap; gap: 16px 24px; margin: 22px 0; }

/* ── archive terminal ───────────────────────────────────────── */
.archive { padding-bottom: clamp(80px, 14vh, 160px); }
.term {
  width: min(100% - 2 * var(--gutter), 980px); margin: 0 auto;
  background: #07070c;
  border: 1px solid var(--line-2);
  box-shadow: 0 30px 80px rgba(0, 0, 0, .55), 0 0 70px rgba(255, 45, 85, .07);
}
.term__bar {
  display: flex; align-items: center; gap: 14px;
  padding: 10px 14px; border-bottom: 1px solid var(--line);
  font: 11px var(--f-mono); letter-spacing: .12em; color: var(--mute);
}
.term__dots { display: flex; gap: 6px; }
.term__dots i { width: 9px; height: 9px; border-radius: 50%; background: var(--line-2); }
.term__dots i:first-child { background: var(--red); }
.term__title { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.term__status { display: flex; align-items: center; gap: 8px; color: var(--cyan); text-transform: uppercase; white-space: nowrap; }
.term__status .dot { width: 6px; height: 6px; background: var(--cyan); box-shadow: 0 0 10px var(--cyan); }
.term__screen {
  height: clamp(320px, 52vh, 460px); overflow-y: auto;
  padding: 18px 18px 10px;
  font: 13.5px/1.7 var(--f-mono);
  cursor: text;
  scrollbar-width: thin; scrollbar-color: var(--line-2) transparent;
}
.term__screen:focus-within { box-shadow: inset 0 0 0 1px rgba(34, 228, 255, .22); }
.term__line { min-height: 1.7em; white-space: pre-wrap; word-break: break-word; color: var(--bone-2); }
.term__line--cmd { color: var(--bone); }
.term__line--cmd::before { content: "nakama@mainnet:~$ "; color: var(--red); }
.term__line--sys { color: var(--dim); }
.term__line--ok { color: var(--cyan); }
.term__line--err { color: var(--red-2); }
.term__line a { color: var(--cyan); }
.term__form { display: flex; align-items: center; gap: 10px; }
.term__prompt { color: var(--red); white-space: nowrap; }
.term__input {
  flex: 1; min-width: 0; padding: 0;
  font: inherit; color: var(--bone);
  background: transparent; border: 0; outline: none;
  caret-color: var(--red);
}
.term__chips { display: flex; flex-wrap: wrap; gap: 8px; padding: 12px 14px; border-top: 1px solid var(--line); }
.term__chips button {
  padding: 6px 11px;
  font: 12px var(--f-mono); color: var(--bone-2);
  background: transparent; border: 1px solid var(--line-2);
  cursor: pointer; transition: border-color .2s, color .2s;
}
.term__chips button:hover { border-color: var(--red); color: var(--red); }

/* ── arcs ───────────────────────────────────────────────────── */
.arc-list {
  list-style: none; margin: 0 auto; padding: 0 0 clamp(80px, 14vh, 160px);
  width: var(--wrap);
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px;
}
.arc {
  position: relative; display: flex; flex-direction: column;
  min-height: 310px; padding: 24px 22px 28px;
  background: var(--ink-2); border: 1px solid var(--line-2);
}
.arc__head {
  display: flex; justify-content: space-between; align-items: center; margin: 0 0 32px;
  font: 11px var(--f-mono); letter-spacing: .2em; text-transform: uppercase;
}
.arc__num { color: var(--mute); }
.arc__status { padding: 4px 8px; font-size: 10px; color: var(--mute); border: 1px solid var(--line-2); }
.arc__jp { margin: 0 0 12px; font: 900 34px/1 var(--f-serif); letter-spacing: .06em; }
.arc h3 { margin: 0 0 12px; font-size: 22px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.arc > p:last-child { margin: 0; font: 400 14.5px/1.75 var(--f-serif); color: var(--bone-2); }
.arc--active { border-color: var(--red); box-shadow: 0 0 0 1px rgba(255, 45, 85, .2), 0 0 50px rgba(255, 45, 85, .12); }
.arc--active .arc__status { color: var(--ink); background: var(--red); border-color: var(--red); }
.arc--active .arc__jp { color: var(--red); text-shadow: 0 0 24px var(--red-glow); }
.arc--locked { background: repeating-linear-gradient(135deg, rgba(236, 231, 222, .025) 0 1px, transparent 1px 8px), var(--ink-2); }
.arc--locked .arc__jp, .arc--locked h3 { color: var(--dim); }
.redact {
  letter-spacing: -.04em; color: transparent;
  background: linear-gradient(90deg, var(--dim), var(--bone-2), var(--dim)) 0 0 / 200% 100%;
  -webkit-background-clip: text; background-clip: text;
  animation: shimmer 2.6s linear infinite;
}

