:root {
  color-scheme: light;
  font-family: "Arial Narrow", "Roboto Condensed", Arial, Helvetica, sans-serif;
  color: #17201f;
  background: #f1efe7;
  font-synthesis: none;
  --ink: #17201f;
  --paper: #f1efe7;
  --mist: #c8d9d4;
  --sky: #adcbd2;
  --sun: #ff6a3d;
  --electric: #d8ff45;
  --rain: #315c68;
  --line: rgba(23, 32, 31, 0.3);
  --pad: clamp(1rem, 3.2vw, 3.5rem);
}

* { box-sizing: border-box; }
html { overflow-x: clip; scroll-behavior: smooth; background: var(--paper); }
body { min-width: 0; margin: 0; overflow-x: clip; background: var(--paper); }
body, button, a, input { color: inherit; }
a { text-decoration: none; }
button, input { font: inherit; }

.site-head {
  position: relative;
  z-index: 30;
  display: grid;
  min-height: 5.2rem;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1.5rem;
  padding: 0 var(--pad);
  border-bottom: 1px solid var(--line);
  background: var(--paper);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.identity { display: flex; align-items: center; gap: 0.85rem; width: max-content; }
.identity-number { display: grid; width: 2.2rem; height: 2.2rem; place-items: center; border: 1px solid var(--ink); border-radius: 50%; }
.site-head nav { display: flex; gap: clamp(1rem, 3vw, 3rem); }
.site-head nav a, .identity { padding: 0.6rem 0; }
.site-head a:focus-visible, .site-foot a:focus-visible { outline: 3px solid var(--sun); outline-offset: 4px; }
.head-date { justify-self: end; margin: 0; }

.hero { padding: clamp(3rem, 7vw, 7rem) var(--pad) var(--pad); }
.hero-copy {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 2rem;
  margin-bottom: clamp(2rem, 5vw, 5rem);
}
.eyebrow { margin: 0; font-size: 0.68rem; font-weight: 800; letter-spacing: 0.14em; text-transform: uppercase; }
.hero-copy .eyebrow { align-self: start; }
.hero h1 {
  grid-column: 1;
  margin: 1.2rem 0 0;
  font-size: clamp(4.7rem, 12vw, 12.5rem);
  font-weight: 900;
  letter-spacing: -0.085em;
  line-height: 0.72;
  text-transform: uppercase;
}
.hero h1 span { display: block; }
.hero h1 span:last-child { margin-left: clamp(2rem, 13vw, 14rem); color: var(--sun); }
.hero-note { align-self: end; margin: 0 0 0.4rem; font-size: 0.72rem; font-weight: 800; letter-spacing: 0.1em; text-transform: uppercase; writing-mode: vertical-rl; }

.weather-window {
  --sun-x: 46%;
  --sun-y: 23%;
  --cloud-opacity: 0.8;
  --rain-opacity: 0;
  --light-opacity: 0.7;
  position: relative;
  min-height: min(72rem, 78svh);
  overflow: hidden;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  background: var(--sky);
  transition: background 700ms ease;
}
.sky-field { position: absolute; inset: 0; overflow: hidden; }
.sky-glow { position: absolute; inset: 0; background: radial-gradient(circle at var(--sun-x) var(--sun-y), rgba(255, 244, 183, 0.88), transparent 27%); transition: background 500ms ease; }
.sun-disc {
  position: absolute;
  z-index: 2;
  top: var(--sun-y);
  left: var(--sun-x);
  width: clamp(5.5rem, 12vw, 11rem);
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--sun);
  box-shadow: 0 0 4rem rgba(255, 106, 61, 0.26);
  transform: translate(-50%, -50%);
  transition: top 450ms ease, left 450ms ease, transform 450ms ease;
}
.sun-disc span { position: absolute; inset: 19%; border: 1px solid rgba(23, 32, 31, 0.45); border-radius: 50%; }

