:root {
  --bg: #05070c;
  --text: #eef2f8;
  --muted: #95a0b5;
  --faint: #677188;
  --blue: #095ded;
  --cyan: #0ae7fb;
  --line: rgba(255, 255, 255, 0.1);
  --ease-out: cubic-bezier(0.16, 0.84, 0.2, 1);
  --font: "Segoe UI Variable Display", "Segoe UI Variable Text", "Segoe UI", system-ui,
    -apple-system, "Helvetica Neue", Arial, sans-serif;
}

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

html {
  color-scheme: dark;
  background: var(--bg);
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  color: var(--text);
  /* No background here: html has it, and one on body would paint over the
     backdrop layer below. */
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

/* ---- Background: glow, dot grid and grain behind everything ------------- */

.backdrop {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(55% 40% at 50% 0%, rgba(9, 93, 237, 0.16), transparent 70%),
    radial-gradient(30% 30% at 85% 20%, rgba(10, 231, 251, 0.07), transparent 70%),
    radial-gradient(35% 35% at 12% 35%, rgba(9, 93, 237, 0.08), transparent 70%),
    var(--bg);
}

.backdrop::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.075) 1px, transparent 1.6px);
  background-size: 28px 28px;
  -webkit-mask-image: radial-gradient(60% 55% at 50% 30%, #000 20%, transparent 75%);
  mask-image: radial-gradient(60% 55% at 50% 30%, #000 20%, transparent 75%);
}

.backdrop::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.06;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---- Hero ---------------------------------------------------------------- */

.hero {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: clamp(40px, 10vh, 112px) 20px 0;
}

.hero > * {
  animation: up 0.9s var(--ease-out) both;
}
.hero > :nth-child(2) { animation-delay: 0.06s; }
.hero > :nth-child(3) { animation-delay: 0.12s; }
.hero > :nth-child(4) { animation-delay: 0.18s; }
.hero > :nth-child(5) { animation-delay: 0.24s; }

@keyframes up {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 16px 7px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.16em;
}

.brand svg {
  display: block;
  height: 19px;
  width: auto;
}

h1 {
  margin: 26px 0 0;
  font-size: clamp(2.6rem, 1.1rem + 5.2vw, 5.4rem);
  line-height: 1.02;
  font-weight: 700;
  letter-spacing: -0.035em;
  text-wrap: balance;
}

h1 em {
  font-style: normal;
  padding-right: 0.04em;
  background: linear-gradient(100deg, var(--cyan) 5%, #3b8cff 55%, var(--blue) 95%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lede {
  margin: 22px 0 0;
  max-width: 35rem;
  font-size: clamp(1.02rem, 0.92rem + 0.4vw, 1.2rem);
  line-height: 1.6;
  color: var(--muted);
  text-wrap: balance;
}

.nowrap {
  white-space: nowrap;
}

kbd {
  display: inline-block;
  font: inherit;
  font-size: 0.82em;
  font-weight: 600;
  line-height: 1.3;
  color: var(--text);
  padding: 0.05em 0.45em 0.1em;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-bottom-width: 2px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.06);
}

/* ---- Buttons ------------------------------------------------------------- */

.actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-top: 36px;
}

.btn {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 240px;
  padding: 13px 24px 13px 18px;
  border-radius: 14px;
  text-align: left;
  text-decoration: none;
  color: var(--text);
  transition: transform 0.25s var(--ease-out), box-shadow 0.25s, background-color 0.25s;
}

.btn svg {
  flex: none;
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.btn svg.filled {
  fill: currentColor;
  stroke: none;
}

.btn b {
  display: block;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.btn small {
  display: block;
  margin-top: 1px;
  font-size: 12.5px;
  color: rgba(238, 242, 248, 0.7);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.btn-primary {
  background: linear-gradient(180deg, #2b85ff, var(--blue));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.28),
    0 0 0 1px rgba(10, 231, 251, 0.35),
    0 14px 40px -12px rgba(9, 93, 237, 0.95);
}

.btn-primary small {
  color: rgba(255, 255, 255, 0.78);
}

.btn-primary:hover {
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.3),
    0 0 0 1px rgba(10, 231, 251, 0.6),
    0 20px 50px -12px rgba(9, 93, 237, 1);
}

/* A light sweep across the Download button on hover. */
.btn-primary::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(110deg, transparent 30%, rgba(255, 255, 255, 0.3) 50%, transparent 70%);
  transform: translateX(-120%);
}

.btn-primary:hover::after {
  transform: translateX(120%);
  transition: transform 0.8s var(--ease-out);
}

.btn-ghost {
  background-color: rgba(255, 255, 255, 0.045);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.13);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.btn-ghost:hover {
  background-color: rgba(255, 255, 255, 0.085);
}

.fine {
  margin: 20px 0 0;
  font-size: 13px;
  color: var(--faint);
}

.fine i,
.foot i {
  font-style: normal;
  margin: 0 0.45em;
  opacity: 0.6;
}

/* ---- The app window in 3D -------------------------------------------------
   A slab with a real front, back and four edges, so it reads as an object
   rather than a picture. main.js sets --rx/--ry (tilt), --gx/--gy (where the
   glare sits) and --refl (how much reflection shows). */