/* ── join ───────────────────────────────────────────────────── */
.join { isolation: isolate; overflow: hidden; padding-bottom: clamp(80px, 14vh, 150px); }
.join__art {
  position: absolute; z-index: -1; right: 4vw; bottom: calc(min(40vw, 540px) * -.5);
  width: min(40vw, 540px); aspect-ratio: 1;
  opacity: .5; pointer-events: none;
}
.join__art .hero__sun { inset: 0; }
.join__art .hero__brella { left: 6%; bottom: 40%; width: 58%; height: 58%; }

.steps {
  list-style: none; margin: 0 auto; padding: 0;
  width: var(--wrap);
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px;
}
.steps li {
  padding: 24px 22px 26px;
  background: linear-gradient(180deg, rgba(255, 45, 85, .07), rgba(6, 6, 10, .85) 70%);
  border-top: 2px solid var(--red);
}
.steps__n { display: block; margin-bottom: 18px; font: 700 40px/1 var(--f-mono); color: var(--red); }
.steps h3 { margin: 0 0 10px; font-size: 19px; letter-spacing: .06em; text-transform: uppercase; }
.steps p { margin: 0; font: 400 14.5px/1.75 var(--f-serif); color: var(--bone-2); }

.join__cta { width: var(--wrap); margin: 44px auto 0; display: flex; flex-wrap: wrap; gap: 14px; }
.join__welcome {
  width: var(--wrap); margin: 36px auto 0;
  font: 12px var(--f-mono); letter-spacing: .24em; text-transform: uppercase; color: var(--mute);
}
.join__welcome .jp { margin-right: 10px; font-size: 17px; color: var(--red); letter-spacing: .1em; }

/* ── footer ─────────────────────────────────────────────────── */
.footer {
  display: grid; gap: 22px;
  width: var(--wrap); margin: 0 auto;
  padding: 48px 0 44px;
  border-top: 1px solid var(--line);
}
.footer__brand { display: flex; align-items: center; gap: 14px; }
.footer__name { margin: 0; font-weight: 700; letter-spacing: .3em; }
.footer__name .jp { margin-left: 6px; color: var(--red); letter-spacing: .1em; }
.footer__tag { margin: 2px 0 0; font: 12px var(--f-mono); letter-spacing: .08em; color: var(--mute); }
.footer__legal { max-width: 900px; margin: 0; font: 12px/1.8 var(--f-mono); color: var(--mute); }
.footer__meta { margin: 0; font: 11px var(--f-mono); letter-spacing: .24em; text-transform: uppercase; color: var(--bone-2); }
.footer__meta .jp { margin-left: 10px; color: var(--red); letter-spacing: .2em; }

/* ── toast ──────────────────────────────────────────────────── */
.toast {
  position: fixed; z-index: 150; left: 50%; bottom: 24px;
  max-width: calc(100% - 32px); padding: 12px 18px;
  font: 12.5px/1.5 var(--f-mono); letter-spacing: .04em; color: var(--bone);
  background: rgba(6, 6, 10, .95); border: 1px solid var(--red);
  box-shadow: 0 0 30px rgba(255, 45, 85, .25);
  opacity: 0; transform: translate(-50%, 16px);
  transition: opacity .3s var(--ease), transform .3s var(--ease);
  pointer-events: none;
}
.toast.is-on { opacity: 1; transform: translate(-50%, 0); }