.cloud { position: absolute; z-index: 5; display: flex; align-items: center; opacity: var(--cloud-opacity); filter: blur(0.6px); transition: opacity 500ms ease, transform 900ms cubic-bezier(.2,.8,.2,1); }
.cloud span { display: block; border-radius: 50%; background: rgba(237, 240, 231, 0.9); box-shadow: 0 0 2rem rgba(237, 240, 231, 0.45); }
.cloud span:nth-child(1) { width: 11rem; height: 6rem; }
.cloud span:nth-child(2) { width: 15rem; height: 9rem; margin-left: -4rem; }
.cloud span:nth-child(3) { width: 13rem; height: 6.5rem; margin-left: -5rem; }
.cloud-a { top: 19%; left: -4rem; transform: translateX(calc(var(--sun-x) * 0.12)); }
.cloud-b { top: 33%; right: -7rem; transform: scale(0.72) translateX(calc(var(--sun-x) * -0.08)); }

.rain-field {
  position: absolute;
  z-index: 4;
  top: 0;
  right: 12%;
  width: 41%;
  height: 76%;
  opacity: var(--rain-opacity);
  background: repeating-linear-gradient(105deg, transparent 0 1rem, rgba(49, 92, 104, 0.72) 1rem 1.08rem, transparent 1.08rem 2.1rem);
  mask-image: linear-gradient(to bottom, transparent, #000 12%, #000 80%, transparent);
  transition: opacity 500ms ease;
  animation: rain-slide 1.5s linear infinite;
}
.air-lines { position: absolute; z-index: 3; inset: 0; width: 100%; height: 70%; overflow: hidden; fill: none; stroke: rgba(23, 32, 31, 0.28); stroke-width: 1.3; }
.air-lines path { stroke-dasharray: 8 12; animation: air-flow 16s linear infinite; }
.air-lines path:nth-child(2) { animation-duration: 21s; animation-direction: reverse; }
.air-lines path:nth-child(3) { animation-duration: 25s; }

.horizon { position: absolute; z-index: 6; right: 0; bottom: 20%; left: 0; height: 25%; border-radius: 50% 50% 0 0; background: #4a655a; transform: rotate(-1deg) scaleX(1.01); }
.ground-light { position: absolute; z-index: 7; right: 0; bottom: -28%; left: 0; height: 58%; opacity: var(--light-opacity); background: radial-gradient(ellipse at 48% 18%, var(--electric), rgba(216, 255, 69, 0.2) 38%, transparent 65%); transition: opacity 500ms ease; }
.array-field { position: absolute; z-index: 8; right: 6%; bottom: 18%; left: 14%; display: flex; justify-content: space-between; perspective: 900px; transform: rotate(-3deg); }
.array-field span { width: 12%; aspect-ratio: 1.9; border: 1px solid rgba(241, 239, 231, 0.6); background: linear-gradient(135deg, #243436, #527178 52%, #1b282b 53%); box-shadow: 0.35rem 0.55rem 0 rgba(23, 32, 31, 0.35); transform: rotateX(58deg) rotateZ(-4deg); transition: filter 500ms ease, transform 500ms ease; }

.window-readout { position: absolute; z-index: 12; top: 1.5rem; right: 1.5rem; display: flex; gap: clamp(1.4rem, 4vw, 4rem); padding: 0.8rem 0; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.window-readout p { display: flex; min-width: 5.5rem; flex-direction: column; gap: 0.25rem; margin: 0; }
.window-readout span, .scrub-zone label { font-size: 0.58rem; font-weight: 800; letter-spacing: 0.12em; text-transform: uppercase; }
.window-readout strong { font-size: 1.1rem; letter-spacing: -0.03em; }
.focus-marker { position: absolute; z-index: 11; top: 20%; left: 31%; width: 7.6rem; height: 7.6rem; border: 1px solid rgba(23, 32, 31, 0.75); border-radius: 50%; transform: translate(-50%, -50%); }
.focus-marker span { position: absolute; top: 50%; left: -2.5rem; width: 12.5rem; height: 1px; background: currentColor; transform: translateY(-50%); }
.focus-marker p { position: absolute; right: 0.85rem; bottom: 0.5rem; margin: 0; font-size: 0.68rem; font-weight: 900; }

