:root {
  /* glacial palette */
  --paper: #ECF1F4;
  --paper-2: #DCE6EB;
  --ice: #C2D5DE;
  --ice-2: #8FAFBE;
  --frost: #E8EFF2;
  --glacier: #547088;
  --glacier-deep: #1F3A4E;
  --basalt: #0E1114;
  --basalt-2: #1B2025;
  --bone: #F4F7F8;
  --muted: #6E8290;
  --muted-2: #95A8B5;
  --rule: #1F3A4E;
  --rule-soft: rgba(31,58,78,0.18);

  /* fire palette */
  --lava: #DC3A28;
  --lava-deep: #8E1E14;
  --lava-glow: #FF4630;
  --magma: #F86036;
  --sulfur: #E8A33F;
  --steam: rgba(232,239,242,0.6);

  /* aurora */
  --aurora-1: #00C896;
  --aurora-2: #5BBFE4;
  --aurora-3: #B86BC9;

  --serif: "Instrument Serif", "Times New Roman", serif;
  --sans: "Space Grotesk", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: "JetBrains Mono", "SF Mono", ui-monospace, Menlo, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--paper); color: var(--basalt); }
body {
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.5;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: var(--lava); color: var(--bone); }

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; padding: 0; }

.mono { font-family: var(--mono); font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase; }
.serif { font-family: var(--serif); font-weight: 400; }

.container {
  max-width: 1480px;
  margin: 0 auto;
  padding: 0 40px;
}
@media (max-width: 720px) { .container { padding: 0 20px; } }

/* ============================================================
   instrument-style topbar
   ============================================================ */
.topbar {
  position: sticky; top: 0; z-index: 60;
  background: var(--basalt);
  color: var(--bone);
  border-bottom: 1px solid var(--basalt-2);
}
.topbar-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  height: 38px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.topbar .left, .topbar .right { display: flex; gap: 22px; align-items: center; }
.topbar .right { justify-content: flex-end; }
.topbar .live { color: var(--lava-glow); display: flex; align-items: center; gap: 6px; }
.topbar .live::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: var(--lava-glow); box-shadow: 0 0 8px var(--lava-glow);
  animation: pulse 1.6s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.7); }
}
.topbar .coords { color: var(--aurora-2); }
.topbar .center { display: flex; align-items: baseline; gap: 8px; font-family: var(--serif); font-size: 16px; text-transform: none; letter-spacing: 0; color: var(--bone); }
.topbar .center .dot { color: var(--lava-glow); }
.topbar a:hover { color: var(--lava-glow); }

/* ============================================================
   masthead
   ============================================================ */
.masthead {
  background: var(--basalt);
  color: var(--bone);
  padding: 24px 0 22px;
  border-bottom: 1px solid var(--basalt-2);
  position: relative;
  overflow: hidden;
}
.masthead::before {
  content: "";
  position: absolute; inset: 0;
  background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='800' height='200'><defs><pattern id='c' width='120' height='80' patternUnits='userSpaceOnUse'><path d='M0,40 Q30,20 60,40 T120,40' stroke='%2300C896' stroke-width='0.5' fill='none' opacity='0.18'/><path d='M0,60 Q30,40 60,60 T120,60' stroke='%235BBFE4' stroke-width='0.5' fill='none' opacity='0.12'/></pattern></defs><rect width='800' height='200' fill='url(%23c)'/></svg>");
  opacity: 0.6;
  pointer-events: none;
}
.masthead-inner {
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  gap: 32px;
  align-items: center;
  position: relative;
}
.wordmark {
  display: flex; align-items: baseline; gap: 12px;
  font-family: var(--serif);
}
.wordmark .mark {
  font-size: 28px; line-height: 1; letter-spacing: -0.015em;
}
.wordmark .mark em { font-style: italic; color: var(--lava-glow); }
.wordmark .sup {
  font-family: var(--mono); font-size: 9px; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--muted-2);
}
.masthead-coords {
  text-align: center;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted-2);
}
.masthead-coords .v { color: var(--bone); }
.masthead-coords .row { display: flex; justify-content: center; gap: 28px; }
.masthead-actions { display: flex; gap: 10px; justify-content: flex-end; align-items: center; }
.tag-pill {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 14px;
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 999px;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ice-2);
}
.tag-pill.lava { color: var(--lava-glow); border-color: rgba(255,70,48,0.35); }
.tag-pill::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: currentColor; box-shadow: 0 0 8px currentColor;
}

/* ============================================================
   hero — split ice / fire
   ============================================================ */
.hero {
  position: relative;
  border-bottom: 1px solid var(--rule);
  overflow: hidden;
}
.hero-stage {
  position: relative;
  min-height: 88vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.hero-ice, .hero-fire {
  position: relative;
  padding: 56px 56px 80px;
  overflow: hidden;
}
.hero-ice {
  background:
    radial-gradient(circle at 30% 0%, rgba(91,191,228,0.35), transparent 60%),
    linear-gradient(180deg, var(--frost) 0%, var(--ice) 100%);
  color: var(--basalt);
}
.hero-fire {
  background:
    radial-gradient(circle at 60% 100%, rgba(255,70,48,0.45), transparent 55%),
    linear-gradient(180deg, var(--basalt-2) 0%, var(--basalt) 100%);
  color: var(--bone);
}
.hero-ice::before {
  content: "";
  position: absolute; inset: 0;
  background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='40' height='40'><g stroke='%231F3A4E' stroke-width='0.4' fill='none' opacity='0.18'><path d='M20,4 L20,36 M4,20 L36,20 M8,8 L32,32 M32,8 L8,32'/><circle cx='20' cy='20' r='1.5'/></g></svg>");
  pointer-events: none;
}
.hero-fire::before {
  content: "";
  position: absolute; inset: 0;
  background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='60' height='104'><g stroke='%23ECF1F4' stroke-width='0.5' fill='none' opacity='0.12'><path d='M0,0 L30,52 L0,104 M30,0 L60,52 L30,104 M60,0 L90,52 L60,104'/></g></svg>");
  pointer-events: none;
}