/* ── reveal ─────────────────────────────────────────────────── */
.js .reveal { opacity: 0; transform: translateY(28px); transition: opacity 1s var(--ease), transform 1s var(--ease); }
.js .reveal.is-in { opacity: 1; transform: none; }
.js .chapter__text.reveal { transition-delay: .12s; }
.js .arc-list .reveal:nth-child(2), .js .steps .reveal:nth-child(2) { transition-delay: .08s; }
.js .arc-list .reveal:nth-child(3), .js .steps .reveal:nth-child(3) { transition-delay: .16s; }
.js .arc-list .reveal:nth-child(4), .js .steps .reveal:nth-child(4) { transition-delay: .24s; }

/* ── keyframes ──────────────────────────────────────────────── */
@keyframes blink { 50% { opacity: 0; } }
@keyframes fill { to { transform: scaleX(1); } }
@keyframes pulse { 50% { opacity: .35; } }
@keyframes ping { 0% { box-shadow: 0 0 0 0 rgba(34, 228, 255, .7); } 100% { box-shadow: 0 0 0 12px rgba(34, 228, 255, 0); } }
@keyframes beat { 0% { stroke: #fff; filter: drop-shadow(0 0 10px var(--red)); } 100% { stroke: var(--red); } }
@keyframes grain {
  0%, 100% { transform: translate(0, 0); }
  20% { transform: translate(-3%, 2%); }
  40% { transform: translate(2%, -3%); }
  60% { transform: translate(-2%, -1%); }
  80% { transform: translate(3%, 3%); }
}
@keyframes glitch-a {
  0%, 88%, 100% { clip-path: inset(0 0 100% 0); transform: none; }
  89% { clip-path: inset(12% 0 62% 0); transform: translate(-7px, -1px); }
  91% { clip-path: inset(58% 0 18% 0); transform: translate(6px, 1px); }
  93% { clip-path: inset(34% 0 44% 0); transform: translate(-3px, 0); }
  95% { clip-path: inset(80% 0 4% 0); transform: translate(4px, 0); }
}
@keyframes glitch-b {
  0%, 84%, 100% { clip-path: inset(0 0 100% 0); transform: none; }
  85% { clip-path: inset(66% 0 10% 0); transform: translate(7px, 0); }
  87% { clip-path: inset(20% 0 55% 0); transform: translate(-5px, 0); }
  90% { clip-path: inset(44% 0 40% 0); transform: translate(3px, -1px); }
}
@keyframes restore {
  from { clip-path: inset(0 0 100% 0); filter: brightness(2.4) saturate(0); }
  to { clip-path: inset(0 0 0 0); filter: none; }
}
@keyframes sweep { from { transform: translateY(-100%); } to { transform: translateY(560%); } }
@keyframes scanbar { from { transform: translateX(-100%); } to { transform: translateX(250%); } }
@keyframes flicker { 0%, 100% { opacity: 1; } 4% { opacity: .3; } 6% { opacity: 1; } 48% { opacity: 1; } 50% { opacity: .5; } 52% { opacity: 1; } }
@keyframes shimmer { to { background-position: -200% 0; } }
@keyframes dash-x { to { background-position: 20px 0; } }
@keyframes dash-y { to { background-position: 0 20px; } }

/* ── responsive ─────────────────────────────────────────────── */
@media (max-width: 1180px) {
  .rail { display: none; }
}

@media (max-width: 1024px) {
  .chapter, .chapter:nth-of-type(even) { grid-template-columns: minmax(0, 1fr); }
  .chapter:nth-of-type(even) .chapter__media { order: 0; }
  .chapter__mark, .chapter:nth-of-type(even) .chapter__mark { top: auto; bottom: 0; right: -4%; left: auto; transform: none; }
  .arc-list, .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .specs { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .hero__vertical { display: none; }
}

