:root {
  --blue: #1258e8;
  --blue-hover: #0f4ccb;
  --bg: #ffffff;
  --bg-soft: #f5f6f8;
  --fg: #0b0d12;
  --muted: #5d6472;
  --border: rgba(11, 13, 18, 0.09);
  --card: #ffffff;
  --kbd-bg: #ffffff;
  --kbd-border: rgba(11, 13, 18, 0.14);
  --panel: rgba(246, 247, 250, 0.82);
  --panel-border: rgba(11, 13, 18, 0.08);
  --sel: rgba(11, 13, 18, 0.07);
  --win: #ffffff;
  --win-bar: #eceef2;
  --line: #dfe3ea;
  --radius: 14px;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0d12;
    --bg-soft: #12151c;
    --fg: #f3f5f9;
    --muted: #9aa2b1;
    --border: rgba(255, 255, 255, 0.08);
    --card: #12151c;
    --kbd-bg: #1b1f28;
    --kbd-border: rgba(255, 255, 255, 0.14);
    --panel: rgba(30, 33, 41, 0.78);
    --panel-border: rgba(255, 255, 255, 0.09);
    --sel: rgba(255, 255, 255, 0.09);
    --win: #232731;
    --win-bar: #2c313c;
    --line: #3a404c;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Inter", "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }

h1, h2, .lede, .privacy p, .note { text-wrap: balance; }
p { text-wrap: pretty; }

h1, h2, h3 {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Inter", "Segoe UI", Roboto, sans-serif;
  letter-spacing: -0.025em;
  margin: 0;
}

kbd {
  display: inline-grid;
  place-items: center;
  min-width: 1.7em;
  height: 1.7em;
  padding: 0 0.4em;
  margin: 0 0.1em;
  font: 600 0.82em/1 -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--fg);
  background: var(--kbd-bg);
  border: 1px solid var(--kbd-border);
  border-bottom-width: 2px;
  border-radius: 6px;
  vertical-align: 0.08em;
}

/* Nav */

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1080px;
  margin: 0 auto;
  padding: 18px 24px;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  backdrop-filter: saturate(180%) blur(16px);
}

.brand { display: flex; align-items: center; gap: 10px; font-weight: 650; font-size: 17px; }
.brand img { border-radius: 7px; }

.nav nav { display: flex; gap: 26px; font-size: 14.5px; color: var(--muted); }
.nav nav a:hover { color: var(--fg); }

/* Hero */

main { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

.hero { text-align: center; padding: 72px 0 40px; }

.hero-icon {
  width: 112px;
  height: 112px;
  filter: drop-shadow(0 18px 30px rgba(18, 88, 232, 0.28));
  margin-bottom: 28px;
}

.hero h1 { font-size: clamp(42px, 7vw, 76px); line-height: 1.02; font-weight: 750; }

.lede {
  max-width: 560px;
  margin: 24px auto 0;
  font-size: clamp(17px, 2vw, 19px);
  color: var(--muted);
}

.cta { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-top: 36px; }

.button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 46px;
  padding: 0 22px;
  font-weight: 600;
  font-size: 15.5px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--card);
  transition: background 0.15s, transform 0.15s, box-shadow 0.15s;
}

.button:hover { background: var(--bg-soft); }
.button:active { transform: scale(0.98); }
.button:focus-visible, .nav a:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; }

.button.primary {
  color: #fff;
  background: var(--blue);
  border-color: transparent;
  box-shadow: 0 8px 24px -8px rgba(18, 88, 232, 0.6);
}

.button.primary:hover { background: var(--blue-hover); }

.meta { margin-top: 18px; font-size: 13.5px; color: var(--muted); }

/* Demo */

.demo { padding: 32px 0 24px; }

.desktop {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 380px;
  padding: 56px 24px 88px;
  border-radius: 24px;
  overflow: hidden;
  background:
    radial-gradient(120% 90% at 15% 10%, #6aa7ff 0%, transparent 55%),
    radial-gradient(90% 90% at 90% 90%, #22a7f0 0%, transparent 55%),
    linear-gradient(135deg, #1258e8, #2877ed 55%, #408cf5);
}

.panel {
  display: flex;
  gap: 10px;
  padding: 14px;
  border-radius: 20px;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  -webkit-backdrop-filter: blur(30px) saturate(160%);
  backdrop-filter: blur(30px) saturate(160%);
  box-shadow: 0 30px 70px -20px rgba(5, 20, 60, 0.55);
}

.tile {
  width: 158px;
  padding: 8px 8px 10px;
  border-radius: 12px;
  border: 2px solid transparent;
  animation: select 6s infinite;
}

.tile span {
  display: block;
  margin-top: 8px;
  font-size: 11.5px;
  font-weight: 500;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--fg);
}

/* The selection steps one tile every 1.2s, in time with the ⇥ key below.
   The first tile is selected when animations don't run. */
.t1 { background: var(--sel); border-color: var(--blue); }
.t2 { animation-delay: -4.8s; }
.t3 { animation-delay: -3.6s; }
.t4 { animation-delay: -2.4s; }
.t5 { animation-delay: -1.2s; }

@keyframes select {
  0%, 19.9% { background: var(--sel); border-color: var(--blue); }
  20%, 100% { background: transparent; border-color: transparent; }
}