.hero-eyebrow {
  position: relative; z-index: 2;
  display: flex; gap: 16px; align-items: center;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--glacier);
  margin-bottom: 28px;
}
.hero-fire .hero-eyebrow { color: var(--ice-2); }
.hero-eyebrow .num { color: var(--lava); }
.hero-fire .hero-eyebrow .num { color: var(--lava-glow); }

.hero-title {
  position: relative; z-index: 2;
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(48px, 6.5vw, 96px);
  line-height: 0.95;
  letter-spacing: -0.02em;
  margin: 0;
}
.hero-title em { font-style: italic; color: var(--lava); }
.hero-fire .hero-title em { color: var(--lava-glow); }

.hero-meta {
  position: relative; z-index: 2;
  margin-top: 48px;
  display: flex; flex-direction: column; gap: 12px;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--glacier);
}
.hero-fire .hero-meta { color: var(--ice-2); }
.hero-meta .row { display: flex; justify-content: space-between; padding: 6px 0; border-top: 1px dashed currentColor; }
.hero-meta .row:last-child { border-bottom: 1px dashed currentColor; }
.hero-meta .v { color: var(--basalt); font-weight: 500; }
.hero-fire .hero-meta .v { color: var(--bone); }
.hero-meta .v em { color: var(--lava); font-style: normal; }
.hero-fire .hero-meta .v em { color: var(--lava-glow); }

/* the meeting line — where ice meets fire */
.hero-seam {
  position: absolute;
  top: 0; bottom: 0; left: 50%;
  width: 2px;
  background: linear-gradient(180deg, var(--ice-2) 0%, var(--lava-glow) 50%, var(--lava-deep) 100%);
  z-index: 3;
  transform: translateX(-50%);
}
.hero-steam {
  position: absolute;
  top: 0; bottom: 0; left: 50%;
  width: 200px;
  transform: translateX(-50%);
  z-index: 4;
  pointer-events: none;
  background:
    radial-gradient(ellipse at 50% 30%, var(--steam), transparent 40%),
    radial-gradient(ellipse at 50% 70%, var(--steam), transparent 40%);
  filter: blur(20px);
  mix-blend-mode: screen;
  opacity: 0.5;
}

/* central disc */
.hero-disc-wrap {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 36vmin; height: 36vmin;
  max-width: 480px; max-height: 480px;
  z-index: 5;
  display: flex; align-items: center; justify-content: center;
}
.hero-disc {
  width: 78%; height: 78%; border-radius: 50%;
  background:
    radial-gradient(circle at 50% 40%, #FFE8E2 0%, #FF6E50 25%, #DC3A28 55%, #6E1106 100%);
  box-shadow:
    0 0 80px 20px rgba(255,70,48,0.5),
    0 0 200px 60px rgba(220,58,40,0.25),
    inset 0 0 60px rgba(255,255,255,0.15);
  position: relative;
  transition: opacity 0.012s linear;
}
.hero-disc::after {
  content: "";
  position: absolute; inset: 8%;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 30%, rgba(255,220,210,0.6), transparent 55%);
  mix-blend-mode: screen;
}
.hero-disc-ring {
  position: absolute; inset: 0;
  border-radius: 50%;
  border: 1px solid var(--ice-2);
  opacity: 0.4;
  animation: rotate 60s linear infinite;
}
.hero-disc-ring::before, .hero-disc-ring::after {
  content: ""; position: absolute;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--lava-glow);
  box-shadow: 0 0 10px var(--lava-glow);
}
.hero-disc-ring::before { top: -3px; left: 50%; transform: translateX(-50%); }
.hero-disc-ring::after { bottom: -3px; left: 50%; transform: translateX(-50%); }
@keyframes rotate { from { transform: rotate(0); } to { transform: rotate(360deg); } }

.hero-disc-ticks {
  position: absolute; inset: -28px;
  border-radius: 50%;
  font-family: var(--mono); font-size: 9px; letter-spacing: 0.08em; color: var(--ice-2);
  text-transform: uppercase;
}
.hero-disc-ticks span {
  position: absolute;
  white-space: nowrap;
}
.hero-disc-ticks span:nth-child(1) { top: -16px; left: 50%; transform: translateX(-50%); color: var(--ice-2); }
.hero-disc-ticks span:nth-child(2) { bottom: -16px; left: 50%; transform: translateX(-50%); color: var(--ice-2); }
.hero-disc-ticks span:nth-child(3) { left: -68px; top: 50%; transform: translateY(-50%); color: var(--lava-glow); }
.hero-disc-ticks span:nth-child(4) { right: -68px; top: 50%; transform: translateY(-50%); color: var(--lava-glow); }

/* session triggers */
.session-pill {
  position: relative; z-index: 6;
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 22px;
  background: var(--bone); color: var(--basalt);
  border-radius: 999px;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase;
  transition: background .2s, color .2s;
  margin-top: 24px;
  align-self: flex-start;
  cursor: pointer;
  border: 0;
}
.session-pill:hover { background: var(--lava); color: var(--bone); }
.session-pill::before {
  content: "";
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--lava); box-shadow: 0 0 10px var(--lava);
  animation: pulse 1.6s infinite;
}
.hero-fire .session-pill { background: rgba(255,255,255,0.06); color: var(--bone); border: 1px solid rgba(255,255,255,0.2); }
.hero-fire .session-pill:hover { background: var(--lava); border-color: var(--lava); }

.hero-flexcol { position: relative; z-index: 2; display: flex; flex-direction: column; height: 100%; }
.hero-flexcol .spacer { flex: 1; min-height: 32px; }