/* Clipped, because a tilted slab reaches past its own box, and the browser
   would otherwise make the page scrollable that far -- a distance that
   changes with every tilt, so the scrollbar would change with the mouse.
   The padding keeps the glow and the reflection clear of the clip. */
.stage {
  --w: min(1120px, 92vw);
  --h: calc(var(--w) * 947 / 1472);
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: center;
  overflow: clip;
  margin-top: calc(clamp(28px, 7vh, 72px) - 80px);
  padding-top: 80px;
  padding-bottom: calc(var(--h) * 0.4 + 60px);
}

.scene {
  --d: 14px;
  --r: 10px;
  position: relative;
  perspective: 1700px;
  perspective-origin: 50% 10%;
  animation: rise 1.5s var(--ease-out) 0.2s both;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(90px);
  }
}

.glow {
  position: absolute;
  left: 50%;
  top: 42%;
  width: calc(var(--w) * 1.15);
  height: 85%;
  transform: translate(-50%, -50%);
  background: radial-gradient(closest-side, rgba(9, 93, 237, 0.55), rgba(10, 231, 251, 0.1) 60%, transparent);
  filter: blur(50px);
  pointer-events: none;
}

.slab {
  position: relative;
  width: var(--w);
  height: var(--h);
  transform-style: preserve-3d;
  transform: rotateX(var(--rx, 22deg)) rotateY(var(--ry, 0deg));
  will-change: transform;
}

.face,
.side {
  position: absolute;
  backface-visibility: hidden;
}

.front {
  inset: 0;
  overflow: hidden;
  border-radius: var(--r);
  background: #0b0d12;
  transform: translateZ(calc(var(--d) / 2));
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.09);
}

.front img {
  display: block;
  width: 100%;
  height: 100%;
}

.glare {
  position: absolute;
  inset: 0;
  pointer-events: none;
  mix-blend-mode: screen;
  background:
    radial-gradient(65% 55% at var(--gx, 50%) var(--gy, 10%), rgba(255, 255, 255, 0.13), transparent 65%),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.05), transparent 35%);
}

.back {
  inset: 0;
  border-radius: var(--r);
  background: #0a0c11;
  transform: rotateY(180deg) translateZ(calc(var(--d) / 2));
}

/* Edges are inset by the corner radius so no square corner pokes out
   past the rounded front. */
.side {
  left: 50%;
  top: 50%;
}

.top,
.bottom {
  width: calc(var(--w) - 2 * var(--r));
  height: var(--d);
  margin: calc(var(--d) / -2) 0 0 calc((var(--w) - 2 * var(--r)) / -2);
}

.top {
  background: linear-gradient(90deg, #1f2430, #3a4252 50%, #1f2430);
  transform: rotateX(90deg) translateZ(calc(var(--h) / 2));
}

.bottom {
  background: linear-gradient(90deg, #0b0e14, #1a2030 50%, #0b0e14);
  transform: rotateX(-90deg) translateZ(calc(var(--h) / 2));
}

.left,
.right {
  width: var(--d);
  height: calc(var(--h) - 2 * var(--r));
  margin: calc((var(--h) - 2 * var(--r)) / -2) 0 0 calc(var(--d) / -2);
  background: linear-gradient(180deg, #2a303d, #11141b);
}

.left {
  transform: rotateY(-90deg) translateZ(calc(var(--w) / 2));
}

.right {
  transform: rotateY(90deg) translateZ(calc(var(--w) / 2));
}

/* A mirrored copy of the window's lower part, under it. Mirroring flips the
   face, so it must not hide its back like the other faces do. */
.reflection {
  position: absolute;
  left: 0;
  top: calc(100% + 18px);
  width: 100%;
  height: 40%;
  overflow: hidden;
  border-radius: var(--r);
  opacity: calc(var(--refl, 0) * 0.5);
  transform: translateZ(calc(var(--d) / 2)) scaleY(-1);
  filter: blur(3px);
  -webkit-mask-image: linear-gradient(to top, rgba(0, 0, 0, 0.55), transparent 95%);
  mask-image: linear-gradient(to top, rgba(0, 0, 0, 0.55), transparent 95%);
  pointer-events: none;
}

.reflection img {
  position: absolute;
  left: 0;
  bottom: 0;
  display: block;
  width: 100%;
  height: var(--h);
}

/* ---- Footer -------------------------------------------------------------- */

.foot {
  position: relative;
  z-index: 2;
  padding: 0 20px 36px;
  text-align: center;
  font-size: 13px;
  color: var(--faint);
}

.foot a {
  text-decoration: none;
  color: var(--muted);
}

.foot a:hover {
  color: var(--text);
}

/* ---- Small screens ------------------------------------------------------- */

@media (max-width: 640px) {
  .actions {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    max-width: 340px;
  }

  .btn {
    min-width: 0;
  }

  .scene {
    --d: 8px;
    --r: 6px;
    perspective: 900px;
  }

  .fine i {
    margin: 0 0.3em;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero > *,
  .scene {
    animation: none;
  }

  .btn,
  .btn-primary:hover::after {
    transition: none;
  }
}