:root {
  --bg: #0c0d10;
  --bg-soft: #15171c;
  --bg-card: #1a1d24;
  --ink: #efece6;
  --ink-2: #c8c5be;
  --ink-3: #7e7d77;
  --line: #2a2d35;
  --accent: #f8d97c;
  --accent-soft: #d9b864;

  --brightness: 0.28;
  --day-amount: 0;
  --dusk-amount: 0;
  --night-amount: 1;
  --stars-amount: 1;

  --serif: "New York", ui-serif, "Iowan Old Style", Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Inter", system-ui, "Segoe UI", sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background:
    radial-gradient(120% 70% at 80% 0%, rgba(248, 217, 124, 0.05), transparent 60%),
    radial-gradient(80% 50% at 0% 100%, rgba(76, 45, 110, 0.08), transparent 60%),
    var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  min-height: 100vh;
}

a { color: inherit; transition: color 120ms ease; }
a:hover { color: var(--accent); }

::selection { background: var(--accent); color: #0c0d10; }

/* ---- film grain overlay ---- */
.grain {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.045;
  mix-blend-mode: overlay;
  z-index: 100;
}

/* ---- topbar ---- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 28px 44px;
  position: relative;
  z-index: 2;
}
.wordmark {
  text-decoration: none;
  font-family: var(--mono);
  font-size: 13.5px;
  letter-spacing: 0.01em;
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--ink);
}
.wordmark__dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 14px var(--accent), inset 0 0 4px rgba(255,255,255,0.7);
}
.topbar__nav a {
  font-family: var(--mono);
  font-size: 13px;
  text-decoration: none;
  color: var(--ink-3);
  letter-spacing: 0.06em;
}
.topbar__nav a:hover { color: var(--ink); }

/* ---- shared layout ---- */
main {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 44px;
  position: relative;
  z-index: 1;
}

/* ---- hero ---- */
.hero {
  padding: 70px 0 30px;
  max-width: 760px;
}
.kicker {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: 0 0 22px;
}
.hero h1 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(46px, 7vw, 88px);
  line-height: 1.0;
  letter-spacing: -0.025em;
  margin: 0 0 28px;
  color: var(--ink);
}
.hero h1 em {
  font-style: italic;
  color: var(--accent);
  font-weight: 400;
}
.lede {
  font-size: clamp(16px, 1.35vw, 19px);
  color: var(--ink-2);
  max-width: 600px;
  margin: 0 0 36px;
  line-height: 1.55;
}
.lede strong {
  font-weight: 500;
  color: var(--ink);
}

.install {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 13px 14px 13px 18px;
  font-family: var(--mono);
  font-size: 14px;
  margin-bottom: 22px;
  max-width: 100%;
}
.install code {
  color: var(--ink);
  font-family: inherit;
  white-space: nowrap;
  overflow-x: auto;
}
.install__copy {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
  background: transparent;
  border: 1px solid var(--line);
  padding: 6px 11px;
  border-radius: 6px;
  cursor: pointer;
  transition: color 120ms ease, border-color 120ms ease;
  flex-shrink: 0;
}
.install__copy:hover { color: var(--accent); border-color: var(--accent-soft); }

.meta {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--ink-3);
  letter-spacing: 0.04em;
  margin: 0;
}

/* ---- stage (the demo) ---- */
.stage {
  position: relative;
  margin: 60px 0 90px;
  padding: 120px 56px 70px;
  display: grid;
  grid-template-columns: 0.78fr 1.22fr;
  align-items: end;
  column-gap: 60px;
  isolation: isolate;
  border: 1px solid var(--line);
  border-radius: 20px;
  overflow: hidden;
  background: #04060f;
  min-height: 620px;
}