/* ============================================================
   spectrometer ticker (full-bleed band)
   ============================================================ */
.spectrum-band {
  background: var(--basalt);
  color: var(--bone);
  border-bottom: 1px solid var(--basalt-2);
  padding: 18px 0;
  overflow: hidden;
}
.spectrum-track {
  display: flex;
  gap: 64px;
  white-space: nowrap;
  animation: marquee 36s linear infinite;
}
.spectrum-track > * { flex-shrink: 0; }
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}
.spec-item {
  display: inline-flex; align-items: baseline; gap: 14px;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ice-2);
}
.spec-item .v { font-family: var(--serif); font-size: 22px; letter-spacing: -0.01em; color: var(--bone); }
.spec-item .v.lava { color: var(--lava-glow); }
.spec-item .v.aurora { color: var(--aurora-2); }
.spec-item .v.amber { color: var(--sulfur); }
.spec-item .dot { width: 4px; height: 4px; background: var(--lava); border-radius: 50%; }

/* ============================================================
   funding strip
   ============================================================ */
.funding {
  padding: 32px 0;
  border-bottom: 1px solid var(--rule);
  background: var(--paper);
  position: relative;
}
.funding-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr auto;
  gap: 32px;
  align-items: end;
}
.bar {
  height: 6px; background: rgba(31,58,78,0.15); position: relative; margin-top: 14px;
  border-radius: 3px; overflow: hidden;
}
.bar > div {
  position: absolute; left: 0; top: 0; bottom: 0;
  background: linear-gradient(90deg, var(--glacier-deep), var(--lava));
}
.bar > div::after {
  content: ""; position: absolute; right: -3px; top: -4px; width: 3px; height: 14px;
  background: var(--lava-glow); box-shadow: 0 0 8px var(--lava-glow);
}
.stat .v {
  font-family: var(--serif); font-size: 36px; line-height: 1; letter-spacing: -0.015em;
  font-feature-settings: "tnum"; display: block;
}
.stat .v.lava { color: var(--lava); }
.stat .v.glacier { color: var(--glacier-deep); }
.stat .l {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--muted); margin-top: 8px; display: block;
}
.pledge-cta {
  display: inline-flex; align-items: center; gap: 12px;
  background: var(--basalt); color: var(--bone);
  padding: 14px 22px;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase;
  border-radius: 999px;
  transition: background .2s;
}
.pledge-cta:hover { background: var(--lava); }
.pledge-cta .arrow {
  width: 20px; height: 1px; background: currentColor; position: relative;
}
.pledge-cta .arrow::after { content: ""; position: absolute; right: 0; top: -3px; width: 7px; height: 7px; border-right: 1px solid currentColor; border-top: 1px solid currentColor; transform: rotate(45deg); }

/* ============================================================
   sections
   ============================================================ */
section.block {
  padding: 96px 0;
  border-bottom: 1px solid var(--rule);
  position: relative;
}
section.block.dark {
  background: var(--basalt);
  color: var(--bone);
  border-bottom-color: var(--basalt-2);
}
section.block.ice {
  background:
    linear-gradient(180deg, var(--frost), var(--paper) 60%);
}

.section-head {
  display: grid;
  grid-template-columns: 1fr 4fr;
  gap: 64px;
  align-items: baseline;
  margin-bottom: 64px;
}
.section-head .label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
section.block.dark .section-head .label { color: var(--ice-2); }
.section-head .label .num { color: var(--lava); margin-right: 10px; }
.section-head h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(40px, 5.5vw, 72px);
  line-height: 0.98;
  letter-spacing: -0.018em;
  margin: 0;
  max-width: 22ch;
  text-wrap: balance;
}
.section-head h2 em { font-style: italic; color: var(--lava); }
section.block.dark .section-head h2 em { color: var(--lava-glow); }
.section-head .is-title {
  display: block;
  font-style: italic;
  font-size: 0.42em;
  color: var(--glacier);
  margin-top: 12px;
  letter-spacing: 0;
}
section.block.dark .section-head .is-title { color: var(--ice-2); }

/* ============================================================
   story
   ============================================================ */
.story-grid {
  display: grid;
  grid-template-columns: 1fr 4fr;
  gap: 64px;
}
.story-grid .aside {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  line-height: 1.7;
}
.story-grid .aside hr { border: 0; border-top: 1px solid var(--rule-soft); margin: 16px 0; }
.story-grid .aside b { color: var(--basalt); font-weight: 500; }
.story-body {
  font-family: var(--serif);
  font-size: 22px;
  line-height: 1.42;
  letter-spacing: -0.003em;
  max-width: 38ch;
  text-wrap: pretty;
}
.story-body p + p { margin-top: 1em; }
.story-body em { font-style: italic; }
.story-body .lift {
  font-size: 32px; line-height: 1.2; color: var(--lava); display: block; margin: 24px 0;
}
.story-body strong {
  font-weight: 400;
  background: linear-gradient(transparent 60%, rgba(220,58,40,0.18) 60%);
}

/* ============================================================
   science — naturalist scientific instrument
   ============================================================ */
.fact-board {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}
.fact {
  background: var(--paper);
  padding: 32px 28px;
  position: relative;
  min-height: 220px;
  display: flex; flex-direction: column; justify-content: space-between;
}
.fact .ident {
  font-family: var(--mono); font-size: 9px; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--muted);
}
.fact .ident .seq { color: var(--lava); }
.fact .big {
  font-family: var(--serif); font-size: 80px; line-height: 0.9; letter-spacing: -0.025em;
}
.fact .big sup { font-size: 0.32em; vertical-align: top; }
.fact .big.lava { color: var(--lava); }
.fact .big.glacier { color: var(--glacier-deep); }
.fact .cap {
  font-family: var(--sans); font-size: 13px; line-height: 1.4; color: var(--basalt-2);
  max-width: 28ch;
}
.fact .cap b { font-weight: 500; color: var(--basalt); }