@media (max-width: 860px) {
  .nav { gap: 14px; }
  .nav__toggle {
    display: grid; place-content: center; gap: 6px;
    width: 42px; height: 42px; padding: 0;
    background: none; border: 1px solid var(--line-2); cursor: pointer;
  }
  .nav__toggle span[aria-hidden] { display: block; width: 18px; height: 1.5px; background: var(--bone); transition: transform .3s var(--ease); }
  .nav.is-open .nav__toggle span:nth-child(1) { transform: translateY(3.75px) rotate(45deg); }
  .nav.is-open .nav__toggle span:nth-child(2) { transform: translateY(-3.75px) rotate(-45deg); }
  .nav__menu {
    position: fixed; inset: var(--nav-h) 0 auto; height: calc(100vh - var(--nav-h)); height: calc(100dvh - var(--nav-h));
    flex-direction: column; gap: 0;
    padding: 20px var(--gutter);
    background: var(--ink);
    opacity: 0; visibility: hidden; transform: translateY(-8px);
    transition: opacity .3s, visibility .3s, transform .3s var(--ease);
  }
  .nav.is-open .nav__menu { opacity: 1; visibility: visible; transform: none; }
  .nav__menu a {
    flex-direction: row; justify-content: space-between; align-items: baseline;
    padding: 20px 0; font-size: 20px;
    border-bottom: 1px solid var(--line);
  }
  .nav__menu a .jp { order: 2; margin: 0; font-size: 14px; }
  .nav__menu a::after { display: none; }

  .hero__art { width: min(96vw, 560px); right: -26vw; top: 40%; opacity: .7; }
  .hero__shade {
    background:
      linear-gradient(0deg, var(--ink) 4%, rgba(6, 6, 10, .78) 46%, rgba(6, 6, 10, .3) 100%),
      linear-gradient(180deg, rgba(6, 6, 10, .6) 0%, rgba(6, 6, 10, 0) 20%);
  }
  .hero__kanji { font-size: clamp(64px, 12vh, 110px); opacity: .75; }

  .flow { grid-template-columns: 1fr; gap: 30px; }
  .flow__node:not(:last-child)::after {
    top: 100%; left: 34px; width: 2px; height: 30px;
    background: repeating-linear-gradient(180deg, var(--red) 0 6px, transparent 6px 10px) 0 0 / 2px 20px;
    animation-name: dash-y;
  }
  .flow__node:not(:last-child)::before { top: calc(100% + 22px); left: 30px; border-color: transparent; border-top-color: var(--red); }
  .protocol__grid { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  :root { --nav-h: 60px; }
  .brand__jp { display: none; }
  .hero__kanji { top: auto; bottom: 30%; font-size: 92px; opacity: .22; filter: none; }
  .hud__stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ecg__label { display: none; }
  .hero__cta .btn { flex: 1 1 auto; }
  .arc-list, .steps { grid-template-columns: 1fr; }
  .arc { min-height: 0; }
  .specs { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .chapter__mark { font-size: 120px; }
  .join__cta .btn { flex: 1 1 auto; }
  .join__art { width: 92vw; right: -22vw; bottom: -46vw; opacity: .35; }
  .term__screen { font-size: 12.5px; padding: 14px 12px 8px; }
  .term__prompt { font-size: 0; }
  .term__prompt::before { content: "~$"; font-size: 12.5px; }
  .term__line--cmd::before { content: "~$ "; }
}

@media (max-width: 380px) {
  .nav__buy { display: none; }
}

@media (min-width: 861px) and (max-height: 860px) {
  .hero__inner { padding: 3.5vh 0 2.5vh; }
  .hero__title { font-size: clamp(64px, min(12.5vw, 17vh), 200px); margin-bottom: 12px; }
  .hero__body { margin-bottom: 24px; }
  .hero__cta { margin-bottom: 16px; }
  .ecg { height: 44px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    transition-delay: 0s !important;
  }
  .js .reveal { opacity: 1; transform: none; }
}