/* ---- sky ---- */
.sky {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}
.sky__layer {
  position: absolute;
  inset: 0;
  will-change: opacity;
}
.sky__layer--night {
  background:
    radial-gradient(120% 80% at 50% 100%, rgba(40, 28, 80, 0.45) 0%, transparent 70%),
    linear-gradient(180deg, #03050f 0%, #070a1c 50%, #0d1024 100%);
  opacity: var(--night-amount, 1);
}
.sky__layer--dusk {
  background:
    radial-gradient(80% 55% at 50% 100%,
      rgba(255, 160, 80, 0.55) 0%,
      rgba(220, 90, 130, 0.28) 35%,
      transparent 70%),
    linear-gradient(180deg, #1a1238 0%, #4a2358 45%, #c2624a 85%, #f4a868 100%);
  opacity: var(--dusk-amount, 0);
}
.sky__layer--day {
  background:
    radial-gradient(65% 55% at 50% 30%,
      rgba(255, 248, 220, 0.40) 0%,
      rgba(255, 220, 160, 0.12) 45%,
      transparent 75%),
    linear-gradient(180deg, #2c6da0 0%, #5a9cc8 35%, #a8cde6 75%, #d8e6ec 100%);
  opacity: var(--day-amount, 0);
}

.stars {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1.2px 1.2px at 8% 14%, #ffffffdd, transparent 60%),
    radial-gradient(1px 1px at 14% 28%, #ffffff99, transparent 60%),
    radial-gradient(1.4px 1.4px at 22% 9%, #ffffffee, transparent 60%),
    radial-gradient(1px 1px at 28% 22%, #ffffff88, transparent 60%),
    radial-gradient(1.1px 1.1px at 35% 12%, #ffffffcc, transparent 60%),
    radial-gradient(1px 1px at 42% 26%, #ffffff77, transparent 60%),
    radial-gradient(1.3px 1.3px at 48% 7%, #ffffffdd, transparent 60%),
    radial-gradient(1px 1px at 56% 19%, #ffffffaa, transparent 60%),
    radial-gradient(1.1px 1.1px at 63% 31%, #ffffff99, transparent 60%),
    radial-gradient(1.4px 1.4px at 71% 11%, #ffffffee, transparent 60%),
    radial-gradient(1px 1px at 78% 24%, #ffffff88, transparent 60%),
    radial-gradient(1.2px 1.2px at 84% 9%, #ffffffcc, transparent 60%),
    radial-gradient(1px 1px at 91% 21%, #ffffff99, transparent 60%),
    radial-gradient(1.1px 1.1px at 96% 14%, #ffffffbb, transparent 60%);
  opacity: var(--stars-amount, 0);
  pointer-events: none;
  will-change: opacity;
}

/* ---- celestial body (sun) ----
   Positioned at 0,0; moved each frame by JS via translate3d so the GPU
   composites the transform without paint/layout invalidation. */
.celestial {
  position: absolute;
  top: 0;
  left: 0;
  width: 64px;
  height: 64px;
  margin: -32px 0 0 -32px;
  pointer-events: none;
  will-change: transform, opacity;
  transform: translate3d(-9999px, -9999px, 0);
}
.celestial__core {
  position: absolute;
  inset: 0;
  border-radius: 50%;
}
.celestial__halo {
  position: absolute;
  inset: -150%;
  border-radius: 50%;
  pointer-events: none;
}
.sun__core {
  background: radial-gradient(circle at 50% 45%,
    #fff9e4 0%,
    #ffe49a 38%,
    #ffb24a 72%,
    #d97a28 100%);
  box-shadow: 0 0 22px rgba(255, 195, 110, 0.55);
}
.celestial--sun .celestial__halo {
  background: radial-gradient(circle,
    rgba(255, 220, 140, 0.40) 0%,
    rgba(255, 180, 100, 0.14) 30%,
    rgba(255, 140, 80, 0.05) 50%,
    transparent 65%);
}

/* ---- cable (USB-C / Thunderbolt between devices) ----
   Two stacked stroked paths simulate the rounded shading of a real cable:
   a thick dark base and a thin lighter highlight along the same curve.
   Path d is computed in JS so endpoints follow the devices on resize. */
.cable {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
  overflow: visible;
}
.cable__base {
  fill: none;
  stroke: #131418;
  stroke-width: 5;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.cable__hilite {
  fill: none;
  stroke: rgba(255, 255, 255, 0.10);
  stroke-width: 1.4;
  stroke-linecap: round;
  transform: translateY(-0.8px);
}

/* horizon line floats in front of sky, behind devices */
.stage__horizon {
  position: absolute;
  left: 5%;
  right: 5%;
  bottom: 92px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.18) 20%, rgba(255,255,255,0.22) 50%, rgba(255,255,255,0.18) 80%, transparent);
  z-index: 1;
  pointer-events: none;
}