/* spectrum visualization */
.spectrum-viz {
  margin-top: 64px;
  border: 1px solid var(--rule);
  background: var(--basalt);
  color: var(--bone);
  padding: 32px 36px 28px;
  position: relative;
  overflow: hidden;
}
.spectrum-viz .header {
  display: flex; justify-content: space-between; align-items: baseline;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ice-2);
  margin-bottom: 24px;
}
.spectrum-viz .header h3 {
  font-family: var(--serif); font-size: 32px; font-weight: 400; line-height: 1; margin: 0;
  letter-spacing: -0.015em; color: var(--bone);
}
.spectrum-viz .header h3 em { font-style: italic; color: var(--lava-glow); }
.spectrum-graph {
  display: flex; align-items: flex-end;
  height: 220px;
  gap: 1px;
  padding-bottom: 28px;
  position: relative;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.spectrum-graph .bar {
  flex: 1;
  background: linear-gradient(180deg, currentColor, transparent);
  position: relative;
  transition: height 0.8s cubic-bezier(.2,.7,.2,1);
}
.spectrum-graph .bar.peak {
  outline: 1px solid var(--lava-glow);
  outline-offset: 0;
  box-shadow: 0 0 30px rgba(255,70,48,0.5);
}
.spectrum-graph .bar.peak::after {
  content: "660 nm";
  position: absolute; bottom: 100%; left: 50%; transform: translateX(-50%);
  font-family: var(--mono); font-size: 9px; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--lava-glow); white-space: nowrap; margin-bottom: 8px;
}
.spectrum-graph .label {
  position: absolute; bottom: 0; font-family: var(--mono); font-size: 9px; letter-spacing: 0.08em;
  color: var(--ice-2); text-transform: uppercase;
}

/* pathway with map-like contour */
.pathway-map {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-top: 64px;
  border: 1px solid var(--rule);
  background: var(--paper-2);
  position: relative;
  overflow: hidden;
}
.pathway-map::before {
  content: "";
  position: absolute; inset: 0;
  background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='120' height='120'><g stroke='%231F3A4E' stroke-width='0.6' fill='none' opacity='0.22'><path d='M0,60 Q30,40 60,60 T120,60'/><path d='M0,80 Q30,60 60,80 T120,80'/><path d='M0,40 Q30,20 60,40 T120,40'/><path d='M0,100 Q30,90 60,100 T120,100'/><path d='M0,20 Q30,8 60,20 T120,20'/></g></svg>");
  pointer-events: none;
}
.path-node {
  padding: 36px 32px;
  position: relative;
  border-right: 1px solid var(--rule);
  display: flex; flex-direction: column; gap: 16px;
  background: transparent;
}
.path-node:last-child { border-right: 0; }
.path-node .ident {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--lava);
  display: flex; align-items: center; gap: 10px;
}
.path-node .ident::before {
  content: ""; width: 14px; height: 14px; border-radius: 50%;
  border: 1px solid var(--lava); background: var(--lava); opacity: 0.6;
}
.path-node h4 {
  font-family: var(--serif); font-size: 42px; font-weight: 400; line-height: 0.95; margin: 0;
  letter-spacing: -0.015em;
}
.path-node h4 em { font-style: italic; }
.path-node .is { font-family: var(--serif); font-style: italic; font-size: 16px; color: var(--glacier); }
.path-node .desc { font-size: 13px; line-height: 1.5; color: var(--basalt-2); max-width: 30ch; }

/* flicker demo */
.flicker-demo {
  margin-top: 80px;
  border: 1px solid var(--rule);
  background: var(--paper);
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  min-height: 420px;
  overflow: hidden;
}
.flicker-controls {
  padding: 36px 32px;
  display: flex; flex-direction: column; gap: 24px;
  border-right: 1px solid var(--rule);
  background: var(--frost);
}
.flicker-controls h3 { font-family: var(--serif); font-size: 36px; font-weight: 400; line-height: 1.0; margin: 0; letter-spacing: -0.015em; }
.flicker-controls h3 em { font-style: italic; color: var(--lava); }
.flicker-controls p { font-size: 13px; line-height: 1.55; color: var(--basalt-2); margin: 0; max-width: 32ch; }
.knob { display: flex; flex-direction: column; gap: 10px; }
.knob .row { display: flex; justify-content: space-between; align-items: baseline; }
.knob .row .name { font-family: var(--mono); font-size: 9px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }
.knob .row .val { font-family: var(--serif); font-size: 22px; font-feature-settings: "tnum"; }
.knob .row .val em { color: var(--lava); font-style: italic; }
input[type="range"] {
  -webkit-appearance: none; appearance: none;
  background: transparent; width: 100%; height: 18px;
}
input[type="range"]::-webkit-slider-runnable-track { height: 1px; background: var(--rule); }
input[type="range"]::-moz-range-track { height: 1px; background: var(--rule); }
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 14px; height: 14px; border-radius: 50%; background: var(--basalt); margin-top: -7px; cursor: grab;
  transition: background .2s, transform .15s;
}
input[type="range"]:active::-webkit-slider-thumb { background: var(--lava); transform: scale(1.2); }
input[type="range"]::-moz-range-thumb { width: 14px; height: 14px; border-radius: 50%; background: var(--basalt); border: 0; cursor: grab; }
.color-pick { display: flex; gap: 8px; }
.color-pick button {
  width: 28px; height: 28px; border-radius: 50%; border: 1px solid var(--rule); position: relative; cursor: pointer;
}
.color-pick button.active::after { content: ""; position: absolute; inset: -5px; border: 1px solid var(--basalt); border-radius: 50%; }
.color-pick button[data-c="white"] { background: #F4F7F8; }
.color-pick button[data-c="blue"]  { background: #5BBFE4; }
.color-pick button[data-c="green"] { background: #00C896; }
.color-pick button[data-c="red"]   { background: var(--lava); }