.scrub-zone { position: absolute; z-index: 14; right: 1.5rem; bottom: 1.5rem; left: 1.5rem; display: grid; grid-template-columns: auto 1fr; gap: 0.6rem 2rem; align-items: center; padding: 1rem 1.2rem; background: rgba(241, 239, 231, 0.9); backdrop-filter: blur(0.5rem); }
.scrub-zone label { grid-row: 1 / 3; }
.scrub-labels { display: flex; justify-content: space-between; font-size: 0.58rem; font-weight: 800; }
.scrub-zone input { width: 100%; height: 1.4rem; margin: 0; appearance: none; background: transparent; cursor: ew-resize; }
.scrub-zone input::-webkit-slider-runnable-track { height: 1px; background: var(--ink); }
.scrub-zone input::-webkit-slider-thumb { width: 1.25rem; height: 1.25rem; margin-top: -0.6rem; appearance: none; border: 2px solid var(--ink); border-radius: 50%; background: var(--sun); }
.scrub-zone input:focus-visible { outline: 3px solid var(--sun); outline-offset: 4px; }

.weather-window[data-phase="low"] { background: #aab6b2; --cloud-opacity: 0.35; --rain-opacity: 0; --light-opacity: 0.38; }
.weather-window[data-phase="mixed"] { background: #adcbd2; --cloud-opacity: 0.82; --rain-opacity: 0.08; --light-opacity: 0.67; }
.weather-window[data-phase="rain"] { background: #718d92; --cloud-opacity: 1; --rain-opacity: 0.82; --light-opacity: 0.18; }
.weather-window[data-phase="clear"] { background: #b8dfe7; --cloud-opacity: 0.18; --rain-opacity: 0; --light-opacity: 0.88; }
.weather-window[data-phase="rain"] .array-field span { filter: brightness(0.62) saturate(0.72); transform: rotateX(58deg) rotateZ(-4deg) translateY(0.35rem); }

.signal-intro { display: flex; min-height: 46svh; align-items: center; justify-content: space-between; gap: 2rem; padding: 5rem var(--pad); color: var(--paper); background: var(--ink); }
.signal-intro p { margin: 0; font-size: clamp(2.5rem, 6.4vw, 6.8rem); font-weight: 900; letter-spacing: -0.06em; line-height: 0.9; text-transform: uppercase; }
.signal-intro p:last-child { max-width: 7ch; color: var(--electric); text-align: right; }

.signals { padding: clamp(5rem, 10vw, 10rem) var(--pad); }
.section-head { display: grid; grid-template-columns: 1fr 2fr; align-items: start; gap: 2rem; margin-bottom: clamp(4rem, 8vw, 8rem); }
.section-head h2 { margin: 0; font-size: clamp(3.7rem, 8.5vw, 9rem); font-weight: 900; letter-spacing: -0.075em; line-height: 0.78; text-transform: uppercase; }
.signal-list { border-top: 1px solid var(--ink); }
.signal { display: grid; min-height: 20rem; grid-template-columns: minmax(18rem, 0.75fr) minmax(0, 1.25fr); align-items: stretch; border-bottom: 1px solid var(--ink); outline-offset: -5px; }
.signal header { display: grid; grid-template-columns: 3rem 1fr; align-content: center; gap: 0.8rem 1.5rem; padding: 2rem 1rem 2rem 0; }
.signal header span, .signal header p { font-size: 0.62rem; font-weight: 800; letter-spacing: 0.12em; text-transform: uppercase; }
.signal header span { grid-row: 1 / 3; }
.signal header h3 { margin: 0; font-size: clamp(2.3rem, 4vw, 4.8rem); letter-spacing: -0.055em; line-height: 0.9; }
.signal header p { margin: 0; }
.signal-visual { position: relative; min-height: 20rem; overflow: hidden; border-left: 1px solid var(--ink); background: var(--mist); }