.device {
  position: relative;
  z-index: 2;
}

.device__chip {
  position: absolute;
  top: -18px;
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--mono);
  background: rgba(15, 17, 22, 0.92);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 11.5px;
  white-space: nowrap;
  z-index: 5;
}
.device__chip--mac { left: 4%; }
.device__chip--ext { right: 6%; }
.device__chip-label {
  color: var(--ink-3);
  letter-spacing: 0.06em;
  text-transform: lowercase;
}
.device__chip-value {
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  font-size: 12.5px;
  min-width: 32px;
  text-align: right;
}

/* ---- MacBook ---- */
.mac {
  position: relative;
  width: 100%;
  max-width: 380px;
  margin-left: auto;
  margin-right: 20px;
}
.mac__lid {
  position: relative;
  background: linear-gradient(180deg, #23262d 0%, #181a1f 100%);
  padding: 7px 7px 5px;
  border-radius: 12px 12px 3px 3px;
  border: 1px solid #2e3138;
  border-bottom: none;
  box-shadow: 0 22px 50px rgba(0, 0, 0, 0.6);
}
.mac__bezel {
  position: relative;
  background: #08080a;
  border-radius: 7px;
  overflow: hidden;
  aspect-ratio: 16 / 10;
}
.mac__notch {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 28%;
  height: 9%;
  background: #000;
  border-radius: 0 0 7px 7px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 26%;
  z-index: 4;
}
.mac__camera {
  width: 4px;
  height: 4px;
  background: #1a1a1e;
  border-radius: 50%;
  box-shadow: inset 0 0 1.5px rgba(255,255,255,0.15);
}
.mac__sensor {
  width: 4px;
  height: 4px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 6px var(--accent);
  opacity: calc(0.35 + var(--brightness) * 0.65);
  animation: sensor-pulse 2.8s ease-in-out infinite;
}
@keyframes sensor-pulse {
  0%, 100% { transform: scale(0.85); }
  50%      { transform: scale(1.15); }
}
.mac__screen { position: absolute; inset: 0; }
.mac__base {
  position: relative;
  margin: 0 -7px;
  height: 14px;
  background: linear-gradient(180deg, #2c2f36 0%, #1a1c21 55%, #0f1115 100%);
  border-radius: 0 0 18px 18px;
  border: 1px solid #2e3138;
  border-top: none;
}
.mac__hinge {
  position: absolute;
  top: 0;
  left: 50%;
  width: 30%;
  height: 3px;
  background: linear-gradient(180deg, #050608 0%, #1a1d22 100%);
  transform: translateX(-50%);
  border-radius: 0 0 4px 4px;
}

/* ---- External monitor ---- */
.ext {
  position: relative;
  width: 100%;
  max-width: 620px;
}
.ext__bezel {
  position: relative;
  background: linear-gradient(180deg, #1c1e25 0%, #0f1115 100%);
  padding: 13px 13px 16px;
  border-radius: 14px;
  border: 1px solid #2e3138;
  box-shadow: 0 32px 70px rgba(0, 0, 0, 0.65);
}
.ext__screen {
  position: relative;
  background: #06060a;
  border-radius: 3px;
  overflow: hidden;
  aspect-ratio: 16 / 10;
}
.ext__led {
  position: absolute;
  right: 24px;
  bottom: 5px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #6cd47f;
  box-shadow: 0 0 6px rgba(108, 212, 127, 0.8);
  opacity: calc(0.45 + var(--brightness) * 0.55);
}
.ext__stand {
  width: 26%;
  height: 44px;
  margin: -1px auto 0;
  background: linear-gradient(180deg, #2c2f36 0%, #1a1c21 100%);
  clip-path: polygon(32% 0, 68% 0, 92% 100%, 8% 100%);
}
.ext__foot {
  width: 48%;
  height: 7px;
  margin: 0 auto;
  background: linear-gradient(180deg, #2c2f36, #181a1f);
  border-radius: 4px;
  box-shadow: 0 6px 18px rgba(0,0,0,0.4);
}