.flicker-stage {
  background: var(--basalt);
  position: relative;
  overflow: hidden;
  display: flex; align-items: center; justify-content: center;
}
.flicker-stage::before {
  content: "";
  position: absolute; inset: 0;
  background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='120' height='120'><g stroke='%23ECF1F4' stroke-width='0.4' fill='none' opacity='0.04'><circle cx='60' cy='60' r='15'/><circle cx='60' cy='60' r='30'/><circle cx='60' cy='60' r='45'/><line x1='60' y1='0' x2='60' y2='120'/><line x1='0' y1='60' x2='120' y2='60'/></g></svg>");
}
.flicker-orb {
  width: 60%; aspect-ratio: 1; border-radius: 50%;
  transition: opacity 0.01s linear, background 0.4s, box-shadow 0.3s;
  position: relative;
}
.flicker-orb::after {
  content: ""; position: absolute; inset: 12%; border-radius: 50%;
  background: radial-gradient(circle at 50% 30%, rgba(255,255,255,0.5), transparent 55%);
  mix-blend-mode: screen;
}
.flicker-readout {
  position: absolute; top: 20px; left: 24px; right: 24px;
  display: flex; justify-content: space-between;
  font-family: var(--mono); font-size: 9px; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--ice-2);
}
.flicker-readout .live { color: var(--lava-glow); display: flex; align-items: center; gap: 6px; }
.flicker-readout .live::before { content: ""; width: 5px; height: 5px; background: var(--lava-glow); border-radius: 50%; box-shadow: 0 0 8px var(--lava-glow); animation: pulse 1.6s infinite; }
.flicker-warning {
  position: absolute; bottom: 20px; left: 24px; right: 24px;
  font-family: var(--mono); font-size: 9px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--muted);
}
.flicker-grid-overlay {
  position: absolute; inset: 0;
  pointer-events: none;
}
.flicker-grid-overlay .crosshair {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: 80%; height: 80%;
  border: 1px dashed rgba(255,255,255,0.08);
  border-radius: 50%;
}

/* seismograph timeline */
.seismic-timeline {
  margin-top: 80px;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 32px 0;
  display: grid;
  grid-template-columns: 1fr 4fr;
  gap: 64px;
}
.seismic-timeline .legend h3 {
  font-family: var(--serif); font-weight: 400; font-size: 36px; line-height: 1.05; margin: 0 0 16px;
  letter-spacing: -0.015em;
}
.seismic-timeline .legend h3 em { font-style: italic; color: var(--lava); }
.seismic-timeline .legend .is { font-family: var(--serif); font-style: italic; color: var(--glacier); }
.seismic-timeline .legend p { font-size: 13px; line-height: 1.5; color: var(--basalt-2); margin-top: 20px; max-width: 30ch; }

.seismic-track {
  position: relative;
  height: 200px;
  background:
    linear-gradient(180deg, transparent calc(50% - 0.5px), var(--rule-soft) calc(50%), transparent calc(50% + 0.5px));
}
.seismic-svg { width: 100%; height: 100%; display: block; }
.seismic-events {
  display: flex; justify-content: space-between;
  margin-top: 18px;
  font-family: var(--mono); font-size: 9px; letter-spacing: 0.08em; text-transform: uppercase;
}
.seismic-event {
  display: flex; flex-direction: column; gap: 4px; text-align: center; flex: 1;
  position: relative;
}
.seismic-event::before {
  content: ""; position: absolute; top: -22px; left: 50%; width: 1px; height: 14px; background: var(--lava); transform: translateX(-50%);
}
.seismic-event .t { color: var(--lava); }
.seismic-event .e { color: var(--basalt); font-family: var(--serif); font-size: 13px; text-transform: none; letter-spacing: -0.005em; line-height: 1.25; padding: 0 4px; }
.seismic-event .m { color: var(--muted); }

/* ============================================================
   hardware — instrument
   ============================================================ */
.hw-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 64px;
}
.hw-img {
  aspect-ratio: 4/5;
  background:
    radial-gradient(circle at 50% 30%, rgba(255,70,48,0.18), transparent 50%),
    linear-gradient(180deg, var(--basalt-2), var(--basalt));
  position: relative;
  overflow: hidden;
  border: 1px solid var(--rule);
}
.hw-img-grid {
  position: absolute; inset: 0;
  background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='40' height='40'><path d='M40,0 L0,0 L0,40' stroke='%23ECF1F4' stroke-width='0.3' fill='none' opacity='0.12'/></svg>");
  pointer-events: none;
}
.hw-cap {
  position: absolute; font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ice-2);
}
.hw-cap.tl { top: 18px; left: 18px; }
.hw-cap.br { bottom: 18px; right: 18px; }
.hw-cap.tr { top: 18px; right: 18px; color: var(--lava-glow); }
.hw-visor {
  position: absolute; left: 14%; right: 14%; top: 38%;
  height: 20%;
  background: linear-gradient(180deg, #FF6E50, #6E1106);
  border-radius: 80px;
  box-shadow: 0 0 80px 12px rgba(255,70,48,0.5);
}
.hw-visor::before, .hw-visor::after {
  content: ""; position: absolute; top: 50%; transform: translateY(-50%);
  width: 26%; height: 60%; background: rgba(255,255,255,0.1); border-radius: 40px;
}
.hw-visor::before { left: 6%; }
.hw-visor::after { right: 6%; }

