@font-face {
  font-family: "Adwaita Sans";
  src: url("fonts/adwaita-sans.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}

:root {
  --paper: #000;
  --ink: #f2f2f2;
  --ink-2: rgb(242 242 242 / 0.62);
  --ink-3: rgb(242 242 242 / 0.42);
  --wash: rgb(242 242 242 / 0.05);
  --wash-2: rgb(242 242 242 / 0.11);
  --mono: ui-monospace, "Adwaita Mono", "JetBrains Mono", Consolas, monospace;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.5 "Adwaita Sans", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  margin: 0;
}

::-webkit-scrollbar {
  width: 14px;
  height: 14px;
}

::-webkit-scrollbar-track,
::-webkit-scrollbar-corner {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  border: 5px solid transparent;
  border-radius: 999px;
  background: rgb(242 242 242 / 0.22) padding-box;
}

::-webkit-scrollbar-thumb:hover {
  border-width: 4px;
  background-color: rgb(242 242 242 / 0.4);
}

::-webkit-scrollbar-thumb:active {
  background-color: rgb(242 242 242 / 0.55);
}

::-webkit-scrollbar-button {
  display: none;
}

@media (hover: hover) and (pointer: fine) {
  html {
    height: 100%;
    overflow: hidden;
  }

  body {
    height: 100%;
    overflow-y: auto;
  }
}

@supports (-moz-appearance: none) {
  body {
    scrollbar-width: thin;
    scrollbar-color: rgb(242 242 242 / 0.25) transparent;
  }
}

a {
  color: inherit;
}

img {
  display: block;
  max-width: 100%;
}

.bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background: #000 url("img/sky.webp") center / cover no-repeat;
}

header {
  position: sticky;
  top: 0;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 14px 20px;
}

header .logo img {
  height: 30px;
  width: auto;
}

nav {
  display: flex;
  gap: 4px;
}

nav a {
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 650;
  text-decoration: none;
  color: var(--ink-2);
  transition: background 150ms ease-out, color 150ms ease-out;
}

nav a:hover {
  background: var(--wash);
  color: var(--ink);
}

nav a[aria-current="page"] {
  background: var(--wash-2);
  color: var(--ink);
}

header .src {
  justify-self: end;
  font-size: 15px;
  font-weight: 650;
  color: var(--ink-2);
  text-decoration: none;
}

header .src:hover {
  color: var(--ink);
}

.top {
  min-height: min(calc(78svh - 58px), 760px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 24px 56px;
  text-align: center;
}

.top h1 {
  margin: 0;
}

.top h1 img {
  width: min(420px, 72vw);
  height: auto;
}

.top .sub {
  margin: 22px 0 0;
  font-size: 17px;
  color: var(--ink-2);
}

.btns {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-top: 28px;
}

.top .ver {
  margin: 18px 0 0;
  font-size: 13px;
  color: var(--ink-3);
  font-feature-settings: "tnum";
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 26px;
  border: 0;
  border-radius: 999px;
  font: inherit;
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: background 150ms ease-out, transform 150ms ease-out;
}

.btn.solid {
  background: var(--ink);
  color: #000;
}

.btn.solid:hover {
  background: #fff;
}

.btn.alt {
  background: var(--wash-2);
  color: var(--ink);
}

.btn.alt:hover {
  background: rgb(242 242 242 / 0.17);
}

.btn:active {
  transform: scale(0.98);
}

.btn .size {
  font-weight: 500;
  opacity: 0.6;
  font-feature-settings: "tnum";
}

.shot {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 24px;
}

.shot img {
  width: 100%;
  height: auto;
  border-radius: 14px;
  background: #111;
  box-shadow: 0 0 0 1px rgb(242 242 242 / 0.08);
}

.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 72px 24px;
}

.wrap h2 {
  margin: 0 0 18px;
  font-size: 13px;
  font-weight: 650;
  color: var(--ink-3);
}

.features {
  margin: 0;
}

.features div {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 16px;
  padding: 13px 14px;
  margin: 0 -14px;
  border-radius: 10px;
  transition: background 120ms ease-out;
}

.features div:hover {
  background: var(--wash);
}

.features dt {
  font-weight: 700;
}

.features dd {
  margin: 0;
  color: var(--ink-2);
}

footer {
  max-width: 760px;
  margin: 0 auto;
  padding: 28px 24px 48px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  font-size: 14px;
  color: var(--ink-3);
}

footer a {
  text-decoration: none;
}

footer a:hover {
  color: var(--ink);
}

footer .credit {
  margin-right: auto;
}

.head {
  padding: 56px 0 8px;
}

.head h1 {
  margin: 0;
  font-size: clamp(44px, 7vw, 64px);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1;
}

.head p {
  margin: 12px 0 0;
  color: var(--ink-2);
  font-feature-settings: "tnum";
}

.os-list {
  display: flex;
  flex-direction: column;
}

.os {
  padding: 34px 0;
}

.os + .os {
  border-top: 1px solid rgb(242 242 242 / 0.07);
}

.os h2 {
  margin: 0;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.os .req {
  margin: 4px 0 18px;
  color: var(--ink-2);
}

.os .hint {
  margin: 14px 0 0;
  font-size: 14px;
  color: var(--ink-3);
}

.os .step {
  margin: 16px 0 8px;
  font-size: 14px;
  color: var(--ink-2);
}

.cmd {
  position: relative;
  margin: 0;
  padding: 14px 92px 14px 16px;
  border-radius: 12px;
  background: rgb(242 242 242 / 0.06);
  font: 14px/1.6 var(--mono);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.cmd button {
  position: absolute;
  top: 9px;
  right: 9px;
  padding: 5px 13px;
  border: 0;
  border-radius: 999px;
  background: var(--wash-2);
  color: var(--ink);
  font: 600 13px "Adwaita Sans", system-ui, sans-serif;
  cursor: pointer;
  transition: background 150ms ease-out;
}

.cmd button:hover {
  background: rgb(242 242 242 / 0.18);
}

.cmd button.done {
  background: var(--ink);
  color: #000;
}

.in {
  animation: in 520ms cubic-bezier(0.2, 0.7, 0.2, 1) both;
}

@keyframes in {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
}

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

  * {
    transition: none !important;
  }
}

@media (max-width: 720px) {
  header {
    grid-template-columns: auto 1fr;
    padding: 12px 16px;
  }

  header .src {
    display: none;
  }

  nav {
    justify-self: end;
  }

  nav a {
    padding: 6px 12px;
  }

  .top {
    min-height: 62svh;
    padding: 32px 16px 48px;
  }

  .shot {
    padding: 0 16px;
  }

  .wrap {
    padding: 56px 16px;
  }

  .features div {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  footer {
    padding: 24px 16px 40px;
  }
}