/* ---- wallpaper inside screens ---- */
.wallpaper {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(100% 70% at 22% 18%, #5a3185 0%, transparent 55%),
    radial-gradient(120% 90% at 78% 82%, #2d6d8f 0%, transparent 60%),
    radial-gradient(70% 70% at 60% 38%, #e7a955 0%, transparent 45%),
    linear-gradient(180deg, #1a1530 0%, #0a1024 100%);
}
.menubar {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 7%;
  background: linear-gradient(180deg, rgba(0,0,0,0.4), rgba(0,0,0,0.1));
  border-bottom: 1px solid rgba(255,255,255,0.04);
  z-index: 1;
}
.dimmer {
  position: absolute;
  inset: 0;
  background: #000;
  pointer-events: none;
  z-index: 2;
  opacity: calc(1 - var(--brightness) * 0.92);
  will-change: opacity;
}

.stage__caption {
  grid-column: 1 / -1;
  text-align: center;
  margin-top: 70px;
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.36em;
  text-transform: uppercase;
  color: var(--ink-3);
}

/* ---- content sections ---- */
section.how,
section.anti,
section.quickstart {
  padding: 100px 0;
  border-top: 1px solid var(--line);
}
section h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(30px, 4vw, 46px);
  letter-spacing: -0.018em;
  margin: 0 0 50px;
  line-height: 1.1;
  max-width: 720px;
}

/* how it works */
.how__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  counter-reset: step;
}
.how__list li {
  padding: 0;
  position: relative;
}
.how__step {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  color: var(--accent);
}
.how__list h3 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 23px;
  margin: 14px 0 10px;
  letter-spacing: -0.012em;
  line-height: 1.2;
}
.how__list p {
  margin: 0;
  color: var(--ink-2);
  font-size: 14.5px;
  line-height: 1.6;
}

code:not(pre code) {
  font-family: var(--mono);
  font-size: 0.9em;
  color: var(--accent-soft);
  background: rgba(248, 217, 124, 0.07);
  padding: 1px 6px;
  border-radius: 4px;
}

/* anti-features */
.anti__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: 60px;
  row-gap: 4px;
  max-width: 960px;
}
.anti__list li {
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink-2);
  font-size: 15.5px;
  line-height: 1.6;
}
.anti__list strong {
  color: var(--ink);
  font-weight: 500;
}

/* quickstart */
.quickstart pre {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 26px 28px;
  overflow-x: auto;
  margin: 0;
  font-family: var(--mono);
  font-size: 13.5px;
  line-height: 1.75;
}
.quickstart pre code {
  background: transparent;
  padding: 0;
  color: var(--ink);
  font-size: inherit;
}
.c-comment { color: var(--ink-3); }
.quickstart__note {
  margin-top: 22px;
  font-size: 13.5px;
  color: var(--ink-3);
  max-width: 680px;
  line-height: 1.55;
}

/* footer */
footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding: 36px 44px 50px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-3);
  margin-top: 40px;
}
footer a {
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--line);
}
footer a:hover { text-decoration-color: var(--accent); }

/* ---- responsive ---- */
@media (max-width: 900px) {
  .topbar { padding: 22px 24px; }
  main { padding: 0 24px; }
  footer { padding: 32px 24px; }

  .hero { padding: 50px 0 20px; }

  .stage {
    grid-template-columns: 1fr;
    row-gap: 70px;
    padding: 110px 24px 60px;
    min-height: 760px;
  }
  .stage__horizon { display: none; }
  .cable { display: none; }
  .celestial { width: 52px; height: 52px; }

  .mac { max-width: 280px; margin: 0 auto; }
  .ext { max-width: 100%; margin: 0 auto; }
  .device__chip--mac { left: 50%; transform: translateX(-50%); }
  .device__chip--ext { right: auto; left: 50%; transform: translateX(-50%); }

  section.how, section.anti, section.quickstart { padding: 70px 0; }
  .how__list { grid-template-columns: 1fr; }
  .anti__list { grid-template-columns: 1fr; column-gap: 0; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 42px; }
  .install { font-size: 12.5px; padding: 11px 12px 11px 14px; }
}

/* ---- reduced motion ---- */
@media (prefers-reduced-motion: reduce) {
  .mac__sensor { animation: none; }
}