.hw-specs h3 { font-family: var(--serif); font-weight: 400; font-size: 48px; line-height: 0.95; letter-spacing: -0.018em; margin: 0 0 28px; }
.hw-specs h3 em { font-style: italic; color: var(--lava); }
.hw-specs .is { display: block; font-style: italic; font-size: 18px; color: var(--glacier); margin-top: 6px; }
.spec-row {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  border-top: 1px solid var(--rule-soft);
  padding: 16px 0;
  gap: 24px;
  align-items: baseline;
}
.spec-row:last-child { border-bottom: 1px solid var(--rule-soft); }
.spec-row .k { font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.spec-row .v { font-family: var(--serif); font-size: 22px; line-height: 1.15; letter-spacing: -0.005em; }
.spec-row .v small { font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); margin-left: 8px; }

/* ============================================================
   pledges
   ============================================================ */
.pledges {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 16px;
}
.pledge {
  grid-column: span 4;
  border: 1px solid var(--rule);
  background: var(--paper);
  padding: 28px 26px 0;
  display: flex; flex-direction: column; gap: 18px;
  position: relative;
  cursor: pointer;
  transition: transform .25s, background .3s, color .3s;
}
.pledge:hover { transform: translateY(-3px); }
.pledge.selected {
  background: var(--basalt); color: var(--bone);
}
.pledge.selected .mono { color: var(--ice-2); }
.pledge.selected .pledge-name em { color: var(--lava-glow); }
.pledge.selected .pledge-meta { background: rgba(255,255,255,0.04); border-top-color: rgba(255,255,255,0.08); }
.pledge.selected .price-row { border-color: rgba(255,255,255,0.1); }
.pledge.selected .perk-list li { border-color: rgba(255,255,255,0.08); }
.pledge.selected .price-row .price { color: var(--lava-glow); }
.pledge.selected .pledge-availability { background: rgba(255,255,255,0.08); }

.pledge .tag {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--muted);
  display: inline-flex; align-items: center; gap: 8px;
}
.pledge .tag.lava { color: var(--lava); }
.pledge.selected .tag.lava { color: var(--lava-glow); }
.pledge .tag::before { content: "·"; }
.pledge-name { font-family: var(--serif); font-size: 32px; font-weight: 400; line-height: 1; margin: 0; letter-spacing: -0.01em; }
.pledge-name em { color: var(--muted); font-size: 0.55em; display: block; margin-top: 4px; font-style: italic; }
.price-row {
  display: flex; align-items: baseline; gap: 14px;
  border-top: 1px solid var(--rule-soft); border-bottom: 1px solid var(--rule-soft);
  padding: 14px 0;
}
.price-row .price { font-family: var(--serif); font-size: 44px; line-height: 1; letter-spacing: -0.02em; }
.price-row .currency { font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.price-row .strike { text-decoration: line-through; color: var(--muted); font-family: var(--serif); font-size: 18px; }
.perk-list { list-style: none; margin: 0; padding: 0; }
.perk-list li {
  padding: 10px 0;
  border-top: 1px solid var(--rule-soft);
  font-size: 13px;
  line-height: 1.45;
  display: grid; grid-template-columns: 14px 1fr; gap: 12px;
}
.perk-list li:first-child { border-top: 0; }
.perk-list li::before { content: ""; width: 6px; height: 6px; background: var(--lava); border-radius: 50%; margin-top: 6px; }
.pledge.selected .perk-list li::before { background: var(--lava-glow); }
.pledge-availability {
  height: 2px; background: rgba(31,58,78,0.1); position: relative; margin-top: 4px;
}
.pledge-availability > div { position: absolute; left: 0; top: 0; bottom: 0; background: var(--lava); }
.pledge-meta {
  display: flex; justify-content: space-between;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.06em; text-transform: uppercase;
  background: rgba(31,58,78,0.04);
  padding: 12px 14px;
  margin: 0 -26px;
  border-top: 1px solid var(--rule-soft);
  color: var(--muted);
}
.pledge-meta .right { color: var(--basalt); }
.pledge.selected .pledge-meta .right { color: var(--bone); }
.pledge.span-6 { grid-column: span 6; }

.pledge-confirm {
  margin-top: 32px;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  padding: 22px 28px;
  background: var(--basalt); color: var(--bone);
  border-radius: 4px;
}
.pledge-confirm .label { font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ice-2); }
.pledge-confirm .name { font-family: var(--serif); font-size: 26px; margin-top: 4px; }
.pledge-confirm .name em { font-style: italic; color: var(--ice-2); }
.pledge-confirm .total { font-family: var(--serif); font-size: 36px; letter-spacing: -0.01em; }
.pledge-confirm button {
  background: var(--lava); color: var(--bone);
  padding: 14px 22px;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase;
  border-radius: 999px;
  transition: background .2s;
}
.pledge-confirm button:hover { background: var(--lava-glow); }

/* stretch goals */
.stretch {
  display: grid; grid-template-columns: 1fr 1fr 1fr 1fr; gap: 24px; margin-top: 24px;
}
.stretch-item {
  border-top: 1px solid var(--rule);
  padding-top: 18px;
}
.stretch-item.locked { opacity: 0.45; }
.stretch-item .amt { font-family: var(--serif); font-size: 28px; letter-spacing: -0.01em; }
.stretch-item .name { font-family: var(--mono); font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase; margin-top: 8px; max-width: 24ch; line-height: 1.5; }
.stretch-item .status { font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--lava); margin-top: 14px; }
.stretch-item.locked .status { color: var(--muted); }

