:root {
  --ink: #080b12;
  --ink-2: #0d1320;
  --paper: #f8f5ef;
  --muted: #aeb9bd;
  --gold: #e8dcc2;
  --water: #6a8d92;
  --sakura: #b76e79;
  --line: rgba(248, 245, 239, 0.14);
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.38);
  --px: 50%;
  --py: 20%;
}

* { box-sizing: border-box; }

html {
  min-height: 100%;
  background:
    radial-gradient(circle at 12% 12%, rgba(106, 141, 146, .24), transparent 28rem),
    radial-gradient(circle at 88% 22%, rgba(183, 110, 121, .18), transparent 24rem),
    linear-gradient(135deg, var(--ink), var(--ink-2) 55%, #15121b);
  color: var(--paper);
  font: 16px/1.6 ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body { margin: 0; }

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: .42;
  background:
    radial-gradient(circle at var(--px) var(--py), rgba(232,220,194,.1), transparent 18rem),
    repeating-linear-gradient(0deg, transparent 0 3px, rgba(255,255,255,.012) 4px);
}

a { color: inherit; text-decoration-thickness: .08em; text-underline-offset: .22em; }

.page-shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 56px 0 72px;
}

.hero {
  position: relative;
  min-height: 72vh;
  display: grid;
  align-content: center;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 34px;
  padding: clamp(32px, 7vw, 84px);
  box-shadow: var(--shadow);
  background:
    linear-gradient(145deg, rgba(255,255,255,.08), rgba(255,255,255,.025)),
    repeating-linear-gradient(90deg, transparent 0 34px, rgba(248,245,239,.035) 35px 36px);
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(110deg, transparent 52%, rgba(232,220,194,.035) 52.2%, transparent 52.4%);
}

.hero-kanji {
  position: absolute;
  right: 28px;
  bottom: 28px;
  display: flex;
  align-items: end;
  gap: 10px;
  color: rgba(248,245,239,.2);
}

.hero-kanji strong {
  font: 700 clamp(5rem, 14vw, 11rem)/.72 ui-serif, Georgia, serif;
}

.hero-kanji span {
  writing-mode: vertical-rl;
  font: 8px/1 ui-monospace, monospace;
  letter-spacing: .18em;
}

.enso {
  position: absolute;
  right: clamp(-50px, -3vw, 16px);
  top: clamp(-44px, 5vw, 48px);
  width: min(42vw, 360px);
  opacity: .92;
  filter: drop-shadow(0 20px 60px rgba(232, 220, 194, .18));
}

.kicker {
  margin: 0 0 12px;
  color: var(--gold);
  letter-spacing: .16em;
  text-transform: uppercase;
  font-size: .78rem;
}

h1, h2, h3 { line-height: 1.04; margin: 0; }

h1 {
  max-width: 820px;
  font-size: clamp(3.2rem, 10vw, 7.8rem);
  letter-spacing: -.075em;
}

h2 { font-size: clamp(2rem, 4vw, 3.6rem); letter-spacing: -.05em; }
h3 { font-size: 1.35rem; letter-spacing: -.025em; }

.lead {
  max-width: 720px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: clamp(1.1rem, 2vw, 1.42rem);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.actions a {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 16px;
  background: rgba(248,245,239,.08);
  text-decoration: none;
}

.hero-coordinates {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin-top: 54px;
  color: rgba(248,245,239,.32);
  font: 9px/1.3 ui-monospace, monospace;
  letter-spacing: .11em;
}

.panel, .card {
  border: 1px solid var(--line);
  border-radius: 28px;
  background: rgba(8, 11, 18, .58);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}

.mantra {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  margin: 22px 0;
  overflow: hidden;
  text-align: center;
  color: var(--gold);
}

.mantra span { padding: 18px 10px; background: rgba(248,245,239,.045); }

.observatory {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  margin: 22px 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--line);
  box-shadow: var(--shadow);
}

.observatory article {
  min-height: 150px;
  padding: 22px;
  background: rgba(8,11,18,.84);
}

.observatory .metric {
  display: block;
  color: var(--gold);
  font: 300 clamp(2.8rem, 6vw, 5.2rem)/1 ui-monospace, monospace;
  letter-spacing: -.09em;
}

.observatory p { margin: 14px 0 0; color: var(--paper); }
.observatory small { color: var(--muted); font: 9px/1.4 ui-monospace, monospace; text-transform: uppercase; }
.observatory .pulse { color: #72a8b2; animation: signal 2.4s ease-in-out infinite; }

@keyframes signal {
  50% { opacity: .35; text-shadow: 0 0 28px #72a8b2; }
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 22px;
}

.section-head { grid-column: 1 / -1; margin: 34px 0 4px; }

.card { padding: 26px; min-height: 230px; }
.card p { color: var(--muted); }
.card .tag { color: var(--gold); font-size: .74rem; letter-spacing: .14em; text-transform: uppercase; }
.public { border-color: rgba(106,141,146,.48); }
.gated { border-color: rgba(232,220,194,.42); }

.cosmos {
  margin-top: 22px;
  padding: clamp(20px, 4vw, 42px);
  border: 1px solid var(--line);
  border-radius: 34px;
  overflow: hidden;
  background:
    radial-gradient(circle at 42% 50%, rgba(106,141,146,.12), transparent 40%),
    linear-gradient(150deg, rgba(255,255,255,.055), rgba(255,255,255,.015));
  box-shadow: var(--shadow);
}