.cloud-visual { display: flex; align-items: center; justify-content: center; gap: 1.5rem; }
.cloud-visual span { width: clamp(3rem, 7vw, 8rem); aspect-ratio: 1; border: 1px solid var(--ink); border-radius: 50%; background: var(--paper); transition: transform 700ms cubic-bezier(.2,.8,.2,1); }
.cloud-visual span:nth-child(2) { width: clamp(5rem, 11vw, 12rem); margin-left: -4rem; }
.cloud-visual span:nth-child(3) { margin-left: -4rem; }
.cloud-visual span:nth-child(4) { width: clamp(2rem, 4vw, 4rem); margin-left: -2rem; background: var(--electric); }
.signal:hover .cloud-visual span:nth-child(odd), .signal:focus .cloud-visual span:nth-child(odd) { transform: translateX(-1.6rem); }
.signal:hover .cloud-visual span:nth-child(even), .signal:focus .cloud-visual span:nth-child(even) { transform: translateX(1.6rem); }

.rain-visual { background: var(--rain); }
.rain-visual span { position: absolute; top: -25%; width: 1px; height: 150%; background: rgba(241, 239, 231, 0.75); transform: rotate(14deg); transition: transform 700ms cubic-bezier(.2,.8,.2,1); }
.rain-visual span:nth-child(1) { left: 12%; }.rain-visual span:nth-child(2) { left: 25%; }.rain-visual span:nth-child(3) { left: 38%; }.rain-visual span:nth-child(4) { left: 51%; }.rain-visual span:nth-child(5) { left: 64%; }.rain-visual span:nth-child(6) { left: 77%; }.rain-visual span:nth-child(7) { left: 90%; }
.signal:hover .rain-visual span:nth-child(odd), .signal:focus .rain-visual span:nth-child(odd) { transform: rotate(14deg) translateY(2rem); }
.signal:hover .rain-visual span:nth-child(even), .signal:focus .rain-visual span:nth-child(even) { transform: rotate(14deg) translateY(-2rem); }

.surface-visual { display: flex; align-items: end; justify-content: center; gap: 0.8rem; padding: 13% 8%; background: var(--electric); perspective: 800px; }
.surface-visual span { width: 16%; aspect-ratio: 1.8; border: 1px solid var(--ink); background: #31494b; box-shadow: 0.3rem 0.4rem 0 rgba(23, 32, 31, 0.35); transform: rotateX(58deg); transition: transform 600ms cubic-bezier(.2,.8,.2,1), filter 600ms ease; }
.signal:hover .surface-visual span, .signal:focus .surface-visual span { filter: brightness(1.35); transform: rotateX(46deg) translateY(-0.5rem); }
.signal:hover .surface-visual span:nth-child(even), .signal:focus .surface-visual span:nth-child(even) { transform: rotateX(54deg) translateY(0.3rem); }