@keyframes select4 {
  0%, 24.9% { background: var(--sel); border-color: var(--blue); }
  25%, 100% { background: transparent; border-color: transparent; }
}

@keyframes select3 {
  0%, 33.2% { background: var(--sel); border-color: var(--blue); }
  33.3%, 100% { background: transparent; border-color: transparent; }
}

/* Mini windows: <i> = traffic lights, <b> = content lines */

.win {
  position: relative;
  aspect-ratio: 16 / 11;
  padding: 18px 10px 8px;
  border-radius: 7px;
  background: var(--win);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.12), 0 0 0 0.5px rgba(0, 0, 0, 0.08);
  overflow: hidden;
}

.win::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 12px;
  background: var(--win-bar);
}

.win i {
  position: absolute;
  top: 4px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #ff5f57;
}

.win i:nth-child(1) { left: 6px; }
.win i:nth-child(2) { left: 12px; background: #febc2e; }
.win i:nth-child(3) { left: 18px; background: #28c840; }

.win b { display: block; height: 5px; margin-top: 6px; border-radius: 3px; background: var(--line); }
.win b:nth-of-type(1) { width: 70%; background: var(--accent); }
.win b:nth-of-type(2) { width: 90%; }
.win b:nth-of-type(3) { width: 55%; }
.win b:nth-of-type(4) { width: 80%; }

.w-mail  { --accent: #1e88ff; }
.w-code  { --accent: #a35cff; }
.w-web   { --accent: #0fb5ae; }
.w-chat  { --accent: #e5487b; }
.w-notes { --accent: #f5b301; }

.w-web b:nth-of-type(2) { height: 32px; width: 100%; border-radius: 4px; }
.w-code { background: #1d1f27; }
.w-code::before { background: #2a2d37; }
.w-code b { background: #3a3e4c; }

.keys {
  position: absolute;
  bottom: 28px;
  left: 50%;
  translate: -50% 0;
  display: flex;
  gap: 8px;
}

.keys kbd {
  min-width: 44px;
  height: 44px;
  font-size: 18px;
  color: #fff;
  background: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-bottom-width: 3px;
  border-radius: 10px;
}

.keys .hold { translate: 0 1px; border-bottom-width: 2px; background: rgba(255, 255, 255, 0.24); }
.keys .tap { animation: tap 1.2s infinite; }

@keyframes tap {
  0%, 12% { translate: 0 1px; border-bottom-width: 2px; background: rgba(255, 255, 255, 0.3); }
  20%, 100% { translate: 0 0; border-bottom-width: 3px; background: rgba(255, 255, 255, 0.16); }
}

/* Sections */

section h2 { font-size: clamp(30px, 4vw, 42px); font-weight: 700; text-align: center; }

.features { padding: 96px 0 24px; }

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 48px;
}

.grid article {
  padding: 26px;
  border-radius: var(--radius);
  background: var(--bg-soft);
  border: 1px solid var(--border);
}

.grid h3 { font-size: 17px; font-weight: 650; letter-spacing: -0.01em; }
.grid p { margin: 8px 0 0; color: var(--muted); font-size: 15px; }

.keys-section { padding: 96px 0 24px; }

.shortcuts {
  max-width: 620px;
  margin: 40px auto 0;
  border-top: 1px solid var(--border);
}

.shortcuts div {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 16px;
  align-items: center;
  padding: 14px 4px;
  border-bottom: 1px solid var(--border);
}

.shortcuts dt { white-space: nowrap; }
.shortcuts dd { margin: 0; color: var(--muted); font-size: 15px; }

.note { text-align: center; color: var(--muted); font-size: 14.5px; margin-top: 22px; }

.privacy { padding: 96px 0 112px; text-align: center; }
.privacy p { max-width: 560px; margin: 20px auto 32px; color: var(--muted); font-size: 17px; }

/* Footer */

.footer {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  width: calc(100% - 48px);
  max-width: 1032px;
  margin: 0 auto;
  padding: 28px 0 40px;
  border-top: 1px solid var(--border);
  font-size: 13.5px;
  color: var(--muted);
}

.footer nav { display: flex; gap: 20px; }
.footer a:hover { color: var(--fg); }

/* Responsive */

@media (max-width: 900px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
  .tile { width: 128px; animation: select4 4.8s infinite; }
  .t2 { animation-delay: -3.6s; }
  .t3 { animation-delay: -2.4s; }
  .t4 { animation-delay: -1.2s; }
  .t5 { display: none; }
}

@media (max-width: 640px) {
  .nav nav a:not(:last-child) { display: none; }
  .hero { padding-top: 40px; }
  .hero-icon { width: 88px; height: 88px; }
  .grid { grid-template-columns: 1fr; }
  .desktop { min-height: 300px; padding: 40px 12px 84px; }
  .panel { gap: 4px; padding: 8px; border-radius: 16px; }
  .tile { width: 96px; padding: 5px 5px 7px; animation: select3 3.6s infinite; }
  .t2 { animation-delay: -2.4s; }
  .t3 { animation-delay: -1.2s; }
  .tile span { font-size: 10px; }
  .t4 { display: none; }
  .shortcuts div { grid-template-columns: 1fr; gap: 6px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .tile, .keys .tap { animation: none; }
}

.combo { white-space: nowrap; }