.cosmos::before {
  content: "観測 / OBSERVATORY 001";
  display: block;
  margin-bottom: 24px;
  color: rgba(248,245,239,.25);
  font: 9px/1 ui-monospace, monospace;
  letter-spacing: .18em;
}

.cosmos-head {
  display: grid;
  grid-template-columns: 1.25fr .75fr;
  gap: 34px;
  align-items: end;
  margin-bottom: 24px;
}

.cosmos-head > p { margin: 0; color: var(--muted); }

.cosmos-switch {
  display: inline-flex;
  gap: 4px;
  margin: 0 0 14px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(8,11,18,.56);
  max-width: 100%;
  overflow-x: auto;
}

.cosmos-switch button {
  border: 0;
  border-radius: 999px;
  padding: 8px 13px;
  color: var(--muted);
  background: transparent;
  font: 9px/1 ui-monospace, monospace;
  letter-spacing: .1em;
  text-transform: uppercase;
  cursor: pointer;
}

.cosmos-switch button.active {
  color: var(--ink);
  background: var(--gold);
}

.cosmos-stage {
  position: relative;
  min-height: 720px;
  border: 1px solid rgba(248,245,239,.11);
  border-radius: 26px;
  overflow: hidden;
  background:
    linear-gradient(rgba(248,245,239,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(248,245,239,.025) 1px, transparent 1px),
    #080b12;
  background-size: 32px 32px;
}

#research-cosmos {
  display: block;
  width: 100%;
  height: 720px;
  cursor: crosshair;
}

.cosmos-chrome {
  position: absolute;
  inset: 16px 18px auto;
  display: flex;
  justify-content: space-between;
  color: rgba(248,245,239,.28);
  font: 9px/1 ui-monospace, monospace;
  letter-spacing: .16em;
}

.node-detail {
  position: absolute;
  right: 24px;
  bottom: 24px;
  width: min(280px, calc(100% - 48px));
  padding: 22px;
  border: 1px solid rgba(248,245,239,.14);
  border-radius: 20px;
  background: rgba(8,11,18,.82);
  backdrop-filter: blur(22px);
  box-shadow: 0 18px 54px rgba(0,0,0,.42);
}

.node-detail h3 { margin: 8px 0 10px; }
.node-detail p { margin: 0; color: var(--muted); font-size: .92rem; }
.node-detail small, .node-index {
  color: var(--gold);
  font: 9px/1.4 ui-monospace, monospace;
  letter-spacing: .13em;
  text-transform: uppercase;
}
.node-detail small { display: block; margin-top: 16px; color: rgba(248,245,239,.34); }

.live-state {
  position: absolute;
  left: 18px;
  bottom: 16px;
  color: rgba(248,245,239,.3);
  font: 9px/1 ui-monospace, monospace;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.live-state.online { color: #72a8b2; }
.live-state.cached { color: var(--gold); }

.cosmos-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 18px;
  color: var(--muted);
  font: 10px/1 ui-monospace, monospace;
  letter-spacing: .11em;
  text-transform: uppercase;
}

.cosmos-legend span { display: inline-flex; gap: 7px; align-items: center; }
.cosmos-legend i { width: 7px; height: 7px; border-radius: 50%; }
.cosmos-legend .analytic { background: var(--gold); }
.cosmos-legend .algebraic { background: #72a8b2; }
.cosmos-legend .architectural { background: #c77d89; }
.cosmos-legend .boundary { background: #9b8bc4; }

.identity {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: 28px;
  margin-top: 22px;
  padding: 34px;
}

.identity-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.identity-grid p {
  margin: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  color: var(--muted);
  background: rgba(248,245,239,.035);
}

.identity-grid strong { color: var(--gold); }

.manifesto {
  position: relative;
  display: grid;
  grid-template-columns: .32fr 1fr 1fr;
  gap: 30px;
  align-items: end;
  margin-top: 22px;
  padding: clamp(28px, 5vw, 54px);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 34px;
  background:
    radial-gradient(circle at 8% 80%, rgba(183,110,121,.2), transparent 24rem),
    rgba(8,11,18,.62);
  box-shadow: var(--shadow);
}

.manifesto > p:last-child { margin: 0; color: var(--muted); font-size: 1.05rem; }
.manifesto-mark {
  margin: 0;
  color: rgba(232,220,194,.12);
  font: 700 clamp(5rem, 12vw, 10rem)/.7 ui-serif, Georgia, serif;
  writing-mode: vertical-rl;
}

@media (max-width: 820px) {
  .grid, .mantra, .identity, .cosmos-head, .manifesto { grid-template-columns: 1fr; }
  .observatory { grid-template-columns: repeat(2, 1fr); }
  .identity-grid { grid-template-columns: 1fr; }
  .enso { opacity: .22; width: 78vw; }
  .hero { min-height: 64vh; }
  .cosmos-stage, #research-cosmos { min-height: 640px; height: 640px; }
  .node-detail { right: 14px; bottom: 14px; left: 14px; width: auto; }
  .live-state { bottom: 190px; }
  .hero-kanji { opacity: .55; }
  .manifesto-mark { position: absolute; right: 16px; top: 20px; opacity: .45; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; }
  .observatory .pulse { animation: none; }
}