/* ============================================================
   aurora interlude
   ============================================================ */
.aurora {
  position: relative;
  padding: 88px 0;
  background: var(--basalt);
  color: var(--bone);
  overflow: hidden;
  border-bottom: 1px solid var(--basalt-2);
}
.aurora::before {
  content: "";
  position: absolute; left: -10%; right: -10%; top: 0; bottom: 0;
  background:
    radial-gradient(ellipse 60% 30% at 20% 30%, rgba(0,200,150,0.4), transparent 60%),
    radial-gradient(ellipse 80% 35% at 70% 50%, rgba(91,191,228,0.35), transparent 60%),
    radial-gradient(ellipse 70% 30% at 50% 80%, rgba(184,107,201,0.3), transparent 60%);
  filter: blur(40px);
  animation: aurora-shift 22s ease-in-out infinite alternate;
  pointer-events: none;
}
@keyframes aurora-shift {
  from { transform: translate(0, 0) scale(1); opacity: 0.7; }
  to { transform: translate(8%, -4%) scale(1.1); opacity: 1; }
}
.aurora-inner {
  position: relative; z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: end;
}
.aurora h2 {
  font-family: var(--serif); font-weight: 400; font-size: clamp(40px, 5.5vw, 80px); line-height: 0.98;
  letter-spacing: -0.018em; margin: 0; max-width: 14ch;
}
.aurora h2 em { font-style: italic; color: var(--aurora-2); }
.aurora h2 .lava { font-style: italic; color: var(--lava-glow); }
.aurora .is {
  display: block; font-style: italic; font-size: 0.32em; color: var(--ice-2); margin-top: 16px; letter-spacing: 0;
}
.aurora-stats {
  display: flex; gap: 56px; flex-wrap: wrap;
}
.aurora-stat .v { font-family: var(--serif); font-size: 56px; line-height: 1; letter-spacing: -0.02em; color: var(--bone); }
.aurora-stat .v em { color: var(--lava-glow); font-style: italic; }
.aurora-stat .l {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ice-2); margin-top: 10px;
}

/* ============================================================
   team — naturalist field cards
   ============================================================ */
.team {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.member {
  border: 1px solid var(--rule);
  background: var(--paper);
  padding: 0 24px 24px;
}
.member-photo {
  aspect-ratio: 1/1;
  background:
    linear-gradient(180deg, var(--glacier-deep), var(--basalt));
  margin: 0 -24px 20px;
  position: relative;
  overflow: hidden;
}
.member-photo::before {
  content: ""; position: absolute; inset: 0;
  background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='40' height='40'><g stroke='%23ECF1F4' stroke-width='0.3' fill='none' opacity='0.12'><path d='M40,0 L0,0 L0,40'/></g></svg>");
}
.member-photo .id {
  position: absolute; top: 14px; left: 14px;
  font-family: var(--mono); font-size: 9px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ice-2);
}
.member-photo .id .seq { color: var(--lava-glow); }
.member-photo .ph {
  position: absolute; bottom: 14px; left: 14px; right: 14px;
  font-family: var(--mono); font-size: 9px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--muted-2);
}
.member h4 { font-family: var(--serif); font-size: 28px; font-weight: 400; line-height: 1; margin: 14px 0 0; letter-spacing: -0.01em; }
.member .role { font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--lava); margin-top: 8px; }
.member .bio { font-size: 13px; line-height: 1.5; color: var(--basalt-2); margin-top: 14px; }

/* ============================================================
   faq
   ============================================================ */
.faq-list { border-top: 1px solid var(--rule); }
.faq-item { border-bottom: 1px solid var(--rule); }
.faq-q {
  width: 100%;
  display: grid;
  grid-template-columns: 60px 1fr 30px;
  text-align: left;
  padding: 24px 0;
  align-items: baseline;
  gap: 24px;
  transition: color .2s;
  cursor: pointer;
}
.faq-q:hover { color: var(--lava); }
.faq-q .num { font-family: var(--mono); font-size: 11px; letter-spacing: 0.06em; color: var(--muted); }
.faq-q .q { font-family: var(--serif); font-size: 26px; line-height: 1.15; letter-spacing: -0.005em; }
.faq-q .q em { font-style: italic; }
.faq-q .sign { font-family: var(--serif); font-size: 28px; line-height: 1; justify-self: end; transition: transform .25s; }
.faq-item.open .faq-q .sign { transform: rotate(45deg); color: var(--lava); }
.faq-a {
  display: grid; grid-template-columns: 60px 1fr 30px; gap: 24px;
  max-height: 0; overflow: hidden;
  transition: max-height .35s ease, padding .35s ease;
}
.faq-item.open .faq-a { max-height: 500px; padding: 0 0 28px; }
.faq-a > div:nth-child(2) {
  font-size: 14px; line-height: 1.6; color: var(--basalt-2); max-width: 64ch; text-wrap: pretty;
}

/* risks */
.risks-grid { display: grid; grid-template-columns: 1fr 2fr; gap: 64px; }
.risks-body { font-family: var(--serif); font-size: 22px; line-height: 1.45; max-width: 50ch; text-wrap: pretty; }
.risks-body p + p { margin-top: 1em; }
.risks-body em { font-style: italic; }
.risks-list { font-family: var(--mono); font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); line-height: 1.7; }
.risks-list hr { border: 0; border-top: 1px solid var(--rule-soft); margin: 14px 0; }
.risks-list b { color: var(--basalt); font-weight: 500; }

/* ============================================================
   footer
   ============================================================ */
footer {
  padding: 80px 0 40px;
  background: var(--basalt);
  color: var(--bone);
  position: relative;
  overflow: hidden;
}
footer::before {
  content: "";
  position: absolute; left: 0; right: 0; top: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--lava), transparent);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 80px;
}
.footer-brand .mark { font-family: var(--serif); font-size: 36px; letter-spacing: -0.015em; }
.footer-brand .mark em { color: var(--lava-glow); font-style: italic; }
.footer-brand .tagline { font-family: var(--serif); font-style: italic; color: var(--ice-2); margin-top: 8px; max-width: 30ch; }
.footer-brand .coords { font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted-2); margin-top: 24px; line-height: 1.7; }
.footer-brand .coords .v { color: var(--bone); }
.footer-col h5 { font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ice-2); font-weight: 500; margin: 0 0 18px; }
.footer-col ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; font-size: 13px; }
.footer-col a:hover { color: var(--lava-glow); }
.footer-bottom {
  display: flex; justify-content: space-between;
  padding-top: 24px;
  border-top: 1px solid rgba(236,241,244,0.12);
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--muted-2);
}
.footer-bottom .right { display: flex; gap: 24px; }

