:root {
  --void: #030306;
  --cyan: #00f0ff;
  --cyan-soft: rgba(0, 240, 255, 0.45);
  --cyan-ghost: rgba(0, 240, 255, 0.08);
  --amber: #ffb432;
  --amber-soft: rgba(255, 180, 50, 0.5);
  --text: rgba(210, 214, 222, 0.88);
  --text-dim: rgba(120, 128, 140, 0.75);
  --text-bright: #f2f4f8;
  --glass: rgba(8, 10, 16, 0.38);
  --mono: ui-monospace, "Cascadia Code", "Cascadia Mono", "SF Mono", Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", sans-serif;
  --nav-w: clamp(4.5rem, 11vw, 7rem);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--sans);
  background: var(--void);
  color: var(--text);
  overflow-x: hidden;
  line-height: 1.6;
}

#physics-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.instrument-layer {
  position: fixed;
  inset: 0;
  z-index: 5;
  pointer-events: none;
}

.corner-reticle {
  position: absolute;
  width: 28px;
  height: 28px;
  opacity: 0.35;
}

.corner-reticle::before,
.corner-reticle::after {
  content: "";
  position: absolute;
  background: var(--cyan-soft);
}

.corner-reticle--tl { top: 1.25rem; left: calc(var(--nav-w) + 1rem); }
.corner-reticle--tr { top: 1.25rem; right: 1.25rem; transform: scaleX(-1); }
.corner-reticle--bl { bottom: 1.25rem; left: calc(var(--nav-w) + 1rem); transform: scaleY(-1); }
.corner-reticle--br { bottom: 1.25rem; right: 1.25rem; transform: scale(-1); }

.corner-reticle::before { width: 12px; height: 1px; top: 0; left: 0; }
.corner-reticle::after { width: 1px; height: 12px; top: 0; left: 0; }

.axis-label,
.vel-readout,
.scroll-readout {
  position: absolute;
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.14em;
  color: var(--text-dim);
}

.axis-label--x { bottom: 1.5rem; left: calc(var(--nav-w) + 2rem); }
.axis-label--y { bottom: 1.5rem; left: 50%; transform: translateX(-50%); }
.axis-label--z { bottom: 1.5rem; right: 2rem; text-align: right; }
.vel-readout { top: 1.5rem; right: 2rem; color: var(--cyan-soft); }
.scroll-readout { top: 1.5rem; left: calc(var(--nav-w) + 2rem); }

body.is-moving .axis-label,
body.is-moving .vel-readout { color: var(--cyan); }

.hud-shell {
  position: relative;
  z-index: 10;
  pointer-events: none;
}

.hud-shell a,
.hud-nav { pointer-events: auto; }

.hud-nav {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--nav-w);
  z-index: 200;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.15rem;
  padding: 2rem 0;
  background: linear-gradient(90deg, rgba(3, 3, 6, 0.7) 0%, transparent 100%);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.hud-nav-link {
  display: flex;
  flex-direction: column;
  padding: 0.65rem 0.85rem;
  text-decoration: none;
  font-family: var(--mono);
  font-size: 0.55rem;
  letter-spacing: 0.18em;
  color: var(--text-dim);
  transition: color 0.25s, transform 0.25s;
  position: relative;
}

.hud-nav-link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 2px;
  height: 0;
  background: var(--cyan);
  transform: translateY(-50%);
  transition: height 0.3s ease;
  box-shadow: 0 0 12px var(--cyan);
}

.hud-nav-link:hover,
.hud-nav-link.is-active {
  color: var(--cyan);
  transform: translateX(4px);
}

.hud-nav-link.is-active::before { height: 70%; }

.nav-idx {
  font-size: 0.5rem;
  opacity: 0.5;
  margin-bottom: 0.15rem;
}

.hud-rail--left {
  position: fixed;
  left: var(--nav-w);
  top: 50%;
  transform: translateY(-50%) rotate(-90deg);
  transform-origin: left center;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  font-family: var(--mono);
  font-size: 0.5rem;
  letter-spacing: 0.25em;
  color: var(--text-dim);
  opacity: 0.4;
  z-index: 15;
  pointer-events: none;
}

.rail-line {
  width: 40px;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan-soft), transparent);
}

.rail-clock { color: var(--cyan-soft); }

.scroll-field { position: relative; }

.field-panel {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  padding: 6vh 4vw 6vh calc(var(--nav-w) + 3vw);
  position: relative;
}

.panel-glass {
  pointer-events: auto;
  background: var(--glass);
  backdrop-filter: blur(20px) saturate(1.2);
  -webkit-backdrop-filter: blur(20px) saturate(1.2);
  padding: clamp(1.5rem, 4vw, 2.75rem);
  max-width: 36rem;
  position: relative;
}