.sequence { padding: clamp(5rem, 10vw, 10rem) var(--pad); color: var(--paper); background: var(--rain); }
.sequence header { display: grid; grid-template-columns: 1fr 2fr; gap: 2rem; margin-bottom: clamp(4rem, 8vw, 8rem); }
.sequence h2 { margin: 0; font-size: clamp(3.8rem, 9vw, 9rem); font-weight: 900; letter-spacing: -0.08em; line-height: 0.78; text-transform: uppercase; }
.sequence-track { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid rgba(241, 239, 231, 0.4); }
.sequence-track button { display: flex; min-height: 10rem; flex-direction: column; justify-content: space-between; padding: 1.2rem; border: 0; border-right: 1px solid rgba(241, 239, 231, 0.4); color: var(--paper); background: transparent; text-align: left; cursor: pointer; transition: color 250ms ease, background 250ms ease; }
.sequence-track button:last-child { border-right: 0; }
.sequence-track button:hover, .sequence-track button:focus-visible, .sequence-track button.is-active { color: var(--ink); background: var(--electric); outline: none; }
.sequence-track span { font-size: 0.65rem; font-weight: 800; letter-spacing: 0.1em; }
.sequence-track strong { font-size: clamp(1.7rem, 3vw, 3.2rem); letter-spacing: -0.05em; }
.sequence-line { height: 1.2rem; margin-top: 2rem; border: 1px solid rgba(241, 239, 231, 0.45); }
.sequence-line span { display: block; width: 38.8%; height: 100%; background: var(--sun); transition: width 500ms cubic-bezier(.2,.8,.2,1); }

.site-foot { display: flex; min-height: 22rem; align-items: end; justify-content: space-between; gap: 2rem; padding: 4rem var(--pad); color: var(--paper); background: var(--ink); }
.site-foot p, .site-foot a { margin: 0; font-size: 0.68rem; font-weight: 800; letter-spacing: 0.12em; text-transform: uppercase; }
.site-foot a { display: flex; gap: 2rem; padding: 1rem 0; border-top: 1px solid var(--paper); border-bottom: 1px solid var(--paper); }

@keyframes air-flow { to { stroke-dashoffset: -80; } }
@keyframes rain-slide { to { background-position: 0 2rem; } }

.is-paused .air-lines path,
.is-paused .rain-field { animation-play-state: paused; }

@media (max-width: 62rem) {
  .site-head { grid-template-columns: 1fr auto; }
  .site-head nav { display: none; }
  .head-date { grid-column: 2; grid-row: 1; }
  .weather-window { min-height: 68svh; }
  .signal { grid-template-columns: minmax(15rem, 0.8fr) minmax(0, 1.2fr); }
}

@media (max-width: 44rem) {
  .site-head { min-height: 4.5rem; }
  .identity span:last-child { display: none; }
  .hero { padding-top: 3.5rem; }
  .hero-copy { display: block; }
  .hero h1 { font-size: clamp(3.6rem, 18vw, 5rem); line-height: 0.78; }
  .hero h1 span:last-child { margin-left: 0; }
  .hero-note { display: none; }
  .weather-window { min-height: 74svh; }
  .window-readout { top: 1rem; right: 1rem; left: 1rem; justify-content: space-between; }
  .window-readout p { min-width: 0; }
  .focus-marker { top: 29%; left: 37%; width: 5.5rem; height: 5.5rem; }
  .focus-marker span { left: -1.4rem; width: 8.2rem; }
  .cloud { transform: scale(0.62); }
  .cloud-a { left: -9rem; }
  .cloud-b { right: -11rem; }
  .array-field { right: -4%; bottom: 20%; left: 4%; }
  .scrub-zone { right: 1rem; bottom: 1rem; left: 1rem; grid-template-columns: 1fr; gap: 0.65rem; }
  .scrub-zone label { grid-row: auto; }
  .signal-intro { min-height: 55svh; flex-direction: column; align-items: flex-start; justify-content: center; }
  .signal-intro p:last-child { text-align: left; }
  .section-head, .sequence header { display: block; }
  .section-head h2, .sequence h2 { margin-top: 1.5rem; }
  .signal { display: block; min-height: 0; }
  .signal header { min-height: 14rem; padding-right: 0; }
  .signal-visual { min-height: 18rem; border-top: 1px solid var(--ink); border-left: 0; }
  .sequence-track { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sequence-track button:nth-child(2) { border-right: 0; }
  .sequence-track button:nth-child(-n+2) { border-bottom: 1px solid rgba(241, 239, 231, 0.4); }
  .site-foot { min-height: 18rem; flex-direction: column; align-items: flex-start; justify-content: end; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
}