/* ============================================================
   sticky pledge
   ============================================================ */
.sticky-pledge {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--basalt); color: var(--bone);
  padding: 18px 22px;
  border-radius: 4px;
  display: flex; flex-direction: column; gap: 6px;
  z-index: 40;
  width: 280px;
  transform: translateY(140%);
  transition: transform .4s cubic-bezier(.2,.7,.2,1);
  box-shadow: 0 30px 60px -20px rgba(14,17,20,0.5);
  border: 1px solid var(--basalt-2);
}
.sticky-pledge.show { transform: translateY(0); }
.sticky-pledge .top { display: flex; justify-content: space-between; font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ice-2); }
.sticky-pledge .mid { font-family: var(--serif); font-size: 24px; line-height: 1.1; }
.sticky-pledge .mid em { color: var(--lava-glow); font-style: italic; font-size: 14px; }
.sticky-pledge .bar { height: 3px; background: rgba(255,255,255,0.1); margin-top: 6px; border-radius: 2px; overflow: hidden; }
.sticky-pledge .bar > div { height: 100%; background: linear-gradient(90deg, var(--glacier), var(--lava)); }
.sticky-pledge .row { display: flex; justify-content: space-between; align-items: center; margin-top: 8px; }
.sticky-pledge .row a {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase;
  background: var(--lava); padding: 8px 12px; border-radius: 999px;
  transition: background .2s;
}
.sticky-pledge .row a:hover { background: var(--lava-glow); }

/* ============================================================
   session overlay
   ============================================================ */
.session {
  position: fixed; inset: 0;
  background: #050000;
  z-index: 100;
  display: flex; align-items: center; justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.6s ease;
}
.session.show { opacity: 1; pointer-events: auto; }

.session-disc {
  width: min(60vmin, 720px);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 45%, #FFE0D6 0%, #FF6E50 22%, #DC3A28 55%, #6E1106 100%);
  box-shadow:
    0 0 200px 60px rgba(220,58,40,0.4),
    0 0 400px 120px rgba(220,58,40,0.15);
  position: relative;
}
.session-disc::after {
  content: ""; position: absolute; inset: 10%;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 30%, rgba(255,220,210,0.6), transparent 55%);
  mix-blend-mode: screen;
}
.session-ring {
  position: absolute; inset: -40px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.06);
  pointer-events: none;
}
.session-ring::after {
  content: ""; position: absolute; inset: 28px;
  border-radius: 50%;
  border: 1px dashed rgba(255,255,255,0.04);
}
.session-top {
  position: absolute; top: 36px; left: 36px; right: 36px;
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase;
  color: rgba(255,120,110,0.6);
}
.session-top .live { display: flex; align-items: center; gap: 8px; }
.session-top .live::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: #FF6E50; box-shadow: 0 0 8px #FF6E50;
  animation: pulse 1.6s infinite;
}
.session-top .right { display: flex; gap: 28px; }
.session-bottom {
  position: absolute; bottom: 36px; left: 36px; right: 36px;
  display: flex; justify-content: space-between; align-items: flex-end;
  color: rgba(255,120,110,0.55);
}
.session-time {
  font-family: var(--serif); font-size: 72px; line-height: 1; letter-spacing: -0.025em;
  color: #FF6E50; font-feature-settings: "tnum";
}
.session-time .small {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase;
  color: rgba(255,120,110,0.45); display: block; margin-top: 8px;
}
.session-coords {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase;
  color: rgba(255,120,110,0.4); margin-top: 4px;
}
.session-instruction {
  font-family: var(--serif); font-style: italic; font-size: 22px; line-height: 1.3;
  color: rgba(255,180,170,0.7); max-width: 26ch; text-align: right; text-wrap: pretty;
}
.session-instruction .is {
  display: block; font-size: 16px; color: rgba(255,120,110,0.5);
  margin-bottom: 16px; font-style: italic;
}
.session-exit {
  position: absolute; top: 36px; right: 36px;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase;
  color: rgba(255,120,110,0.5);
  border: 1px solid rgba(255,120,110,0.25);
  padding: 8px 14px; border-radius: 999px;
  transition: color .2s, border-color .2s;
}
.session-exit:hover { color: #FF6E50; border-color: rgba(255,110,80,0.5); }

/* ============================================================
   responsive
   ============================================================ */
@media (max-width: 960px) {
  .hero-stage { grid-template-columns: 1fr; }
  .hero-seam { left: 0; right: 0; top: 50%; bottom: auto; width: 100%; height: 2px; background: linear-gradient(90deg, var(--ice-2), var(--lava-glow), var(--lava-deep)); transform: none; }
  .hero-steam { display: none; }
  .hero-disc-wrap { display: none; }
  .funding-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  .funding-grid > *:first-child { grid-column: 1 / -1; }
  .section-head, .story-grid, .seismic-timeline, .hw-grid, .risks-grid, .aurora-inner, .pledge-confirm { grid-template-columns: 1fr; gap: 32px; }
  .pledges, .team, .footer-grid, .stretch, .pathway-map, .fact-board, .flicker-demo { grid-template-columns: 1fr 1fr; }
  .pledge, .fact, .stretch-item, .member, .footer-col { grid-column: span 1; }
  .pledge.span-6, .pledge { grid-column: span 2; }
  section.block { padding: 56px 0; }
  .masthead-inner { grid-template-columns: 1fr; gap: 16px; text-align: left; }
  .masthead-coords { text-align: left; }
  .masthead-coords .row { justify-content: flex-start; }
  .masthead-actions { justify-content: flex-start; }
  .sticky-pledge { display: none; }
}