.panel-glass::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(0, 240, 255, 0.04) 0%,
    transparent 40%,
    rgba(255, 180, 50, 0.02) 100%
  );
  pointer-events: none;
}

.field-panel--hero {
  align-items: flex-end;
  padding-bottom: 12vh;
}

.panel-glass--hero {
  max-width: 44rem;
  margin-right: auto;
}

.field-panel--story {
  justify-content: flex-end;
  padding-right: 6vw;
}

.panel-glass--offset-r {
  margin-left: auto;
  max-width: 32rem;
}

.field-panel--teach {
  justify-content: flex-start;
  padding-left: calc(var(--nav-w) + 8vw);
}

.panel-glass--offset-l {
  margin-right: auto;
  transform: translateY(-8vh);
}

.panel-glass--narrow { max-width: 28rem; }

.field-panel--ideas {
  align-items: flex-start;
  padding-top: 10vh;
  min-height: 140vh;
}

.ideas-cluster {
  position: relative;
  width: 100%;
  max-width: 52rem;
  margin: 0 auto 0 8vw;
  min-height: 80vh;
}

.panel-glass--idea-a {
  max-width: 26rem;
  transform: rotate(-0.4deg);
}

.panel-glass--idea-b {
  max-width: 28rem;
  position: absolute;
  right: 0;
  top: clamp(12rem, 28vh, 22rem);
  transform: rotate(0.6deg) translateX(5%);
}

.field-panel--link {
  flex-direction: column;
  justify-content: center;
  gap: 3rem;
  min-height: 90vh;
}

.panel-glass--link {
  max-width: 24rem;
  margin: 0 auto;
  text-align: center;
}

.meta-line {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  margin-bottom: 1.25rem;
}

.meta-glyph { color: var(--cyan); margin-right: 0.3rem; }

.hero-greeting {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  margin-bottom: 1.25rem;
}

.hero-identity {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 3vw, 1.75rem);
  margin-bottom: 1.5rem;
}

.hero-photo {
  width: clamp(88px, 22vw, 128px);
  height: clamp(88px, 22vw, 128px);
  object-fit: cover;
  object-position: center 20%;
  border-radius: 50%;
  flex-shrink: 0;
  border: 2px solid rgba(0, 240, 255, 0.35);
  box-shadow:
    0 0 24px rgba(0, 240, 255, 0.15),
    0 4px 20px rgba(0, 0, 0, 0.4);
}

.hero-name-block {
  min-width: 0;
}

.display-name {
  font-family: var(--sans);
  font-weight: 200;
  font-size: clamp(2rem, 9vw, 4.5rem);
  line-height: 0.92;
  letter-spacing: -0.03em;
  color: var(--text-bright);
  text-shadow: 0 0 80px rgba(0, 240, 255, 0.15);
  margin-bottom: 0.35rem;
}

.display-role {
  font-family: var(--sans);
  font-size: clamp(0.95rem, 2.2vw, 1.1rem);
  font-weight: 400;
  letter-spacing: 0.01em;
  color: var(--text);
  margin-bottom: 0;
  line-height: 1.4;
}

.display-aside {
  font-size: 0.82rem;
  color: var(--text-dim);
  font-style: italic;
  margin-top: 1rem;
  max-width: 32rem;
  line-height: 1.5;
}

.dim { color: var(--text-dim); }

.display-thesis {
  font-size: clamp(1rem, 2.2vw, 1.15rem);
  font-weight: 300;
  max-width: 32rem;
  margin-bottom: 2rem;
}

.display-thesis em.cyan { color: var(--cyan); font-style: normal; }
.display-thesis em.amber { color: var(--amber); font-style: normal; }

.signal-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  font-family: var(--mono);
  font-size: 0.55rem;
  letter-spacing: 0.2em;
  color: var(--text-dim);
}

.signal-tags li::before {
  content: "◆ ";
  color: var(--cyan);
  font-size: 0.45rem;
}

.drift-hint {
  position: absolute;
  bottom: 4vh;
  right: 8vw;
  font-family: var(--mono);
  font-size: 0.55rem;
  letter-spacing: 0.2em;
  color: var(--text-dim);
  opacity: 0.5;
  animation: drift 3s ease-in-out infinite;
}

@keyframes drift {
  0%, 100% { opacity: 0.3; transform: translateY(0); }
  50% { opacity: 0.7; transform: translateY(6px); }
}

.hud-label {
  display: block;
  font-family: var(--mono);
  font-size: 0.55rem;
  letter-spacing: 0.22em;
  color: var(--cyan-soft);
  margin-bottom: 0.75rem;
}

.hud-label--amber { color: var(--amber-soft); }

.panel-head {
  font-family: var(--sans);
  font-weight: 200;
  font-size: clamp(2rem, 6vw, 3.5rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--text-bright);
  margin-bottom: 1.5rem;
}

.panel-head--sm { font-size: clamp(1.4rem, 4vw, 2rem); }

.head-sub,
.head-sub-inline {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: var(--text-dim);
  font-weight: 400;
}

.head-sub-inline { display: block; margin: -0.75rem 0 1rem; }

.panel-glass p {
  font-size: 0.92rem;
  font-weight: 300;
  margin-bottom: 1rem;
}

.panel-glass .cyan { color: var(--cyan); }
.panel-glass em { color: var(--cyan-soft); font-style: normal; }
.panel-glass strong { color: var(--text-bright); font-weight: 500; }

.trace-stream {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.trace-node {
  position: relative;
  padding-left: 1rem;
}

.trace-node::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.35rem;
  bottom: 0.35rem;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan), transparent);
  opacity: 0.4;
}

.trace-node--b { margin-left: clamp(0rem, 8vw, 4rem); }
.trace-node--c { margin-left: clamp(0rem, 4vw, 2rem); }

.trace-key {
  font-family: var(--mono);
  font-size: 0.55rem;
  letter-spacing: 0.18em;
  color: var(--cyan);
  display: block;
  margin-bottom: 0.35rem;
}

.trace-node h3 {
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--text-bright);
  margin-bottom: 0.5rem;
}

.trace-node p { font-size: 0.88rem; }

.whisper-quote {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--amber-soft);
  font-style: italic;
  margin-top: 1rem;
}

.signal-list { list-style: none; margin: 1rem 0; }

.signal-list li {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text-dim);
  padding: 0.35rem 0 0.35rem 0.75rem;
  position: relative;
}

.signal-list li::before {
  content: "·";
  position: absolute;
  left: 0;
  color: var(--cyan);
}

.signal-list--amber li::before { color: var(--amber); }

.closing-line {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--amber-soft);
}

.link-orbit {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem 2.5rem;
  margin-top: 1.5rem;
}

.orbit-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  font-family: var(--mono);
  font-size: 0.55rem;
  letter-spacing: 0.15em;
  color: var(--text-dim);
  transition: color 0.2s, transform 0.25s, filter 0.25s;
}

.orbit-node svg {
  width: 26px;
  height: 26px;
  filter: drop-shadow(0 0 8px rgba(0, 240, 255, 0.2));
}

.orbit-node:hover,
.orbit-node:focus-visible {
  color: var(--cyan);
  transform: translateY(-4px) scale(1.05);
  outline: none;
}

.orbit-node:hover svg {
  filter: drop-shadow(0 0 16px rgba(0, 240, 255, 0.5));
}

.orbit-node--mail small {
  font-size: 0.48rem;
  opacity: 0.6;
}

.hud-footer {
  display: flex;
  justify-content: space-between;
  width: 100%;
  max-width: 20rem;
  margin: 0 auto;
  font-family: var(--mono);
  font-size: 0.5rem;
  letter-spacing: 0.15em;
  color: var(--text-dim);
  opacity: 0.45;
}

.field-panel .panel-glass,
.field-panel .ideas-cluster > .panel-glass {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
}

.field-panel.is-inview .panel-glass {
  opacity: 1;
  transform: translateY(0);
}

.field-panel.is-inview .panel-glass--offset-l {
  transform: translateY(-8vh);
}

.field-panel.is-inview .panel-glass--idea-a {
  opacity: 1;
  transform: rotate(-0.4deg) translateY(0);
}

.field-panel.is-inview .panel-glass--idea-b {
  opacity: 1;
  transform: rotate(0.6deg) translateX(5%);
  transition-delay: 0.15s;
}

.field-panel--hero .panel-glass {
  opacity: 1;
  transform: none;
}

@media (max-width: 720px) {
  :root { --nav-w: 3.5rem; }

  .hud-nav-link span:not(.nav-idx) { display: none; }

  .field-panel {
    padding-left: calc(var(--nav-w) + 1rem);
    padding-right: 1rem;
  }

  .panel-glass--idea-b {
    position: relative;
    top: auto;
    right: auto;
    transform: none;
    margin-top: 2rem;
  }

  .trace-node--b,
  .trace-node--c { margin-left: 0; }

  .hud-rail--left { display: none; }

  .hero-identity {
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
  }

  .display-name { font-size: clamp(1.85rem, 12vw, 2.75rem); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .drift-hint { animation: none; }
  .field-panel .panel-glass { opacity: 1; transform: none; transition: none; }
  .orbit-node:hover { transform: none; }
}